Onwucha, Chizoom N. and Ehi-Eromosele, Cyril O. and Ajayi, O.S and Siyanbola, T. O. and Ajanaku, K. O. (2022) Valorising Waste PET Bottles into Carbon Anodes for Li-ion Battery using Ionothermal Carbonisation: A Preliminary Study. Research Square.
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Abstract
Waste PET bottles (WPB) is fast becoming an environmental nuisance and its valorization to carbon anode could be a sustainable method to manage this waste and also develop cheap and highperformance carbon materials for Li-ion batteries (LIBs). Carbonaceous materials derived from WPB were prepared using an ionothermal carbonization (ITC) method in choline chloride urea-deep eutectic solvent system. The ITC-derived materials were subsequently annealed in air to obtain carbonaceous materials. The ITC-derived carbon displayed ultra-high nitrogen doping but lesser carbonization and graphitic ordering compared to the reference carbon material obtained using hydrothermal carbonization (HTC). Therefore, higher temperature annealing/pyrolysis was recommended for the ITC-derived carbon. The HTC-derived carbon was investigated as anode material in LIB with promising electrochemical performance. The LIB displayed stable reversible capacity of about 130 mAh/g at a current density of 0.1 mA/g after 20 cycles and an increasing Coulombic efficiency that reached 98% after the 50 th cycle. This work shows that a facile and sustainable synthesis method could be used to produce cheap activated carbons with potential applications in energy storage systems such as LIBs.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Waste PET bottles, ionothermal carbonization, Li-ion batteries, deep eutectic solvent, activated carbon |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | AKINWUMI |
| Date Deposited: | 09 Nov 2022 11:35 |
| Last Modified: | 08 Mar 2023 08:09 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/16422 |
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