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无机材料学报

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2010 , Vol. 25 >Issue 6: 669 - 672

DOI: https://doi.org/10.3724/SP.J.1077.2010.00669

研究论文

新型氧化物(Ca0.85-xNdxOH)1.16CoO2的水热合成及热电性能

  • 裴 健 ,
  • 陈 刚 ,
  • 王 群 ,
  • 金仁成
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  • (哈尔滨工业大学 化学系, 哈尔滨  150001)

收稿日期: 2009-10-14

  修回日期: 2009-12-28

  网络出版日期: 2010-05-12

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Hydrothermal Synthesis and Thermoelectric Properties of New Oxides (Ca0.85-xNdxOH)1.16CoO2

  • PEI Jian ,
  • CHEN Gang ,
  • WANG Qun ,
  • JIN Ren-Cheng
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  • (Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China)

Received date: 2009-10-14

  Revised date: 2009-12-28

  Online published: 2010-05-12

Supported by

National Natural Science Foundation of China (20871036); Foundation of Harbin Subject Chief Scientist (2006RFXXG001)

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摘要

采用水热法制备了一系列具有片状形貌的(Ca0.85OH)1.16CoO2热电材料, 并研究了Nd掺杂对该材料结构及热电性能的影响. 结果表明, 所制备的样品均为p型材料, 在473K以下, 材料的热电系数随着Nd含量的增加而增大; Nd掺杂后, 材料的载流子浓度和载流子迁移率均发生变化, 因此材料的电导率随着Nd含量的增加先增大后减小; 在573K时, (Ca0.75Nd0.1OH)1.16CoO2材料的功率因子达到7.06×10-5 W/(m·K2).

关键词： 水热合成; 层状钴氧化物; 热电性能

本文引用格式

裴 健 , 陈 刚 , 王 群 , 金仁成 . 新型氧化物(Ca0.85-xNdxOH)1.16CoO2的水热合成及热电性能[J]. 无机材料学报, 2010 , 25(6) : 669 -672 . DOI: 10.3724/SP.J.1077.2010.00669

Abstract

Plate-like particles of (Ca0.85OH)1.16CoO2 were prepared in which Nd was partially substituted for Ca to improve the thermoelectric performance. The values of Seebeck coefficient of as-synthesized oxides are all positive, showing that these oxides are p-type materials. The electrical conductivity initially decreases then increases with increasing Nd-doped amount, which is the coeffect of carrier concentration and carrier mobility. The Seebeck coefficient increases with the increasing Nd-doped amount below 473K. The power factor reaches 7.06×10-5 W/(m·K2) at 573K for (Ca0.75Nd0.1OH)1.16CoO2.

Key words： hydrothermal synthesis; layered cobalt oxide; thermoelectric properties

参考文献

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