▎ 摘　　要

Nanoparticles of hexacyanoferrate/cetyltrimetyl ammonium bromide/graphene (NiHCF/CTAB/rGO) with diameters about 20 nm were synthesized by using the reverse microemulsion method. Generally, NiHCF and graphene dispersed in water are negatively charged. In the reverse microemulsion system, the cationic surfactant hexadecyl trimethyl ammonium bromide (CTAB) changed the surface charge of NiHCF particles into positive charge, which results in the adsorption of NiHCF/CTAB particles onto the surface of reduced graphene (rGO) via electrostatic adsorption. The results from electrochemical measurements show that the specific capacitance of NiHCF/CTAB/rGO hybrids attain values up to 415 Fg(-1) when the discharge current density is 0.2Ag(-1). The NiHCF/CTAB/rGO hybrids capacitance retention values range from 93.25% to 68.67% for discharge current densitiy of 10A g(-1) and 20A g(-1), respectively. The NiHCF/CTAB/rGO hybrids retain approximately 92% of their initial capacitance at 0.2 A g(-1) after 1000 discharge/charge cycles due to the tight contact between the good conductive graphene and NiHCF/CTAB. The energy density is nearly 36.89 Wh kg(-1) when the power density is 80W kg(-1). Therefore, one can conclude that the electrochemical performance of NiHCF/CTAB/rGO hybrids suggests its capability of being a promising candidate as supercapacitors materials. (C) 2016 Elsevier B.V. All rights reserved.