Patent ID: 9590261
Date: 2017-03-07
CPC Classifications: C01G,C01P,C04B,H01B,H01M,Y02E,Y02P

Claim:
1. A solid electrolyte obtained by subjecting a composite oxide of a Ruddlesden-Popper-type structure represented by the formula (1) or (2) to a treatment of at least one of hydroxylation and hydration, wherein said solid electrolyte has a property that a mass determined by thermogravimetric (TG) measurement at 400° C. is less than a mass determined by TG measurement at 250° C. by not less than 4.0%: wherein A stands for La and Sr; B stands for Fe alone or Fe and at least one of Co, Mn, Cu, Ti, Pd, Ni, Nb, and Ta; and n denotes an integer of 1 to 3.