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

doi:10.3724/SP.J.1077.2010.00669

无机材料学报 ›› 2010, Vol. 25 ›› Issue (6): 669-672.DOI: 10.3724/SP.J.1077.2010.00669 CSTR: 32189.14.SP.J.1077.2010.00669

• 研究论文 • 上一篇

新型氧化物(Ca_0.85-xNd_xOH)_1.16CoO₂的水热合成及热电性能

裴健, 陈刚, 王群, 金仁成

(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 出版日期:2010-06-20 网络出版日期:2010-05-12

Hydrothermal Synthesis and Thermoelectric Properties of New Oxides (Ca_0.85-xNd_xOH)_1.16CoO₂

PEI Jian, CHEN Gang, WANG Qun, JIN Ren-Cheng

(Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China)

Received:2009-10-14 Revised:2009-12-28 Published:2010-06-20 Online:2010-05-12
Supported by:
National Natural Science Foundation of China (20871036); Foundation of Harbin Subject Chief Scientist (2006RFXXG001)

摘要/Abstract

摘要： 采用水热法制备了一系列具有片状形貌的(Ca_0.85OH)_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, (Ca_0.75Nd_0.1OH)_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

Abstract: Plate-like particles of (Ca_0.85OH)_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 (Ca_0.75Nd_0.1OH)_1.16CoO₂.

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

中图分类号:

TN34

裴健, 陈刚, 王群, 金仁成. 新型氧化物(Ca_0.85-xNd_xOH)_1.16CoO₂的水热合成及热电性能[J]. 无机材料学报, 2010, 25(6): 669-672.

PEI Jian, CHEN Gang, WANG Qun, JIN Ren-Cheng. Hydrothermal Synthesis and Thermoelectric Properties of New Oxides (Ca_0.85-xNd_xOH)_1.16CoO₂[J]. Journal of Inorganic Materials, 2010, 25(6): 669-672.

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新型氧化物(Ca_0.85-xNd_xOH)_1.16CoO₂的水热合成及热电性能

Hydrothermal Synthesis and Thermoelectric Properties of New Oxides (Ca_0.85-xNd_xOH)_1.16CoO₂

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