Cai Chaoyue, Fu Jialong, Zhang Chengyan, Wang Cheng, Sun Rui, Guo Shufang, Zhang Fan, Wang Mingyan, Liu Yuqing, Chen Jun
Department of Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University Lianyungang 222005 China.
RSC Adv. 2020 Aug 6;10(49):29090-29099. doi: 10.1039/d0ra05199c. eCollection 2020 Aug 5.
A flexible and free-standing 3D reduced graphene oxide@polypyrrole-polyethylene glycol (RGO@PPy-PEG) foam was developed for wearable supercapacitors. The device was fabricated sequentially, beginning with the electrodeposition of PPy in the presence of a PEG-borate on a sacrificial Ni foam template, followed by a subsequent GO wrapping and chemical reduction process. The 3D RGO@PPy-PEG foam electrode showed excellent electrochemical properties with a large specific capacitance of 415 F g and excellent long-term stability (96% capacitance retention after 8000 charge-discharge cycles) in a three electrode configuration. An assembled (two-electrode configuration) symmetric supercapacitor using RGO@PPy-PEG electrodes exhibited a remarkable specific capacitance of 1019 mF cm at 2 mV s and 95% capacitance retention over 4000 cycles. The device exhibits extraordinary mechanical flexibility and showed negligable capacitance loss during or after 1000 bending cycles, highlighting its great potential in wearable energy devices.
一种用于可穿戴超级电容器的柔性自支撑三维还原氧化石墨烯@聚吡咯-聚乙二醇（RGO@PPy-PEG）泡沫被开发出来。该器件是依次制造的，首先在牺牲性泡沫镍模板上，于聚乙二醇-硼酸盐存在的情况下电沉积聚吡咯，随后进行氧化石墨烯包裹和化学还原过程。三维RGO@PPy-PEG泡沫电极在三电极配置下表现出优异的电化学性能，具有415 F g的大比电容和出色的长期稳定性（8000次充放电循环后电容保持率为96%）。使用RGO@PPy-PEG电极组装的（两电极配置）对称超级电容器在2 mV s时表现出1019 mF cm的显著比电容，在4000次循环中电容保持率为95%。该器件具有非凡的机械柔韧性，在1000次弯曲循环期间或之后电容损失可忽略不计，突出了其在可穿戴能源设备中的巨大潜力。
