The demand for energy and energy storage devices is the urgent need of our society due to heavy dependence on electric appliances. Hence, the demand of graphene-like smart materials has grown tremendously in the past years. Herein, we investigated the binder-free graphene allies named reduced graphene oxide (rGO) as electrode materials for the supercapacitor after the reduction of graphene oxide by sinking and leaving process. The rGO-based devices show the areal specific capacitance of 80.2 and 7.89 mF cm−2 with aqueous 1M phosphoric acid (H3PO4) and poly (vinyl alcohol)-H3PO4 polymer gel electrolytes, respectively, over the graphite sheet.

中文翻译：

---

无粘合剂还原氧化石墨烯作为具有水电解质和聚合物电解质的高效超级电容器的电极材料

由于对电器的严重依赖，对能源和储能设备的需求是我们社会的迫切需要。因此，石墨烯类智能材料的需求在过去几年中大幅增长。在此，我们研究了在通过下沉和离开过程还原氧化石墨烯后，将无粘合剂的石墨烯盟友称为还原氧化石墨烯 (rGO) 作为超级电容器的电极材料。基于 rGO 的器件在石墨片上显示出 80.2 和 7.89 mF cm-2 的面积比电容，分别使用 1M 磷酸 (H3PO4) 水溶液和聚乙烯醇-H3PO4 聚合物凝胶电解质。