Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials
Abstract 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 se...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201901598 |
| _version_ | 1811344785277976576 |
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| author | Tao Mao Pengfei Qiu Ping Hu Xiaolong Du Kunpeng Zhao Tian‐Ran Wei Jie Xiao Xun Shi Lidong Chen |
| author_facet | Tao Mao Pengfei Qiu Ping Hu Xiaolong Du Kunpeng Zhao Tian‐Ran Wei Jie Xiao Xun Shi Lidong Chen |
| author_sort | Tao Mao |
| collection | DOAJ |
| description | Abstract 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−δS 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−δS‐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. |
| first_indexed | 2024-04-13T19:52:22Z |
| format | Article |
| id | doaj.art-f00629441766462894d6a4e4de4888f5 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-13T19:52:22Z |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-f00629441766462894d6a4e4de4888f52022-12-22T02:32:28ZengWileyAdvanced Science2198-38442020-01-0171n/an/a10.1002/advs.201901598Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric MaterialsTao Mao0Pengfei Qiu1Ping Hu2Xiaolong Du3Kunpeng Zhao4Tian‐Ran Wei5Jie Xiao6Xun Shi7Lidong Chen8State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 ChinaState Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaAbstract 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−δS 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−δS‐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.https://doi.org/10.1002/advs.201901598Cu2Sliquid‐like materialsservice stabilitythermoelectric |
| spellingShingle | Tao Mao Pengfei Qiu Ping Hu Xiaolong Du Kunpeng Zhao Tian‐Ran Wei Jie Xiao Xun Shi Lidong Chen Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials Advanced Science Cu2S liquid‐like materials service stability thermoelectric |
| title | Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials |
| title_full | Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials |
| title_fullStr | Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials |
| title_full_unstemmed | Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials |
| title_short | Decoupling Thermoelectric Performance and Stability in Liquid‐Like Thermoelectric Materials |
| title_sort | decoupling thermoelectric performance and stability in liquid like thermoelectric materials |
| topic | Cu2S liquid‐like materials service stability thermoelectric |
| url | https://doi.org/10.1002/advs.201901598 |
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