申请人:Imam Abdulrahman Bin Faisal University
公开号:US11328877B2
公开(公告)日:2022-05-10
A poly(vinylphosphonic acid) (PVPA)−(NH4)2MoO4), gel polymer electrolyte can be prepared by incorporating redox-mediated Mo, or similar metal, into a PVPA, or similar polymer, matrix. Gel polymer electrolytes including PVPA/MoX, x representing the percent fraction Mo in PVPA, can be used to make supercapacitors including active carbon electrodes. The electrolytes can be in gel form, bendable and stretchable in a device. Devices including this gel electrolyte can have a specific capacitance (Cs) of 1276 F/g, i.e., a more than 50-fold increase relative to a PVPA system without Mo. A PVPA/Mo10 supercapacitor can have an energy density of 180.2 Wh/kg at power density of 500 W/kg, and devices with this hydrogel structure may maintain 85+% of their initial capacitance performance after 2300 charge-discharge cycles.
通过在 PVPA 或类似聚合物基质中加入氧化还原介导的钼或类似金属,可制备聚(乙烯基膦酸)(PVPA)-(NH4)2MoO4 凝胶聚合物电解质。凝胶聚合物电解质包括 PVPA/MoX(x 代表 PVPA 中钼的百分比),可用于制造包括活性碳电极在内的超级电容器。电解质可呈凝胶状,在设备中可弯曲和拉伸。包含这种凝胶电解质的设备的比电容(Cs)可达到 1276 F/g,即与不含 Mo 的 PVPA 系统相比增加了 50 倍以上。当功率密度为 500 W/kg 时,PVPA/Mo10 超级电容器的能量密度可达 180.2 Wh/kg,而采用这种水凝胶结构的设备在经过 2300 次充放电循环后,仍可保持 85% 以上的初始电容性能。