Citation: Lu Xiaofang, Zheng Qi, Gu Shijia, Guo Rui, Su Li, Wang Jiancheng, Zhou Zhenxing, Fan Yuchi, Jiang Wan, Wang Lianjun. Enhanced TE properties of Cu@Ag/Bi₂Te₃ nanocomposites by decoupling electrical and thermal properties[J]. Chinese Chemical Letters, ;2020, 31(3): 880-884. doi: 10.1016/j.cclet.2019.07.034 shu

Enhanced TE properties of Cu@Ag/Bi₂Te₃ nanocomposites by decoupling electrical and thermal properties

Lu Xiaofang ^a ,
Zheng Qi ^a,*, ,
Gu Shijia ^b ,
Guo Rui ^a ,
Su Li ^a ,
Wang Jiancheng ^a ,
Zhou Zhenxing ^a ,
Fan Yuchi ^b ,
Jiang Wan ^a,b,c ,
Wang Lianjun ^a,d,*,

a.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
b.
Institute of Functional Materials, Donghua University, Shanghai 201620, China
c.
School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jindezhen 333000, China
d.
Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Shanghai 201620, China

qi.zheng@dhu.edu.cn

wanglj@dhu.edu.cn

Received Date: 6 June 2019
Revised Date: 26 June 2019
Accepted Date: 16 July 2019
Available Online: 16 July 2019

Figures(4)

Cu@Ag/Bi₂Te₃ nanocomposites were prepared for the first time by ultrasonic dispersion-rapid freezedrying method combined with spark plasma sintering (SPS). By changing the content of Cu@Ag nanoparticle, we could modulate the temperature dependent thermoelectric properties. The highest ZT value can be obtained at 450 K for 1 vol% Cu@Ag/Bi₂Te₃, which is benefited from the decoupling of electrical and thermal properties. With the increase of electrical conductivity, the absolute value of Seebeck coefficient lifts while the thermal conductivity declines. Meanwhile, the average ZT value between 300 K and 475 K was 0.61 for 1 vol% Cu@Ag/Bi₂Te₃, which is much higher than that of pristine Bi₂Te₃. Therefore, the decoupling effect of Cu@Ag nanoparticles incorporation could be a promising method to broaden the application of Bi₂Te₃ based thermoelectric materials.
- Cu@Ag,
- Thermoelectric,
- Bi₂Te₃,
- ZT,
- Decoupling effect
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Enhanced TE properties of Cu@Ag/Bi2Te3 nanocomposites by decoupling electrical and thermal properties

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通讯作者: 陈斌, bchen63@163.com

Enhanced TE properties of Cu@Ag/Bi₂Te₃ nanocomposites by decoupling electrical and thermal properties