材料科学
镍
热解
超级电容器
化学工程
碳纳米泡沫
催化作用
电极
循环伏安法
碳纤维
电解质
电容
电化学
多孔性
复合材料
冶金
有机化学
复合数
化学
物理化学
工程类
作者
Ayesha Tariq Sipra,Lianhang Xu,Cui Quan,Jiawei Wang,Ningbo Gao
标识
DOI:10.1016/j.jaap.2022.105831
摘要
The pyrolytic liquid and gas products are extensively analyzed for practical applications, but, few applications exist for solid product from waste plastics pyrolysis. This study investigates energy storage potential of waste plastics-derived carbon nano-materials (CNMs), pyrolyzed directly on nickel foam (NF) coated with nickel alumina catalyst, in a two-stage fixed bed reactor. Effect of increasing nickel to aluminum molar ratio (0.05, 0.1, 0.2) in energy storage capacity is studied. Galvanostatic charge-discharge curves, at 0.125 A g−1, show highest specific capacitance of 153.75 F g−1 for 0.1 molar ratio. The reason for such high performance is mainly because of a) greater metal-support interaction by using NF substrate, b) formation of CNMs according to base-growth mechanism, providing metal free surface at the top, and c) the presence of equal amounts of disordered and ordered carbons, resulting in meso- and micro-porous structures, providing high electrolyte availability at the electrode surface. The retained rectangle shape of cyclic voltammetry (CV) curve after 5000 cycles, with 98.5 % capacitance retention, also exhibits stability and durability of produced electrode. Though the fabricated electrode involved no post-treatment, yet, it showed higher performance than commercial CNMs. Therefore, this study open new ways to fabricate environment friendly and economically effective supercapacitors.
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