RETRACTED: Proton transport enabled by a field-induced metallic state in a semiconductor heterostructure.

Wu, Y; Zhu, B; Huang, M; Liu, L; Shi, Q; Akbar, M; Chen, C; Wei, J; Li, J F; Zheng, L R; Kim, J S; Song, H B

Wu, Y; Zhu, B; Huang, M; Liu, L; Shi, Q; Akbar, M; Chen, C; Wei, J; Li, J F; Zheng, L R; Kim, J S; Song, H B.

Afiliación

Wu Y; Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
Zhu B; Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China. binzhu@kth.se songhb@cug.edu.cn.
Huang M; Energy Storage Joint Research Center, Southeast University School of Energy and Environment, Southeast University, Nanjing, 210096, China.
Liu L; Key Laboratory of Ferro and Piezoelectric Materials and Devices of Hubei Province, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China.
Shi Q; Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
Akbar M; Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
Chen C; Key Laboratory of Ferro and Piezoelectric Materials and Devices of Hubei Province, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China.
Wei J; Huazhong University of Science and Technology, Wuhan, 430074, China.
Li JF; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Zheng LR; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Kim JS; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
Song HB; Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough LE11 3TU, UK.

Science ; 369(6500): 184-188, 2020 07 10.

Article en En | MEDLINE | ID: mdl-32646999

RESUMEN

Tuning a semiconductor to function as a fast proton conductor is an emerging strategy in the rapidly developing field of proton ceramic fuel cells (PCFCs). The key challenge for PCFC researchers is to formulate the proton-conducting electrolyte with conductivity above 0.1 siemens per centimeter at low temperatures (300 to 600°C). Here we present a methodology to design an enhanced proton conductor by means of a Na x CoO2/CeO2 semiconductor heterostructure, in which a field-induced metallic state at the interface accelerates proton transport. We developed a PCFC with an ionic conductivity of 0.30 siemens per centimeter and a power output of 1 watt per square centimeter at 520°C. Through our semiconductor heterostructure approach, our results provide insight into the proton transport mechanism, which may also improve ionic transport in other energy applications.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos

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