Scalable, Ultrathin, and High‐Temperature‐Resistant Solid Polymer Electrolytes for Energy‐Dense Lithium Metal Batteries

Abstract All‐solid‐state batteries (ASSBs) demonstrate great promise, offering high energy density, good thermal stability, and safe operation compared with traditional Li‐ion batteries. Among various solid‐state electrolytes (SSEs), solid polymer electrolytes (SPEs) offer an attractive choice due to their thinness, low density, and good manufacturability. However, ultrathin SPEs that work with practical current densities or at high temperatures remain challenging, limiting applicable conditions of SPE‐based batteries. Here, the authors report a novel scalable, ultrathin, and high‐temperature‐resistant SPE for ASSBs. This design includes an electrospun polyacrylonitrile (PAN) matrix and polyethylene oxide…

• SU
  Stanford University
• CS
  China Scholarship Council