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Aguilarite Ag4SSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity
Wang, Tuo; Zhao, Kunpeng; Qiu, Pengfei; Song, Qingfeng; Chen, Lidong; Shi, Xun
2019-04-03
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:13Pages:12632
SubtypeArticle
AbstractAg4SSe, named as aguilarite in mineralogy, belongs to the family of liquid-like superionic compounds at middle temperature, but its thermoelectric (TE) properties are rarely investigated so far. In this study, a series of Agdeficient Ag4SSe samples have been synthesized by the melting annealing method. Their crystal structures, phase transition features, and electrical and thermal transport properties have been systematically investigated. It is found that Ag4SSe allows a small amount of Ag deficiency inside the lattice without altering the initial crystal structure and phase transition feature. The stoichiometric Ag4SSe has a low TE figure of merit (zT) of 0.24 at 613 K because of the overhigh carrier concentration. Introducing Ag deficiency in Ag4SSe significantly lowers the carrier concentration, yielding a greatly enhanced Seebeck coefficient and suppressed carrier thermal conductivity throughout the entire measured temperature range. A maximum TE zT of 0.53 is achieved at 493 K for Ag3.96SSe, about two times that for the stoichiometric Ag4SSe. The present study suggests that aguilarite Ag4SSe is a promising TE material applied at the middle temperature range.
Keywordthermoelectric aguilarite liquid-like deficiency single parabolic band
DOI10.1021/acsami.8b22741
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27204
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wang, Tuo,Zhao, Kunpeng,Qiu, Pengfei,et al. Aguilarite Ag4SSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(13):12632.
APA Wang, Tuo,Zhao, Kunpeng,Qiu, Pengfei,Song, Qingfeng,Chen, Lidong,&Shi, Xun.(2019).Aguilarite Ag4SSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity.ACS APPLIED MATERIALS & INTERFACES,11(13),12632.
MLA Wang, Tuo,et al."Aguilarite Ag4SSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity".ACS APPLIED MATERIALS & INTERFACES 11.13(2019):12632.
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