| 煤基活性炭电极材料的制备及电化学性能 |
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| 引用本文： | 张传祥,张睿,成果,谢应波,詹亮,乔文明,凌立成. 煤基活性炭电极材料的制备及电化学性能[J]. 煤炭学报, 2009, 34(2): 252-256 |
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| 作者姓名： | 张传祥 张睿 成果 谢应波 詹亮 乔文明 凌立成 |
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| 作者单位： | 1.华东理工大学 化学工程联合国家重点实验室，上海,200237;2.河南理工大学 材料科学与工程学院，河南 焦作,454000 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金重点项目，上海市登山行动计划基础研究重点项目 |
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| 摘 要： | 以太西无烟煤为原料、KOH为活化剂制备高比表面积的活性炭.采用N2吸附法对活性炭的比表面积、孔容和孔径分布进行了表征，并评价了其用作超级电容器电极材料的电化学特性.在碱炭比为4∶1，800 ℃条件下活化1 h制备的活性炭比表面积达3 059 m2/g，总孔容为1.66 cm3/g，中孔率63%.该活性炭在3 mol/L KOH电解液中的比电容为322 F/g，大电流密度下充放电时的比电容保持率高，漏电流仅有0.06 mA，是理想的超级电容器电极材料.
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| 关 键 词： | 活性炭；超级电容器；比表面积；比电容 |
| 收稿时间： | 2008-02-24 |
Preparation and electrochemical properties of coal-based activated carbons |
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| ZHANG Chuan-xiang,,ZHANG Rui,CHENG Guo,XIE Ying-bo,ZHAN Liang,QIAO Wen-ming,LING Li-cheng. Preparation and electrochemical properties of coal-based activated carbons[J]. Journal of China Coal Society, 2009, 34(2): 252-256 |
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| Authors: | ZHANG Chuan-xiang ZHANG Rui CHENG Guo XIE Ying-bo ZHAN Liang QIAO Wen-ming LING Li-cheng |
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| Affiliation: | 1.State Key Laboratory of Chemical Engineering;East China University of Science and Technology;Shanghai 200237;China;2.School of Material Science and Engineering;Henan Polytechnic University;Jiaozuo 454000;China |
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| Abstract: | Anthracite from Taixi Coal Mine was activated by KOH to prepare high performance activated carbons as electrodes for electric double layer capacitors (EDLCs). The effect of preparation parameters on the properties of activated carbons was investigated and their EDLC properties were measured in 3 mol/L KOH aqueous solution. The surface area of the AC sample prepared with KOH/coal ratio of 4∶1 at 800 ℃for 1 h reaches 3 059 m2/g, and its pore volume is 1.66 cm3/g, in which the mesoporosity is 63%. The as prepared activated carbons exhibit large capacitances (322 F/g) and low leakage current (0.06 mA). |
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| Keywords: | activated carbon super capacitor specific surface area specific capacitance |
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