Unlocking the Critical Role of Cations Doping in MnO 2 Cathode with Enhanced Reaction Kinetics for Aqueous Zinc Ion Batteries
Northeastern University · Sichuan University
Abstract
Abstract MnO 2 ‐based cathode aqueous rechargeable zinc‐ion batteries (ZIBs) have favorable sustainability characteristics and are considered potential candidates for low‐cost effective, high‐safety energy storage systems. Nevertheless, the development of them has been hampered by unstable electrode structures and ambiguous charge storage mechanisms. Herein, the role of doping Fe 3+ and Co 2+ into δ‐MnO 2 cathode materials (FMO, CMO) is comprehensively probed and the working mechanism of Zn//FMO, Zn//CMO batteries are studied using in situ and ex situ characterization, electrochemical analysis, and theoretical calculations. Metal cations can partially replace Mn to form M─O bonds and enhance the structural…
Citation impact
- FWCI
- 32.96
- Percentile
- 100%
- References
- 64
Authors
10Topics & keywords
- Materials science
- Cathode
- Aqueous solution
- Kinetics
- Doping
- Ion
- Zinc
- Inorganic chemistry