高分子材料衍生多孔碳的制备及其电化学性能研究

Preparation and Electrochemical Properties of Porous Carbon Derived from Polymer Materials

为了制备出适合有机电解液的多孔碳材料,提高其电化学性能,本文利用高分子作为碳源,葡萄糖作为诱导剂,通过KOH活化,制备出3D交联多孔碳材料。通过XRD、拉曼、XPS、SEM等方法对其进行表征。组装成超级电容器,通过电化学测试表明,在1 A g−1下具有较高的比电容。在20 A g−1的电流密度下循环10,000次,还有66.2%的电容保持率。此外,在10 A g−1的高电流密度下,具有较小的电容衰减。

In order to prepare porous carbon material suitable for organic electrolyte and improve its elec-trochemical performance, this paper used polymer as carbon source and glucose as inducer, and prepared 3D cross-linked porous carbon material through KOH activation. It was characterized by XRD, Raman, XPS and SEM. The supercapacitor was assembled and the electrochemical test showed that it had a high specific capacitance at 1 A g−1. There is still capacitance retention of 66.2% at a current density of 20 A g−1 for 10,000 cycles. Furthermore at a high current density of 10 A g−1, there is only a small capacitance attenuation.