Thermoelectric material including a multiple transition metal-doped type I clathrate crystal structure

Patent · Tue Jan 17 00:00:00 EST 2012

OSTI ID:1034909

Yang, Jihui ^[1]; Shi, Xun ^[2]; Bai, Shengqiang ^[3]; Zhang, Wenqing ^[3]; Chen, Lidong ^[3]; Yang, Jiong ^[3]

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1. Lakeshore, CA
2. Troy, MI
3. Shanghai, CN

A thermoelectric material includes a multiple transition metal-doped type I clathrate crystal structure having the formula A.sub.8TM.sub.y.sub.1.sup.1TM.sub.y.sub.2.sup.2 . . . TM.sub.y.sub.n.sup.nM.sub.zX.sub.46-y.sub.1.sub.-y.sub.2.sub.- . . . -y.sub.n.sub.-z. In the formula, A is selected from the group consisting of barium, strontium, and europium; X is selected from the group consisting of silicon, germanium, and tin; M is selected from the group consisting of aluminum, gallium, and indium; TM.sup.1, TM.sup.2, and TM.sup.n are independently selected from the group consisting of 3d, 4d, and 5d transition metals; and y.sub.1, y.sub.2, y.sub.n and Z are actual compositions of TM.sup.1, TM.sup.2, TM.sup.n, and M, respectively. The actual compositions are based upon nominal compositions derived from the following equation: z=8q.sub.A-|.DELTA.q.sub.1|y.sub.1-|.DELTA.q.sub.2|y.sub.2- . . . -|.DELTA.q.sub.n|y.sub.n, wherein q.sub.A is a charge state of A, and wherein .DELTA.q.sub.1, .DELTA.q.sub.2, .DELTA.q.sub.n are, respectively, the nominal charge state of the first, second, and n-th TM.

• Research Organization: GM Global Technology Operations LLC (Detroit, MI)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-04NT42278
• Assignee: GM Global Technology Operations LLC (Detroit, MI)
• Patent Number(s): 8,097,802
• Application Number: 12/434,333
• OSTI ID: 1034909
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE