论文标题
使用地球上丰富的材料抑制水性超级电容器的自我释放
Suppressed self-discharge of an aqueous supercapacitor using Earth-abundant materials
论文作者
论文摘要
超级电容器（又名静电双层电容器-EDLC）提供了出色的功率存储能力和动力学，但会受到快速自我释放的影响。我们将一个沸石框架引入了活跃的电容器电极，其目的是定制自由解吸能，从而定制超级电容器的自放电速率。低成本的碳质材料和台式生产方法用于创建超级电容器电极，其特异性电容为17.25 f g $^{ - 1} $，库仑效率为100％，并在24小时内由24小时的24小时负担率保留了24小时，该效率超过24小时，由电静态电荷/排放曲线测量。与没有沸石涂层的电极相比，此保留率是$ \ sim $ 350％的增强。
Supercapacitors (aka electrostatic double-layer capacitors -- EDLCs) offer excellent power storage capacity and kinetics, but suffer under rapid self-discharge. We introduced a zeolite framework into the active capacitor electrode, with the goal to tailor the free desorption energy and thus the self-discharge rate of supercapacitors. Low-cost carbonaceous materials and benchtop production methods were used to create supercapacitor electrodes with a measured specific capacitance of 17.25 F g$^{-1}$, a coulombic efficiency of 100%, and charge retention of over 25% over 24 hours determined by galvanostatic charge/discharge curve measurements. This charge retention was an enhancement of $\sim$350% compared with electrodes without zeolite coating.
