模板法制备聚苯胺空心微球材料及其电化学性能

Preparation of polyaniline hollow micro-sphere materials with template method and its electrochemical properties

运用模板法,以聚苯乙烯(PS)胶体粒子为微球核,使苯胺单体吸附于PS胶体粒子表面,然后利用原位的化学氧化聚合,制备出聚苯乙烯/聚苯胺(PS/PANI)核壳材料。然后再将PS微球核溶解,最终得到PANI空心微球材料。采用傅立叶变换红外光谱、扫描电子显微镜对所得材料进行成分和形貌的分析。利用循环伏安法、恒流充放电测试法和循环使用测试等电化学手段来表征所得材料的电化学性能。研究结果表明,所得PANI空心微球材料的比容量可达到116F/g(有机电解液),显著高于用同样化学氧化聚合法所制备的PANI颗粒的比容量(65F/g),显示出良好的电化学应用前景。

The polystyrene（PS） micro-sphere was used as the template to prepare PS/polyaniline（PANI） core-shell materials.The aniline monomers were first absorbed on the surface of the PS micro-sphere,and then were polymerized to PANI by the chemical oxygenation method.As this,the PS/PANI materials were obtained.After that,the PS micro-spheres were removed by dissolution and the PANI hollow micro-spheres were obtained.The obtained materials were characterized by the Fourier transform infrared spectroscope,scanning electron microscope and transmission electron microscope.At the same time,the cyclic voltammogram,galvanostatic charging/discharging testing and cycle life testing were used to characterize the obtained material electrochemical performances.The results showed that the specific capacitance of the obtained PANI hollow micro-sphere material could be up to 116F/g（in organic electrolyte）,which was greatly better than that of the normal PANI material by the same chemical oxygenation method（65F/g）,indicating the PANI hollow micro-sphere material had excellent electrochemical application foreground.