Led by Professor Byoung Hun Lee, researchers from POSTECH’s Departments of Electrical Engineering and Semiconductor Engineering, alongside Dr. Jae Hyeon Jun, have unveiled a novel semiconductor device architecture that simultaneously executes multiple circuit functions within a single structure. This advancement not only streamlines the complexity inherent in traditional circuit designs but also dramatically multiplies data processing speeds, achieving a fourfold increase compared to conventional transistor arrays. The full scope of their findings can be found in the esteemed journal Advanced Functional Materials.

Traditionally, embedding increased functionality within semiconductor chips has demanded a proportional increase in the number of discrete transistors, inevitably inflating chip size and power consumption. Moreover, when retrofitting functionalities on existing silicon-based chips, back-end-of-line (BEOL) processing limitations impose stringent temperature ceilings, generally below 400°C, to avoid deteriorating prior circuitry. These constraints have historically curtailed the integration density and versatility of semiconductor devices.

The POSTECH research team circumvented these thermal limitations by exploiting the advantageous material properties of zinc oxide (ZnO) and tellurium (Te). Both materials are conducive to fabrication as ultra-thin, uniform films at sub-200°C temperatures, thereby aligning perfectly with BEOL processing requisites. By intricately interfacing ZnO and Te, they engineered a heterojunction transistor — a sophisticated junction between two distinct semiconductor materials — that gives rise to unique electronic behaviors unlike those observed in monolithic semiconductors.

Central to their innovation is the harnessing of negative differential transconductance (NDT). Unlike standard semiconductor devices where electrical current predictably escalates with applied voltage, NDT devices exhibit regions where current conspicuously diminishes as voltage continues to increase. More remarkably, the POSTECH team achieved double negative differential transconductance (D-NDT) within a solitary device, manifesting two consecutive regimes of current reduction. This duality enables a single transistor to mimic the functionalities ordinarily partitioned across multiple devices.

Controlling the geometric overlap—the nanoscale region where ZnO and Te films interface—proved pivotal. When this overlap is minimal, the device shows a single instances of NDT. Extending the overlap length induces the simultaneous formation of lateral and vertical currents within the device structure, culminating in the appearance of double current peaks. This architectural nuance renders the device functionally analogous to a multidimensional traffic intersection in an electrical circuit, empowering intricate routing of signals within a compact footprint.

Operationalizing this device, the team demonstrated a frequency quadrupler capable of transforming a single input signal into four distinct output signals. Conventional circuit architectures would necessitate an ensemble of transistors to perform such a task; however, this new ZnO–Te heterojunction device accomplishes it alone. The implication here is profound: a 75% reduction in transistor count, which translates directly to diminished power consumption, lowered fabrication costs, and higher reliability due to fewer component failures.

Experimental circuits employing this technology validated a quadrupling of data processing speed relative to traditional single-transistor approaches within a single input signal cycle. This acceleration is attributable to the minimized circuit complexity and the distinctive D-NDT characteristics intrinsic to the ZnO–Te heterojunction transistor. The synthesis of these factors ushers in potentials for ultra-compact, high-performance computational units suitable for next-generation wearable AI devices and beyond.

Professor Lee succinctly summarized the implications: this research not only corroborates the feasibility of condensing multifaceted circuit functionalities into individual devices but also forecasts the integration of such technology into three-dimensional, high-density semiconductor systems. Such advancements are poised to catalyze new frontiers in artificial intelligence hardware, enabling smarter, faster, and more efficient AI-driven wearables and embedded systems.

Moreover, the inherent low-temperature fabrication compatibility of ZnO and Te thin films opens doors for post-fabrication functional enhancements on existing semiconductor chips, a domain historically fraught with challenges. This capability is crucial for evolving hardware ecosystems where adaptability and incremental upgrades are paramount, potentially revitalizing current silicon platforms with state-of-the-art functions without wholesale replacements.

Funding for this pioneering research stemmed from the National Semiconductor Research Laboratory’s Core Technology Development Program and the Nano-materials Technology Development Program, both underpinned by support from South Korea’s Ministry of Science and ICT and the National Research Foundation of Korea. Such institutional backing underscores the strategic prioritization of semiconductor innovation within national technology agendas.

In essence, the ZnO–Te heterojunction transistor exemplifies a transformative stride toward compact, multifunctional semiconductor devices. As wearable technology and AI applications increasingly demand smarter, smaller, and faster computational units, such innovations beckon a future wherein the integration density no longer compromises device performance. The fusion of material science ingenuity and circuit design acumen embodied in this research could herald a new epoch in the electronics industry, characterized by devices that are not only more capable but also vastly more efficient and adaptable.

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Subject of Research: Multi-functional ZnO–Te heterojunction semiconductor devices enabling compact and efficient circuit functionalities.

Article Title: Multi-Functional ZnO–Te Heterojunction Devices Enabling Compact Frequency Quadrupler

News Publication Date: 26-May-2026

Web References: 10.1002/adfm.74948

Image Credits: POSTECH

Keywords

Applied sciences and engineering, zinc oxide, tellurium, heterojunction transistors, negative differential transconductance, multi-functional semiconductor devices, frequency quadrupler, low-temperature fabrication, artificial intelligence hardware, microelectronics, integrated circuits, semiconductor device innovation

At the heart of this research lies the recognition that DNA, long revered as the blueprint of biological life, possesses untapped potential as an information medium that transcends traditional nucleotide sequencing. Unlike classical DNA data storage approaches that encode information in the sequence of genetic letters—adenine, thymine, cytosine, and guanine—this new technique leverages the three-dimensional structural configurations of synthetically engineered DNA assemblies. Dr. Hao Yan, a Regents Professor deeply embedded in molecular sciences at ASU, articulates a paradigm shift: viewing DNA not merely as a carrier of genetic code but as a versatile, nanoscale information platform amenable to precise engineering for storing and safeguarding data.

Confronted with the explosive growth of “big data,” current storage technologies are reaching physical and economic limits. The team’s initial study details the fabrication of nanoscopic DNA architectures, each designed to embody discrete physical “letters” with distinct shapes. These nanoscale constructs traverse a sophisticated microsensor, eliciting unique electrical signatures captured by high-resolution sensing apparatus. Integrating machine learning algorithms allows real-time decoding of these signals into coherent digital information with remarkable fidelity and speed. This avoids the bottlenecks and costs associated with established sequencing protocols, offering a revolutionary alternative for rapid, scalable DNA data retrieval.

One of the most compelling attributes of DNA as a storage medium is its unparalleled volumetric density and extraordinary chemical stability. Historical precedents, including the recovery of 2-million-year-old DNA fragments from Greenland sediment, underscore its potential for long-term preservation, far exceeding the lifespan of conventional storage devices. By programming artificial DNA nanosheets and scaffolds that can be electrically “read” without destructive sampling, scientists envision compact archives that require minimal physical space and energy while enduring the rigors of time and environmental fluctuation.

Parallel to data storage innovations, the second study delves into cryptographic applications of DNA origami—an artful technique that folds single-stranded DNA into intricate two and three-dimensional shapes. Instead of linear encoding, data is embedded in spatial molecular patterns that manifest as complex topographies at the nanoscale. This architectural encoding creates a molecular cipher that defies facile interpretation when stripped of the precise decoding algorithms and spatial references. By utilizing super-resolution microscopy, the researchers capture exquisitely detailed images of individual DNA nano-objects, enabling machine vision protocols to classify and decrypt embedded messages.

This molecular cryptography heralds a new frontier in information security by vastly amplifying the combinatorial complexity of possible encryption keys. The transition from one-dimensional sequence data to three-dimensional spatial codes exponentially expands the keyspace, making brute-force attacks computationally prohibitive. Moreover, these nanoscale molecular codes retain integrity under conditions unfriendly to traditional electronics—extreme temperatures, ionizing radiation, and decades-long archival storage—thus offering robust protective layers for sensitive digital assets.

The interdisciplinary synergy driving this research integrates DNA nanotech, advanced optical imaging, microelectronic sensing, and artificial intelligence, establishing a multifaceted toolkit for interrogating and manipulating biomolecular information systems. Chao Wang, an associate professor in electrical and computer engineering, emphasizes the convergence of semiconductor technology and biology, noting that this integrated approach lays the groundwork for programmable nanodevices and biosensors with unprecedented adaptability and precision.

Together, these two studies embody a visionary fusion of molecular biology and information technology. By reconceiving DNA strands and origami as both storage media and cryptographic substrates, the researchers open avenues for highly compact, resilient, and secure digital infrastructure suited to emerging challenges. Such platforms could underpin everything from large-scale scientific data repositories to encrypted medical records and cultural heritage archives, all safeguarded within nanoscale molecular vaults.

Importantly, the ability to electronically “read” DNA-based data without the need for extensive biochemical processing accelerates retrieval times and diminishes costs. The rapid, contactless detection platform also mitigates wear on the physical medium, augmenting durability. This innovation positions biomolecular storage as a practical contender in real-world applications where silicon technologies face scaling and stability limitations.

Beyond data handling, the molecular codes created through DNA origami encryption offer intriguing possibilities for secure communications in fields demanding high confidentiality. These include defense, cloud computing, and environments hostile to conventional electronics. The built-in molecular complexity effectively cloaks the information unless the authorized decoding framework is applied, providing an embedded hardware-enforced security layer.

Reflecting on these discoveries, the research team underscores the transformative potential unlocked by melding insights from synthetic biology with cutting-edge engineering disciplines. As the digital universe expands, such hybrid molecular-electronic systems could evolve into keystone technologies for managing information in the nanotechnology era, heralding a new epoch of data management that leverages the fundamental structures of life itself.

This work not only redefines the boundaries of what constitutes data and encryption but also inspires a profound reassessment of nature’s molecules as pliable substrates for next-generation digital technologies. The prospect of ultra-dense, durable, and encrypted DNA-based information systems heralds a future where biology and microelectronics converge seamlessly at the nanoscale, promising to reshape the technological landscape with elegance and efficiency that only molecular precision can achieve.

Subject of Research: Not applicable
Article Title: High-speed 3D DNA PAINT and unsupervised clustering for unlocking 3D DNA origami cryptography
News Publication Date: 13-Dec-2025
Web References: http://dx.doi.org/10.1038/s41467-025-66338-y
References: Advanced Functional Materials; Nature Communications
Image Credits: Jason Drees for the Biodesign Institute at ASU

Keywords

Physics, Molecular physics, Physical chemistry, Biotechnology, Bioelectronics, Electronic devices, Microelectronics, Molecular electronics, Digital data, Information infrastructure, Nanotechnology

The findings, released in the prestigious journal Advanced Functional Materials, reveal that carbon nanofibers can be employed to dramatically enhance the adhesion properties of carbon fiber-reinforced composites. This advancement is particularly significant, as it addresses a longstanding challenge within the industry: the weak interface bond between carbon fibers and the polymer matrix. By focusing on the inherent properties of carbon nanofibers, researchers have developed a hybrid approach that merges both chemical and mechanical bonding to achieve remarkable gains in tensile strength and toughness.

The lead researcher on the project, Sumit Gupta, highlighted the innovative nature of their technique, stating that it provided a dual solution—simultaneously optimizing the interface that typically limits the effectiveness of these materials. Gupta’s research team found that by integrating carbon nanofibers into the composite matrix, they created a system where the bonds formed not only adhered better but also created a physically stronger product, yielding a 50% improvement in tensile strength and nearly doubling the toughness of the composite material.

The fundamental understanding of carbon fiber composites is similar to that of reinforced concrete; however, the challenge lies in improving the effectiveness of the adhesive between the two materials, which has often hindered advancements. Traditional methods attempted to remedy this by modifying the fiber surfaces or adding adhesion promoters with mixed results. The ORNL approach represents a novel method that actively combines nanotechnology with polymer science in a manner that is poised to revolutionize composite manufacturing processes.

Essential to this technique is a method known as electrospinning. This process enables the precise creation of extremely fine fibers from polyacrylonitrile, a common precursor for carbon fibers. These fibers, measuring about 200 nanometers in diameter, are then strategically placed within the composite structure, forming a robust network of connections between the carbon fibers and the surrounding polymer. The resulting structure creates what researchers refer to as "bridges" between the materials, enhancing the interdisciplinary performance attributes critical for various applications.

The ORNL researchers have leveraged advanced facilities, such as the Center for Nanophase Materials Sciences, to analyze these interactions and refine the methods used for developing this novel technique. Through advanced imaging and scattering techniques, they were able to gain insights at the nanoscopic level, elucidating how these fibers interact with the matrix and enabling them to fine-tune their electrospinning parameters for optimal results.

Further illustrating the innovative nature of their research, the team has tapped into one of the flagship supercomputers located at the Oak Ridge Leadership Computing Facility, providing them the computational power needed to model and simulate the interactions within these composite systems. This capability has facilitated a deeper understanding of how nanoscale fibers can improve adhesion and contribute to an overall enhancement in material properties, thus broadening the potential applications for composite materials.

Moving forward, the research team is actively pursuing industrial partnerships to commercialize their techniques, aiming to transform the carbon fiber landscape by making it more cost-effective and accessible. With the cost of carbon fiber being a critical barrier to widespread adoption, the hope is that by improving the bonding mechanisms, manufacturers can reduce the quantity required while still maintaining superior material performance. Furthermore, the innovation allows for the use of shorter, discontinuous fibers, which are typically seen as waste, thus promoting sustainability in composite materials production.

Initial inquiries into potential applications have revealed a wealth of opportunities outside traditional sectors. The team sees possibilities for reinforcing civil infrastructure or developing advanced composites for defense and security applications. This comprehensive vision underscores the versatility of the new techniques developed at ORNL and their potential impact on a variety of fields.

As they refine the electrospinning process, the research team at ORNL continues to explore even more possibilities, including integrating this technique with prior research focused on creating smart, self-sensing composites that can monitor their structural health using advanced materials. This hybrid of nanotechnology and materials engineering embodies the future of composite materials, positioning ORNL at the forefront of innovative materials science.

In essence, this research is not just about creating stronger materials; it represents a significant step towards realizing the full potential of carbon fiber composites in modern engineering and industrial applications. The ongoing collaboration between scientists and engineers will solidify the importance of such advancements in overcoming challenges in design and manufacturing processes across multiple sectors.

Furthermore, the impact of this research stretches beyond academic curiosity, contributing to the larger narrative of sustainable and efficient material usage in the face of growing energy demands and environmental challenges. As the ORNL team pushes the boundaries of knowledge and application, their findings will likely inspire future innovations in composite technologies that promise to reshape our built environment.

In conclusion, the work conducted by the Oak Ridge National Laboratory represents a vital leap forward in composite materials technology, with implications that could extend beyond current industrial practices, ushering in an era characterized by advanced, efficient, and more sustainable composite solutions.

Subject of Research: Enhancing the Binding in Carbon Fiber Composites
Article Title: Designing Physicochemically-Ordered Interphases for High-Performance Composites
News Publication Date: 1-May-2025
Web References: energy.gov/science
References: Advanced Functional Materials
Image Credits: Credit: Carlos Jones/ORNL, U.S. Dept. of Energy

Keywords

Composite materials, Nanotechnology, Materials science

Sulfones are traditionally synthesized through the selective oxidation of sulfides, a reaction process burdened by significant energetic demands and complex catalyst requirements. Existing methods often involve elevated temperatures ranging from 80°C to 150°C, along with stoichiometric amounts of costly precious metals, thus limiting scalability and economic viability. Addressing these formidable challenges, Professor Keigo Kamata and his team at the newly established Institute of Science Tokyo have introduced a catalyst based on strontium manganese oxide, modified through precise substitution with ruthenium atoms to create controlled oxygen vacancies within the crystal lattice. Their findings, published in Advanced Functional Materials, underscore the catalyst’s ability to perform at just 30°C with near-perfect selectivity.

At the heart of this innovation lies oxygen defect engineering, a sophisticated strategy that intentionally introduces vacancies in the lattice oxygen sites to enhance catalytic activity. The catalyst, denoted as SrMn₁₋ₓRuₓO₃, modifies the conventional perovskite SrMnO₃ by substituting a small fraction of manganese ions with ruthenium. This subtle alteration generates oxygen vacancies which effectively facilitate oxygen atom transfer during the oxidative reaction. Such vacancies increase the mobility and reactivity of oxygen species on the catalyst surface, a crucial factor determining the oxidation kinetics and overall efficiency of sulfide conversion.

This meticulously engineered catalyst system operates via a Mars–van Krevelen mechanism, a surface reaction pathway where lattice oxygen directly participates in the oxidation of the sulfide substrate. During the reaction, oxygen atoms bound to the catalyst surface are transferred to the sulfide molecules, converting them into sulfones while leaving behind oxygen vacancies. These vacancies are rapidly replenished by molecular oxygen from the surrounding atmosphere, enabling a continuous catalytic cycle. This mechanism highlights the pivotal role of lattice oxygen mobility and vacancy dynamics in dictating catalytic performance, offering an elegant solution to achieve high turnover frequencies and selectivity at lower temperatures.

The performance metrics delivered by SrMn₁₋ₓRuₓO₃ are unprecedented. With only 1% ruthenium doping, the catalyst converts sulfides to sulfones with an exceptional selectivity of 99%, a remarkable feat considering the minimal use of precious metals involved. This efficiency is a stark improvement compared to traditional catalysts that typically require higher noble metal contents and less favorable reaction conditions. The reduced reliance on ruthenium not only cuts the cost but aligns the process with principles of green chemistry, mitigating environmental and economic impact.

Beyond mere catalytic efficiency, the stability and durability of the catalyst further enhance its industrial appeal. Rigorous reuse tests demonstrate that SrMn₁₋ₓRuₓO₃ can withstand at least five successive reaction cycles without any significant decline in performance. This resilience suggests a robust crystallographic architecture capable of maintaining oxygen vacancy concentrations and structural integrity under repetitive oxidative environments, an essential attribute for practical, large-scale chemical manufacturing.

The research also sheds light on the versatile applicability of the catalyst towards a broad spectrum of sulfide substrates, encompassing both aromatic and aliphatic compounds. This versatility is crucial for industries requiring adaptable and scalable synthetic routes, enabling the tailored manufacture of sulfone derivatives with minimal procedural adjustments. Such flexibility expands the catalyst’s utility from specialized pharmaceutical synthesis to broader chemical production platforms.

Importantly, this breakthrough underscores the broader potential of oxygen defect engineering in perovskite oxides beyond sulfide oxidation. The principles demonstrated here offer a template for designing next-generation catalysts targeting diverse aerobic oxidation reactions pivotal for environmental remediation, renewable energy conversion, and fine chemical synthesis. By integrating multiple synergistic elements within a crystalline matrix, the approach offers a tunable platform to balance activity, selectivity, and stability, paving the way for smarter, more sustainable catalyst design.

The implications of this work extend well beyond academic interest. The catalyst’s efficacy at low temperatures corresponds to considerable energy savings and reduced greenhouse gas emissions for industrial processes. Furthermore, eliminating the need for harsh solvents and excessive additives aligns with global sustainability goals, making it a compelling candidate for future commercial adoption in green chemical manufacturing.

Professor Kamata emphasizes the significance of the work: “Developing solid catalysts that can enable molecular oxygen-driven sulfide oxidation under mild conditions is a formidable challenge. Our oxygen defect engineering strategy provides a viable pathway to overcome this hurdle, marking a significant milestone towards sustainable industrial chemistry.” His team’s work exemplifies how fundamental materials science insights can translate into practical environmental and technological benefits.

Since the Institute of Science Tokyo was recently established through the merger of Tokyo Medical and Dental University and Tokyo Institute of Technology, this research stands as one of its early impactful scientific contributions. The interdisciplinary collaboration and cutting-edge synthesis techniques underscore the institute’s mission to advance science for societal value and sustainability.

In summary, the advancement of SrMn₁₋ₓRuₓO₃ perovskite catalysts through oxygen defect engineering heralds an exciting era for sulfone synthesis and beyond. Combining low energy demand, high selectivity, precious metal minimization, operational durability, and expansive substrate scope, this catalyst showcases the power of atomic-scale structural tuning in driving catalytic innovation. The broader application of such design principles promises transformative impacts on how industrial oxidation reactions are conducted, driving progress towards greener and smarter chemical processes worldwide.

Subject of Research: Not applicable

Article Title: Oxygen Defect Engineering of Hexagonal Perovskite Oxides to Boost Catalytic Performance for Aerobic Oxidation of Sulfides to Sulfones

News Publication Date: 3-Apr-2025

Web References: https://doi.org/10.1002/adfm.202425452

Image Credits: Professor Keigo Kamata from Institute of Science Tokyo, Japan

Keywords

Catalysis, Sulfone Synthesis, Oxygen Defect Engineering, Perovskite Oxides, Sulfide Oxidation, Ruthenium Doping, Mars–van Krevelen Mechanism, Sustainable Chemistry, Low-Temperature Catalysis, Green Chemistry, Catalyst Durability, Strontium Manganese Oxide

For decades, lithium has been the cornerstone of battery anode technology. Its small ionic radius and favorable electrochemical properties have made it ideal for intercalation into graphite anodes, the workhorse of lithium-ion batteries. Yet lithium’s rising cost, uneven geographic distribution, and environmental concerns associated with its extraction have spurred researchers to look toward more abundant alkali metals such as sodium and potassium. However, due to their larger ionic sizes and more complex interactions, these elements have historically struggled to intercalate efficiently into traditional graphite anodes, leading to poor battery performance and limited cycle life.

The team at Rice University circumvented these challenges by reimagining the morphology of carbon at the nanoscale. Instead of chemically doping graphite or creating hard carbons with amorphous structures, they synthesized pure graphitic carbon in carefully engineered shapes—tiny cones and discs—using a scalable pyrolysis technique applied to hydrocarbon byproducts from oil and gas operations. This morphological innovation introduces curvature and expanded interlayer spacing in the carbon lattice, enabling reversible insertion of the larger sodium and potassium ions without the need for artificial chemical modification.

This advance represents a significant departure from prior strategies in the field that emphasized altering chemical composition over physical structure. By focusing on shape as a design parameter, the researchers achieved a material that retains the intrinsic stability, conductivity, and strength of graphite, while overcoming its fundamental limitations with larger ions. The result is an anode material capable of delivering high capacity and impressive cycling stability in sodium-ion batteries, with promising though slightly lower performance for potassium-ion systems.

Specifically, electrochemical measurements revealed that the carbon cones and discs stably stored approximately 230 milliamp-hours per gram (mAh/g) of charge when cycling sodium ions. Remarkably, after 2,000 rapid charge-discharge cycles, this capacity remained at a robust 151 mAh/g, underscoring the material’s durability and structural integrity. Potassium-ion tests showed similarly encouraging behavior, albeit with somewhat reduced capacity, reflecting the even larger size and diffusion kinetics of potassium ions.

Advanced characterization methods such as cryogenic transmission electron microscopy (cryo-TEM) and solid-state nuclear magnetic resonance (NMR) further validated the integrity and functionality of the new anode material. Cryo-TEM imaging demonstrated clear ion intercalation pathways within the curved graphene layers, while NMR spectroscopy confirmed the reversible chemical environments of sodium ions residing in the graphitic structure without causing deleterious degradation. These observations provide compelling evidence for the material’s ability to maintain its architecture over prolonged cycling, a critical benchmark for practical battery applications.

This discovery upends the prevailing notion that pure graphite cannot accommodate sodium ions effectively, a long-standing “graphite barrier” that has limited the viability of sodium-ion batteries. By achieving stable ion intercalation in an undoped, graphitic carbon matrix, the study opens a new frontier in anode design that leverages morphological control rather than chemical complexity. Such an approach may enable simpler, cleaner, and more reproducible battery manufacturing processes.

In addition to performance advantages, the sustainability implications of this work are profound. The precursor hydrocarbons originate from byproducts in oil and gas extraction, effectively valorizing waste streams into high-value energy storage materials. This not only mitigates environmental impact by reducing waste but also decreases dependence on critical raw materials. Moreover, sodium and potassium are orders of magnitude more abundant and geographically dispersed than lithium, enhancing supply chain resilience and lowering material costs.

The research team envisions that this morphological paradigm shift will inspire new directions in electrochemical energy storage. Future battery technologies might prioritize nanoscale structural engineering of electrodes to optimize ion transport, mechanical stability, and electrochemical activity simultaneously. Such innovations could accelerate the adoption of sodium- and potassium-based batteries for grid-scale storage and electric mobility, where cost-effectiveness and material availability are paramount.

Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering at Rice and corresponding author on the study, emphasized the strategic significance of this advance. “We are not merely adding elements or heteroatoms to alter the chemistry of carbon,” Ajayan noted, “but fundamentally rethinking how the shape of carbon influences its electrochemical behavior. This focus on morphology unveils new possibilities previously inaccessible through conventional approaches.”

Atin Pramanik, the study’s first author and a postdoctoral associate in Ajayan’s lab, highlighted the versatility and robustness of the cone and disc anode materials. “Our results show that even in the absence of chemical dopants, these uniquely curved graphitic structures allow for reversible and stable intercalation of sodium ions with remarkably low structural stress,” Pramanik stated. “This could redefine standards for sustainable, high-performance anode materials.”

Support for this innovative project came from Omega Power and India’s Department of Science and Technology, reflecting international commitment to advancing next-generation energy storage solutions. As the global energy landscape evolves, breakthroughs like these promise to underpin technologies that are not only technologically superior but also economically and environmentally sustainable.

In sum, this pioneering study charts a course toward battery anodes that embrace shape over chemistry, utilizing novel carbon geometries synthesized from industrial byproducts to unlock the full potential of sodium and potassium-ion batteries. Such advances hold the promise of democratizing energy storage technology with safer, cheaper, and more abundant materials, fostering a greener and more resilient energy future.

Subject of Research: Development of pure graphitic carbon cone and disc anodes for sodium- and potassium-ion batteries as sustainable alternatives to lithium-ion battery anodes.

Article Title: Graphite Cone/Disc Anodes as Alternative to Hard Carbons for Na/K-Ion Batteries

News Publication Date: 8-Apr-2025

Web References:
https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202505848

Image Credits: Jeff Fitlow/Rice University

Keywords: Carbon, Industrial research, Chemical structure, Ions, Anodes, Potassium