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Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application

文献类型：期刊论文

作者Piao, Mingxing1; Chu, Jin1; Wang, Xiao1; Chi, Yao1; Zhang, Heng1; Li, Chaolong1; Shi, Haofei1; Joo, Min-Kyu2
刊名Nanotechnology
出版日期2018
卷号29期号:2
ISSN号09574484
DOI10.1088/1361-6528/aa9bfe
英文摘要Two-dimensional materials have gained great attention as a promising thermoelectric (TE) material due to their unique density of state with confined electrons and holes. Here, we synthesized 1T phase tungsten disulfide (WS2) nanosheets with high TE performance via the hydrothermal method. Flexible WS2nanosheets restacked thin films were fabricated by employing the vacuum filtration technique. The measured electrical conductivity was 45 S cm-1with a Seebeck coefficient of +30 μV K-1at room temperature, indicating a p-type characteristic. Furthermore, the TE performance could be further improved by thermal annealing treatment. It was found the electrical conductivity could be enhanced 2.7 times without sacrificing the Seebeck coefficient, resulting in the power factor of 9.40 μW m-1K-2. Moreover, such 1T phase WS2nanosheets possess high phase stability since the TE properties maintained constant at least half one year in the air atmosphere. Notably, other kinds of 1T phase transitional metal dichalcogenides (TMDCs) with excellent TE performance also could be imitated by using the procedure in this work. Finally, we believe a variety of materials based on 1T phase TMDCs nanosheets have great potential as candidate for future TE applications. © 2017 IOP Publishing Ltd.
电子版国际标准刊号13616528
语种英语
源URL[http://119.78.100.138/handle/2HOD01W0/8053]  
专题中国科学院重庆绿色智能技术研究院
作者单位1.Key Laboratory of Multi-Scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China;
2.Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon; 16419, Korea, Republic of
推荐引用方式
GB/T 7714		 Piao, Mingxing,Chu, Jin,Wang, Xiao,et al. Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application[J]. Nanotechnology,2018,29(2).
APA Piao, Mingxing.,Chu, Jin.,Wang, Xiao.,Chi, Yao.,Zhang, Heng.,...&Joo, Min-Kyu.(2018).Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application.Nanotechnology,29(2).
MLA Piao, Mingxing,et al."Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application".Nanotechnology 29.2(2018).

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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