| 苎麻基活性炭纤维超级电容器材料的制备 |
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| 引用本文： | 刘凤丹,王成扬,杜嬛,陈明鸣. 苎麻基活性炭纤维超级电容器材料的制备[J]. 电源技术, 2009, 33(12) |
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| 作者姓名： | 刘凤丹 王成扬 杜嬛 陈明鸣 |
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| 作者单位： | 天津大学,化工学院,绿色合成与转化教育部重点实验室,天津,300072;天津大学,化工学院,绿色合成与转化教育部重点实验室,天津,300072;天津大学,化工学院,绿色合成与转化教育部重点实验室,天津,300072;天津大学,化工学院,绿色合成与转化教育部重点实验室,天津,300072 |
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| 摘 要： | 以天然植物纤维苎麻为原料.采用ZnCl_2化学活化法,制备不同活化温度下的活性炭纤维,并组装成超级电容器,通过低温氮气吸附测定了活性炭纤维的BET比表面积和孔结构,发现比表面积随活化温度的升高而减小.电化学测试结果表明经过650℃活化的活性炭纤维超级电容器在50 mA/g恒流放电时比电容达253 F/g,并且具有较低的内阻和较好的功率特性以及较长的循环寿命.
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| 关 键 词： | 超级电容器 活性炭纤维 苎麻 电容 孔结构 |
Preparation of ramie-based activated carbon fiber and its application in supercapacitors |
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| LIU Feng-dan,WANG Cheng-yang,DU Xuan,CHEN Ming-ming. Preparation of ramie-based activated carbon fiber and its application in supercapacitors[J]. Chinese Journal of Power Sources, 2009, 33(12) |
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| Authors: | LIU Feng-dan WANG Cheng-yang DU Xuan CHEN Ming-ming |
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| Affiliation: | LIU Feng-dan,WANG Cheng-yang,DU Xuan,CHEN Ming-ming (Key Laboratory for Green Chemical Technology of State Education Ministry,School of Chemical Engineering & Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Activated carbon fiber(ACF)for supercapacitor application was prepared from ramie fiber activated by zinc chloride(ZnCl_2)at different activation temperature.The BET specific surface area and pore structure parameters of ACFs were determined by the N_2 adsorption-desorption isotherms at 77 K,It is found that BET specific surface area is decreased with the activation temperature.The electrochemical test indicates that ACF activated at 650 ℃ shows higher specific capacitance(253 F/g)under 50 mA/g,lower series resistance,better power capability and longer cycle life. |
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| Keywords: | supercapacitor activated carbon fiber ramie capacitance pore structure |
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