2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 10. Intl. Symp on Energy, Carbon, Battery, Biochar and Agroforestry
| Editors: | F. Kongoli, S.M. Atnaw, H. Dodds, T. Turna, J. Antrekowitsch, G. Hanke, K. Aifantis, Z. Bakenov, C. Capiglia, V. Kumar, A.U.H. Qurashi, A. Tressaud, R. Yazami, M. Giorcelli |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2025 |
| Pages: | 316 pages |
| ISBN: | 978-1-998384-56-3 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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PHOSPHORUS-DOPED HARD CARBON DERIVED FROM RECYCLED PET BOTTLES AS A HIGH-PERFORMANCE ANODE MATERIAL FOR LITHIUM-ION BATTERIES
Arailym Nurpeissova1;1INSTITUTE OF BATTERIES LLC, Nur-Sultan, Kazakhstan;
Type of Paper: Regular
Id Paper: 136
Topic: 14
Abstract:
Plastic pollution poses a significant environmental threat, with single-use plastics like PET bottles playing a major role in the degradation of ecosystems. Conventional recycling methods, although aimed at reducing this impact, often lead to the creation of microplastics—tiny, persistent particles that endanger both biodiversity and human health. In contrast, upcycling offers a more sustainable and innovative alternative by converting plastic waste into high-value materials, thereby avoiding microplastic formation altogether. This approach not only mitigates environmental harm but also contributes to technological progress, particularly in areas such as energy storage.
In this study, waste PET bottles were upcycled into phosphorus-doped hard carbon (P-HC) via a one-step pyrolysis process using orthophosphoric acid (H₃PO₄), with the goal of enhancing the electrochemical performance of the resulting carbon material. Electrochemical analyses demonstrated that the 3P-HC anode delivered outstanding lithium storage performance, achieving a high specific capacity of 765 mAh g⁻¹ after 100 cycles at 0.2 A g⁻¹ and 531 mAh g⁻¹ after 200 cycles at 2 A g⁻¹. These results significantly surpass those of undoped PET-derived carbon anodes.
The performance improvements are attributed to phosphorus doping, which enhances electrical conductivity and induces beneficial structural modifications, including expanded interlayer spacing, increased surface area, and greater structural disorder.
Overall, this work offers a promising dual solution to both plastic waste management and the development of high-performance anode materials for next-generation lithium-ion batteries.