Multiple Strategies to Build High-Performance Spherical Na-Ion Layered Oxide Cathodes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39536130.
- Also identified by DOI 10.1021/acs.nanolett.4c02644.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
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.