Affiliation:
1. Key Laboratory of Automobile Materials MOE and School of Materials Science & Engineering and Electron Microscopy Center and International Center of Future Science and Jilin Provincial International Cooperation Key Laboratory of High Efficiency Clean Energy Materials Jilin University Changchun Jilin 130012 China
2. Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
Abstract
AbstractIn 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.
Funder
National Natural Science Foundation of China
Cited by
6 articles.
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