Ionic-electronic dual-conductive polymer modified LiCoO 2 cathodes for solid lithium batteries.

An ionic-electronic dual-conductive polymer, fabricated by doping polyethylene glycol into polyaniline, is used to modify LiCoO 2 cathodes for solid lithium batteries. The polymer enables uniform and fast conductive networks in cathodes and stabilizes the generation of cathode interface layers. The cell maintains high cycle stability of 91.8% capacity retention after 200 cycles.