MnO_2纳米簇修饰PANi复合材料的制备及其超级电容性能

Preparation and Capacitive Performance of MnO_2 Nanoclusters Decorated Polyaniline

超级电容器作为新型化学储能设备之一,具有充放电效率高、使用期限长、节省资源及绿色无污染等特征。超级电容器材料是决定其性能优良的核心部分,研究高性能电容材料对当前绿色能源的发展具有重要的意义。聚苯胺(PANi)由于具有价格低、加工简单、化学稳定性高等优异特点,是当前电容材料研究最为广泛的导电高分子之一。相对于无机的二氧化锰(MnO_2),PANi的电容性能相对较低,然而MnO_2电子传输性能较差。为了能够实现PANi和MnO_2的优势互补,本文利用化学方法制备的新鲜PANi,直接与高锰酸钾反应,MnO_2纳米簇修饰的PANi复合材料,从而实现提高的电容性能。

Supercapacitor, as a new energy storage device, shows a high charge discharge efficiency, long service life,and pollution-free characteristics. Electrode material is one of the most key parts for a good supercapacitor. It is significant for the development of supercapacitor to investigate the high capacitive performance. Polyaniline（PANi） is one of excellent conducting polymers and has many advantages such as low price, simple process, and good environment stability. Compared to Manganese dioxide（MnO_2）, PANi shows a relatively low capacitive performance. However, MnO_2 has a poor electron transfer property. In this paper, PANi was synthesized by a simple chemical synthesis method. The as-prepared PANi is able to reduce potassium permanganate and yield MnO_2 nanoclusters, which led to a better capacitive performance than a single PANi or MnO_2 material.