同步活化法制备汉麻秆多孔碳及其电容特性研究  

Study on preparation of hemp stalk porous carbon by simultaneous activation method and the capacitor performance

作　　者：吕冠辰 阚侃[1,2] 石雨[2] 于倩[1] 那宏壮 LV Guan-chen;KAN Kan;SHI Yu;YU Qian;NA Hong-zhuang(Institute for Advanced Technology of Heilongjiang Academy of Sciences,Harbin 150000,China;Daqing Branch of Heilongjiang Academy of Sciences,Daqing 163000,China)

机构地区：[1]黑龙江省科学院高技术研究院,黑龙江哈尔滨150000 [2]黑龙江省科学院大庆分院,黑龙江大庆163000

出　　处：《化学工程师》2025年第2期1-7,共7页Chemical Engineer

基　　金：黑龙江省科学院院长基金(YZ2023GJS02):高倍率改性天然石墨负极材料制备技术研究。

摘　　要：生物质多孔碳是一种性能优异、成本低廉、环境友好的超级电容器电极材料。本文以廉价可再生的汉麻秆芯为碳源,采用KOH和K_(2)CO_(3)复配活化剂同步活化制备了具有高比表面积(2272m^(2)·g^(-1))的汉麻秆多孔碳(HSPC)。复配活化剂在碳化过程中促进碳化物形成,在活化过程中产生新孔,形成呈多级孔结构的HSPC。HSPC作为电极材料表现出优异的电容特性:三电极体系中比电容高达305.5F·g^(-1),对称超级电容器的比电容达到69.1F·g^(-1),10000次循环稳定性达到92.5%。HSPC优异的电化学性能源于其多级孔结构、掺杂氧产生赝电容以及良好的可润湿性。Biomass porous carbon is a low-cost and environmentally friendly supercapacitor electrode material with excellent performance.In this study,we used cheap and renewable hemp stalks as carbon source,KOH and K_(2)CO_(3)as composite activators to prepare hemp stalk porous carbon(HSPC)materials with high specific surface area(2272m^(2)·g^(-1))by simultaneous activation method.The multi-level pore structure HSPC was formed by composite activators which promoted the formation of carbides during carbonization and generated new pores during activation.HSPC exhibites excellent electrochemical performance as a supercapacitor electrode material.The specific capacitance of the HSPC electrode is 305.5F·g^(-1)in three-electrode system.Symmetrical supercapacitor has specific capacitance of 69.1F·g^(-1)and cycle stability of 92.5%after 10,000 cycles.Excellent electrochemical performance of HSPC is due to multi-level pore structure,oxygen doping pseudocapacitance and good wettability.

关 键 词：汉麻秆 多孔碳 同步活化 电极材料 超级电容器 

分 类 号：O646[理学—物理化学] TQ152[理学—化学]