Three-dimensional networking binders prepared in situ during wet-slurry process for all-solid-state batteries operating under low external pressure

•3D networking binders for sulfide-electrolyte-based ASLBs are proposed.•Vulcanization proceeds simply by adding sulfur during the wet-slurry process.•Highly elastic binders help maintain microstructural integrity of electrodes.•The ASLB performance under no or low operating pressure is significantly enhanced.