Metal ions addition as interfacial mediators toward improving the electrochemical performance of PANI−rGO aerogels

The morphology and the interface of the hybrid composite of PANI−rGO can be optimized by introducing of a tiny amount of divalent metal ions M (M = Ni2+, Co2+, Cu2+, Mn2+) as mediators, resulting in the significantly improved supercapacitive performance.590