A high-stability biphasic layered cathode for sodium-ion batteries

Abstract
A P2/O3 Na0.62Ni0.33Mn0.62Sb0.05O2 composite cathode was synthesized which displays superior rate electrochemical performance compared with its monophasic counterpart Na0.67Ni0.33Mn0.67O2. P2–O2 phase transition is successfully suppressed and volume strain is extremely small during the electrochemical process.
Funding Information
  • National Natural Science Foundation of China (22075132, 51802149, U1801251)
  • Fundamental Research Funds for the Central Universities