材料科学
电极
导电原子力显微镜
电化学
快离子导体
电解质
纳米尺度
纳米技术
分析化学(期刊)
导电体
原子力显微镜
离子
集电器
固态
光电子学
化学
复合材料
物理化学
有机化学
色谱法
作者
Yasushi Maeda,Mitsunori Kitta,Kentaro Kuratani
标识
DOI:10.35848/1347-4065/ac665e
摘要
Abstract The high ionic/electronic resistance at the solid/solid interfaces of all-solid-state Li-ion batteries (LIBs) is a critical challenge that limits their practical application. High-resolution analytical methods are required to investigate the local electrochemical properties of the interfaces. In this study, we applied conductive atomic force microscopy (c-AFM) to all-solid-state LIBs consisting of LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM) as the active material and a sulfide-based solid electrolyte (SE). The NCM positive electrode was observed by applying a bias voltage between the c-AFM tip and the negative electrode. In this operation mode, denoted as the “nano current collector” (NCC) mode, the AFM tip functioned as a nanoscale current collector. The oxidation currents at the NCM/SE interface and grain boundaries inside the NCM particles were successfully detected in this mode at a spatial resolution of >100 nm. c-AFM performed in the NCC mode enhanced the spatial resolution for the analysis of electrochemical phenomena in all-solid-state LIBs.
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