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US 12,002,948 B2Granted
Immobilized selenium in a porous carbon with the presence of oxygen, a method of making, and uses of immobilized selenium in a rechargeable battery
AssigneesConsejo Superior De Investigaciones Cientificas (Csic), II-Vi Delaware, Inc.
InventorsWen-Qing Xu, Xiaoming Li, Shailesh Patkar, Elgin E. Eissler, Marta Sevilla Solis, Antonio Benito Fuertes Arias
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Abstract
In a method of preparing an immobilized selenium system or body, a selenium-carbon-oxygen mixture is formed. The mixture is then heated to a temperature above the melting temperature of selenium and the heated mixture is then cooled to ambient or room temperature, thereby forming the immobilized selenium system or body.
Claims19
A method of preparing an immobilized selenium body comprising:
- (a) forming a mixture comprising selenium and a self-templated porous carbon;
- (b) heating the mixture of step (a) to a temperature above the melting temperature of selenium;
- and
- (c) causing the heated mixture of step (b) to cool to ambient or room temperature, thereby forming the immobilized selenium body,
- wherein the self-templated porous carbon is made by a process that includes:
- carbonizing a salt by melting until oversaturation of anions in the melt forms a crystallized salt in the melt;
- increasing the viscosity of the melt until the melt coats surfaces of crystallites of the crystallized salt;
- and
- solidifying carbon in the melt on the surfaces of the crystallites.
6 more elements
Dependencies are inferred from the claim text.