Facile Co-Electrodeposition Method for High-Performance Supercapacitor Based on Reduced Graphene Oxide/Polypyrrole Composite Film
Facile Co-Electrodeposition Method for High-Performance Supercapacitor Based on Reduced Graphene Oxide/Polypyrrole Composite Film
复制标题
基于还原氧化石墨烯/聚吡咯复合膜的高性能超级电容器的简易共电镀方法
DOI：
10.1021/acsami.7b03786
复制
发表时间：
2017-06-14
影响因子：
9.5
通讯作者：
Jiat, Dechang
中科院分区：
文献类型：
--
作者：
Chen, Junchen;Wang, Yaming;Jiat, Dechang
以十二烷基苯磺酸钠为前驱体，采用电沉积法制备了氧化石墨烯/聚吡咯(rGO/PPy)复合薄膜。在PPy薄膜中引入rGO形成了多孔结构，提高了薄膜的导电性，从而获得了优异的电化学性能。通过控制沉积时间和rGO浓度，rGO/PPy薄膜的最大面电容可达411 mF/cm(2)(0.2 mA/cm(2))，而优化的比电容高达361 fg(0.2 RNA/cm(2))。与纯PPy薄膜(电流密度为12 mA/cm(2))相比，所有复合膜均表现出优异的倍率性能(电流密度为12 mA/cm(2)时至少175F/g)。RGO/PPy复合材料表现出优异的循环稳定性，在2000次循环后保持了104%的初始容量，5000次循环后保持了80%。基于双电极固体超级电容器(SC)的rGO/PPy复合电极表现出良好的倍率性能、优异的循环稳定性以及222mF/cm(2)的高表面电容。基于rGO/PPy复合材料的固态平面SC显示出9.4mF/cm(2)的面电容，显示出制造微超级电容器的巨大潜力。
A facile co-electrodeposition method has been developed to fabricate reduced graphene oxide/polypyrrole (rGO/PPy) composite films, with sodium dodecyl benzene sulfonate as both a surfactant and supporting electrolyte in the precursor solution. The introduction of rGO into the PPy films forms porous structure and enhances the conductivity across the film, leading to superior electrochemical performance. By controlling the deposition time and rGO concentration,, the highest area capacitance can Teach 411 mF/cm(2) (0.2 mA/cm(2)) for rGO/PPy films, whereas optimized specific capacitance is as high as,361 Fig (0.2 rnA/cm(2)). All of the composite films exhibit excellent rate capability (at least 175 F/g at the Current density of 12 mA/cm(2)) compared with pure PPy film (only 12 F/g at the current density of 12 mA/cm(2)). The rGO/PPy composite exhibits excellent cycling stability that maintains 104% of its initial capacitance after cycling for 2000 cycles and 80% for 5000 cycles. The two-electrode solid-state supercapacitor (SC) based rGO/PPy composite electrodes demonstrates good rate performance, excellent, cycling stability, as well as a high area capacitance of 222 mF/cm(2). The solid-state planar SC based on the rGO/PPy composite exhibits an area capacitance of 9.4 mF/cm(2), demonstrating great potential for fabrication of microsupercapacitors.