Secondary battery electrode active material, solid electrolyte composition, all-solid secondary battery electrode sheet and all-solid secondary battery, and secondary battery electrode active material, all-solid secondary battery electrode sheet and all-solid-state secondary battery Secondary battery manufacturing method

摘要

An electrode active material for a secondary battery containing a first active material and a second active material, wherein the first active material expands during charging, contracts during discharging, and the second active material is It contracts during charging and expands during discharge, so that a part of the particles constituting the first active material and a part of the particles constituting the second active material are in contact with each other, and the interface where these particles are in contact with each other is solidified. A secondary battery electrode active material forming a crystal part, a solid electrolyte composition using the same, an all-solid secondary battery electrode sheet and an all-solid secondary battery, and a secondary battery electrode active material, A method for producing an electrode sheet for a solid secondary battery and an all-solid secondary battery.