一种用于合成超级电容器用介孔聚吡咯/MnO复合材料的原位氧化聚合法。
An In Situ Oxidative Polymerization Method to Synthesize Mesoporous Polypyrrole/MnO Composites for Supercapacitors.
作者信息
Song Yan, Dong Yangbo, Li Wei, Tan Zhengwen, Ma Pingfei, Wang Guibin, Li Xuefeng
机构信息
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
出版信息
Molecules. 2024 Dec 26;30(1):45. doi: 10.3390/molecules30010045.
Manganese dioxide (MnO) shows great potential in the field of electrochemical performance. But its poor conductivity, easy dissolution in electrolytes and undesirable ionic accessibility hinder its application. The construction of mesoporous polypyrrole/manganese dioxide (PPy/MnO) composites can effectively alleviate these problems. Herein, an in situ oxidative polymerization method is developed to synthesize mesoporous PPy/MnO composites. In this method, Pluronic P123 and pyrrole monomers are co-assembled on the surface of MnO. MnO is used as an oxidation initiator to polymerize pyrrole under acidic conditions and as a substrate for a uniform coating of PPy. The obtained composites, with a large electrochemical effective area, more reaction sites and good structural stability have better capacitor performance (182.8 F g), higher than MnO (116.6 F g) at the same current density. This method provides a meaningful reference for the development of mesoporous PPy/MnO supercapacitor materials.
二氧化锰（MnO）在电化学性能领域展现出巨大潜力。但其导电性差、易溶于电解质以及不理想的离子可及性阻碍了其应用。介孔聚吡咯/二氧化锰（PPy/MnO）复合材料的构建能够有效缓解这些问题。在此，开发了一种原位氧化聚合法来合成介孔PPy/MnO复合材料。在该方法中，Pluronic P123和吡咯单体在MnO表面共组装。MnO用作氧化引发剂在酸性条件下使吡咯聚合，并作为PPy均匀包覆的基底。所制备的复合材料具有大的电化学有效面积、更多的反应位点以及良好的结构稳定性，具有更好的电容性能（182.8 F g），在相同电流密度下高于MnO（116.6 F g）。该方法为介孔PPy/MnO超级电容器材料的开发提供了有意义的参考。
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