Efficient Modulation d/p‐Band Center Proximity in Birnessite‐Type MnO 2 by Cation/Anion Co‐Doping for Enhanced Dual‐Ion Storage
Xi’an University · Xi'an University of Technology
Abstract
Abstract The wide band gap of δ‐MnO 2 and the restricted regulation of the p‐band center ( p ) of active oxygen atoms hinder electron conduction and ion diffusion during zinc storage. Heteroatom doping has proven effective in improving zinc storage. However, the regulation of p solely through cation doping is comparatively constrained. Herein, a cation/anion co‐doping strategy is proposed to simultaneously adjust the p of oxygen and the d‐band center ( d ) of Mn by establishing Mn–O–Ca and Mn─N bonds in Ca/N co‐doped δ‐MnO 2 (Ca/N‐MnO 2 ). This co‐doping effect induces a shift in the predominant stretching vibration mode of Mn─O bonds in [MnO 6 ] octahedra, resulting in a decreased d/p‐band center proximity (Δ…
Citation impact
- FWCI
- 33.54
- Percentile
- 100%
- References
- 55
Authors
18- YXYuhui Xu
Xi’an University, Xi'an University of Technology
- GZGaini ZhangCorresponding
Xi’an University, Xi'an University of Technology
- XWXiaoxue Wang
Xi’an University, Xi'an University of Technology
- JZJianhua Zhang
Xi’an University, Xi'an University of Technology
- HWHang Wen
Xi’an University, Xi'an University of Technology
Topics & keywords
- Materials science
- Doping
- Ion
- Band gap
- Heteroatom
- Adsorption
- Inorganic chemistry
- Physical chemistry
- Affordable and clean energy