详细信息

煤基活性炭电极材料的制备及电化学性能  ( EI收录)  

Preparation and electrochemical properties of coal-based activated carbons

文献类型:期刊文献

中文题名:煤基活性炭电极材料的制备及电化学性能

英文题名:Preparation and electrochemical properties of coal-based activated carbons

作者:张传祥[1,2];张睿[1];成果[1];谢应波[1];詹亮[1];乔文明[1];凌立成[1]

机构:[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

年份:2009

卷号:34

期号:2

起止页码:252

中文期刊名:煤炭学报

外文期刊名:Journal of China Coal Society

收录:CSTPCD;;EI(收录号:20091211966129);Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:国家自然科学基金资助项目(50672025);国家自然科学基金重点项目(50730003);上海市“登山行动计划”基础研究重点项目(06JC14018)

语种:中文

中文关键词:活性炭;超级电容器;比表面积;比电容

外文关键词:activated carbon; super capacitor; specific surface area; specific capacitance

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3059 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.
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/eoal ratio of 4:1 at 800 ℃for 1 h reaches 3 059 m^2/g, and its pore volume is 1.66 cm^3/g, in which the mesoporosity is 63%. The asrepared activated carbons exhibit large capacitances (322 F/g) and low leakage current (0.06 mA).

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