Electrolyte separator and method of making the electrolyte separator
First Claim
1. An electrolyte separator structure comprising:
- a graded integral structure, wherein the graded integral structure comprises a monolithic structure comprising an ion-conducting first ceramic at a first end and an electrically insulating second ceramic at a second end;
wherein the electrically insulating second ceramic comprises one or more of alpha-alumina, yttria, yttria stabilized zirconia, yttrium aluminum garnet, magnesia alumina spinel, and yttrium aluminate perovskite;
wherein the difference in the coefficient of thermal expansion of the ion-conducting first ceramic and the electrically insulating second ceramic is less than or equal to about 5 parts per million per degrees Centigrade; and
wherein at least one of the first ceramic or the second ceramic comprises a strengthening agent that comprises an oxide, a nitride, or a carbide of at least one element selected from the group consisting of group IIIA elements, group IIIB elements, group IVB elements, and group IVB elements.
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Abstract
An electrolyte separator structure is provided. The electrolyte separator structure comprises a graded integral structure, wherein the structure comprises an ion-conducting first ceramic at a first end and an electrically insulating second ceramic at a second end, wherein the difference in the coefficient of thermal expansion of the ion-conducting first ceramic and the electrically insulating second ceramic is less than or equal to about 5 parts per million per degrees Centigrade, and wherein at least one of the first ceramic or the second ceramic comprises a strengthening agent. Method of making the ion-separator structure is provided. Electrochemical cells comprising the ion-separator structure and method of making the electrochemical cell using the ion-separator structure are also provided.
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Citations
11 Claims
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1. An electrolyte separator structure comprising:
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a graded integral structure, wherein the graded integral structure comprises a monolithic structure comprising an ion-conducting first ceramic at a first end and an electrically insulating second ceramic at a second end;
wherein the electrically insulating second ceramic comprises one or more of alpha-alumina, yttria, yttria stabilized zirconia, yttrium aluminum garnet, magnesia alumina spinel, and yttrium aluminate perovskite;wherein the difference in the coefficient of thermal expansion of the ion-conducting first ceramic and the electrically insulating second ceramic is less than or equal to about 5 parts per million per degrees Centigrade; and wherein at least one of the first ceramic or the second ceramic comprises a strengthening agent that comprises an oxide, a nitride, or a carbide of at least one element selected from the group consisting of group IIIA elements, group IIIB elements, group IVB elements, and group IVB elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification