SOLID ELECTROLYTE, METHOD FOR PRODUCING THE SAME, AND SECONDARY BATTERY COMPRISING SOLID ELECTROLYTE

摘要

A solid electrolyte comprising: LiBH4; and an alkali metal compound represented by the following formula (1): MX  (1) (in the formula (1), M represents an alkali metal atom, and X represents one selected from the group consisting of halogen atoms, NR2 groups (each R represents a hydrogen atom or an alkyl group) and N2R groups (R represents a hydrogen atom or an alkyl group)).