Next Article in Journal
Effect of Diazotated Sulphonated Polystyrene Films on the Calcium Oxalate Crystallization
Next Article in Special Issue
Synthesis and Thermoelectric Properties of Copper Sulfides via Solution Phase Methods and Spark Plasma Sintering
Previous Article in Journal
Structures, Photophysical Properties, and Growth Patterns of Methylurea Coordinated Ni(II) and Mn(II) Complexes
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Crystals 2017, 7(3), 71; doi:10.3390/cryst7030071

Enhanced Thermoelectric Properties of Graphene/Cu2SnSe3 Composites

School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
*
Author to whom correspondence should be addressed.
Academic Editor: George S. Nolas
Received: 28 January 2017 / Revised: 26 February 2017 / Accepted: 27 February 2017 / Published: 28 February 2017
(This article belongs to the Special Issue Materials Processing and Crystal Growth for Thermoelectrics)
View Full-Text   |   Download PDF [8604 KB, uploaded 28 February 2017]   |  

Abstract

Cu2SnSe3 material is regarded as a potential thermoelectric material due to its relatively high carrier mobility and low thermal conductivity. In this study, graphene was introduced into the Cu2SnSe3 powder by ball milling, and the bulk graphene/Cu2SnSe3 thermoelectric composites were prepared by spark plasma sintering. The graphene nanosheets distributed uniformly in the Cu2SnSe3 matrix. Meanwhile, some graphene nanosheets tended to form thick aggregations, and the average length of these aggregations was about 3 μm. With the fraction of graphene increasing, the electrical conductivity of graphene/Cu2SnSe3 samples increased greatly while the Seebeck coefficient was decreased. The introduction of graphene nanosheets can reduce the thermal conductivity effectively resulting from the phonon scattering by the graphene interface. When the content of graphene exceeds a certain value, the thermal conductivity of graphene/Cu2SnSe3 composites starts to increase. The achieved highest figure of merit (ZT) for 0.25 vol % graphene/Cu2SnSe3 composite was 0.44 at 700 K. View Full-Text
Keywords: thermoelectric; composites; ternary diamond-like semiconductor; graphene thermoelectric; composites; ternary diamond-like semiconductor; graphene
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhao, D.; Wang, X.; Wu, D. Enhanced Thermoelectric Properties of Graphene/Cu2SnSe3 Composites. Crystals 2017, 7, 71.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top