添加La的Bi2Te3和Bi0.5Sb1.5Te3热电材料的电磁感应熔炼法制备及其热电性能

引用本文: 傅继澎, 杨秀云, 张姗姗, 高莹, 高秀霞, 李云辉. 添加La的Bi₂Te₃和Bi_0.5Sb_1.5Te₃热电材料的电磁感应熔炼法制备及其热电性能[J]. 应用化学, 2012, 29(9): 1096-1098. doi: 10.3724/SP.J.1095.2012.00469 shu

Citation: FU Jipeng, YANG Xiuyun, ZHANG Shanshan, GAO Ying, GAO Xiuxia, LI Yunhui. Synthesis of La-Doped Bi₂Te₃ and Bi_0.5Sb_1.5Te₃ via the Electromagnetic Induction Method and Their Thermoelectric Properties[J]. Chinese Journal of Applied Chemistry, 2012, 29(9): 1096-1098. doi: 10.3724/SP.J.1095.2012.00469 shu

添加La的Bi₂Te₃和Bi_0.5Sb_1.5Te₃热电材料的电磁感应熔炼法制备及其热电性能

1.
长春理工大学化学与环境工程学院长春 130022

通讯作者: 李云辉,教授;Tel:0431-85582361;Fax:0431-86804621;E-mail:liyh@cust.edu.cn;研究方向:光电功能材料

基金项目:
吉林省教育厅基金(200743)资助项目 (200743)

摘要: 在N₂气保护下,采用电磁感应法制备了添加La的Bi₂Te₃和Bi_0.5Sb_1.5Te₃。运用X射线粉末衍射、电感耦合等离子光谱和扫描电子显微镜对材料的物相成分和形貌进行了表征。研究了La对Bi₂Te₃和Bi_0.5Sb_1.5Te₃热电材料的电导率(σ)、Seebeck系数(S)和热导率(κ)的影响。实验结果表明,添加La明显降低了2种材料的热导率,提高了热电优值(ZT),添加La的Bi_0.5Sb_1.5Te₃的热电优值在室温超过了1。

关键词:

热电材料
/ 稀土La
/ 电磁感应

English

Synthesis of La-Doped Bi₂Te₃ and Bi_0.5Sb_1.5Te₃ via the Electromagnetic Induction Method and Their Thermoelectric Properties

1.
School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China

Corresponding author: 李云辉,教授;Tel:0431-85582361;Fax:0431-86804621;E-mail:liyh@cust.edu.cn;研究方向:光电功能材料

Received Date: 24 October 2011
Fund Project:
吉林省教育厅基金(200743)资助项目

Abstract: Under the protection of pure N₂,La-doped Bi₂Te₃ and Bi_0.5Sb_1.5Te₃ were prepared by the method of electromagnetic induction.The structures and morphologies of the samples were characterized using X-ray diffraction,inductively coupled plasma and scanning electron microscopy.The electricity conductivity(σ),Seebeck coefficient(S) and thermal conductivity(κ) were studied.The results showed that La-doped samples have lower thermal conductivity and enhanced figure of merit(ZT).The thermoelectric figure of merit of La-doped Bi_0.5Sb_1.5Te₃ were improved up to 1 at room temperature.

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

添加La的Bi₂Te₃和Bi_0.5Sb_1.5Te₃热电材料的电磁感应熔炼法制备及其热电性能

通讯作者: 李云辉,教授;Tel:0431-85582361;Fax:0431-86804621;E-mail:liyh@cust.edu.cn;研究方向:光电功能材料

English

Synthesis of La-Doped Bi₂Te₃ and Bi_0.5Sb_1.5Te₃ via the Electromagnetic Induction Method and Their Thermoelectric Properties

Corresponding author: 李云辉,教授;Tel:0431-85582361;Fax:0431-86804621;E-mail:liyh@cust.edu.cn;研究方向:光电功能材料

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