Abstract We introduce high-performance polyaniline (PANI) nanocomposite supercapacitors based on gamma aluminum oxide (γ-Al 2 O 3 ) and gamma iron (III) oxide (γ-Fe 2 O 3 ) nanoparticles with a high specific surface area. PANI and its polymer nanocomposites are synthesized via in situ electropolymerization on gold electrodes. The structures and morphologies are characterized by cyclic voltammetry, FT-IR spectroscopy, SEM, TEM, and EDX. The electrochemical properties and specific surface area of the electrodes are investigated by galvanostatic charge–discharge, electrochemical impedance spectroscopy (EIS) and BET theory. The enhanced specific capacitance with higher surface area and conductivities is observed in PANI/γ-Fe 2 O 3 (342 F/g), PANI/γ-Al 2 O 3 (292 F/g) and PANI (180 F/g) electrodes with a constant current density of 1A/g. The cyclic performance of the PANI electrodes following 8000 cycles of operations were at 87% (PANI), 91% (PANI/γ-Al 2 O 3 ), and 93% (PANI/γ-Fe 2 O 3 ) of their initial capacitance. In addition, higher specific capacitances, higher conductivity and cyclic self-stabilities observed for the PANI/nanocomposite electrodes can provide new opportunities in the field of energy storage and supercapacitor applications.

中文翻译：

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具有高比电容和表面积的聚苯胺/铝和氧化铁纳米复合材料超级电容器电极

摘要 我们介绍了基于具有高比表面积的伽马氧化铝 (γ-Al 2 O 3 ) 和伽马氧化铁 (III) (γ-Fe 2 O 3 ) 纳米粒子的高性能聚苯胺 (PANI) 纳米复合超级电容器。PANI 及其聚合物纳米复合材料是通过金电极上的原位电聚合合成的。通过循环伏安法、FT-IR 光谱、SEM、TEM 和 EDX 表征结构和形态。通过恒电流充放电、电化学阻抗谱 (EIS) 和 BET 理论研究了电极的电化学性质和比表面积。在 PANI/γ-Fe 2 O 3 (342 F/g)、PANI/γ-Al 2 O 3 (292 F/g) 和 PANI (180 F/g) 中观察到具有更高表面积和电导率的增强比电容电流密度为 1A/g 的电极。经过 8000 次操作循环后，PANI 电极的循环性能分别为其初始电容的 87% (PANI)、91% (PANI/γ-Al 2 O 3 ) 和 93% (PANI/γ-Fe 2 O 3 ) . 此外，PANI/纳米复合电极具有更高的比电容、更高的电导率和循环自稳定性，可为储能和超级电容器应用领域提供新的机遇。