リチウム金属負極全固体電池における砥粒吹付加工の固気二相流解析

抄録

It is known that shot peening (SP) of the electrolyte surface in contact with the negative electrode of a metal anode all-solid-state battery improves the battery performance. The degree of improvement depends on the abrasive grain size. However, the details of the flow fields in the solid and gas phases of the SP process and the mechanism of performance change with abrasive grain size have not been clarified. In this study, we conducted a solid-gas two-phase flow numerical simulation of the SP process to elucidate the characteristics of the flow field and to examine the effect of changes in abrasive grain size. As a result, it was clarified that the gas phase is a transonic flow with a shock wave, the solid phase does not follow the gas phase, and the force product given by the collision increases with the grain size.