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Revisiting AgCrSe2 as a promising thermoelectric material

文献类型：期刊论文

作者Wu, Di1; Huang, Sizhao1; Feng, Dan1; Li, Bing2; Chen, Yuexing1; Zhang, Jian1,3; He, Jiaqing1
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
出版日期2016-09-14
卷号18期号:34页码:23872-23878
DOI10.1039/c6cp04791b
文献子类Article
英文摘要We revisited and investigated a layer-structured thermoelectric material AgCrSe2, which has an extremely low thermal conductivity. After using both differential scanning calorimetry and a comparative laser flash method, we realized that the specific heat of this material, the main contributor to the reported low thermal conductivity, is unlikely to be way below the Dulong-Petit limit as revealed in the literature. Besides, our in situ X-ray diffraction pattern up to 873 K indicated the instability of AgCrSe2 over 723 K, where it begins to decompose into Cr2Se3 and Ag2Se. This unexpected decomposition phenomenon resulted in the gradual increment of specific heat and thermal diffusivity, hence the deterioration of the overall thermoelectric performance. We deliberately introduced Ag and Cr vacancies into the lattice for carrier concentration optimization and could achieve an optimal figure of merit of ZT similar to 0.5 at 723 K in the nominal composition Ag0.96CrSe2 in the direction perpendicular to the sintering press. Our findings suggest that more thorough investigations are necessary to ensure that AgCrSe2 is a promising thermoelectric material.
WOS关键词PERFORMANCE BULK THERMOELECTRICS ; THERMAL-CONDUCTIVITY ; HIERARCHICAL ARCHITECTURES ; COMPOSITES ; EFFICIENCY ; TELLURIDE ; ORIGIN ; ALLOYS ; CUCRS2 ; PHASE
WOS研究方向Chemistry ; Physics
语种英语
WOS记录号WOS:000382107200049
资助机构South University of Science and Technology of China ; South University of Science and Technology of China ; South University of Science and Technology of China ; South University of Science and Technology of China ; NSFC(11504160) ; NSFC(11504160) ; NSFC(11504160) ; NSFC(11504160) ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; KQCX2015033110182370) ; KQCX2015033110182370) ; KQCX2015033110182370) ; KQCX2015033110182370) ; South University of Science and Technology of China ; South University of Science and Technology of China ; South University of Science and Technology of China ; South University of Science and Technology of China ; NSFC(11504160) ; NSFC(11504160) ; NSFC(11504160) ; NSFC(11504160) ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; National 1000 Plan for Young Scientists ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ 20140612140151884 ; KQCX2015033110182370) ; KQCX2015033110182370) ; KQCX2015033110182370) ; KQCX2015033110182370)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/24643]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.South Univ Sci, Shenzhen Key Lab Thermoelect Mat, Dept Phys, Technol China, Shenzhen 518055, Peoples R China
2.Japan Atom Energy Agcy, Japan Proton Accelerator Res Complex, Tokai, Ibaraki 3191195, Japan
3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230032, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Di,Huang, Sizhao,Feng, Dan,et al. Revisiting AgCrSe2 as a promising thermoelectric material[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2016,18(34):23872-23878.
APA Wu, Di.,Huang, Sizhao.,Feng, Dan.,Li, Bing.,Chen, Yuexing.,...&He, Jiaqing.(2016).Revisiting AgCrSe2 as a promising thermoelectric material.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,18(34),23872-23878.
MLA Wu, Di,et al."Revisiting AgCrSe2 as a promising thermoelectric material".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 18.34(2016):23872-23878.

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来源：合肥物质科学研究院

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