涂覆热分解与电化学聚合法制备聚苯胺/RuO2复合电极材料

通过涂覆热分解法并结合电化学聚合法制备得到聚苯胺(PANI)/RuO₂电极材料。使用涂覆热分解法于260℃热处理3 h制备RuO₂薄膜, 通过电化学聚合法将PANI粒子沉积在RuO₂薄膜上, 并在80℃加热12 h。采用XRD分析PANI/RuO₂复合物晶相, 采用SEM观察PANI/RuO₂复合电极材料的形貌变化。利用循环伏安及恒流充放电测试了该复合电极的电化学性能。结果表明, PANI沉积时间为25 min, 该PANI/RuO₂复合电极的最大电容量为9.72 F, 比电容为452 F·g^-1, 充放电曲线体现了较低的电压降、等效串联电阻及良好的充放电性能。经1000次循环伏安后, 其比电容损失约为11%。

Polyaniline/RuO2 composite electrode prepared by coating thermal decomposition and electrochemistry polymerization procedures

Polyaniline(PANI)/RuO2 composite electrodes were prepared by coating thermal decomposition and electrochemistry polymerization procedures.RuO2 film was synthesized by coating thermal decomposition method at 260 ℃ for 3 h,and PANI particles were deposited on RuO2 films and dried at 80 ℃ for 12 h.The formation of the amorphous phase of PANI/RuO2 composite was studied by XRD.Morphologic variations of the composite electrodes were established by SEM.Electrochemical performances of the composite electrodes were measured by cyclic voltammetry(CV) and galvanostatic charge-discharge.The results show that when the deposition time of PANI is 25 min,the maximum capacitance and the specific capacitance of PANI/RuO2 composite electrode is 9.72 F and 452 F·g-1 respectively.Charge-discharge curves of the composite electrodes illustrate low potential drops,internal resistances and good charge-discharge properties.Approximately 11% loss of capacitance is observed after 1000 CV cycles.