酚醛基活性炭布的制备及电化学性能研究

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材料工程 ›› 2011, Vol. 0 ›› Issue (10) : 1-4.

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酚醛基活性炭布的制备及电化学性能研究

耿煜^1,2, 宋燕¹, 钟明^1,2, 李鹏^1,2, 郭全贵¹, 刘朗¹

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Investigation of Preparation and Electrochemical Performance of Phenolic Resin Based Activated Carbon Cloth

GENG Yu^1,2, SONG Yan¹, ZHONG Ming^1,2, LI Peng^1,2, GUO Quan-gui¹, LIU Lang¹

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摘要

以实验室自制的酚醛基纤维布为原料,以二氧化碳为活化剂制备了系列酚醛基活性炭布(Activated Carbon Cloths,ACCs),利用低温N₂(77K)吸附法测定了所制活性炭布的孔结构,并将所制得活性炭布用做超级电容器电极材料,采用恒流充放电法和交流阻抗技术考察了所制模拟电容器的电化学性能(电解液:1M(CH₂CH₃)₃CH₃NBF₄/PC)。结果表明:随着活性炭布的比表面积的增大,比电容也随之增大,其中ACC4样品在50mA·g^-1的电流密度下达到135F·g^-1。随着电流密度的增大,微孔对比电容的贡献下降而中孔的贡献增大,说明中孔有利于提高活性炭布的功率特性。随活化程度的加深,活性炭布的导电性下降,等效串联电阻增大。

Abstract

Phenolic resin based Activated Carbon Cloths(ACCs) were prepared by carbon dioxide activation treatment,and were used as electrodes of supercapacitors.The pore structure and the electrochemical properties of the resultant ACCs were investigated by means of nitrogen adsorption,AC impedance and constant current discharge techniques.The relationship of pore structure and the electrochemical performance in 1M(CH₂CH₃)3CH₃NBF₄/PC were discussed in details.Results showed that the specific capacitance of the samples increase with the BET surface area,and the specific capacitance of ACC4 reached 135 F·g^-1 at current density of 50mA·g^-1.Besides,the contribution to the specific capacitance from micropores decreases while that of from mesopores increases with the increase of the current density.The conductivity of the sample decreased and the ESR increased with the enhancement of activation degree.

导出引用

耿煜, 宋燕, 钟明, 李鹏, 郭全贵, 刘朗. 酚醛基活性炭布的制备及电化学性能研究[J]. 材料工程, 2011, 0(10): 1-4

GENG Yu, SONG Yan, ZHONG Ming, LI Peng, GUO Quan-gui, LIU Lang. Investigation of Preparation and Electrochemical Performance of Phenolic Resin Based Activated Carbon Cloth[J]. Journal of Materials Engineering, 2011, 0(10): 1-4

中图分类号： O646

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