Progress of Organic Electrodes in Aqueous Electrolyte for Energy Storage and Conversion |
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| Authors: | Dr. Jianhang Huang Dr. Xiaoli Dong Dr. Zhaowei Guo Prof. Dr. Yonggang Wang |
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| Affiliation: | 1. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433 China School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063 China;2. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433 China |
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| Abstract: | 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+, Zn2+, Mg2+, and Ca2+, 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. |
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| Keywords: | aqueous flow batteries aqueous metal-ion batteries aqueous proton batteries decoupled water electrolysis organic electrode materials |
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