A novel all solid-state asymmetric supercapacitor with superior electrochemical performance in a wide temperature range using a hydroquinone modified graphene xerogel as the cathode and N-doped Ti 3 C 2 T x as the anode

An all solid-state asymmetric supercapacitor composed of a hydroquinone modified graphene xerogel (cathode) and N-doped Ti ₃ C ₂ T _x (anode) shows superior electrochemical performance in a wide temperature range.