石墨烯水凝胶是一种十分优异的超级电容器电极材料。以高浓度氧化石墨烯(GO)溶液和对氨基苯酚为反应前驱体,使用一步水热法合成了对氨基苯酚功能化石墨烯水凝胶(AFGHs)。通过X射线衍射、拉曼光谱、扫描电镜和红外光谱等手段表征了AFGHs的晶体结构、缺陷、形貌和化学组成。电化学测试结果表明,基于AFGHs的对称型超级电容器在0.3A/g电流密度下的比电容达到了243.2F/g。
Graphene hydrogel is an excellent electrode material for supercapacitors.4-Aminophenol functionalized graphene hydrogel (AFGHs) were synthesized by one step hydrothermal method with high concentration graphene oxide solution and 4-aminophenol as precursor.The crystal structure,defects,morphology and chemical composition of AFGHs were characterized by X-ray diffraction (XRD),Raman spectroscopy,scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR).The electrochemical test results showed that the symmetrical supercapacitor based on AFGHs had a specific capacitance of 243.2F/g at 0.3A/g.
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基金资助
国家自然科学基金(52072191);黑龙江省自然科学基金联合引导项目(LH2020E126);黑龙江省省属本科高校基本科研业务费青年创新人才项目(135509204);齐齐哈尔大学大学生创新创业训练计划项目(202010232051)
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