Strengthening Transition Metal–Oxygen Interaction in Layered Oxide Cathodes for Stable Sodium-Ion Batteries
University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale · +1 more institution
Abstract
P2-type layered oxides, such as Na0.67Ni0.33Mn0.67O2, represent a promising class of cathode materials for Sodium-ion batteries (SIBs) due to their high theoretical energy density. However, their cycling stability is often compromised by severe phase transitions and irreversible lattice oxygen redox reactions at high voltages. In this work, we develop a Zn and Al codoping approach to design a Na0.71Ni0.28Zn0.05Mn0.62Al0.05O2 (ZA-NNMO) cathode for stable SIBs. Geometric phase analysis reveals that the introduction of inert Zn significantly mitigates the lattice distortion and transition-metal-ion migration, thereby inhibiting detrimental phase transition and structural collapse. The doped Al element in the Mn…
Citation impact
- FWCI
- 26.95
- Percentile
- 100%
- References
- 64
Authors
10- JDJunyi Dai
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- JLJiahao Li
University of Science and Technology of China
- YYYu Yao
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- YWYanru Wang
University of Science and Technology of China
- MMMingze Ma
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
Topics & keywords
- Materials science
- Cathode
- Oxide
- Transition metal
- Oxygen
- Sodium
- Ion
- Inorganic chemistry
Funding
- NNNational Natural Science Foundation of ChinaAwards: 523B2023, 52394171, 52394170, 52372239, U24A2064, U24A2067, 51925207
- CAChinese Academy of SciencesAward: XDA0400202
- SKState Key Laboratory of CatalysisAward: 2024SKL-B-003
- FRFundamental Research Funds for the Central UniversitiesAwards: YD2060002042, WK9990000170