Shanghai, April 20 (Xinhua) Chinese researchers have identified a key failure mechanism in solid-state lithium batteries, potentially revolutionizing electric vehicle technology.
The study, conducted by researchers from Tongji University and Huazhong University of Science and Technology, links battery failures to cycle fatigue in the lithium metal anode. This fatigue adheres to mechanical principles, similar to how repeated bending weakens a paperclip.
Published in Science, the discovery provides a framework for predicting battery life cycles and designing longer-lasting energy storage systems. Solid-state batteries offer higher energy density (up to 500 Wh/kg) compared to traditional lithium-ion batteries (200-300 Wh/kg), along with improved safety due to solid electrolytes.
Chinese battery giants CATL and BYD aim for small-scale solid-state battery production by 2027, with large-scale application predicted around 2030. Collaboration between research institutions and companies like BYD is accelerating commercialization.