Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (6): 2144-2155.doi: 10.19799/j.cnki.2095-4239.2021.0228

• New Energy Storage Technologies • Previous Articles     Next Articles

Advances of aqueous batteries with non-metallic cation charge carriers

Shiying ZHAN1(), Dongxu YU2, Nan CHEN2, Fei DU2()   

  1. 1.Yinlong Energy Co. Ltd, Zhuhai 519000, Guangdong, China
    2.Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, Jilin, China
  • Received:2021-05-25 Revised:2021-05-28 Online:2021-11-05 Published:2021-11-03

Abstract:

Aqueous batteries have attracted interest due to their environmental friendliness, safety, and low cost. The charge carrier is an important component of rechargeable batteries, affecting the reaction mechanism and performance. Non-metallic cations such as NH4+, H+, H3O+ have received little attention in comparison to aqueous batteries that use metal-ion charge carriers. Compared with metal-ion charge carriers, non-metallic cations with smaller ionic radius and lower molar mass, showing higher ion diffusion rate, long cycling life, and low manufacturing costs. However, developing suitable cathode electrode materials for the insertion of non-metal charge carriers remains a challenge. In this section, we reviewed and investigated recent references in the field. First, we introduced and compared the differences between metal charge carriers and non-metal charge carriers; second, we summarized the most recent advances in the exploration and development of cathode materials for aqueous batteries with non-metallic charge carriers. The new proposed battery chemistry and reaction mechanism will be highlighted and introduced. To summarize, we proposed that optimizing the structure of electrolytes and expanding the voltage range of electrolytes could significantly improve the electrochemical performance of aqueous non-metallic batteries.

Key words: non-metallic cations, aqueous batteries, electrode materials, electrochemistry, structure optimization

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