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Progress of Organic Electrodes in Aqueous Electrolyte for Energy Storage and Conversion
Author(s) -
Huang Jianhang,
Dong Xiaoli,
Guo Zhaowei,
Wang Yonggang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202003198
Subject(s) - electrolyte , energy storage , electrolysis , aqueous solution , electrode , redox , electrolysis of water , bulk electrolysis , electrochemistry , chemistry , chemical engineering , materials science , nanotechnology , inorganic chemistry , organic chemistry , quantum mechanics , power (physics) , physics , engineering
Aqueous batteries using inorganic compounds as electrode materials are considered a promising solution for grid‐scale energy storage, while wide application is limited by the short life and/or high cost of electrodes. Organics with carbonyl groups are being investigated as the alternative to inorganic electrode materials because they offer the advantages of tunable structures, renewability, and they are environmentally benign. Furthermore, the wide internal space of such organic materials enables flexible storage of various charged ions (for example, H + , Li + , Na + , K + , Zn 2+ , Mg 2+ , and Ca 2+ , and so on). We offer a comprehensive overview of the progress of organics containing carbonyls for energy storage and conversion in aqueous electrolytes, including applications in aqueous batteries as solid‐state electrodes, in flow batteries as soluble redox species, and in water electrolysis as redox buffer electrodes. The advantages of organic electrodes are summarized, with a discussion of the challenges remaining for their practical application.