以污泥、污泥源腐殖酸为前驱物,通过活化处理及热还原法制备碳材料。利用SEM、BET、Raman和FT-IR对材料进行结构分析,并利用CV、GCD和EIS等研究其电化学性能。结果表明,KOH作活化剂可以有效改善材料电化学性能,腐殖酸与KOH的活化比为1∶1时材料表现出较高比表面积(174 6 m²/g)和孔容(1.074 5 cm³/g)。该材料在三电极系统中比电容达186.7 F/g,等效内阻仅0.488 Ω,倍率性能良好。以污泥源腐殖酸为前驱物可制得成本低廉的储能材料,为污泥中潜在资源的开发及利用提供了新途径;其良好的电化学性能拓宽了超级电容器中电极材料的应用领域。

Sludge and sludge-derived humic acid are used as precursors to prepare carbon material by an activation thermal reduction treatment method.The structure of the material is analyzed by means of SEM,BET,Raman and FT-IR,and the electrochemical properties are investigated by means of CV,GCD and EIS.It is shown that KOH as an activator can effectively improve the electrochemical performance of the material.The prepared carbon material exhibits higher specific surface area (1,746 m²·g^-1) and pore volume (1.0745 cm³·g^-1) when the activation ratio of humic acid and KOH is 1∶1.It has a specific capacitance of 186.7 F·g^-1 in a three-electrode system,an equivalent internal resistance of only 0.488 Ω,and good rate performance.It is indicated that low-cost energy storage material can be prepared by using sludge-derived humic acid as the precursor,which provides a new way for the development and utilization of potential resources in sludge.The good electrochemical properties of the material broaden the application field of electrode materials in supercapacitors.

贾潇田(1997-),女,硕士研究生,研究方向为固体废物资源化利用,1095174461@qq.com