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Good stability and high thermoelectric performance of Fe doped Cu1.80S
Mao, T; Qiu, PF; Liu, J; Du, XL; Hu, P; Zhao, KP; Ren, DD; Shi, X; Chen, LF
2020-04-14
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
Issue14Pages:7374
SubtypeArticle
AbstractCopper sulfides have attracted great attention recently in the thermoelectric community due to the liquid-like behavior of Cu ions. Among the numerous copper sulfides, digenite Cu1.80S has a poorer thermoelectric performance but better stability than the state-of-the-art binary copper sulfide Cu1.97S. In this study, good stability and high thermoelectric performance were simultaneously obtained in Fe-doped Cu1.80S. Because Fe ions will not form a concentration gradient under an external field to change the critical voltage, Fe-doped Cu1.80S samples inherit the good stability of the pristine Cu1.80S. The critical voltage for Cu1.80Fe0.064S is 0.16 V at 750 K, which has been the largest value reported so far. Likewise, the Fe dopants can significantly improve the thermoelectric performance by suppressing the too high electrical conductivity of Cu1.80S. The peak dimensionless figure of merit (zT) for Cu1.80Fe0.064S is around 0.8 at 750 K, about four times that of Cu1.80S. The average zT for Cu1.80Fe0.064S is 0.40 in 300-750 K, which is amongst the highest values in reported thermoelectric sulfides. Combining the good stability and high thermoelectric performance, the present Cu1.80Fe0.064S has great potential to be used in the application of waste heat harvesting in the middle temperature range.
DOI10.1039/d0cp00733a
WOS KeywordEARTH-ABUNDANT ; THERMAL-CONDUCTIVITY ; COPPER SULFIDE ; CHEMICAL-STABILITY ; POWER-FACTOR ; FIGURE ; MERIT ; NETWORK
Language英语
WOS Research AreaChemistry ; Physics
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28146
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Mao, T,Qiu, PF,Liu, J,et al. Good stability and high thermoelectric performance of Fe doped Cu1.80S[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020(14):7374.
APA Mao, T.,Qiu, PF.,Liu, J.,Du, XL.,Hu, P.,...&Chen, LF.(2020).Good stability and high thermoelectric performance of Fe doped Cu1.80S.PHYSICAL CHEMISTRY CHEMICAL PHYSICS(14),7374.
MLA Mao, T,et al."Good stability and high thermoelectric performance of Fe doped Cu1.80S".PHYSICAL CHEMISTRY CHEMICAL PHYSICS .14(2020):7374.
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