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Home Science News Technology and Engineering

Restoring Order: Researchers Revitalize Aging Batteries

April 16, 2025
in Technology and Engineering
Reading Time: 3 mins read
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The negative and positive thermal expansion behavior of battery cathode materials upon heating
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A groundbreaking advancement in battery technology has emerged from a collaboration of scientists led by Professor Liu Zhaoping at the Ningbo Institute of Materials Technology and Engineering (NIMTE) affiliated with the Chinese Academy of Sciences. In partnership with researchers from the University of Chicago and several other institutions, this team’s innovative work focuses on the development of zero thermal expansion (ZTE) materials. The implications of these materials could revolutionize the field of lithium-ion batteries (LIBs), a cornerstone of modern energy storage systems, particularly in electric vehicles and portable electronic devices.

Recent studies highlighted in the prestigious journal Nature have revealed that these ZTE materials yield nearly 100% voltage recovery in aging lithium-ion batteries. This achievement presents a transformative opportunity to enhance the longevity and performance of batteries, which are currently challenged by issues of stability and efficiency. Specifically, lithium-rich layered oxide cathode materials, which have the potential to deliver capacities exceeding 300 mAh/g, suffer from operational instability that leads to voltage decay and battery aging.

At the core of this research lies the observation of a phenomenon known as negative thermal expansion (NTE) behavior in lithium-rich layered oxide cathode materials. Unlike conventional materials that expand when heated, these particular cathodes contract in the temperature range of 150–250°C. This unique property enables the manipulation of thermal expansion effects that typically result in structural disarray—an issue that has hindered battery performance for years.

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As researchers explored the thermodynamic principles governing this NTE behavior, they identified a correlation between oxygen-redox (OR) activity and thermal expansion coefficients. By treating structural disorder as a tunable parameter rather than viewing it solely as a defect, the researchers laid the groundwork for dynamically adjusting the thermal expansion properties of materials. This pioneering approach allows for the controlled toggling of thermal expansion coefficients among positive, zero, and negative states.

The implications of these findings are profound. According to Qiu Bao, a lead author on the study, the ability to tune OR activity not only stabilizes the cathode materials but also optimizes their performance under varying operational conditions. This capability is particularly advantageous for applications in electric vehicles, where stability and reliability are paramount.

The researchers implemented a robust predictive framework that successfully facilitated the world’s first synthesis of ZTE cathodes through meticulous OR tuning. By mitigating the adverse effects of thermal expansion, these materials enhance structural integrity and durability, which in turn prolongs battery lifespan.

When subjected to 4.0 V voltage pulses, the lattice structure of the ZTE materials underwent reconstruction, leading to an extraordinary finding: nearly 100% voltage recovery was achieved. This breakthrough suggests the feasibility of utilizing smart charging systems that could facilitate the transition of battery materials from disordered to ordered states while in operation. Such a development not only has the potential to double the lifespan of lithium-ion batteries but also to significantly improve their overall performance.

A pivotal aspect of this research is the broader context in which it exists. The increasing demand for electric vehicles and renewable energy storage solutions necessitates innovations in battery technologies that can reliably support these advancements. The capacity of ZTE materials to rejuvenate aging batteries presents a substantial step forward, not only in maintaining the performance of current electric vehicles but also in providing cost-effective solutions for extending their service life.

As the researchers at NIMTE and their collaborators continue to explore the vast potential of ZTE materials, the project shines light on the future of battery technology. The development of self-healing mechanisms in high-performance devices can lead to enhancements in energy storage systems, further propelling the transition toward sustainable energy solutions. By promoting the longevity and reliability of lithium-ion batteries, this research contributes significantly to the ongoing evolution of various industries relying on advanced energy storage technologies.

In conclusion, the innovative work on zero thermal expansion materials stands at the frontier of battery technology, with transformative implications for the electric vehicle market, consumer electronics, and large-scale energy storage solutions. As we move forward, the integration of these materials into commercially viable battery systems could reshape how we operate within an increasingly electrified world, paving the way for a sustainable energy future.


Subject of Research: Zero Thermal Expansion Materials
Article Title: Breakthrough in Battery Technology: Zero Thermal Expansion Materials Pave the Way for Enhanced Lithium-Ion Batteries
News Publication Date: October 2023
Web References: Nature Journal
References: Nature (2023)
Image Credits: Image by NIMTE

Keywords: Battery technology, Lithium-ion batteries, Zero thermal expansion, Electric vehicles, Thermal expansion coefficients, Oxygen-redox chemistry

Tags: battery technology advancementscollaborative research in materials scienceimplications for energy storage systemslithium-ion battery innovationslithium-rich layered oxide cathodeslongevity of electric vehicle batteriesnegative thermal expansion behaviorportable electronic device batteriesstability and efficiency in batteriestransformative battery performance improvementsvoltage recovery in aging batterieszero thermal expansion materials
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