Xu Shuzhen, Hao Huilian, Chen Yinan, Li Wenyao, Shen Wenzhong, Shearing Paul R, Brett Dan J L, He Guanjie
College of Material Engineering, Shanghai University of Engineering Science 333 Long Teng Road, Shanghai 201620, People's Republic of China.
Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom.
Nanotechnology. 2021 May 5;32(30). doi: 10.1088/1361-6528/abf9c4.
Polypyrrole (PPy) has high electrochemical activity and low cost, so it has great application prospects in wearable supercapacitors. Herein, we have successfully prepared polypyrrole/reduced graphene oxide (PPy/rGO) nanocomposite cotton fabric (NCF) by chemical polymerization, which exhibits splendid electrochemical performance compared with the individual. The addition of rGO can block the deformation of PPy caused by the expansion and contraction. The as-prepared PPy-0.5/rGO NCF electrode exhibits the brilliant specific capacitance (9300 mF cmat 1 mA cm) and the capacitance retention with 94.47% after 10 000 cycles. At the same time, the superior capacitance stability under different bending conditions and reuse capability have been achieved. All-solid-state supercapacitor has high energy density of 167Wh cmwith a power density of 1.20 mW cm. Therefore, the PPy-0.5/rGO NCF electrode has a broad application prospect in high-performance flexible supercapacitor fabric electrode.
聚吡咯（PPy）具有高电化学活性和低成本，因此在可穿戴超级电容器中具有巨大的应用前景。在此，我们通过化学聚合成功制备了聚吡咯/还原氧化石墨烯（PPy/rGO）纳米复合棉织物（NCF），与单独的材料相比，其表现出优异的电化学性能。rGO的加入可以阻止PPy因膨胀和收缩而引起的变形。所制备的PPy-0.5/rGO NCF电极表现出出色的比电容（在1 mA cm时为9300 mF/cm²），并且在10000次循环后电容保持率为94.47%。同时，在不同弯曲条件下实现了优异的电容稳定性和可重复使用性。全固态超级电容器具有167μWh/cm³的高能量密度和1.20 mW/cm²的功率密度。因此，PPy-0.5/rGO NCF电极在高性能柔性超级电容器织物电极方面具有广阔的应用前景。
