Furukawa Co., Ltd.

Junqing Guo

Takahiro Ochi

Shogo Suzuki

Masaaki Kikuchi

Taketoshi Tomida

Ge Nie

Satoru Ito

Atsuro Sumiyoshi

Huiyuan Geng

Shunichi Ochi

A method of manufacturing a thermoelectric conversion material includes a sintering step. In the sintering step, a sintered body of a sintered material () is obtained by applying a voltage to a conductive mold () in a first direction so as to cause energization under the condition in which an insulating layer () is disposed in at least a portion between an inner wall () of the mold () and the sintered material () and the insulating layer () keeps having insulating properties. Here, the sintered body is a thermoelectric conversion substance.

Method of manufacturing thermoelectric conversion material

A thermoelectric conversion material having excellent thermoelectric performance over a wide temperature range, and a thermoelectric conversion module providing excellent junctions between thermoelectric conversion materials and electrodes. An R-T-M-X-N thermoelectric conversion material has a structure expressed by the following formula: RTMXN(0&#x2264;r&#x2264;1, 3&#x2264;t&#x2212;m&#x2264;5, 0&#x2264;m&#x2264;0.5, 10&#x2264;x&#x2264;15, 0&#x2264;n&#x2264;2), where R represents three or more elements selected from the group consisting of rare earth elements, alkali metal elements, alkaline-earth metal elements, group 4 elements, and group 13 elements, T represents at least one element selected from Fe and Co, M represents at least one element selected from the group consisting of Ru, Os, Rh, Ir, Ni, Pd, Pt, Cu, Ag, and Au, X represents at least one element selected from the group consisting of P, As, Sb, and Bi, and N represents at least one element selected from Se and Te.

Thermoelectric conversion material and thermoelectric conversion module

A thermoelectric conversion material has a composition represented by General Formula LRTMSb. Here, L includes at least one element selected from rare earth elements. R includes two or more elements selected from the group consisting of alkali metal elements, alkali earth metal elements, Group 4 elements, and Group 13 elements. T includes at least one element selected from Fe and Co. M includes at least one element selected from the group consisting of Ru, Os, Rh, Ir, Ni, Pd, Pt, Cu, Ag, and Au. In addition, 0.50&#x2264;k&#x2264;1.00, 0.1&#x2264;r&#x2264;0.5, 3.0&#x2264;t&#x2212;m&#x2264;5.0, 0&#x2264;m&#x2264;0.5, 10.0&#x2264;x&#x2264;11.5, and x/t&#x3c;3.0 are satisfied.

Thermoelectric conversion material

Provided is a thermoelectric conversion material including a plurality of kinds of phases including a first phase and a second phase which have elemental compositions different from each other. The first phase and the second phase have a skutterudite structure.

Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module, thermoelectric generator, thermoelectric conversion system, and method of manufacturing thermoelectric conversion material

A thermal stress of electrode members (to) due to an operation temperature may be relaxed by thermal stress relaxation layers (to), and thus peeling of the electrode members (to) due to thermal stress at the operation temperature may be prevented in a satisfactory manner. Furthermore, diffusion of a constituent component of the thermoelectric conversion members (and) due to the operation temperature and the like may be prevented by diffusion prevention layers (to), and thus durability and stability of the thermoelectric conversion module () may be improved.

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Ibaraki, Japan

Junqing Guo