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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
2019-12-31
Source PublicationADVANCED SCIENCE
SubtypeArticle; Early Access
AbstractLiquid-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.
KeywordCu2S liquid-like materials service stability thermoelectric
DOI10.1002/advs.201901598
WOS KeywordTRANSPORT-PROPERTIES ; CHEMICAL-STABILITY ; CONDUCTIVITY ; ENERGY ; IONS
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
PublisherWILEY
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27522
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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).
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