Regulation of Local Chemistry in O3-type Layered Oxide Cathodes for Practical Sodium-Ion Batteries

Key Points

• The aim is to understand how local chemistry impacts the performance of O3-type layered oxide cathodes in sodium-ion batteries.
• Analyzed chemical compositions of O3-type layered oxides
• Conducted experiments to assess phase stability
• Measuring specific capacity under various conditions
• Identified phase transitions that reduce capacity
• Observed O2 release during cycling affects performance
• Proposed strategies to stabilize local chemistry