高压烧结法制备Bi2Te3纳米晶块体热电性能的研究

吴芳; 王伟

doi:10.7498/aps.64.047201

摘要

用高压烧结法对水热法制备的Bi2Te3纳米线及纳米颗粒粉体进行了压制成型, 并与真空热压法制备的样品进行了形貌和热电性能的比较. 研究表明, 高压烧结样品内的晶粒尺寸明显小于热压样品. 热电性能的研究表明, 高压烧结样品的电阻率、赛贝克系数和热导率均优于真空热压样品. 由纳米线粉体高压烧结的样品其热电优值ZT 在室温时达到了0.5, 高于真空热压样品的值, 表明高压烧结是热电材料纳米粉体成型的一种有效方法.

关键词:

Abstract

Bi2Te3 nanowires and nanoparticles are synthesized by hydrothermal method, and the nanopowders are pressed into bulk pellets by high-pressure sintering or vacuum hot-pressed. The scanning electron microscope (SEM) results and thermal properties of such bulk samples are compared. The SEM result shows that the grain size of the high-pressure sintering sample is much smaller than that of the hot-pressed sample. The thermal properties show that the electrical resistivity, Seebeck coefficient, and thermal conductivity of the high-pressure sintering sample are all better than those of the hot-pressed sample. The ZT value of the high-pressure sintering sample prepared by nanowires reaches 0.5 at room temperature, which is much higher than that of the hot-pressed sample. Therefore the high-pressure sintering provides an effective method to press nanopowders to bulk.

Keywords:

作者及机构信息

吴芳^1,3,
王伟²

1.
河南教育学院物理与电子工程学院, 郑州 450046;

2.
中州大学信息工程学院, 郑州 450044;

3.
郑州大学物理工程学院, 材料物理教育部重点实验室, 郑州 450052

基金项目: 河南省重点科技攻关项目(批准号: 142102210043)和河南省教育厅科学技术研究重点项目(批准号: 14A140017)资助的课题.

Authors and contacts

Wu Fang^1,3,
Wang Wei²

1.
School of Physical and Electronic Engineering, Henan Institute of Education, Zhengzhou 450046, China;

2.
School of Information Engineering, Zhongzhou University, Zhengzhou 450044, China;

3.
Key Laboratory of Material Physics, Ministry of Education, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China

Funds: Project supported by the Science and Technology Development Program of Henan Province, China (Grant No. 142102210043) and the Key Program of Science and Technology Research of Henan Educational Committee, China (Grant No. 14A140017).

参考文献

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[28]	Wang S Y, Xie W J, Li H, Tang X F 2011 Intermetallics 19 1024

施引文献

[1]	Baxter J, Bian Z X, Chen G, Danielson D, Dresselhaus M S, Fedorov A G, Fisher T S, Jones C W, Maginn E, Kortshagen U, Manthiram A, Nozik A, Rolison D R, Sands T, Shi L, Sholl D, Wu Y Y 2009 Energ. Environ. Sci. 2 559
[2]	Wu S H, Ryosuke N, Masatsugu, Zhang Q S, Chihaya A 2014 Chin. Phys. B 23 098502
[3]	Liu N, Luo X G, Zhang M L 2014 Chin. Phys. B 23 080502
[4]	Snyder G J, Toberer E S 2008 Nat. Mater. 7 105
[5]	Yang M J, Shen Q, Zhang L M 2011 Chin. Phys. B 20 106202
[6]	Chung D Y, Hogan T, Brazis P, Rocci-Lane M, Kannewurf C, Bastea M, Uher C, Kanatzidis M G 2000 Science 287 1024
[7]	Venkatasubramanian R, Siivola E, Colpitts T, O'Quinn B 2001 Nature 413 597
[8]	Zhao X B, Ji X H, Zhang Y H, Zhu T J, Tu J P, Zhang X B 2005 Appl. Phys. Lett. 86 062111
[9]	Jiang M B, Wu Z X, Zhou M, Huang R J, Li L F 2010 Acta Phys. Sin. 59 7314 (in Chinese) [蒋明波, 吴智雄, 周敏, 黄荣进, 李来风 2010 59 7314]
[10]	Vineis C J, Shakouri A, Majumdar A, Kanatzidis M G 2010 Adv. Mater. 22 3970
[11]	Fan X A, Yang J Y, Xie Z, Li K, Zhu W, Duan X K, Xiao C J, Zhang Q Q 2007 J. Phys. D: Appl. Phys. 40 5975
[12]	Xu Y B, Ren Z M, Cao G H, Ren W L, Deng K, Zhong Y B 2009 Physica B 404 4029
[13]	Sun Z L, Liufu S C, Yao Q, Chen L D 2010 Mater. Chem. Phys. 121 138
[14]	Zhao Y M, Hughes R W, Su Z X, Zhou W Z, Gregory D H 2011 Angew. Chem. Int. Ed. 50 10397
[15]	Lu W G, Ding Y, Chen Y X, Wang Z L, Fang J Y 2005 J. Am. Chem. Soc. 127 10112
[16]	Poudel B, Hao Q, Ma Y, Lan Y C, Minnich A, Yu B, Yan X A, Wang D Z, Muto A, Vashaee D, Chen X Y, Liu J M, Dresselhaus M S, Chen G, Ren Z F 2008 Science 320 634
[17]	Liao S C, Mayo W E, Pae K D 1997 Acta Mater. 45 4027
[18]	Godwal B K, Jayaraman A, Meenakshi S 1998 Phys. Rev. B 57 773
[19]	Polvani D A, Meng J F, Shekar N V C, Sharp J, Badding J V 2001 Chem. Mater. 13 2068
[20]	Thonhauser T, Jeon G S, Mahan G D, Sofo J O 2003 Phys. Rev. B 68 205207
[21]	Thonhauser T, Scheidemantel T J, Sofo J O, Badding J V, Mahan G D 2003 Phys. Rev. B 68 085201
[22]	Ovsyannikov S V, Shchennikov V V 2010 Chem. Mater. 22 635
[23]	Liu W S, Yan X, Chen G, Ren Z F 2012 Nano Energy 1 42
[24]	Liu W S, Zhang Q Y, Lan Y C, Chen S, Yan X, Zhang Q, Wang H, Wang D Z, Chen G, Ren Z F 2011 Adv. Energy Mater. 1 577
[25]	Burstein E 1954 Phys. Rev. 93 632
[26]	Yu B L, Tang X F, Qi Q, Zhang Q 2004 Acta Phys. Sin. 53 3130 (in Chinese) [余柏林, 唐新峰, 祁琼, 张清 2004 53 3130]
[27]	Lan Y C, Minnich A J, Chen G, Ren Z F 2010 Adv. Funct. Mater. 20 357
[28]	Wang S Y, Xie W J, Li H, Tang X F 2011 Intermetallics 19 1024

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