聚3-(4-氟苯基)噻吩/碳化聚丙烯腈泡沫复合电极的电化学研究  

Electrochemical Study on Poly-3-(4-fluorophenyl)thiophene/Carbonized Polyacrylonitrile Foam Composite Electrodes

作　　者：张庆武[1] 周啸[1] 

机构地区：[1]清华大学化工系高分子研究所,北京100084

出　　处：《高等学校化学学报》2004年第4期781-783,共3页Chemical Journal of Chinese Universities

基　　金：湘怡中元科技股份有限公司资助

摘　　要：The carbon foams were prepared by carbonization of polyacrylonitrile membrane with carbon paper. After modified by CO 2, the BET specific surface area of the carbon foam increased from 14.3 to 290.2 m 2/g and there are more electrical double layer capacitance than that in the unmodified carbon foams. Composite electrodes were fabricated by electrochemical polymerization of 3-(4-fluorophenyl)thiophene on carbon foams in 0.2 mol/L tetraethylammonium tetrafluoroborate in acetonitrile solution. Cyclic voltammetry of PFPT/carbon foam electrodes show that they have two type of capacitance: one is quasicapacitance originated from PFPT doping/undoping in electrolyte solution; the other is electrical double layer capacitance belonging to high specific area of the composite electrodes. The performance of electrochemical capacitors, such as energy density, would be improved by adopting this carbon foam with a high specific area as electrodes in polymerization of conducting polymers.The carbon foams were prepared by carbonization of polyacrylonitrile membrane with carbon paper. After modified by CO 2, the BET specific surface area of the carbon foam increased from 14.3 to 290.2 m 2/g and there are more electrical double layer capacitance than that in the unmodified carbon foams. Composite electrodes were fabricated by electrochemical polymerization of 3-(4-fluorophenyl)thiophene on carbon foams in 0.2 mol/L tetraethylammonium tetrafluoroborate in acetonitrile solution. Cyclic voltammetry of PFPT/carbon foam electrodes show that they have two type of capacitance: one is quasicapacitance originated from PFPT doping/undoping in electrolyte solution; the other is electrical double layer capacitance belonging to high specific area of the composite electrodes. The performance of electrochemical capacitors, such as energy density, would be improved by adopting this carbon foam with a high specific area as electrodes in polymerization of conducting polymers.

关 键 词：导电高分子 聚3-(4-氟苯基)噻吩 电化学电容器 聚丙烯腈微孔膜 复合电极 电化学特性 

分 类 号：TM242[一般工业技术—材料科学与工程] O631.23[电气工程—电工理论与新技术]