▎ 摘　　要

A novel ternary graphene/molybdenum oxide/poly(p-phenylenediamine) nanocomposite (GMP) has been successfully synthesized via a two-step process including the generation of binary graphene/MoO3 composites through a hydrothermal method and chemical polymerization of p-phenylenediamine (pPD) monomer. When the feed ratio of pPD to Na2MoO4 center dot 2H(2)O is 1, the resulting composite (GMP-1.0) possesses superior electrochemical performance with a maximum specific capacitance of 1042.6 F g(-1) at 1 A g(-1) in a three-electrode system and 418.5 F g(-1) at 1 A g(-1) in a two-electrode system. Its energy density achieves 24.56 W h kg(-1) at a power density of 325 W kg(-1), and 6.8 W h kg(-1) at a high power density of 3263 W kg(-1). Furthermore, the ternary composite retains 86.7% of the initial capacitance after 3000 cycles, indicating its excellent cycling stability.