Electrolyte Chemistry toward Ultrawide-Temperature (−25 to 75 °C) Sodium-Ion Batteries Achieved by Phosphorus/Silicon-Synergistic Interphase Manipulation

All-weather operation is considered an ultimate pursuit of the practical development of sodium-ion batteries (SIBs), however, blocked by a lack of suitable electrolytes at present. Herein, by introducing synergistic manipulation mechanisms driven by phosphorus/silicon involvement, the compact electrode/electrolyte interphases are endowed with improved interfacial Na-ion transport kinetics and desirable structural/thermal stability. Therefore, the modified carbonate-based electrolyte successfully enables all-weather adaptability for long-term operation over a wide temperature range. As a verification, the half-cells using the designed electrolyte operate stably over a temperature range of −25 to 75 °C,…

• NS
  Natural Science Foundation of Jilin Province

  Award: 20220508141RC
• NN
  National Natural Science Foundation of China

  Award: 52173246
• HE
  Higher Education Discipline Innovation Project

  Award: B13013
• NK
  National Key Research and Development Program of China

  Award: 2023YFE0202000