锂镧锆氧（LLZO）基固态锂电池界面关键问题研究进展

翟朋博, 常冬梅, 毕志杰, 赵宁, 郭向欣

Research progress on key interfacial issues in lithium lanthanum zirconium oxide-based solid-state

Pengbo ZHAI, Dongmei CHANG, Zhijie BI, Ning ZHAO, Xiangxin GUO

图10 (a) 锂金属在Li/LLZO界面处沉积的电化学机械模型[78]；(b) 锂金属沉积过电势和裂纹扩展应力与固体电解质表面缺陷尺寸的关系图；(c) 原位X射线断层扫描技术(X-CT)对固体电解质中锂金属沉积行为直接成像[79]；(d) 使用多层复合固体电解质实现合理的力学性能调控，以解决界面应力应变问题[80]

Fig. 10 (a) Electrochemical mechanical model of lithium metal deposition at the Li/LLZO interface[78]; (b) The relationship between the overpotential/crack growth stress of lithium metal deposition and the size of defects in solid electrolyte; (c) Direct imaging of lithium metal deposition behavior in solid electrolyte by In-situ X-ray tomography (X-CT)[79]; (d) Utilizing multilayer composite solid electrolyte to achieve rational mechanical properties control and solve the problems of interfacial stress/strain[80]