Batteries: thermoelectric and photoelectric – Thermoelectric – Having particular thermoelectric composition
Patent
1997-03-19
1999-06-15
Gorgos, Kathryn
Batteries: thermoelectric and photoelectric
Thermoelectric
Having particular thermoelectric composition
136201, 1362361, 252 623T, 419 31, 419 38, 419 44, 419 53, 419 55, 419 56, 419 57, 420576, H01L 3518, H01L 3534, C22C 1200
Patent
active
059124296
ABSTRACT:
Thermoelectric material for high temperature use made of a sintered body of a relative density of at least 75% consisting mainly of cobalt antimony compounds having an elemental ratio Sb/(Co+additives)=x of 2.7<x<3 is produced by a method of firing a shaped body of powders consisting mainly of cobalt and antimony in a non-oxidizing atmosphere under an environmental pressure, wherein the shaped body before the firing is constituted from crystal phases composed of a cubic crystal system compound CoSb.sub.3 (A phase), a monoclinic crystal system compound CoSb.sub.2 (B phase) and a hexagonal crystal system compound CoSb (C phase), and constitutional ratio of these crystal phases is (I.sub.B +I.sub.C)/(I.sub.A +I.sub.B +I.sub.C)<0.15 (wherein, I.sub.X (X is A, B or C) is a relative intensity by X-ray diffraction).
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patent: 5610366 (1997-03-01), Fleurial et al.
L.D. Dudkin and N.Kh. Abrikosov: "On the Doping of the Semiconductor Compound CoSb.sub.3 " pp. 126-133, Jan. 1958.
B.N. Zobrina and L.D. Dudkin: "Investigation of the Thermoelectric Properties of CoSb.sub.3 with Sn, Te and Ni Impurities" pp. 1668-1674, Dec., 1959.
K. Matsubara, T. Iyanaga, T. Tsubouchi, K. Kishimoto and T. Koyanagi: "Thermoelectric Properties of (pd, Co) Sb.sub.3 Compounds with Skutterudite Structure", 1995, pp. 226-229 Am. Inst. of Physics.
Thierry Caillat, Alex Borshchevsky and Jean-Pierre Fleurial: "Preparation and Thermoelectric Properties of p- and n-Type CoSb.sub.3 "; 1995 American Institute of Physics, pp. 58-61.
"Investigations of Several New Advanced Thermoelectric Materials at the Jet Propulsion Laboratory"; T. Caillat et al.; Proceedings Intersociety Energy Conversion Engineering Conference, Boston, 14th, 1979; Aug. 8, 1993 pp. 1.245-1.248, XP000428309 *p. 1245, paragraph 1*.
Imanishi Yuichiro
Kobayashi Masakazu
Miyoshi Makoto
Shinohara Kazuhiko
Carroll Chrisman D.
Gorgos Kathryn
NGK Insulators Ltd.
Nissan Motor Co,. Ltd.
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