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Realizing both n- and p-types of high thermoelectric performance in Fe1-xNixTiSb half-Heusler compounds

文献类型：期刊论文

作者Li, Nanhai1,5; Zhu, Huaxing1; He, Wenlu1; Zhang, Bing4; Cui, Wenjun2,3; Hu, Zhi-Yi2,3; Sang, Xiahan2,3; Lu, Xu1; Wang, Guoyu5; Zhou, Xiaoyuan1,4
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2020-03-07
卷号8期号:9页码:3156-3164
ISSN号2050-7526
DOI10.1039/c9tc06318h
通讯作者Lu, Xu(luxu@cqu.edu.cn) ; Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要Achieving high thermoelectric performance in the same compounds with close composition is crucial for practical applications. Hereby, Fe1-xNixTiSb samples are synthesized by arc melting, ball milling and hot pressing, which exhibit both n- and p-type conducting behavior depending on the Fe/Ni ratio. The random distribution of Fe/Ni on the 4c sublattice, which is closely related to low lattice thermal conductivity, is determined by transmission electron microscopy. In addition, the optimum ball milling time, which varies with different compositions, is determined by transport coefficient analysis. Moreover, the thermoelectric transport properties of Fe1-xNixTiSb samples are investigated in detail and the results indicate that Fe/Ni substitution leads to an increase in the density of states effective masses and reduction in lattice thermal conductivity. As a result, a dimensionless figure of merit of 0.48 is obtained for p-type Fe0.65Ni0.35TiSb and 0.40 for n-type Fe0.3Ni0.7TiSb at 923 K, which is comparable to that of CoTiSb but without expensive elements. Our results will motivate continuous efforts in searching for new half-Heusler compounds having high thermoelectric performance in both n- and p-types with close compositions.
资助项目National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51672270] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51902237] ; Fundamental Research Funds for the Central Universities[WUT: 2019III012GX] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2017JCYJAX0388]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000519972600024
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.138/handle/2HOD01W0/10636]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Lu, Xu; Wang, Guoyu; Zhou, Xiaoyuan
作者单位1.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
2.Wuhan Univ Technol, NRC, 122 Luoshi Rd, Wuhan 430070, Peoples R China
3.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, 122 Luoshi Rd, Wuhan 430070, Peoples R China
4.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, 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		 Li, Nanhai,Zhu, Huaxing,He, Wenlu,et al. Realizing both n- and p-types of high thermoelectric performance in Fe1-xNixTiSb half-Heusler compounds[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(9):3156-3164.
APA Li, Nanhai.,Zhu, Huaxing.,He, Wenlu.,Zhang, Bing.,Cui, Wenjun.,...&Zhou, Xiaoyuan.(2020).Realizing both n- and p-types of high thermoelectric performance in Fe1-xNixTiSb half-Heusler compounds.JOURNAL OF MATERIALS CHEMISTRY C,8(9),3156-3164.
MLA Li, Nanhai,et al."Realizing both n- and p-types of high thermoelectric performance in Fe1-xNixTiSb half-Heusler compounds".JOURNAL OF MATERIALS CHEMISTRY C 8.9(2020):3156-3164.

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来源：重庆绿色智能技术研究院

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