sesubstitutionandmicronanoscaleporosityenhancingthermoelectriccu2te
文献类型：期刊论文
| 作者 | Shi Xiaoman4; Wang Guoyu2 ; Wang Ruifeng2; Zhou Xiaoyuan1; Xu Jingtao3; Tang Jun4; Ang Ran4
|
| 刊名 | chinesephysicsb
 |
| 出版日期 | 2018 |
| 卷号 | 27期号:4 |
| ISSN号 | 1674-1056 |
| 英文摘要 | Binary Cu-based chalcogenide thermoelectric materials have attracted a great deal of attention due to their outstanding physical properties and fascinating phase sequence. However, the relatively low figure of merit zT restricts their practical applications in power generation. A general approach to enhancing zT value is to produce nanostructured grains, while one disadvantage of such a method is the expansion of grain size in heating-up process. Here, we report a prominent improvement of zT in Cu2Te0.2Se0.8, which is several times larger than that of the matrix. This significant enhancement in thermoelectric performance is attributed to the formation of abundant porosity via cold press. These pores with nano-to micrometer size can manipulate phonon transport simultaneously, resulting in an apparent suppression of thermal conductivity. Moreover, the Se substitution triggers a rapid promotion of power factor, which compensates for the reduction of electrical properties due to carriers scattering by pores. Our strategy of porosity engineering by phonon scattering can also be highly applicable in enhancing the performances of other thermoelectric systems. |
| 资助项目 | [National Natural Science Foundation of China] ; [Youth Foundation of Science and Technology Department of Sichuan Province, China] ; [Sichuan University Outstanding Young Scholars Research Funding] ; [World First-Class University Construction Funding] ; [Fundamental and Frontier Research Project in Chongqing] |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/8989]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.重庆大学 2.中国科学院重庆绿色智能技术研究院 3.中国科学院 4.四川大学 |
| 推荐引用方式 GB/T 7714 | Shi Xiaoman,Wang Guoyu,Wang Ruifeng,et al. sesubstitutionandmicronanoscaleporosityenhancingthermoelectriccu2te[J]. chinesephysicsb,2018,27(4). |
| APA | Shi Xiaoman.,Wang Guoyu.,Wang Ruifeng.,Zhou Xiaoyuan.,Xu Jingtao.,...&Ang Ran.(2018).sesubstitutionandmicronanoscaleporosityenhancingthermoelectriccu2te.chinesephysicsb,27(4). |
| MLA | Shi Xiaoman,et al."sesubstitutionandmicronanoscaleporosityenhancingthermoelectriccu2te".chinesephysicsb 27.4(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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