 3D interconnected ion transmission path porous emzene films with high capacitance of 688.9 FG-1 and good rate capability are constructed using NH3-induced in situ etching strategy, resulting in superior electrochemical performance, 99.7 FG-1 at 1 AG-1, and excellent flexibility for solid-state flexible supercapacitors. This article was authored by Yong Bin Wang, Ning Jiu and Chen, Bin Zhou, and others.