Moving particles inside batteries drive faster failure, finds study

A recent study from Northeastern University reveals that particles inside batteries move dynamically during operation, challenging the long-held belief that these materials remain mostly fixed while degrading slowly. Using real-time tracking, researchers observed that particles shift positions, collide, and reorganize as the battery charges and discharges. This constant motion generates mechanical stress, causing cracks and accelerating battery wear and failure. The findings explain why batteries often degrade faster than expected, especially under heavy use, and highlight the limitations of current models that assume a stable internal structure. The study emphasizes that particle movement induces internal strain, leading to fractures and reduced efficiency, which plays a crucial role in battery aging. This insight opens new avenues for battery design, suggesting that future materials and structures should limit particle motion or better absorb resulting stresses to enhance durability. Incorporating dynamic particle behavior into battery simulations could improve lifespan predictions and guide more accurate testing standards. The research has significant implications for electric vehicles and grid storage, where extending battery life and reducing replacement costs are critical. Published