Layered oxide cathodes for sodium‐ion batteries: From air stability, interface chemistry to phase transition

Abstract Sodium‐ion batteries (SIBs) are considered as a low‐cost complementary or alternative system to prestigious lithium‐ion batteries (LIBs) because of their similar working principle to LIBs, cost‐effectiveness, and sustainable availability of sodium resources, especially in large‐scale energy storage systems (EESs). Among various cathode candidates for SIBs, Na‐based layered transition metal oxides have received extensive attention for their relatively large specific capacity, high operating potential, facile synthesis, and environmental benignity. However, there are a series of fatal issues in terms of poor air stability, unstable cathode/electrolyte interphase, and irreversible phase transition that…

• NN
  National Natural Science Foundation of China

  Awards: 52202284, LQ23E020002, 2020GK1014, 51772093
• SK
  State Key Laboratory of Electrical Insulation and Power Equipment

  Award: EIPE22208
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LQ23E020002