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US 8,962,193 B2Granted
Electrochemical cell with solid electrolyte having alumina edge portion
AssigneeSamsung SDI Co., Ltd.
InventorsHyun-Ki Park, Dong-Hee Han, Jeong-Doo Yi, Ju-Yong Kim
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Abstract
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.
Claims10
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.
3 more elements
An electrochemical cell comprising:
- a housing;
- a first electrode chamber inside the housing;
- a second electrode chamber inside the housing;
- a solid electrolyte between the first electrode chamber and the second electrode chamber, the solid electrolyte having:
- a main portion comprising β-alumina or β″-alumina;
- and
- 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 electrically isolating the first electrode chamber from the second electrode chamber,
- 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
- wherein the edge portion is between the main portion and the insulator, and is joined to the insulator via an adhesive substance.
8 more elements
Dependencies are inferred from the claim text.