煤基活性炭的制备及在双电层电容器中的应用研究
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- 英文论文题名：The preparation of coal based activated carbon and its application in electric double layer capacitor
- 论文作者：贺姗 ; 吴燕 ; 曹景沛 ; 赵小燕 ; 魏贤勇
- 英文论文作者：Shan He ; Y Wu ; JP Cao ; XY Zhao ; XY Wei ; Key Laboratory of Coal Processing and Efficient Utilization Ministry of Education ; China University of Mining & Technology
- 年：2016
- 作者机构：中国矿业大学化工学院煤炭加工与高效利用教育部重点实验室;
- 论文关键词：褐煤 ; 活性炭 ; 恒流充放电 ; 比电容
- 英文论文关键词：lignite ; activated carbon ; constant current charge-discharge ; the specific capacitance
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十分会：化学电源
- 语种：中文
- 分类号：TQ424.1;TM53
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：111k
- 原文格式：D
- 会议级别：全国
摘要
以褐煤为原料,利用化学活化法制备高比表面积活性炭并用于双电层电容器电极。系统考察了炭化温度,活化温度,活化比例对活性炭孔隙结构及电化学性能的影响,综合运用SEM、XRD及氮气吸附表征所得活性炭的表面性质和孔结构。通过恒流充放电测试活性炭电极的电化学性能。结果表明,在炭化温度为500℃,活化温度为800℃和活化时间为4 h的条件下制备的活性炭比表面积达到2452 m~2 g~(-1),总孔容为1.41 cm~3g~(-1),在6 mol L~(-1) KOH电解液中比电容为213.33 F g~(-1),并表现出良好的电化学性能。
High specific surface area activated carbons(ACs) were prepared from lignite by carbonization-activation method,and were used as electrodes in electric double layer capacitors(EDLC).The effects of carbonization temperature,activation temperature and activation ratio on pore structure and electrochemical performance of ACs were investigated systematically.The SEM,XRD and N_2 adsorption were used to characterize the surface properties and pore structure of ACs.The electrochemical performance of electrode materials was tested by constant current charge-discharge.The best condition of preparing AC with specific surface area of 2452 m~2 g~(-1) and total pore volume of 1.41 cm~3 g~(-1) is carbonization temperature of 700 ℃,activation temperature of 800 ℃ and activation ratio of 4.0.The specific capacitance of the electrode reached 213.33 F g~(-1) and it showed good electrochemical characteristics.
High specific surface area activated carbons(ACs) were prepared from lignite by carbonization-activation method,and were used as electrodes in electric double layer capacitors(EDLC).The effects of carbonization temperature,activation temperature and activation ratio on pore structure and electrochemical performance of ACs were investigated systematically.The SEM,XRD and N_2 adsorption were used to characterize the surface properties and pore structure of ACs.The electrochemical performance of electrode materials was tested by constant current charge-discharge.The best condition of preparing AC with specific surface area of 2452 m~2 g~(-1) and total pore volume of 1.41 cm~3 g~(-1) is carbonization temperature of 700 ℃,activation temperature of 800 ℃ and activation ratio of 4.0.The specific capacitance of the electrode reached 213.33 F g~(-1) and it showed good electrochemical characteristics.
引文
[1]孟庆函,张睿.双电层电容器用中孔活性炭电极的电化学性能[J].功能材料,2002,33(6):628-630.
[2]Lota G,Centeno TA,Frackowiak E,Stoeckli F.Improvement of the structural and chemical properties of a commercial activated carbon for its application in electrochemical capacitors[J].Electrochimica Acta,2008,53(5):2210-2216.
[2]Lota G,Centeno TA,Frackowiak E,Stoeckli F.Improvement of the structural and chemical properties of a commercial activated carbon for its application in electrochemical capacitors[J].Electrochimica Acta,2008,53(5):2210-2216.