Yan Chaojing, Jin Mengyuan, Pan Xinxin, Ma Longli, Ma Xiaohua
Department of Materials Science, Fudan University Shanghai 200433 China
RSC Adv. 2020 Mar 4;10(16):9299-9308. doi: 10.1039/c9ra10701k. eCollection 2020 Mar 2.
A simple polymerization process assisted with UV light for preparing a novel flexible polyelectrolyte-based gel polymer electrolyte (PGPE) is reported. Due to the existence of charged groups in the polyelectrolyte matrix, the PGPE exhibits favorable mechanical strength and excellent ionic conductivity (66.8 mS cm at 25 °C). In addition, the all-solid-state supercapacitor fabricated with a PGPE membrane and activated carbon electrodes shows outstanding electrochemical performance. The specific capacitance of the PGPE supercapacitor is 64.92 F g at 1 A g, and the device shows a maximum energy density of 13.26 W h kg and a maximum power density of 2.26 kW kg. After 10 000 cycles at a current density of 2 A g, the all-solid-state supercapacitor with PGPE reveals a capacitance retention of 94.63%. Furthermore, the specific capacitance and charge-discharge behaviors of the flexible PGPE device hardly change with the bending states.
报道了一种借助紫外光辅助的简单聚合过程，用于制备新型柔性聚电解质基凝胶聚合物电解质（PGPE）。由于聚电解质基质中存在带电基团，PGPE表现出良好的机械强度和优异的离子电导率（25℃时为66.8 mS/cm）。此外，用PGPE膜和活性炭电极制备的全固态超级电容器显示出出色的电化学性能。PGPE超级电容器在1 A/g时的比电容为64.92 F/g，该器件的最大能量密度为13.26 W h/kg，最大功率密度为2.26 kW/kg。在2 A/g的电流密度下循环10000次后，具有PGPE的全固态超级电容器的电容保持率为94.63%。此外，柔性PGPE器件的比电容和充放电行为几乎不随弯曲状态而变化。
