Hydrothermal method for the synthesis of Sb2Te3, and Bi0.5Sb1.5Te3 nanoplates and their thermoelectric properties

被引：14
|
作者：
Dharmaiah, Peyala [1 ]
Hong, Soon-Jik [1 ]
机构：
[1] Kongju Natl Univ, Div Adv Mat Engn, Cheonan, Chungcheongnam, South Korea
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2018年 / 15卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Antimony telluride; grain boundaries; hydrothermal synthesis; spark plasma sintering; thermoelectric materials; PERFORMANCE;
D O I：
10.1111/ijac.12762
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, a modified hydrothermal method is reported for the preparation of Sb2Te3 and Bi0.5Sb1.5Te3 nanoplates and their bulk samples was prepared by spark plasma sintering (SPS). The crystal structure, morphology, and thermoelectric properties were investigated. The microstructure results indicate that the bulk samples consisted nanograins after SPS. The presence of nanograins, high Seebeck coefficient (181 V/K), high electrical conductivity (763 (-1) cm(-1)), and low thermal conductivity (1.15 W/mK) has been achieved in Sb2Te3 nanoplate bulk samples. As a result, the dimensionless thermoelectric figure of merit (ZT) of 0.55 at 400 K was achieved. Moreover, the peak ZT shifted to higher temperature compared with other reported results found in literature.
引用
收藏
页码：132 / 139
页数：8
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