沥青基活性炭制备及其电化学性能研究 study on activated carbon from pitches and their electrochemical performance.pdfVIP

沥青基活性炭制备及其电化学性能研究 王艳素，王成扬，郭春雨 (天津大学化丁学院绿色合成与转化教育部重点实验室，灭津300072) 摘要：选物理性能相近的各向同性沥青和各向异性沥青作为前驱体．在相同条件下进行KOH化学活化制得沥青基活 驱体结构的差异对活性炭产品微结构参数的影响，并将其作为电极材料，以1mol／L(Et)。NBF。作为电解液组装成有机 双电层电容器，通过恒流充放电、循环伏安曲线和交流阻抗测试其电化学性能，发现各向同性沥青活化后具有较好的 孔结构及较高的比电容【173．9 F／g)、较低的内阻和较好的功率特性。 关键词：沥青：活性炭：双电层电容器；电化学性能 中图分类号：TM53文献标识码：A文章编号：1002—087 X(2007)10—0800—04 and onactivatedcarbonfrom their Study pitches performance WANGYah—sil．WANG Cheng—yang，GUOChurl—yu Chemical ofState Technology (KeyLabozatoryforGrccn 300072，ChinaJ TianjinUniversi机Tianjin and wffhsimilar characteristicswerechosentobe for Abstract：Isotropicpitch anisotmpicpitch physical precursors activatedcarbonsChemicalactivationsatsameconditionswerecarriedoutandtheeffectsofmicrostructureof oncharacteristicsofactivatedcarbonswerediscussed and Electric precursors byXRD。SEMN2adsorption wasmade theactivatedastheelectrodematerialsand1 double—layercapacitor byusing pitches the Aconstantcurrent andAC wereusedto test，cyclicvoltammetry electrolyte charge-discharge impadence theirelectrochemical Theresultsobtainedconfirmthatthe activatedhas investigate performance isotropic pitch better structureandbetter f1739 seriesresistanceandbelter pore specificcapacitanceF／g)．10wer