Proton conducting electrolyte and electrochemical cell including proton conducting electrolyte

摘要

A proton conducting electrolyte having good proton conductivity and an electrochemical cell that includes the proton conducting electrolyte are provided. The proton conducting electrolyte has the ABO₃ type perovskite structure, and a Site-B contains a first metal having a valence that is smaller than the average valence of the Site-B, and a second metal element having a valence that is larger than the average valence of the Site-B by at least one. Holes are formed in the proton conducting electrolyte. Thus, good proton conductivity is imparted to the proton conducting electrolyte.