中文摘要：

以膨胀石墨作为基体电极,采用循环伏安（CV）法制备了聚对苯二酚（PHQ）修饰膨胀石墨电极。电化学和扫描电子显微镜（SEM）的分析结果均表明：在0.01mol/L对苯二酚（HQ,pH2.0）中,以0.1mol/LNaCl为支持电解质,可通过CV法成功制备电化学性能良好的PHQ修饰膨胀石墨电极,PHQ的电化学聚合机理随聚合体系pH值的变化而不同。当pH≥12.0时,PHQ不能在膨胀石墨表面发生电化学聚合。PHQ在pH2.0～12.0范围内都具有电化学活性,其随着pH值的增大而降低。

英文摘要：

The electrochemical polymerization of hydroquinone（HQ）on expanded graphite substrate has been carried out using repeated potential cycling between-0.5 and 1.5 V（versus SCE）.The results of both electrochemistry and SEM indicate that the electropolymerization of poly（hydroquinone）can be successfully performed by cyclic voltammetry in the electrolytic solution consisted of 0.01 mol/L HQ,0.1 mol/L NaCl at pH 2.0. Hydroquinone has different polymerization mechanisms at different pH values,and it can not be polymerized at pH≥12.0.Poly（hydroquinone）has an electrochemical activity in a wide range of pH,and the electrochemical activity decreases with the increase of pH of the solution from 2 to 12.The poly（hydroquinone）modified expanded graphite is supposed to be an ideal electrode material for super capacitor and all-polymer batteries.