Ultrahigh thermoelectric performance in Cu2Se-based hybrid materials with highly dispersed molecular CNTs

Raghavendra Nunna; Pengfei Qiu; Meijie Yin; Hongyi Chen; Riley Hanus; Qingfeng Song; Tiansong Zhang; Mei-Yin Chou; Matthias T. Agne; Jiaqing He; G. Jeffrey Snyder; Xun Shi; Lidong Chen

doi:10.1039/C7EE01737E

Ultrahigh thermoelectric performance in Cu₂Se-based hybrid materials with highly dispersed molecular CNTs†

Raghavendra Nunna,‡^a Pengfei Qiu,‡^a Meijie Yin,^b Hongyi Chen,^ac Riley Hanus,

^d Qingfeng Song,^ac Tiansong Zhang,^a Mei-Yin Chou,^e Matthias T. Agne,

^d Jiaqing He,^b G. Jeffrey Snyder,

*^d Xun Shi*^a and Lidong Chen*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China
E-mail: xshi@mail.sic.ac.cn, cld@mail.sic.ac.cn

^b Department of Physics, South University of Science and Technology of China, Shenzhen 518055, China

^c University of Chinese Academy of Sciences, Beijing 100049, China

^d Materials Science and Engineering, Northwestern University, Evanston IL 60208, USA
E-mail: jeff.snyder@northwestern.edu

^e Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan

Abstract

Here, by utilizing the special interaction between metal Cu and multi-walled carbon nanotubes (CNTs), we have successfully realized the in situ growth of Cu₂Se on the surface of CNTs and then fabricated a series of Cu₂Se/CNT hybrid materials. Due to the high degree of homogeneously dispersed molecular CNTs inside the Cu₂Se matrix, a record-high thermoelectric figure of merit zT of 2.4 at 1000 K has been achieved.

Energy & Environmental Science

Ultrahigh thermoelectric performance in Cu₂Se-based hybrid materials with highly dispersed molecular CNTs†

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Ultrahigh thermoelectric performance in Cu₂Se-based hybrid materials with highly dispersed molecular CNTs

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