A dual-site doping strategy to enhance the sodium storage performance of an O3-type layered sodium oxide cathode
The O3-type NaNi<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> material is modified by introducing Sr<sup>2+</sup> into the Na sites and Al<sup>3+</sup> into the transition metal (TM) sites. The inactive Sr<sup>2+</sup> and Al<sup>3+</sup> serve as structural pillars within the NaO<sub>2</sub> and TMO<sub>2</sub> slabs, respectively, expanding the interlayer spacing and boosting the stability of the structure. The optimized cathode demonstrates a good rate performance of 117.8 mAh g<sup>-1</sup> at 5C and exhibits outstanding cycling stability of 88% after 200 cycles, significantly surpassing the pristine material (68%).
Authors
- Yougen Tang (ORCID: https://orcid.org/0000-0002-7150-7947)
- Zhuoming Liu (ORCID: https://orcid.org/0000-0002-9845-9404)
- Ning Ding (ORCID: https://orcid.org/0000-0002-1321-9314)
- L.S. Yao
Institutions
- Central South University (CN)
- Hunan University of Arts and Science (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc03964a
- Citations
- 2
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.46