Suppressing Manganese Dissolution in Potassium Manganate with Rich Oxygen Defects Engaged High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery
Central South University · University of Science and Technology of China · +1 more institution
Abstract
Abstract The manganese dissolution leading to sharp capacity decline as well as the sluggish reaction kinetic are still major issues for manganese‐based materials as aqueous zinc‐ion batteries (ZIBs) cathodes. Here, a potassium‐ion‐stabilized and oxygen‐defect K 0.8 Mn 8 O 16 is reported as a high‐energy‐density and durable cathode for neutral aqueous ZIBs. A new insight into suppressing manganese dissolution via incorporation of K + ions to intrinsically stabilize the Mn‐based cathodes is provided. A comprehensive study suggests that oxygen defects improve electrical conductivity and open the MnO 6 polyhedron walls for ion diffusion, which plays a critical role in the fast reaction kinetics and capacity…
Citation impact
- FWCI
- 55.45
- Percentile
- 100%
- References
- 50
Authors
9Topics & keywords
- Manganese
- Dissolution
- Materials science
- Cathode
- Aqueous solution
- Battery (electricity)
- Inorganic chemistry
- Chemical engineering