材料科学
纳米压痕
电解质
复合材料
锂(药物)
快离子导体
延展性(地球科学)
断裂韧性
开裂
蠕动
韧性
电极
医学
内分泌学
物理化学
化学
作者
Sergiy Kalnaus,Andrew S. Westover,Mordechai Kornbluth,Erik G. Herbert,Nancy J. Dudney
标识
DOI:10.1557/s43578-020-00098-x
摘要
We report on the mechanical behavior of a solid Li-ion conductor, lithium phosphorous oxynitride (Lipon), for solid-state batteries. In particular, the purpose of this investigation was to quantify the resistance to cracking (fracture toughness) of this material by nanoindentation. We observed surprising ductility and the ability to recover in Lipon. We were unsuccessful in inducing cracks in Lipon and observed accommodation of stress via pile-up and densification rather than by cracking at various strain rates. Simulations demonstrate that both deformation and densification depend on the alkali content. Densification appears to be recoverable at room temperature. We discuss the findings in comparison with nanoindentation-induced cracking in other inorganic solid electrolyte materials and provide possible explanations for high resistance of Lipon to Li filament propagation.
科研通智能强力驱动
Strongly Powered by AbleSci AI