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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >High thermoelectric performance in Cu2Se superionic conductor with enhanced liquid-like behaviour by dispersing SiC
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High thermoelectric performance in Cu2Se superionic conductor with enhanced liquid-like behaviour by dispersing SiC

机译：Cu2SE外离子导体中的高热电性能，通过分散SiC具有增强的液体样行为

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摘要

The liquid-like thermoelectric material Cu2Se has shown great promise in recent years by virtue of its good electrical properties and inherent low thermal conductivity, which could be optimized by engineering liquid copper ions for further application. Herein, we reported, for the first time, that thermoelectric performance could be remarkably improved via introducing SiC nanoparticles into the Cu2Se system. Experimental results proved that additional SiC generated more deformation and stress, which feasibly facilitated more migration of charged copper ions and in turn increased conductivity. A maximum enhancement in electrical conductivity of about 7 times in the composite with 0.05wt% SiC content was obtained compared with the pure Cu2Se, consistent with an increase in phonon scattering by additional interfaces. We obtained a high figure of merit, ZT, of 2.0 at 875 K in the Cu2Se/0.05 wt% SiC composite, which was 186% higher than that of the pure Cu2Se (approximate to 0.7).
机译：近年来，近年来，液体样热电材料Cu2Se凭借其良好的电性能和固有的低导热率，可以通过工程液铜离子进行优化，以进一步应用。 在此，我们首次报道了通过将SiC纳米颗粒引入CU2SE系统中可以显着改善热电性能。 实验结果证明，额外的SiC产生更多的变形和应力，可自由地促进加入铜离子的更加迁移，又增加导电性。 与纯Cu2SE相比，获得了与0.05wt％SiC含量的复合材料中约7次的电导率的最大增强，符合另外的接口的声子散射的增加。 在Cu2SE / 0.05wt％的SiC复合材料中获得875 k的2.0的高值，ZT为2.0，其比纯Cu2SE高出186％（近似为0.7）。

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    Lei Jingdan; Ma Zheng; Zhang De; Chen Yanqun; Wang Chao; Yang Xiaoyun; Cheng Zhenxiang; Wang Yuanxu;

  • 作者单位

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Zhengzhou Technol &

    Business Univ Business Sch Zhengzhou 451400 Henan Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

    Henan Univ Sch Phys &

    Elect Inst Computat Mat Sci Kaifeng 475004 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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