| 废茶叶基活性炭的制备及其电化学性能研究 |
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| 引用本文： | 康伟伟,黄光许,张传祥,候文涛,姚友恒,耿乾浩,屈笑笑,张传涛,吕由.废茶叶基活性炭的制备及其电化学性能研究[J].材料导报,2017,31(Z1):227-231. |
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| 作者姓名： | 康伟伟 黄光许 张传祥 候文涛 姚友恒 耿乾浩 屈笑笑 张传涛 吕由 |
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| 作者单位： | 河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000;河南理工大学煤炭安全生产河南省协同创新中心,焦作 454000,河南理工大学化学化工学院,焦作 454000;河南理工大学煤炭安全生产河南省协同创新中心,焦作 454000,河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000,河南理工大学化学化工学院,焦作 454000 |
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| 基金项目： | 国家自然科学基金(U1361119)；河南省自然科学基金(162300410115) |
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| 摘 要： | 以废茶叶的炭化料为前驱体,KOH为活化剂(碱炭比1∶1、2∶1、3∶1),在800℃下活化1h制备双电层电容器用活性炭电极材料。利用扫描电镜、低温N2吸附对活性炭的形貌、孔结构进行表征,采用恒流充放电、循环伏安和交流阻抗等测试方法评价其在3mol/L KOH电解液中的电化学性能。结果表明,3种活性炭比表面积、总孔容和中孔率最高分别达1 900m2/g、0.919 4cm3/g和35.7%;3种活性炭电极材料在0.055 6 A/g电流密度下的比电容分别为202F/g、255F/g、194F/g,电流密度增加到2.780A/g时,电容保持率分别为84.2%、67.1%、86.6%;等效串联电阻仅为0.10~0.12Ω;在碱碳比为2∶1时制备的活性炭电极材料在2.363A/g下比电容为148F/g,经1 000次循环充放电后,其质量比电容为147.7F/g,电容保持率高达99.3%。
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| 关 键 词： | 废茶叶 活性炭 双电层电容器 电化学性能 |
Preparation and Electrochemical Performance of Activated Carbon Derived from Waste Tea-leaves |
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| KANG Weiwei,HUANG Guangxu,ZHANG Chuanxiang,HOU Wentao,YAO Youheng,GENG Qianhao,QU Xiaoxiao,ZHANG Chuantao and LU You.Preparation and Electrochemical Performance of Activated Carbon Derived from Waste Tea-leaves[J].Materials Review,2017,31(Z1):227-231. |
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| Authors: | KANG Weiwei HUANG Guangxu ZHANG Chuanxiang HOU Wentao YAO Youheng GENG Qianhao QU Xiaoxiao ZHANG Chuantao and LU You |
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| Affiliation: | College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000;Collaborative Innovation Center of Coal Work Safety,Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000;Collaborative Innovation Center of Coal Work Safety,Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000,College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000 and College of Chemistry and Chemical Engineering, Henan Polytechnic University,Jiaozuo 454000 |
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| Abstract: | |
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| Keywords: | waste tea-leaves activated carbon electric double layer capacitors electrochemical performance |
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