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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Defect modulation on CaZn1-xAg1-ySb (0 x 1; 0 y 1) Zintl phases and enhanced thermoelectric properties with high zT plateaus
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Defect modulation on CaZn1-xAg1-ySb (0 x 1; 0 y 1) Zintl phases and enhanced thermoelectric properties with high zT plateaus

机译：Cazn1-XAG1-YSB（0＆LT; x 1; 0＆ y <0＆ y 1）粘附和高ZT PLATEA的增强热电性能缺陷调制

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摘要

Thermoelectric materials with high average figure of merit (zT) over the applied temperature range are crucial for power generation applications. In this report, a new Zintl series, CaZn1-xAg1-ySb (0 x 1; 0 y 1), was discovered and carefully investigated for their thermoelectric potential. These phases feature unique anionic layers with extensive Zn/Ag defects. Such a characteristic ensures very low intrinsic thermal conductivity and meanwhile considerably high electrical conductivity for the corresponding materials. For an optimized composition CaZn0.4Ag0.18Sb, decent thermoelectric performance was proved with a broad high zT plateau (zT approximate to 1.0) observed from 800 to 1100 K. The discovery of this new Zintl series not only provides us a valuable resource for exploring high zT materials, but also sheds some new light on the design of such thermoelectrics on the basis of defect modulation.
机译：在施加温度范围内具有高平均优点（ZT）的热电材料对于发电应用至关重要。 在本报告中，发现并仔细研究了一种新的Zintl系列CAZN1-XAG1-YSB（0＆ x 1; 0＆ y <1）。 这些阶段具有独特的阴离子层，具有广泛的Zn / Ag缺陷。 这种特性确保了非常低的内在导热系数，同时对相应材料具有显着高的电导率。 对于优化的组合物Cazn0.4ag0.18SB，从800到1100 K观察到了广泛的高ZT高原（ZT近似值）的体面的热电性能。这个新的Zintl系列的发现不仅为我们提供了一个有价值的探索资源 高ZT材料，但在缺陷调制的基础上，还在设计热电设计时缩小了一些新光。

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    Zhu Min; Wu Zhen; Liu Qian; Zhu Tie-Jun; Zhao Xin-Bing; Huang BaiBiao; Tao Xutang; Xia Sheng-Qing;

  • 作者单位

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong Peoples R China;

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong Peoples R China;

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong Peoples R China;

    Zhejiang Univ Dept Mat Sci &

    Engn State Key Lab Silicon Mat Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Dept Mat Sci &

    Engn State Key Lab Silicon Mat Hangzhou 310027 Zhejiang Peoples R China;

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong Peoples R China;

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong Peoples R China;

    Shandong Univ Inst Crystal Mat State Key Lab Crystal Mat Jinan 250100 Shandong 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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