Transforming spent lithium iron phosphate cathodes and waste plastics into high-performance sodium-ion battery anodes via co-pyrolysis

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-02-20 DOI:10.1016/j.coco.2025.102306

Botao Zheng , Shihong Chen , Mulan Tu , Kun Zuo , Jiayi Yang , Qinghua Chen , Yuming Chen , Xiaochuan Chen , Liren Xiao , Junxiong Wu , Xiaoyan Li

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Abstract

With the increasing prevalence of lithium iron phosphate (LFP) batteries and waste ultra-high molecular weight polyethylene (UHMWPE) products, advanced recycling strategies have garnered significant interest in sustainable resource development. However, challenges such as cumbersome procedures and improper hazardous waste disposal must be effectively addressed. In this work, we propose a simplified and economical method for converting waste LiFePO₄ cathode waste to a novel sodium-ion battery anode material. By leveraging waste plastics to catalyze the production of carbon nanotubes (CNTs) at high temperatures, a novel anode material, R-Fe₂P/CNT, was fabricated, which exhibits excellent long-term cycling stability (capacity retention rate of 86.36 % at 1.0 A g⁻¹ after 600 cycles) and rate capability. Furthermore, density functional theory calculations showed improved sodium adsorption and enhanced electronic conducitivity in R-Fe₂P/CNT composites. This strategy effectively recycles the valuable components of used batteries and plastics, offering a new "treating waste with waste" concept for the preparation of functional materials.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.