Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (6): 1998-2007.doi: 10.19799/j.cnki.2095-4239.2021.0326

• Special issue of hydrogen energy and fuel cell • Previous Articles     Next Articles

Utilization and synthesis of ammonia in proton-conducting solid oxide electrochemical devices

Wenchao LIAN1(), Libin LEI1(), Bo LIANG1, Chao WANG1, Lei WEI1, Zhipeng TIAN1, Jianping LIU1, Huazheng YANG2, Jiajian LIANG2, Tao SHI3   

  1. 1.School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
    2.Foshan ISOFC Dynamic Co. Ltd. , Foshan 528000, Guangdong, China
    3.Foshan Panye Hydrogen Energy Technology Co. Ltd. , Foshan 528216, Guangdong, China
  • Received:2021-07-08 Revised:2021-07-22 Online:2021-11-05 Published:2021-11-03
  • Contact: Libin LEI E-mail:931830289@qq.com;libinlei23@gdut.edu.cn

Abstract:

Ammonia is an ideal energy storage material and hydrogen energy carrier. Its utilization and synthesis in proton-conducting solid oxide electrochemical devices can realize efficient and clean power generation and energy storage. In this paper, we review the advances in experimental and theoretical studies on the utilization and synthesis of ammonia in proton-conducting solid oxide electrochemical devices. In the aspect of experimental study, the development of electrolytes and ammonia electrode materials are comprehensively analyzed. While in the aspect of theoretical study, the research progress of thermodynamic-electrochemical models and density functional theory (DFT) are discussed emphatically. Since the proton conductivity of electrolyte materials and the catalytic activity of ammonia electrodes are the critical factors affecting the performance of electrochemical devices, the development of electrolyte materials with high proton conductivity and ammonia electrodes with high catalytic activity are still the main research topics. Thermodynamic-electrochemical models and DFT-based theoretical researches can provide guidance and ideas for the structural design of electrochemical device/optimization of operating conditions and development of ammonia electrode materials, respectively. However, theoretical studies of higher-level (three-dimensional) thermal-electrochemical models and the electrochemical activation mechanism of nitrogen on ammonia electrode materials still deserve further study. Finally, the future research directions of ammonia utilization and synthesis in electrochemical devices are also summarized.

Key words: solid oxide fuel cell, proton-conducting electrochemical reactor, ammonia, ammonia synthesis, ammonia electrode materials

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