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- Title
Surface Anion Effects in Aqueous Hydrogen Ion Batteries.
- Authors
Wang, Hao; Wu, Jialong; Zheng, Zhilong; Qin, Jiayi; Guo, Zhizhong; Zhang, Zhenyu; Wen, Wei
- Abstract
Aqueous hydrogen ion batteries possess the advantages of sustainability, low cost, and high safety, which makes them an ideal choice for grid-level energy storage. Although some anions show strong interaction with the surface of some metal oxides, the effect of anions on the cation intercalation behavior and electrochemical activity is rarely reported. Herein, we report that anions in the electrolyte can greatly affect the electrochemical performance of anatase TiO2 in aqueous hydrogen ion batteries. The adsorption strength between the anatase TiO2 (101) surface and the anions was found to follow the order of SO42− > Cl− > NO3−. Experiments with theoretical calculations revealed that SO42− can promote the electrochemical performance of the anatase TiO2 anode for aqueous hydrogen ion batteries, while NO3− hinders the hydronium intercalation. This work can provide a new avenue for the design of high-performance aqueous batteries.
- Subjects
HYDROGEN ions; GRID energy storage; ANIONS; STORAGE batteries; METALLIC oxides; FLUOROETHYLENE
- Publication
Journal of Electronic Materials, 2024, Vol 53, Issue 7, p3474
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-024-11112-x