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材料工程  2018, Vol. 46 Issue (7): 157-164    DOI: 10.11868/j.issn.1001-4381.2017.001308
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
超级电容器用马尾藻基超级活性炭的制备及其电化学性能
李诗杰1, 张继刚2, 李金晓1, 韩奎华1, 韩旭东1, 路春美1
1. 山东大学 能源与动力工程学院, 济南 250061;
2. 济南宇煊环保技术有限公司, 济南 250101
Preparation and Electrochemical Property of Gulfweed-based Super Activated Carbon for Supercapacitor
LI Shi-jie1, ZHANG Ji-gang2, LI Jin-xiao1, HAN Kui-hua1, HAN Xu-dong1, LU Chun-mei1
1. School of Energy and Power Engineering, Shandong University, Jinan 250061, China;
2. Jinan Yu Xuan Environmental Technology Co., Ltd., Jinan 250101, China
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摘要 以马尾藻为原料,采用KOH活化法制备用于超级电容器的生物质基超级活性炭。制备的超级活性炭不仅比表面积巨大,孔隙结构丰富,而且以海藻作为前驱体原料明显降低了活性炭的生产成本。采用单因素实验法分析了浸渍比、活化温度和活化时间对马尾藻基活性炭孔隙结构(比表面积、孔容及孔径分布等)的影响,探索了制备马尾藻基超级活性炭的最佳工艺条件,并研究了所制活性炭用于制备超级电容器时的电化学性能。采用N2吸附-解吸附、SEM、XRD,恒电流充放电以及循环伏安法等表征手段考察超级活性炭样品的比表面积,孔结构以及电化学性能。实验结果表明,制备马尾藻基超级活性炭的最佳工艺条件为:浸渍比4:1,活化时间120min,活化温度800℃。在该实验条件下制得的活性炭比表面积高达2926m2/g,孔容高达1.536cm3/g,且所有活性炭的孔径大小几乎全部分布在4nm以内,孔径分布均匀。制备的超级电容器以6mol/L的KOH为电解液时,其比电容高达358.5F/g,表现出良好的电化学性能。
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李诗杰
张继刚
李金晓
韩奎华
韩旭东
路春美
关键词 KOH活化法马尾藻基超级活性炭超级电容器电化学性能    
Abstract:Gulfweed was used as raw material, and KOH activation method was adopted for producing activated carbons with high specific surface area.The prepared super activated carbon not only has large specific surface area, rich pore structure, but also reduces the production cost of activated carbon by using algae as precursor material. In order to explore the experimental approaches and technological conditions, single factor method was used to analyze the influence of impregnation ratio, activation time and activation temperature on specific surface area, pore structure and surface properties, and the electrochemical performance of super-capacitor based on the prepared activated carbon was studied. Measurements such as N2 adsorption, XRD, SEM, constant current charge-discharge techniques, and the cyclic voltammetry were carried out to investigate specific surface area, pore structure and electrochemical performance. The results show:the best preparation condition is concluded as:impregnation ratio at 4:1, activation time for 120 min and activation temperature at 800℃, on the occasion, the largest specific surface area is 2926m2/g, and the biggest pore volume is 1.536cm3/g with all the pore diameters almost under 4nm evenly. The super-capacitor has a large specific capacitance as 358.5F/g in the 6mol/L KOH electrolyte, which means a very good performance.
Key wordsKOH activation    gulfweed-based super activated carbon    supercapacitor    electrochemical performance
收稿日期: 2017-10-22      出版日期: 2018-07-20
中图分类号:  TQ150  
通讯作者: 韩奎华(1978-)男,副教授,博士,研究方向为生物质能热转化,联系地址:济南市经十路17923号山东大学能源与动力工程学院热能工程研究所(250061),E-mail:hankh@163.com     E-mail: hankh@163.com
引用本文:   
李诗杰, 张继刚, 李金晓, 韩奎华, 韩旭东, 路春美. 超级电容器用马尾藻基超级活性炭的制备及其电化学性能[J]. 材料工程, 2018, 46(7): 157-164.
LI Shi-jie, ZHANG Ji-gang, LI Jin-xiao, HAN Kui-hua, HAN Xu-dong, LU Chun-mei. Preparation and Electrochemical Property of Gulfweed-based Super Activated Carbon for Supercapacitor. Journal of Materials Engineering, 2018, 46(7): 157-164.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.001308      或      http://jme.biam.ac.cn/CN/Y2018/V46/I7/157
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