Herein, we developed an efficient method for covalent functionalization of reduced graphene oxide (rGO) with imidazolium-based poly(ionic liquid)s via the Diels-Alder (DA) click reaction in deep eutectic solvents (DESs). Firstly, poly(ionic liquid)s (P(F-IL)s) containing furfuryl and imidazolium were prepared by the reaction of poly(chloromethylstyrene-co-maleicanhydride), furfuryl amine and methylimidazole. Afterward, the P(F-IL)s were grafted directly on the rGO surface via the DA reaction in a deep eutectic solvent (DES) without catalyst under ultrasonication. The obtained hybrid materials were characterized by FT-IR, TGA, Raman spectroscopy, XPS, SEM, and TEM. The capacitive and electrochemical behaviors of the hybrid materials were studied by using cyclic voltammetry (CV) and electro chemical impedance spectroscopy (EIS). In CV, the rGO-P(F-IL) hybrid showed the largest capacitance and EIS revealed a lower diffusion resistance compared to that of rGO, which indicated a good electrochemical capacitor behavior of the hybrid.

在本文中，我们开发了一种有效的方法，用于在深共熔溶剂（DES）中通过Diels-Alder（DA）点击反应将还原的氧化石墨烯（rGO）与咪唑基聚离子液体共价官能化。首先，聚（离子性液体）S（P（F-IL）3）共同ntaining糠基和咪唑通过聚（氯甲基苯乙烯-共-顺丁烯二酸酐），糠胺和甲基咪唑的反应制得。之后，将P（F-IL）s通过以下方式直接嫁接到rGO表面：在超声作用下，在没有催化剂的深共熔溶剂（DES）中进行DA反应。通过FT-IR，TGA，拉曼光谱，XPS，SEM和TEM对获得的杂化材料进行表征。通过循环伏安法（CV）和电化学阻抗谱（EIS）研究了杂化材料的电容和电化学行为。在CV中，与rGO相比，rGO-P（F-IL）杂化物表现出最大的电容，而EIS显示出较低的扩散电阻，这表明杂化物具有良好的电化学电容器性能。