V2O5/DBSA-PANI复合材料的制备及电容性能研究

Study on preparation and capacitive performance of V_2O_5/DBSA-PANI

制备了V2O5/DBSA-PANI复合材料,用XRD、IR及SEM对材料进行了表征。结果表明,复合材料为片状,V2O5和DBSA-PANI之间有化学键形成;材料的恒流充放电性能测试结果表明,当电流密度为0.2～0.8mA,电压范围为-0.2～0.8V(vs.SCE),电解液为1mol/LKNO3溶液时,所得材料具有良好的电容特性,复合材料的比电容比单独的V2O5明显提高,而循环性能比单独的DBSA-PANI好。电压范围为-0.2～0.8V(vs.SCE),以2～10mV/s扫描速率进行循环伏安测试,该复合材料均表现出良好的赝电容性能。

V2O5/DBSA-PANI composite materials were prepared in the paper. The sample was characterized by means of XRD, IR and SEM. The results show that the shapes of V2O5 and V2O5/DBSA-PANI are layers and bonding roles existed between V2O5 and DBSA-PANI. Its electrochemical properties were determined by cyclic voltammetry and charge-discharge tests in aqueous electrolytes. At the current density range of 0.2-0.8 mA and voltage range of -0.2-0.8 V （vs.SCE） in 1 mol/L KNO3 electrolyte, V2O5/DBSA-PANI composite materials exhibits obvious capacitive performance. In the voltage range of -0.2-0.8 V （vs.SCE） cyclic voltammetry test, V2O5/DBSA-PANI composite materials exhibits good psudocapacitive property.