| 天然焦基活性炭的制备及其电化学性能 |
| |
| 引用本文： | 张传祥,王海娟,段玉玲,杨俊和.天然焦基活性炭的制备及其电化学性能[J].煤炭转化,2009,32(3). |
| |
| 作者姓名： | 张传祥 王海娟 段玉玲 杨俊和 |
| |
| 作者单位： | 1. 河南理工大学材料科学与工程学院,454000,河南焦作
2. 上海应用技术学院,200235,上海 |
| |
| 基金项目： | 河南理工大学青年基金，矿物加工学科发展基金 |
| |
| 摘 要： | 以永城天然焦为前驱体,KOH为活化剂制备高比表面积活性炭,并将其作为超级电容器的电极材料.采用N2吸附和X射线衍射(XRD)对活性炭的比表面积、孔结构及微晶结构进行了表征,用恒流充放电、循环伏安和交流阻抗等电化学测试手段评价了其电化学特性.在碱炭比为4∶1,800 ℃活化1 h的条件下制备出比表面积2 441 m2/g,孔容1.5 cm3/g,中孔率67 %的活性炭.该活性炭电极在3 M KOH水溶液及1 M (C2H5)4NBF4/碳酸丙烯酯(PC)电解液中具有高的比电容(分别达到252 F/g,163 F/g),低的扩散阻抗(分别为0.5 Ω和6.8 Ω).
|
| 关 键 词： | 活性炭 电化学电容器 天然焦 比表面积 |
ACTIVATED CARBONS PREPARED FROM NATURAL COKE AND ITS ELECTROCHEMICAL PERFORMANCE AS ELECTRODE FOR EDLCS |
| |
| Zhang Chuanxiang,Wang Haijuan,Duan Yuling,Yang Junhe.ACTIVATED CARBONS PREPARED FROM NATURAL COKE AND ITS ELECTROCHEMICAL PERFORMANCE AS ELECTRODE FOR EDLCS[J].Coal Conversion,2009,32(3). |
| |
| Authors: | Zhang Chuanxiang Wang Haijuan Duan Yuling Yang Junhe |
| |
| Affiliation: | He'nan Polytechnic University;454000 Jiaozuo;He'nan;Shanghai Institute of Technology;200235 Shanghai |
| |
| Abstract: | Natural coke from Yongcheng was activated by KOH to prepare high-performance activated carbons as electrodes for electric double-layer capacitors(EDLCs).Specific surface area and pore structure of activated carbons was investigated and their EDLC properties were measured in 3 M KOH aqueous solution and 1 M(C2H5)4NBF4/propylene carbonate(PC)solution.The as-prepared activated carbons exhibit large surface areas(2 441 m2/g),high capacitances(252 F/g in 3 M KOH aqueous electrolyte,163 F/g in 1 M(C2H5)4NBF4/PC e... |
| |
| Keywords: | activated carbon electrochemical capacitor natural coke specific surface area |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
