Moyseowicz Adam, Pająk Krzysztof, Gajewska Katarzyna, Gryglewicz Grażyna
Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Gdańska 7/9, 50-344 Wrocław, Poland.
Materials (Basel). 2020 May 15;13(10):2273. doi: 10.3390/ma13102273.
Herein, we propose hydrothermal treatment as a facile and environmentally friendly approach for the synthesis of polypyrrole/reduced graphene oxide hybrids. A series of self-assembled hybrid materials with different component mass ratios of conductive polymer to graphene oxide was prepared. The morphology, porous structure, chemical composition and electrochemical performance of the synthesized hybrids as electrode materials for supercapacitors were investigated. Nitrogen sorption analysis at 77 K revealed significant changes in the textural development of the synthesized materials, presenting specific surface areas ranging from 25 to 199 m g. The combination of the pseudocapacitive polypyrrole and robust graphene material resulted in hybrids with excellent electrochemical properties, which achieved specific capacitances as high as 198 F g at a current density of 20 A g and retained up to 92% of their initial capacitance after 3000 charge-discharge cycles. We found that a suitable morphology and chemical composition are key factors that determine the electrochemical properties of polypyrrole/reduced graphene oxide hybrid materials.
在此，我们提出水热处理是一种简便且环境友好的合成聚吡咯/还原氧化石墨烯杂化物的方法。制备了一系列具有不同导电聚合物与氧化石墨烯组分质量比的自组装杂化材料。研究了合成的杂化物作为超级电容器电极材料的形貌、多孔结构、化学成分和电化学性能。77K下的氮吸附分析表明合成材料的织构发展有显著变化，比表面积范围为25至199m²/g。赝电容性聚吡咯与坚固的石墨烯材料相结合，产生了具有优异电化学性能的杂化物，在电流密度为20A/g时实现了高达198F/g的比电容，并且在3000次充放电循环后仍保留其初始电容的92%。我们发现合适的形貌和化学成分是决定聚吡咯/还原氧化石墨烯杂化材料电化学性能的关键因素。
