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Synergistic modulation of the thermoelectric performance of melt-spun p-type Mg2Sn via Na2S and Si alloying

文献类型：期刊论文

作者Huang, Yuling4,5; Zheng, Sikang4,5; Liao, Huijun1; Qiao, Saisai4,5; Han, Guang1,6,7; Wang, Guoyu2; Huang, Zhengyong1; Li, Jian1; Lu, Xu1,4,5; Zhou, Xiaoyuan3,4,5,7
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2022-01-28
页码8
ISSN号2050-7488
DOI10.1039/d1ta10582e
通讯作者Han, Guang(guang.han@cqu.edu.cn) ; Lu, Xu(luxu@cqu.edu.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要Mg2Sn, comprising low-cost, earth-abundant and environmentally friendly elements, is a promising candidate for thermoelectric applications in a medium temperature range. In contrast to the well-developed high-performance n-type Mg2Sn materials, the thermoelectric performance of their p-type counterparts still remains much inferior. Herein, p-type Mg2Sn-based materials with combined addition of Na2S and Si have been rapidly synthesized via melt spinning and hot pressing toward enhanced thermoelectric performance from 300 K to 723 K. Detailed diffraction and microscopy characterization reveals that both Na2S and Si are alloyed into Mg2Sn, forming complete Mg2Sn-based solid solutions. The compositional modification optimizes the carrier concentration and strengthens phonon scattering, resulting in a much-enhanced power factor of 1.8 mW m(-1) K-2 at 673 K and a low total thermal conductivity of 2.0 W m(-1) K-1 at 523 K. Finally, a peak zT value of similar to 0.52 is reached in (Mg2Sn0.9Si0.1)(0.93)(Na2S)(0.07) at 673 K, which is one of the highest values for p-type Mg2Sn-based materials. This study provides an effective strategy for the synergistic modulation of electrical and thermal transport properties of p-type Mg2Sn.
资助项目National Natural Science Foundation of China[52071041] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51802034] ; National Natural Science Foundation of China[51877023] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000755909400001
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.138/handle/2HOD01W0/15271]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Han, Guang; Lu, Xu; Zhou, Xiaoyuan
作者单位1.Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400030, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
4.Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China
5.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
6.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
7.Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Yuling,Zheng, Sikang,Liao, Huijun,et al. Synergistic modulation of the thermoelectric performance of melt-spun p-type Mg2Sn via Na2S and Si alloying[J]. JOURNAL OF MATERIALS CHEMISTRY A,2022:8.
APA Huang, Yuling.,Zheng, Sikang.,Liao, Huijun.,Qiao, Saisai.,Han, Guang.,...&Zhou, Xiaoyuan.(2022).Synergistic modulation of the thermoelectric performance of melt-spun p-type Mg2Sn via Na2S and Si alloying.JOURNAL OF MATERIALS CHEMISTRY A,8.
MLA Huang, Yuling,et al."Synergistic modulation of the thermoelectric performance of melt-spun p-type Mg2Sn via Na2S and Si alloying".JOURNAL OF MATERIALS CHEMISTRY A (2022):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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