| Title |
Valorizing waste PET bottles into Li-ion battery anodes using ionothermal carbonization |
| ID_Doc |
8844 |
| Authors |
Onwucha, CN; Ehi-Eromosele, CO; Ajayi, SO; Siyanbola, TO; Ajanaku, KO |
| Title |
Valorizing waste PET bottles into Li-ion battery anodes using ionothermal carbonization |
| Year |
2022 |
| Published |
Nanomaterials And Energy, 11.0, 3-4 |
| DOI |
10.1680/jnaen.22.00047 |
| Abstract |
Waste poly(ethylene terephthalate) (PET) bottles (WPBs) are fast becoming an environmental nuisance, and their valorization to carbon anodes could be a sustainable method to manage this waste and also develop cheap and high-performance carbon materials for lithium (Li)-ion batteries (LIBs). Carbonaceous materials derived from WPBs were prepared using an ionothermal carbonization (ITC) method in a 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 less carbonization and graphitic ordering compared with the equivalent 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 an anode material for an LIB with promising electrochemical performance. The LIB displayed a stable reversible capacity of about 130 mAh/g at a current density of 0.1 A/g after 20 cycles and an increasing coulombic efficiency that reached 98% after the 50th cycle. This work shows that a facile and sustainable synthesis method can be used to produce PET-derived activated carbon with potential applications in energy-storage systems such as LIBs. |
| Author Keywords |
activated carbon; circular economy; deep eutectic solvent; energy; Li-ion batteries; UN SDG 7; Affordable and clean energy; waste PET bottles |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Emerging Sources Citation Index (ESCI) |
| EID |
WOS:000981266000001 |
| WoS Category |
Materials Science, Multidisciplinary |
| Research Area |
Materials Science |
| PDF |
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