[26p-E105-1~12] 6.6 Probe Microscopy

[26p-E105-7] Local Electrochemical Measurement of All-solid-state Batteries using c-AFM

〇Yasushi Maeda¹, Mitsunori Kitta¹, Kentaro Kuratani¹ (1.AIST)

Keywords:AFM, all-solid-state, Li-ion battery

We applied c-AFM to all-solid-state batteries to observe local electrochemical reaction. Battery samples were prepared using Li(Ni_1/3Co_1/3Mn_1/3)O₂ (NCM) as the cathode active material and Li₂S-P₂S₅ (LPS) as the solid electrolyte, and the cathode was observed by c-AFM. The result showed that local charging current was observed at NCM/LPS interfaces and also grain boundaries inside NCM particles.