Mesoscopic Li distribution analysis on an all solid battery

Saito, Tsohiya*; Yamazaki, Akiyoshi*; Kamiya, Tomihiro; Fujita, Kazuhisa*; Mima, Kunioki*; Kato, Yoshiaki* ; Iba, Hideki*

All solid batteries (ASB) is one of the most promising candidates for post-Li-ion battery especially for large scale applications such as electric vehicle, plug-in hybrid vehicle and stationary use. On the other hand, one of the major drawbacks of ASB is the poor power density due to its large "interfacial resistance" of electrodes. The origin of interfacial resistance is cracks and/or resistive layer between active material and solid electrolyte. To figure out a quantitative view of the poor power density, the micro-PIXE/PIGE system was utilized to obtain 2D elemental images of transition metals and Li in samples of ASB with a spatial resolution of m level at the ion accelerator facility, TIARA. The result will be shown in the conference and the possibility of in-situ observation will be discussed.