以对甲苯磺酸铁(Fe(TOS)3)为掺杂剂和氧化剂,采用化学聚合法制备了聚(3,4-乙撑二氧噻吩)/活性炭(PEDOT/AC)复合材料.通过SEM、FT-IR、TGA/DTG等方法分析了复合材料的微观形貌及结构特征.采用循环伏安、恒流充放电、交流阻抗等方法研究了不同配比的复合材料作为卷绕式超级电容器电极的电化学性能.结果表明,PEDOT/AC复合材料具有优良的热稳定性.当AC的含量为EDOT的20%时,复合电极的比容量提高到176.3 F/g,经过1 000次恒电流充放电后,容量保持率为83.6%,具有优异的循环稳定性.
Poly(3,4-ethylenedioxythiophene)/activated carbon (PEDOT/AC) composite was synthesizedby a chemical precipitation method with P-toluenesulfonic acid iron (Fe(TOs)3) as dopant and oxidant.Their morphology and structure were investigatedby SEM, FT-IR and TGA/DTG respectively.Electrodes for spiral wound supercapacitors with varying compositions of PEDOT and AC were characterized by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy to understand their electrochemical properties.The results show that PEDOT/AC composite has high thermal stability.When the mass ratio of AC and EDOT is 20%,the specific capacitance of composite electrodes estimated to be 176.3 F/g.Moreover, the capacitance retained 83.6% after 1 000 galvanostatic charge-discharge cycles, suggesting a high cycle stability of the composite electrodes.
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