Abstract
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.
Original language | English |
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Article number | 105831 |
Number of pages | 10 |
Journal | Journal of Analytical and Applied Pyrolysis |
Volume | 169 |
Early online date | 14 Dec 2022 |
DOIs | |
Publication status | Published - 19 Dec 2022 |
Bibliographical note
Funding Information:This project has received funding from the Science and Technology Exchange Project of China Ministry of Science and Technology ( 2021-12-2 ) and Education Cooperation Project between China and Central Eastern European Countries ( 2021086 ) and Shaanxi Provincial Natural Science Foundation Research Program Shaanxi Coal Joint Funding ( 2019JLZ-12 ). We also thank the support of Instrument Analysis Center of Xi'an Jiaotong University . And, many thanks to the CSC sponsorship at Xi’an Jiaotong University.
Publisher Copyright:
© 2022 Elsevier B.V.
Keywords
- Carbon nanomaterial
- Energy storage
- Nickel foam
- Pyrolysis
- Waste plastics