期刊
CARBON
卷 94, 期 -, 页码 417-423出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2015.06.037
关键词
-
资金
- Program for New Century Excellent Talents in University, Ministry of Education of China [NCET-11-0043]
- Fundamental Research Funds for the Central Universities of China
Electrical and thermal switchable materials are of interest in temperature regulation, circuit protection, sensors and other field. In this paper, functionalized carbon black (CB)/octadecane composites were synthesized for room temperature electrical and thermal switch. With these composites, large contrast ratios of electrical conductivity (EC) and thermal conductivity (TC) are achieved around the phase transition temperature (28-29 degrees C). The corresponding contrast ratios of EC and TC reach 4.3 x 10(5) and 3.3 times, respectively. The composites show remarkable stability and durability during the cycling experiments. The mechanisms of good stability and high EC contrast ratio are discussed as well. (C) 2015 Elsevier Ltd. All rights reserved.
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