Cu1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance

Bangzhi Ge; Jiabin Hu; Qiong Wang; Hongyan Xia; Shunjian Xu; Zhongqi Shi

doi:10.1080/10667857.2019.1699271

Cu_1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance

Bangzhi Ge
, Jiabin Hu
, Qiong Wang
, Hongyan Xia
, Shunjian Xu
, Zhongqi Shi

School of Materials Science and Engineering

Xinyu University
State Key Laboratory for Mechanical Behavior of Materials
Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The thermoelectric (TE) technology can harvest the waste heat to generate electrical energy. However, TE parameters decoupling is a big challenge to optimise the performance. Herein, we fabricated the Cu_1.75Te nanowires (NWs) based bulk materials by spark plasma sintering of the solvothermal synthesised Cu_1.75Te NWs towards decouple the thermal and electric performances. The results indicate that the ultrathin Cu_1.75Te NWs with the diameter of ~10 nm can be synthesised, which serve as building blocks for fabricating bulk TE materials with nanonetwork structure inside the bulk. This unique nanonetwork structure plays a vital role in decoupling TE parameters. Its peak zT reaches 0.09, higher than the counterparts of reported Cu₂Te bulk and Cu_1.75Te nanosheets based bulk. Thus, building Cu_1.75Te NWs based bulk materials is thought to be an effective way to decouple the TE parameters.

Original language	English
Pages (from-to)	529-533
Number of pages	5
Journal	Materials Technology
Volume	35
Issue number	9-10
DOIs	https://doi.org/10.1080/10667857.2019.1699271
State	Published - 23 Aug 2020

Keywords

CuTe
Thermoelectric
figure of merit
nanonetwork
nanowires

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10.1080/10667857.2019.1699271

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@article{023314793e8d4af19dfc4ef071a217a7,

title = "Cu1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance",

abstract = "The thermoelectric (TE) technology can harvest the waste heat to generate electrical energy. However, TE parameters decoupling is a big challenge to optimise the performance. Herein, we fabricated the Cu1.75Te nanowires (NWs) based bulk materials by spark plasma sintering of the solvothermal synthesised Cu1.75Te NWs towards decouple the thermal and electric performances. The results indicate that the ultrathin Cu1.75Te NWs with the diameter of \textasciitilde{}10 nm can be synthesised, which serve as building blocks for fabricating bulk TE materials with nanonetwork structure inside the bulk. This unique nanonetwork structure plays a vital role in decoupling TE parameters. Its peak zT reaches 0.09, higher than the counterparts of reported Cu2Te bulk and Cu1.75Te nanosheets based bulk. Thus, building Cu1.75Te NWs based bulk materials is thought to be an effective way to decouple the TE parameters.",

keywords = "CuTe, Thermoelectric, figure of merit, nanonetwork, nanowires",

author = "Bangzhi Ge and Jiabin Hu and Qiong Wang and Hongyan Xia and Shunjian Xu and Zhongqi Shi",

note = "Publisher Copyright: {\textcopyright} 2019 Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2020",

month = aug,

day = "23",

doi = "10.1080/10667857.2019.1699271",

language = "英语",

volume = "35",

pages = "529--533",

journal = "Materials Technology",

issn = "1066-7857",

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TY - JOUR

T1 - Cu1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance

AU - Ge, Bangzhi

AU - Hu, Jiabin

AU - Wang, Qiong

AU - Xia, Hongyan

AU - Xu, Shunjian

AU - Shi, Zhongqi

PY - 2020/8/23

Y1 - 2020/8/23

N2 - The thermoelectric (TE) technology can harvest the waste heat to generate electrical energy. However, TE parameters decoupling is a big challenge to optimise the performance. Herein, we fabricated the Cu1.75Te nanowires (NWs) based bulk materials by spark plasma sintering of the solvothermal synthesised Cu1.75Te NWs towards decouple the thermal and electric performances. The results indicate that the ultrathin Cu1.75Te NWs with the diameter of ~10 nm can be synthesised, which serve as building blocks for fabricating bulk TE materials with nanonetwork structure inside the bulk. This unique nanonetwork structure plays a vital role in decoupling TE parameters. Its peak zT reaches 0.09, higher than the counterparts of reported Cu2Te bulk and Cu1.75Te nanosheets based bulk. Thus, building Cu1.75Te NWs based bulk materials is thought to be an effective way to decouple the TE parameters.

AB - The thermoelectric (TE) technology can harvest the waste heat to generate electrical energy. However, TE parameters decoupling is a big challenge to optimise the performance. Herein, we fabricated the Cu1.75Te nanowires (NWs) based bulk materials by spark plasma sintering of the solvothermal synthesised Cu1.75Te NWs towards decouple the thermal and electric performances. The results indicate that the ultrathin Cu1.75Te NWs with the diameter of ~10 nm can be synthesised, which serve as building blocks for fabricating bulk TE materials with nanonetwork structure inside the bulk. This unique nanonetwork structure plays a vital role in decoupling TE parameters. Its peak zT reaches 0.09, higher than the counterparts of reported Cu2Te bulk and Cu1.75Te nanosheets based bulk. Thus, building Cu1.75Te NWs based bulk materials is thought to be an effective way to decouple the TE parameters.

KW - CuTe

KW - Thermoelectric

KW - figure of merit

KW - nanonetwork

KW - nanowires

UR - https://www.scopus.com/pages/publications/85076430432

U2 - 10.1080/10667857.2019.1699271

DO - 10.1080/10667857.2019.1699271

M3 - 文章

AN - SCOPUS:85076430432

SN - 1066-7857

VL - 35

SP - 529

EP - 533

JO - Materials Technology

JF - Materials Technology

IS - 9-10

ER -

Cu_1.75Te nanowires as building blocks to fabricate bulk materials with enhanced thermoelectric performance

Abstract

Keywords

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