高效KOH活化法制备酶解木质素基多孔炭

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中图分类号：O641 文献标志码：A 文章编号：1671-589（2026）01-0174-11

Highly Effective KOH Activation Method for Preparing Enzymatic Lignin-Based Porous Carbon

WANG Rui，PANGGuoli，LIUYiming，ZHU Yuping，DONGLili，REN Suxia （Schoolof Petrochemical Engineering，Changzhou Uniuersity，Changzhou 213164，JiangsuProvince，China; Instituteof UrbanandRural Mining，ChangzhouUniversity，Changzhou213164，Jiangsu Prouince，China）

Abstract：Using enzymatic lignin as raw material，porous lignin based carbon materials were constructed by optimizing the KOH activation process The effects of parameters such as carbonalkali ratio，activation temperatureand activation time on the structure of lignin-based porous carbon materials were studied by using a one-step activation method.We tested the electrochemical properties of the prepared materials in a three-electrode system and assembled symmetrical supercapacitors by using KOHas the electrolyte to test the cycling stability of the material during continuous charge and discharge processes. The results show that when the activation temperature is 700° ，the carbon-alkali ratio is 4：1 ，and the activation time is 2h ，a porous carbon sample （ELC700-2-4）⋅ ）witha high specific surface area （3067m2/g） and high microporosity 62.18% ）canbe prepared.In the three-electrode system，the material exhibits excellent electrochemical performance inKOH as the electrolyte，and the specific capacitance can reach 443F/g at 1A/g The specific capacitance of ELC700-2-4 electrode is 250F/g at 1A/g ，and the capacitance retention rate after l0 000 cycles is 95.55% ，indicating that the electrode has excellent cycling stability during continuouscharging and discharging. The energy density of symmetrical capacitor is 8.6W⋅h/kg when the power densityis 500.16 W/kg.

Keywords：lignin；KOH activation；porous carbon；supercapacitor

由于石油燃料的过度开采和使用已引发严重的环境污染和能源短缺问题[，因此开发环境友好、低碳排放的可再生能源，以及有效提高资源利用效率已引起人们广泛关注[2。（剩余17594字）