Electrochemical cell with solid electrolyte having alumina edge portion

摘要

A solid electrolyte is disclosed. The solid electrolyte includes a main portion that includes β-alumina or β″-alumina, and an edge portion integrally provided with the main portion. The edge portion has a mixed portion that includes α-alumina and includes β alumina or β″-alumina. A concentration gradient of the α-alumina in the edge portion decreases in a first direction from the edge portion to the main portion.

主权项

1. An insulated solid electrolyte comprising:
a main portion comprising β-alumina or β″-alumina; an edge portion comprising α-alumina and integrally provided with the main portion, the edge portion having a mixed portion comprising α-alumina and comprising β-alumina or β″-alumina, the edge portion having no distinct boundary between α-alumina and β alumina or β″-alumina; and an insulator surrounding the mixed portion and configured to electrically isolate different electrode chambers on different sides of the main portion, wherein a concentration gradient of the α-alumina in the edge portion decreases in a first direction from the edge portion to the main portion, and the insulator is joined to the edge portion via an adhesive substance.