Multiple Strategies to Build High-Performance Spherical Na-Ion Layered Oxide Cathodes
The development prospect of layered transition metal oxides in sodium-ion batteries is excellent, but there are some problems, such as poor cycle stability and a complex phase transition. The spherical NaNi<sub>0.25</sub>Fe<sub>0.15</sub>Mn<sub>0.3</sub>Ti<sub>0.1</sub>Sn<sub>0.05</sub>Co<sub>0.05</sub>Li<sub>0.1</sub>O<sub>2</sub> (SP-HEO) has been developed to address the challenges faced by O3-type layered oxide in sodium-ion batteries. The SP-HEO material is synthesized by piling and high entropy. The multiple strategies combine to enhance the electrochemical performance and air stability. The SP-HEO demonstrated a specific discharge capacity of 150.1 mA h g<sup>-1</sup> at 0.1 C and 100.4 mA h g<sup>-1</sup> at 7 C. Ex situ XRD analysis confirmed that the SP-HEO effectively retards complex phase transitions. This study not only introduces a high-entropy design for high tap density spherical storage materials but also dispels industry concerns regarding the performance of sodium ion layered oxide cathode materials.
Authors
- Yuantao Cui
- Ming Ge
- Xinyu Tang (ORCID: https://orcid.org/0000-0002-5711-7571)
- Mengdan Zhang
- Shuting Yang (ORCID: https://orcid.org/0000-0001-7841-0016)
- Huishuang Zhang
- Xiaojian Liu (ORCID: https://orcid.org/0000-0001-8147-9954)
- Xiangnan Li (ORCID: https://orcid.org/0000-0003-3660-6031)
- Yanhong Yin (ORCID: https://orcid.org/0000-0001-8853-9075)
- Yiwei Xu (ORCID: https://orcid.org/0000-0002-9668-8676)
Institutions
- Henan Normal University (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-11-13
- DOI
- https://doi.org/10.1021/acs.nanolett.4c02644
- Citations
- 9
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.88
Funders
- Henan Provincial Science and Technology Research Project