Abstract: 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, 李颖, 张星楠, 李昕飞, 郭穆骞, 杨利霞. 基于腐殖酸基储能材料制备的污泥资源化利用研究[J]. 现代化工, 2022, 42(12): 108-113.
JIA Xiao-tian, LI Ying, ZHANG Xing-nan, LI Xin-fei, GUO Mu-qian, YANG Li-xia. Research on utilization of sludge through preparation of humic acid-based energy storage materials. Modern Chemical Industry, 2022, 42(12): 108-113.
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