Electrolyte Design Strategies to Construct Stable Cathode‐Electrolyte Interphases for High‐Voltage Sodium‐Ion Batteries

Abstract Elevating the working voltage of sodium‐ion batteries is crucial for expanding their application scenarios. However, as the operating voltage of these batteries increases, the interfacial stability of existing electrolytes becomes inadequate to meet the demands of high‐voltage cathode materials. Along with the interaction with cathode interface, electrolyte trends to be decomposed forming an interphase between the cathode and electrolyte, which plays an essential role in the performance of batteries. This review systematically focuses on the reconstruction of cathode‐electrolyte interphase maintaining the interfacial stability via various strategies at high voltage range. The state‐of‐the‐art…