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Nano ZrO2/CoSb3 com...
Nano ZrO2/CoSb3 composites with improved thermoelectric figure of merit
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He, Zeming (author)
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Stiewe, Christian (author)
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Platzek, Dieter (author)
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Karpinski, Gabriele (author)
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Mueller, Eckhard (author)
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- Li, Shanghua (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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- Toprak, Muhammet (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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- Muhammed, Mamoun (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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(creator_code:org_t)
- 2007-05-16
- 2007
- English.
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In: Nanotechnology. - : IOP Publishing. - 0957-4484 .- 1361-6528. ; 18:23, s. 235602-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Nano ZrO2/CoSb3 composites with different ZrO 2 contents were prepared using hot pressing. The phase purity, the microstructure and the temperature-dependent transport parameters of the composites were investigated. The dimensionless figure of merit (ZT) of 0.18 of the non-dispersed CoSb3 preponderates the maximal value (0.17) of pure CoSb3 reported in the literature, which is attributed to the prepared sample having higher electrical conductivity due to the existence of a small amount of metallic Sb and lower thermal conductivity due to the fine-grained structure. Compared to non-dispersed CoSb3, a further improvement of 11% on ZT (0.20) was achieved in the composite with 0.05ZrO 2 inclusions, which resulted from the enhanced ratio of electrical conductivity to thermal conductivity and the Seebeck coefficient. The nanodispersion method provides an effective approach to improving a material's thermoelectric properties and performance.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Cobalt compounds
- Electric conductivity
- Hot pressing
- Seebeck coefficient
- Thermal conductivity
- Zirconia
- Materials chemistry
- Materialkemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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