Inhibiting the Jahn–Teller Effect of Manganese Hexacyanoferrate via Ni and Cu Codoping for Advanced Sodium‐Ion Batteries
University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale · +2 more institutions
Abstract
Abstract Manganese (Mn)‐based Prussian blue analogs (PBAs) are of great interest as a prospective cathode material for sodium‐ion batteries (SIBs) due to their high redox potential, easy synthesis, and low cost. However, the Jahn–Teller effect and low electrical conductivity of Mn‐based PBA cause poor structure stability and unsatisfactory performance during the cycling. Herein, a novel nickel‐ and copper‐codoped K 2 Mn[Fe(CN) 6 ] cathode is developed via a simple coprecipitation strategy. The doping elements improve the electrical conductivity of Mn‐based PBA by reducing the bandgap, as well as suppress the Jahn–Teller effect by stabilizing the framework, as verified by the density functional theory…
Citation impact
- FWCI
- 28.14
- Percentile
- 100%
- References
- 48
Authors
10- YLYifang Luo
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- JSJialong Shen
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- YYYu Yao
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- JDJunyi Dai
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- FLFangxin Ling
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
Topics & keywords
- Materials science
- Cathode
- Manganese
- Prussian blue
- Jahn–Teller effect
- Coprecipitation
- Doping
- Ion