High-energy and long-life O3-type layered cathode material for sodium-ion batteries
Hanyang University · University of Alabama
Abstract
O3-type layered oxide for sodium-ion batteries have attracted significant attention owing to their low cost and high energy density. However, their applications are restricted by rapid capacity decay during long-term cycling, with uneven Na+ distribution and microcrack formation being key contributing factors. In this study, a customized reconstruction layer integrating a fast ion conductor NaCaPO4 coating with gradient Ca2+ doping is developed to enhance the surface chemical and mechanical stability of the layered cathodes. The gradient Ca2+ doped interphase facilitates uniform phase transformation within the particles, minimizes lattice mismatch, ensures even Na+ distribution, and mitigates microcrack…
Citation impact
- FWCI
- 62.21
- Percentile
- 100%
- References
- 66
Authors
6Topics & keywords
- Cathode
- Sodium
- Ion
- Materials science
- Energy density
- Chemistry
- Engineering physics
- Physics
- Affordable and clean energy