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Ultralow Lattice Thermal Conductivity of Cubic CuFeS2 Induced by Atomic Disorder

文献类型：期刊论文

作者Zhang, De1,2; Zhang, Bin3; Zhou, ZiZhen1,2; Peng, Kunling1,2; Wu, Hong1,2; Wang, Hengyang4; Wang, Guiwen3; Han, Guang4; Wang, Guoyu5; Zhou, Xiaoyuan1,2,3
刊名CHEMISTRY OF MATERIALS
出版日期2021-12-15
页码8
ISSN号0897-4756
DOI10.1021/acs.chemmater.1c03785
通讯作者Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn) ; Lu, Xu(luxu@cqu.edu.cn)
英文摘要Lattice thermal conductivity is of great importance to design high-performance thermoelectric (TE) materials. In chalcopyrite (CuFeS2) with an ordered tetragonal structure, which is an environmentally friendly TE material, the lattice thermal conductivity is as high as 9.0 W m(-1) K-1 at 300 K. Here, we demonstrate that the lattice thermal conductivity of CuFeS2 is significantly reduced from 9.0 to 1.5 W m(-1) K-1 by the phase regulation at ambient temperature, in which the tetragonal structure is transformed to the cubic structure. It is verified that the dramatically reduced lattice thermal conductivity essentially originates from the enlargement of the Gruneisen parameter caused by disordered atom rearrangement and lattice distortion. By further alloying with Al, the lattice thermal conductivity of the cubic CuFeS2 polycrystalline compound approaches a predicted glass limit value of 0.45 W m(-1) K-1 at 723 K. The results highlight the potential of realizing low lattice thermal conductivity by atomic disorder in TE compounds with intrinsically high lattice thermal conductivity.
资助项目National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51877023] ; Fundamental Research Funds for the Central Universities[2019CDXYFXCS0006] ; Chongqing Entrepreneurship and Innovation Program for the Returned Overseas Chinese Scholars[cx2019002]
WOS研究方向Chemistry ; Materials Science
语种英语
WOS记录号WOS:000733839200001
出版者AMER CHEMICAL SOC
源URL[http://119.78.100.138/handle/2HOD01W0/14758]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Zhou, Xiaoyuan; Lu, Xu
作者单位1.Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China
2.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
3.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
4.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China
5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, De,Zhang, Bin,Zhou, ZiZhen,et al. Ultralow Lattice Thermal Conductivity of Cubic CuFeS2 Induced by Atomic Disorder[J]. CHEMISTRY OF MATERIALS,2021:8.
APA Zhang, De.,Zhang, Bin.,Zhou, ZiZhen.,Peng, Kunling.,Wu, Hong.,...&Lu, Xu.(2021).Ultralow Lattice Thermal Conductivity of Cubic CuFeS2 Induced by Atomic Disorder.CHEMISTRY OF MATERIALS,8.
MLA Zhang, De,et al."Ultralow Lattice Thermal Conductivity of Cubic CuFeS2 Induced by Atomic Disorder".CHEMISTRY OF MATERIALS (2021):8.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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