Challenges of polymer electrolyte with wide electrochemical window for high energy solid‐state lithium batteries

Abstract With the rapid development of energy storage technology, solid‐state lithium batteries with high energy density, power density, and safety are considered as the ideal choice for the next generation of energy storage devices. Solid electrolytes have attracted considerable attention as key components of solid‐state batteries. Compared with inorganic solid electrolytes, solid polymer electrolytes have better flexibility, machinability, and more importantly, better contact with the electrode, and low interfacial impedance. However, its low ionic conductivity, narrow electrochemical stability window (ESW), and poor mechanical properties at room temperature limit its development and practical applications.…

• NN
  National Natural Science Foundation of China

  Awards: 22075320, U21A20170, 2019YFE0100200, 2019YFA0705703, No. U21A20170, 21875284
• FR
  Fundamental Research Funds for the Central Universities

  Awards: FRF-MP-20, FRF‐MP‐20‐28, FRF-MP-20-28