Patent · US Active

Reduced oxides having large thermoelectric ZT values

US8628680B2 · kind B2 · utility

2Cited by

1References

12Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Monika Backhaus-Ricoult · Horseheads, US
Charlene Marie Smith · Corning, US
Todd Parrish St Clair · Riverside, US

Key dates

Filing date	Jul 28, 2011
Grant date	Jan 14, 2014
Priority date	—
Expiry date	Mar 12, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/9669
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Doped and partially-reduced oxide (e.g., SrTiO3-based) thermoelectric materials. The thermoelectric materials can be single-doped or multi-doped (e.g., co-doped) and display a thermoelectric figure of merit (ZT) of 0.2 or higher at 1050K. Methods of forming the thermoelectric materials involve combining and reacting suitable raw materials and heating them in a graphite environment to at least partially reduce the resulting oxide. Optionally, a reducing agent such as titanium carbide can be incorporated into the starting materials prior to the reducing step in graphite. The reaction product can be sintered to form a dense thermoelectric material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.