Decoupling Thermoelectric Performance and Stability in Liquid-Like Thermoelectric Materials

doi:10.1002/advs.201901598

	Decoupling Thermoelectric Performance and Stability in Liquid-Like Thermoelectric Materials
	Mao, Tao; Qiu, Pengfei; Hu, Ping; Du, Xiaolong; Zhao, Kunpeng; Wei, Tian-Ran; Xiao, Jie; Shi, Xun; Chen, Lidong
刊名	ADVANCED SCIENCE
	2019-12-31
关键词	Cu2S liquid-like materials service stability thermoelectric
DOI	10.1002/advs.201901598
文献子类	Article; Early Access
英文摘要	Liquid-like materials are one family of promising thermoelectric materials discovered in the past years due to their advantanges of ultrahigh thermoelectric figure of merit (zT), low cost, and environmental friendliness. However, their practial applications are greatly limited by the low service stability from the Cu/Ag metal deposition under large current and/or temperature gradient. Both high zT for high efficiency and large critical voltage for good stability are required for liquid-like materials, but they are usually strongly correlated and hard to be tuned individually. Herein, based on the thermodynamic analysis, it is shown that such a correlation can be decoupled through doping immobile ions into the liquid-like sublattice. Taking Cu2-delta S as an example, doping immobile Fe ions in Cu1.90S scarcely degrades the initial large critical voltage, but significantly enhances the zT to 1.5 at 1000 K by tuning the carrier concentration to the optimal range. Combining the low-cost and environmentally friendly features, these Fe-doped Cu2-delta S-based compounds show great potential in civil applications. This study sheds light on the realization of both good stability and high performance for many other liquid-like thermoelectric materials that have not been considered for real applications before.
WOS关键词	TRANSPORT-PROPERTIES ; CHEMICAL-STABILITY ; CONDUCTIVITY ; ENERGY ; IONS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	WILEY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27522]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Mao, Tao,Qiu, Pengfei,Hu, Ping,et al. Decoupling Thermoelectric Performance and Stability in Liquid-Like Thermoelectric Materials[J]. ADVANCED SCIENCE,2019.
APA	Mao, Tao.,Qiu, Pengfei.,Hu, Ping.,Du, Xiaolong.,Zhao, Kunpeng.,...&Chen, Lidong.(2019).Decoupling Thermoelectric Performance and Stability in Liquid-Like Thermoelectric Materials.ADVANCED SCIENCE.
MLA	Mao, Tao,et al."Decoupling Thermoelectric Performance and Stability in Liquid-Like Thermoelectric Materials".ADVANCED SCIENCE (2019).