High rate capability electrode from a ternary composite of nanodiamonds/reduced graphene oxide@PANI for electrochemical capacitors

Abstract

Development of effective hybridization of carbonaceous materials and conductive polymers as electrode material is anticipated to promote the properties of electrochemical capacitors (ECs) but has remained a challenge. In this study, carboxylated nanodiamonds (cNDs) were utilized as both spacers and tougheners to successfully synthesize a ternary composite of cNDs/reduced graphene oxide (rGO)@PANI, exhibiting a hierarchical three-dimensional structure constituting both nanoclusters and finer nanorods features. The obtained cNDs/rGO@PANI composite demonstrates high rate capability and good cycle stability, suggesting the ternary composite is a promising electrode material for high-performance ECs.