Facile synthesis of Cu7Te4 nanorods and the enhanced thermoelectric properties of Cu7Te4-Bi0.4Sb1.6Te3 nanocomposites

Li Ping Tan; Ting Sun; Shufen Fan; Lay Yong Ng; Ady Suwardi; Qingyu Yan; Huey Hoon Hng

doi:10.1016/j.nanoen.2012.07.004

Facile synthesis of Cu₇Te₄ nanorods and the enhanced thermoelectric properties of Cu₇Te₄-Bi_0.4Sb_1.6Te₃ nanocomposites

Li Ping Tan, Ting Sun, Shufen Fan, Lay Yong Ng, Ady Suwardi, Qingyu Yan, Huey Hoon Hng^*

^*Corresponding author for this work

Nanyang Technological University

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

35 Citations (Scopus)

Abstract

Nanocomposite thermoelectric (TE) materials have received great interest in recent years due to the large improvement in the figure of merit (ZT), which exceed the ZT≈1 barrier. Herein, we report a facile method for the synthesis of surfactant-free Cu₇Te₄ using Te nanorods as templates, and the observed improvement of TE properties obtained by dispersing Cu₇Te₄ nanorods in a Bi_0.4Sb_1.6Te₃ matrix. The matrix itself yields a maximum power factor of 2.45mW/mK² at 300K, while the addition of 5wt% of Cu₇Te₄ nanorods increases and shifts the maximum power factor to 3.3mW/mK² at 345K. The maximum ZT obtained for the 5wt% Cu₇Te₄-Bi_0.4Sb_1.6Te₃ nanocomposite is 1.14 at 444K, which is nearly 27% higher than the peak ZT achieved for the Bi_0.4Sb_1.6Te₃ matrix.

Original language	English
Pages (from-to)	4-11
Number of pages	8
Journal	Nano Energy
Volume	2
Issue number	1
DOIs	https://doi.org/10.1016/j.nanoen.2012.07.004
Publication status	Published - Jan 2013
Externally published	Yes

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

Keywords

Chalcogenides
Composite materials
Nanostructures
Thermoelectric materials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2012.07.004

Cite this

@article{e411ced6976d4fdf814093b05d681222,

title = "Facile synthesis of Cu7Te4 nanorods and the enhanced thermoelectric properties of Cu7Te4-Bi0.4Sb1.6Te3 nanocomposites",

abstract = "Nanocomposite thermoelectric (TE) materials have received great interest in recent years due to the large improvement in the figure of merit (ZT), which exceed the ZT≈1 barrier. Herein, we report a facile method for the synthesis of surfactant-free Cu7Te4 using Te nanorods as templates, and the observed improvement of TE properties obtained by dispersing Cu7Te4 nanorods in a Bi0.4Sb1.6Te3 matrix. The matrix itself yields a maximum power factor of 2.45mW/mK2 at 300K, while the addition of 5wt% of Cu7Te4 nanorods increases and shifts the maximum power factor to 3.3mW/mK2 at 345K. The maximum ZT obtained for the 5wt% Cu7Te4-Bi0.4Sb1.6Te3 nanocomposite is 1.14 at 444K, which is nearly 27% higher than the peak ZT achieved for the Bi0.4Sb1.6Te3 matrix.",

keywords = "Chalcogenides, Composite materials, Nanostructures, Thermoelectric materials",

author = "Tan, {Li Ping} and Ting Sun and Shufen Fan and Ng, {Lay Yong} and Ady Suwardi and Qingyu Yan and Hng, {Huey Hoon}",

year = "2013",

month = jan,

doi = "10.1016/j.nanoen.2012.07.004",

language = "English",

volume = "2",

pages = "4--11",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - Facile synthesis of Cu7Te4 nanorods and the enhanced thermoelectric properties of Cu7Te4-Bi0.4Sb1.6Te3 nanocomposites

AU - Tan, Li Ping

AU - Sun, Ting

AU - Fan, Shufen

AU - Ng, Lay Yong

AU - Suwardi, Ady

AU - Yan, Qingyu

AU - Hng, Huey Hoon

PY - 2013/1

Y1 - 2013/1

N2 - Nanocomposite thermoelectric (TE) materials have received great interest in recent years due to the large improvement in the figure of merit (ZT), which exceed the ZT≈1 barrier. Herein, we report a facile method for the synthesis of surfactant-free Cu7Te4 using Te nanorods as templates, and the observed improvement of TE properties obtained by dispersing Cu7Te4 nanorods in a Bi0.4Sb1.6Te3 matrix. The matrix itself yields a maximum power factor of 2.45mW/mK2 at 300K, while the addition of 5wt% of Cu7Te4 nanorods increases and shifts the maximum power factor to 3.3mW/mK2 at 345K. The maximum ZT obtained for the 5wt% Cu7Te4-Bi0.4Sb1.6Te3 nanocomposite is 1.14 at 444K, which is nearly 27% higher than the peak ZT achieved for the Bi0.4Sb1.6Te3 matrix.

AB - Nanocomposite thermoelectric (TE) materials have received great interest in recent years due to the large improvement in the figure of merit (ZT), which exceed the ZT≈1 barrier. Herein, we report a facile method for the synthesis of surfactant-free Cu7Te4 using Te nanorods as templates, and the observed improvement of TE properties obtained by dispersing Cu7Te4 nanorods in a Bi0.4Sb1.6Te3 matrix. The matrix itself yields a maximum power factor of 2.45mW/mK2 at 300K, while the addition of 5wt% of Cu7Te4 nanorods increases and shifts the maximum power factor to 3.3mW/mK2 at 345K. The maximum ZT obtained for the 5wt% Cu7Te4-Bi0.4Sb1.6Te3 nanocomposite is 1.14 at 444K, which is nearly 27% higher than the peak ZT achieved for the Bi0.4Sb1.6Te3 matrix.

KW - Chalcogenides

KW - Composite materials

KW - Nanostructures

KW - Thermoelectric materials

UR - http://www.scopus.com/inward/record.url?scp=84872264135&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872264135&partnerID=8YFLogxK

U2 - 10.1016/j.nanoen.2012.07.004

DO - 10.1016/j.nanoen.2012.07.004

M3 - Article

AN - SCOPUS:84872264135

SN - 2211-2855

VL - 2

SP - 4

EP - 11

JO - Nano Energy

JF - Nano Energy

IS - 1

ER -