锂枝晶的力学性能：高强度与脆性断裂

Strong and brittle lithium dendrites Qing Ai1†, Boyu Zhang1†, Xing Liu2,3†, Bongki Shin1, Wenhua Guo4, Guanhui Gao1, Lihong Zhao5, Xintong Weng1, Qiyi Fang1, Tianshu Zhai1, Doug Steinbach1, Yifan Zhu1, Yifeng Liu1, Fan Wang1, Xiaoyin Tian1, Hua Guo1*, Youtian Zhang1, Xuan Zhao6,7, Yimo Han1, Ming Tang1, Yan Yao5*, Ting Zhu2*, Huajian Gao8,9*‡, Jun Lou1,10* The growth and penetration of lithium dendrites through electrolytes and separators remain key challenges to realizing high–energy density lithium-metal batteries. Using mechanically strong electrolytes and separators has been considered a promising strategy based on the commonly believed softness of lithium. However, dendrite formation persists in stiff solid electrolytes, suggesting distinct mechanical behaviors. We measured the mechanical properties of individual lithium dendrites using an air-free protocol. …