Polyanion-type cathode materials for sodium-ion batteries

Room-temperature sodium-ion batteries (SIBs) are regarded as promising candidates for smart grids and large-scale energy storage systems (EESs) due to their significant benefits of abundant and low-cost sodium resource. Among the previously reported cathode materials for SIBs, layered transition-metal oxides and polyanion-type materials are considered to be the most attractive options. Although many layered transition-metal oxides can provide high capacity due to their small molecular weight, their further application is hindered by low output voltage (mostly lower than 3.5 V), irreversible phase transition as well as storage instability. Comparatively, polyanion-type materials exhibit higher operating…

• NN
  National Natural Science Foundation of China

  Awards: 21421001, 51622102, 21835004
• MO
  Ministry of Science and Technology of the People's Republic of China

  Awards: 2017YFA0206702, 2016YFB0901502
• NS
  Natural Science Foundation of Tianjin City

  Awards: 18ZXJMTG00040, 19JCZDJC31800
• HE
  Higher Education Discipline Innovation Project

  Award: B12015