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- Title
Oxygen Vacancy-Rich δ-MnO 2 Cathode Materials for Highly Stable Zinc-Ion Batteries.
- Authors
Li, Shilong; Wu, Xiang
- Abstract
As an emerging secondary battery system, aqueous zinc-ion batteries (AZIBs) show a broad application prospect in the fields of large-scale energy storage and wearable devices. Manganese-based cathode materials have been widely investigated by many researchers due to their high natural abundance, low toxicity, and multiple variable valence states. However, limited active sites, insufficient solvation, and reactivity kinetics of Mn2+ lead to the attenuation of their electrochemical performance. Herein, we introduce appropriate oxygen vacancies into the δ-MnO2 structure by modulating the annealing temperature. The obtained δ-MnO2-400 electrode provided 503 mAh/g capacity at 0.2 A/g and 99% capacity retention after 3000 times cycling at 1 A/g.
- Subjects
STORAGE batteries; ENERGY storage; RESEARCH personnel; CATHODES; SOLVATION
- Publication
Batteries, 2024, Vol 10, Issue 8, p294
- ISSN
2313-0105
- Publication type
Article
- DOI
10.3390/batteries10080294