近日,实验室朱宇灿老师通过界面集成策略构建一个基于石墨烯的超级电容器进行电化学储能的论文发表在Carbon Letters。
With the rapid development of fexible wearable electronic products, fexible all graphene-based supercapacitors (FGSCs) with reduced graphene oxide rGO//graphene oxide (GO)//rGO structure have attracted substantial attention due to their unique structures and energy storage mechanism. However, restricted by design idea and preparation technology, improvement of capacitance performance for the FGSCs is not obvious recently. Herein, we demonstrate that an interface integration strategy of constructing the high-performance FGSCs with compact structure. Hydroquinone (HQ)-modifed rGO (HQ-rGO) flms (electrode materials) and sulfuric acid-intercalated GO flms (electrolyte/separator) are assembled into the FGSCs utilizing hydrogen bonding and capillary contractility. The HQ further improves the electrochemical capacitance of electrode materials. The synergistic efect of the hydrogen bonding and capillary contractility guarantees compact and stable structureof the device. The resulting FGSCs exhibit an excellent areal capacitance of 804.6 mF cm−2 (@2 mA cm−2) and 441 mF cm−2 (@30 mA cm−2), and their highest energy and power densities can achieve 109.5 μWh cm−2 and 21,060 μW cm−2, respectively. These performances are superior to other all-in-one graphene-based SCs reported. Therefore, the construction technology of the FGSCs is a promising for developing all graphene-based SCs with high-performance.
论文题目:Constructing all‑in‑one graphene‑based supercapacitors for electrochemical energy storage via interface integration strategy
论文作者:Yucan Zhu,Long Peng,Song Chen,Yuchao Feng,Jianxing Xia,Wei Wang,Liang Chen,Hong Yin,Minjie Zhou,Zhaohui Hou.