A novel electrode material for supercapacitor has been developed based on biochemically reduced graphene oxide/zerovalent iron (rGO/Fe⁰) and polyaniline (PANI) ternary hybrid composite synthesized by interfacial polymerization. The composites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), ultraviolet–visible absorption (UV–Vis), X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS) and electrical conductivity measurements. The composites exhibited noticeable improvement in electrical conductivity and excellent electrochemical reversibility when compared to bare polymer. The electrochemical properties of the composite electrode are investigated by galvanostatic charge–discharge, electrochemical impedance spectroscopy (EIS) studies. The enhanced specific capacitance with higher conductivities is observed in PANI/rGO/Fe⁰ (342 F g⁻¹) when compared with PANI (182 F g⁻¹) and PANI/rGO composites (294 F g⁻¹) with a constant current density of 1.0 A g⁻¹. The cyclic stability of the composite, following 500 cycles of operations, was at 68.6 (PANI), 80.6 (PANI/rGO) and 95.4% (PANI/rGO/Fe⁰) of their initial capacitance. The higher conductivity, higher specific capacitance and cyclic self-stability of PANI/rGO/Fe⁰ ternary composite can provide new prospects in the field energy storage application.

基于生化还原氧化石墨烯/零价铁（rGO/Fe ⁰) 和通过界面聚合合成的聚苯胺 (PANI) 三元杂化复合材料。通过傅里叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM)、紫外-可见吸收 (UV-Vis)、X 射线衍射 (XRD)、X 射线光电子能谱 (XPS) 和电导率测量对复合材料进行表征. 与裸聚合物相比，复合材料在导电性和电化学可逆性方面表现出显着改善。通过恒电流充放电、电化学阻抗谱（EIS）研究来研究复合电极的电化学性能。在 PANI/rGO/Fe ⁰ (342 F g ^-1)与恒定电流密度为 1.0 A g ^{-1 的}PANI (182 F g ^-1 ) 和 PANI/rGO 复合材料 (294 F g ^-1 ) 相比。经过 500 次操作循环后，复合材料的循环稳定性为其初始电容的68.6 (PANI)、80.6 (PANI/rGO) 和 95.4% (PANI/rGO/Fe ⁰ )。PANI/rGO/Fe ⁰三元复合材料具有更高的电导率、更高的比电容和循环自稳定性，可为现场储能应用提供新的前景。