Zn/MnO 2 Battery Chemistry With H + and Zn 2+ Coinsertion
University of Maryland, College Park · South China University of Technology
Abstract
Rechargeable aqueous Zn/MnO2 battery chemistry in a neutral or mildly acidic electrolyte has attracted extensive attention recently because all the components (anode, cathode, and electrolyte) in a Zn/MnO2 battery are safe, abundant, and sustainable. However, the reaction mechanism of the MnO2 cathode remains a topic of discussion. Herein, we design a highly reversible aqueous Zn/MnO2 battery where the binder-free MnO2 cathode was fabricated by in situ electrodeposition of MnO2 on carbon fiber paper in mild acidic ZnSO4+MnSO4 electrolyte. Electrochemical and structural analysis identify that the MnO2 cathode experience a consequent H+ and Zn2+ insertion/extraction process with high reversibility and cycling…
Citation impact
- FWCI
- 72.92
- Percentile
- 100%
- References
- 28
Authors
11Topics & keywords
- Chemistry
- Cathode
- Electrochemistry
- Battery (electricity)
- Electrolyte
- Anode
- Aqueous solution
- Inorganic chemistry