环糊精基活性炭的制备及其电化学性能  

Preparation and electrochemical properties of cyclodextrin based activated carbon

作　　者：钱科 邓苗 乔志军 方志梅[1] 屠建飞[1] 阮殿波 QIAN Ke;DENG Miao;QIAO Zhijun;FANG Zhimei;TU Jianfei;RUAN Dianbo(College of Mechanical Engineering and Mechanics,Ningbo University,Ningbo 315211,Zhejiang,China;The 95979th Troops of PLA,Tai’an 271207,Shandong,China;Ningbo CRRC New Energy Technology Co.,Ltd.,CRRC Ultracapacitor Energy Storage and Energy Saving Technology Research Center,Ningbo 315211,Zhejiang,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]中国人民解放军95979部队,山东泰安271207 [3]宁波中车新能源科技有限公司,中国中车超级电容储能及节能技术研究中心,浙江宁波315112

出　　处：《化工进展》2022年第4期2000-2006,共7页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(22078164);山西省关键核心技术和共性技术研发攻关专项(20201102018);宁波市科技创新2025重大专项(2019B10045;2019B10109)。

摘　　要：以环糊精为原料,采取先炭化后活化的方式,制备了具有高比表面积和丰富孔道结构的活性炭材料。本文通过改变KOH与环糊精炭化样品之间的碱炭比,研究了KOH用量对环糊精基活性炭结构及其电化学性能影响。在活化时间、活化温度等因素不变的情况下,活性炭的比表面积、总孔容及比电容随着碱炭比的提高,均呈现先增大后减小的趋势。当碱炭比为3时,活性炭的比表面积为1672m^(2)/g,总孔容为0.75cm^(3)/g,具有最佳的电容性能,在1A/g电流密度下比电容可达165F/g,优于同等条件下的商业炭21KSN(145F/g),50000次循环后的比电容保持率为98.7%。Using cyclodextrin as raw material,activated carbon with high specific surface area and abundant pore structure were obtained by carbonization-activation method.Keeping activation time and activation temperature as constant,the pore structure and electrochemical performance of activated carbon in different alkali-carbon ratio(KOH/C)were investigated.Increasing the dosage of KOH,the surface area,total pore volume and specific capacitance of the samples all indicated a trend of first increasing and then decreasing.When the alkali-carbon ratio was 3,the prepared sample showed the best capacitance performance.This sample had the highest value of specific surface area(1672m^(2)/g),and highest value of total pore volume(0.75m^(3)/g).Moreover,the specific capacitance of the sample can reach 165F/g at 1A/g current density,which was better than commercial activated carbon 21KSN(140F/g)under the same condition,and its capacity retention rate was still 98.7%after 50000 cycles.

关 键 词：环糊精 活性炭 KOH活化 碱炭比 电化学 

分 类 号：TQ424.1[化学工程]