2024 - Sustainable Industrial Processing Summit
SIPS 2024 Volume 14. Intl. Symp on Advanced Materials, Manufacturing, Magnesium and Aluminum
| Editors: | F. Kongoli, F. Marquis, N. Chikhradze, T. Prikhna, E. Suhir, Y. Yang |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2024 |
| Pages: | 258 pages |
| ISBN: | 978-1-998384-30-3 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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UPCYCLING OF POST-CONSUMER PET BOTTLES INTO P-DOPED ANODE MATERIALS FOR HIGH-PERFORMANCE LITHIUM-ION BATTERIES
DOSSYM YESKOZHA1; Arailym Nurpeissova2; Aisha Zhanaikhan1; Aizhuz Sarsengaliyeva1;1INSTITUTE OF BATTERIES LLP, Astana, Kazakhstan; 2INSTITUTE OF BATTERIES LLC, Nur-Sultan, Kazakhstan;
Type of Paper: Regular
Id Paper: 434
Topic: 43
Abstract:
The proper utilization and upcycling of plastic waste are essential for mitigating environmental damage, optimizing resource use, and advancing a circular economy [1]. Phosphorus doping of carbon materials introduces a high density of phosphorus-containing active groups and expands interlayer distances, which significantly boosts the electrochemical performance of the anode material [2].
In this study, we upcycled waste PET into phosphorus-doped hard carbon (P-HC) through a single-step pyrolysis process with orthophosphoric acid (H3PO4), aiming to enhance the electrochemical properties of the resultant carbon. The synthesized P-HC was characterized using Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA-DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) to elucidate its structural and thermal properties.
Electrochemical characterizations revealed that the P-HC anodes exhibit superior lithium storage capabilities, including high specific capacity and excellent rate capability (492 mAhg-1 at 0.1 Ag-1 and 131 mAhg-1 at 3.5 Ag-1, respectively), significantly outperforming non-doped PET-derived carbon. This enhancement is attributed to the improved electrical conductivity and structural stability imparted by phosphorus doping [3]. The P-HC anodes retained a high specific capacity after numerous cycles, demonstrating their potential for long-term application in LIBs.
This study presents a dual solution to plastic pollution and energy storage challenges by converting PET waste into high-performance anode materials for next-generation LIBs. This sustainable approach not only mitigates environmental impact but also contributes to the advancement of energy storage technologies.