1. Oxygen Vacancies Boosted Hydronium Intercalation: A Paradigm Shift in Aluminum‐Based Batteries.
- Author
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Huang, Chengxiang, Jiang, Zhou, Liu, Fuxi, Li, Wenwen, Liang, Qing, Zhao, Zhenzhen, Ge, Xin, Song, Kexin, Zheng, Lirong, Zhou, Xinyan, Qiao, Sifan, Zhang, Wei, and Zheng, Weitao
- Subjects
EXTRACTION (Chemistry) ,DIFFUSION kinetics ,OXONIUM ions ,ALUMINUM batteries ,DIFFUSION barriers ,OXYGEN - Abstract
In aqueous aluminum‐ion batteries (AAIBs), the insertion/extraction chemistry of Al3+ often leads to poor kinetics, whereas the rapid diffusion kinetics of hydronium ions (H3O+) may offer the solution. However, the presence of considerable Al3+ in the electrolyte hinders the insertion reaction of H3O+. Herein, we report how oxygen‐deficient α‐MoO3 nanosheets unlock selective H3O+ insertion in a mild aluminum‐ion electrolyte. The abundant oxygen defects impede the insertion of Al3+ due to excessively strong adsorption, while allowing H3O+ to be inserted/diffused through the Grotthuss proton conduction mechanism. This research advances our understanding of the mechanism behind selective H3O+ insertion in mild electrolytes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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