In the relentless pursuit of enhanced electric vehicle (EV) performance, one of the foremost challenges remains the longevity and efficiency of lithium-ion batteries. Recently, researchers at the Indian Institute of Technology Gandhinagar (IITGN) unveiled a pioneering adaptive charging strategy poised to revolutionize how these batteries are charged, directly targeting the infamous phenomenon of lithium plating — a critical degradation mechanism in lithium-ion cells. This breakthrough, detailed in the upcoming issue of the Journal of Energy Storage, promises to balance rapid charging demands with the imperative of battery health, charting a path toward safer, longer-lasting EV batteries.
Lithium plating occurs when lithium ions fail to intercalate into the graphite anode during fast charging or low-temperature conditions. Instead, metallic lithium deposits accumulate unevenly on the anode surface, undermining the battery’s capacity and significantly raising safety risks. These metallic deposits not only diminish charge capacity irreversibly but potentially form dendritic structures that penetrate internal components, leading to short circuits and thermal runaway. Consequently, managing lithium plating is paramount for enhancing battery durability and user safety in EV applications.
Traditional charging protocols predominantly rely on fixed current schedules, designed without accommodating the nuanced realities of battery state and environmental variations. Such rigidity neglects the complex, dynamic changes in battery chemistry brought about by operating temperature, aging, and cycling history. Recognizing this, the IITGN team devised a smart charging algorithm that continuously adapts to a battery’s real-time condition, essentially “listening” to its internal responses to modulate charging intensity and prevent damage before it starts.
The adaptive strategy, termed Multi-Step Constant Current (MSCC) charging, optimizes the charging process across five distinct current stages finely tuned according to two pivotal parameters: State of Age (SOA) and Battery Ambient Temperature (BAT). Unlike conventional methods which assume a generic “new battery at room temperature,” MSCC dynamically adjusts thresholds at the onset of each charge cycle. This proactive calibration ensures the current steps respond precisely to shifting electrochemical conditions, thereby avoiding the onset voltage where lithium plating initiates.
Crucial to the efficacy of this approach is an innovative monitoring technique developed by the researchers to detect incipient lithium plating. By employing Rest-Interrupted Constant Current (RICC) testing, the charging current is momentarily paused at intervals to measure minute variations in internal impedance, which correlate strongly with the onset of metallic lithium deposition. This precise impedance sensing, combined with advanced statistical optimization through the Taguchi method, allowed the team to define optimal currents for each charging step tailored to mitigate plating under varied operational stressors.
The experimental validation leveraged Panasonic NCR18650B cells, a commercial nickel-cobalt-aluminium (NCA) lithium-ion chemistry widely used in EV applications due to its high energy density. Testing spanned a challenging temperature spectrum from -5°C to 25°C and encompassed fresh and aged battery states (up to 15% degradation). Results demonstrated that the adaptive MSCC strategy not only enhanced charge capacity utilization by over 10% but also achieved improvements in charging efficiency by approximately half a percent compared to existing plating-aware techniques. These seemingly modest efficiency gains underscore substantial improvements in battery longevity and risk mitigation.
By shifting protective mechanisms from hardware-intensive, often bulky and costly systems toward an intelligent, software-defined supervisory model, this innovation holds profound implications for the integration of adaptive algorithms within existing Battery Management Systems (BMS). This software-centric approach enables real-time, fine-grained control over charging currents without significant changes to physical hardware, offering manufacturers and users enhanced battery protection while maintaining user expectations for rapid charging.
The broader implications resonate strongly with ambitious policy initiatives targeting widespread EV adoption, particularly in India. National programs such as Faster Adoption and Manufacturing of Electric Vehicles (FAME) and the Advanced Chemistry Cell (ACC) Battery Storage initiative underscore a growing commitment to electrification. Success in these ventures hinges on robust battery technologies capable of thriving in diverse environmental climates and enduring long-term operational stresses — conditions under which adaptive charging strategies like MSCC are expected to excel.
Globally, the demand for nickel-rich lithium-ion batteries continues to surge, driven by the high energy density necessary for extended EV range. Yet, the same characteristics that make these cells ideal for energy storage simultaneously accentuate vulnerability to lithium plating during fast charging and temperature variations. IITGN’s adaptive framework thus aligns with worldwide efforts to enhance battery resilience, offering a scalable path to prolong battery lifespans and reduce the environmental footprint of EV batteries.
Moreover, advancing smart charging infrastructure that can adjust dynamically aligns well with evolving trends in battery warranty policies and consumer expectations. As manufacturers envisage extended warranties premised on battery health, intelligent charging solutions become indispensable for safeguarding asset value and user satisfaction. Such technology promises to reconcile the often conflicting imperatives of rapid recharge times and long-term battery reliability.
Fundamentally, the research exemplifies a paradigm shift in battery management — from static, one-size-fits-all charging to nuanced, data-driven strategies that respect the intricate, evolving electrochemical environment inside lithium-ion cells. Its success not only heralds improvements in EV battery safety and efficiency but also sets a benchmark for integrating adaptive control algorithms into next-generation energy storage solutions.
Looking ahead, future commercial adoption of the MSCC charging methodology could significantly reduce the reliance on bulky hardware safeties, lower the total cost of ownership for EV users, and even contribute to the sustainability of lithium-ion battery supply chains by curbing premature capacity loss. As rapid electrification accelerates worldwide, such pioneering research will be pivotal in ensuring the reliability and environmental viability of emerging battery technologies.
In conclusion, the IIT Gandhinagar team’s adaptive multi-step constant current charging strategy stands out as a seminal contribution to battery science and electric mobility. By intelligently mitigating lithium plating across varying temperatures and battery aging conditions, it paves the way for smarter, safer, and more durable EV batteries — reinforcing the critical role of algorithmic innovation in the future of sustainable transportation.
Subject of Research: Development of an optimized adaptive charging strategy to prevent lithium plating in lithium-ion batteries.
Article Title: Development of an optimized adaptive multi-step constant current charging strategy to prevent lithium plating in lithium-ion batteries.
News Publication Date: 27-Apr-2026.
Web References:
https://www.sciencedirect.com/science/article/pii/S2352152X26020049
http://dx.doi.org/10.1016/j.est.2026.122340
Image Credits: Please credit the Smart Power Electronics Laboratory, IIT Gandhinagar.
Keywords
Lithium-ion battery, lithium plating, adaptive charging, electric vehicles, battery degradation, battery management system, fast charging, battery impedance, state of age, battery ambient temperature, multi-step constant current, battery durability
