Azobenzene derivatives have fast light response characteristics; in this paper, a new azobenzene derivative (Azo) was synthesized and to be made a composite (PANI/GO/Azo) with polyaniline/graphene oxide (PANI/GO). Both composites were carefully investigated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). Moreover, their electrochemical properties were characterized by the electrochemical workstation, including cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), cycling stability, and electrochemical impedance spectroscopy (EIS). The results demonstrated that the PANI/GO/Azo composite has a higher capacitance of 478.3 F g−1 than that of PANI/GO (359.9 F g−1) at a current density of 1 A g−1. PANI/GO/Azo composite showed excellent photosensitive electrochemical properties under UV irradiation, and its rate of capacitance change achieved about 52.57%. Additionally, the PANI/GO/Azo composite also displayed high reversibility, with specific capacitance retention of 92% after 500 cycles. Therefore, the PANI/GO/Azo electrode with a controllable electrochemical performance by UV irradiation had a great potential in the photoresponsive supercapacitor.

中文翻译：

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聚苯胺/氧化石墨烯/偶氮苯复合材料的合成及其光电性能可调

偶氮苯衍生物具有快速的光响应特性；在本文中，合成了一种新的偶氮苯衍生物（Azo），并将其与聚苯胺/氧化石墨烯（PANI/GO）制成复合材料（PANI/GO/Azo）。通过扫描电子显微镜 (SEM)、傅里叶变换红外光谱 (FT-IR) 和热重分析 (TGA) 对两种复合材料进行了仔细研究。此外，通过电化学工作站对它们的电化学性质进行了表征，包括循环伏安法（CV）、恒电流充放电（GCD）、循环稳定性和电化学阻抗谱（EIS）。结果表明，在电流密度为 1 A g-1 时，PANI/GO/Azo 复合材料具有比 PANI/GO (359.9 F g-1) 更高的电容 478.3 F g-1。PANI/GO/Azo复合材料在紫外光照射下表现出优异的光敏电化学性能，其电容变化率达到52.57%左右。此外，PANI/GO/Azo 复合材料还显示出高可逆性，500 次循环后比电容保持率为 92%。因此，通过紫外线照射具有可控电化学性能的PANI/GO/Azo电极在光响应超级电容器中具有巨大的潜力。