Solid electrolyte sheet and method for producing same
AssigneeNippon Electric Glass Co., Ltd.
InventorsJunichi IKEJIRI, Hideo YAMAUCHI, Yoshinori YAMAZAKI
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Abstract
Provided is a beta-alumina-based solid electrolyte sheet capable of increasing the first charge and discharge capacities and rapid charge and discharge characteristics of an all-solid-state sodium secondary battery. A solid electrolyte sheet contains β-alumina and/or β″-alumina and satisfies C1>C2 where C1 represents a concentration of Na2O in a surface of the solid electrolyte sheet and C2 represents a concentration of Na2O in a middle of a thickness direction of the solid electrolyte sheet.
Claims8
A solid electrolyte sheet containing β-alumina and/or β″-alumina, the solid electrolyte sheet satisfying C1>C2 where C1 represents a concentration of Na2O in a surface of the solid electrolyte sheet and C2 represents a concentration of Na2O in a middle of a thickness direction of the solid electrolyte sheet.
Dependencies are inferred from the claim text.