Revisiting AgCrSe2 as a promising thermoelectric material

doi:10.1039/c6cp04791b

HFCAS OpenIR > 中科院固体物理研究所

	Revisiting AgCrSe2 as a promising thermoelectric material
	Wu, Di 1; Huang, Sizhao 1; Feng, Dan 1; Li, Bing 2; Chen, Yuexing 1; Zhang, Jian 1,3; He, Jiaqing 1
	2016-09-14
发表期刊	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c6cp04791b
关键词[WOS]	PERFORMANCE BULK THERMOELECTRICS ; THERMAL-CONDUCTIVITY ; HIERARCHICAL ARCHITECTURES ; COMPOSITES ; EFFICIENCY ; TELLURIDE ; ORIGIN ; ALLOYS ; CUCRS2 ; PHASE
收录类别	SCI
语种	英语
项目资助者	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)
WOS研究方向	Chemistry ; Physics
WOS类目	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000382107200049
引用统计	被引频次：53[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/24643
专题	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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