Waste LiFePO (LFP) batteries can be harmful to the environment and lead to waste of resources if not properly disposed of. In this study, an efficient and environmentally friendly method for solid-phase recycling waste LFP cathode material (W-LFP) is proposed. Most of the impurities in the W-LFP are removed by air firing. The regenerated LFP is then obtained by adding lithium carbonate and triethanolamine for repair during heat treatment. The addition of triethanolamine converts Fe to Fe and also allows the formation of an N-doped modified carbon layer on the surface of the LFP particles, which improves the electrochemical properties of the regenerated material. Physical characterization and electrochemical tests are used to investigate the attenuation and regeneration mechanism of LFP. The regenerated LFP possesses a high specific discharge capacity (152.87 mAh g at 0.2 C), which is about 95.32% of the commercial LFP, and the capacity retention rate is 88.52% after 600 cycles at 1 C. It is worth noting that we do not use solvents such as acids and alkalis in the regeneration process, thus avoiding the generation of large quantities of acid and alkaline waste liquids, which is friendly to the environment. This solid-phase regeneration process offers a promising method for the future recycling of used LFP batteries because of its simplicity, environmental friendliness, and high efficiency.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.4c10148 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Electrospun Poly(vinyl Alcohol)/Chitin Nanofiber Membrane as a Sustainable Lithium-Ion Battery Separator.
Langmuir
December 2024
Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung, West Java 40132, Indonesia.
Commercial battery separators are made of polyolefin polymers due to their desired mechanical strength and chemical stability. However, these materials are not biodegradable and are challenging to recycle. Considering the environmental issues from polyolefins, biodegradable polymers can be developed as separators to reduce the potential waste from polyolefin separators.
View Article and Find Full Text PDFHigh-Value Resource Utilization of Steel Waste to Prepare Uniform Micronano LiFePO/C Cathode Material.
ACS Appl Mater Interfaces
November 2024
National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai 200237, China.
Article Synopsis
- Steel slag can be recycled and turned into valuable materials, specifically micronano FePO and LiFePO/C, through a two-step leaching and coprecipitation process.
- The study introduces a mechanism for metal leaching, highlighting the significance of understanding slag composition for effective recycling.
- The resulting carbon-coated LiFePO/C shows impressive discharge capacities, making it a viable option for applications that require quick ion diffusion and structural stability.
A Method of Efficiently Regenerating Waste LiFePO Cathode Material after Air Firing Treatment.
ACS Appl Mater Interfaces
November 2024
Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology for High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu,China.
Waste LiFePO (LFP) batteries can be harmful to the environment and lead to waste of resources if not properly disposed of. In this study, an efficient and environmentally friendly method for solid-phase recycling waste LFP cathode material (W-LFP) is proposed. Most of the impurities in the W-LFP are removed by air firing.
View Article and Find Full Text PDFPhotovoltaic-driven dual-oxidation seawater electrolyzer for sustainable lithium recovery.
Proc Natl Acad Sci U S A
October 2024
Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology Energy Institute for Carbon Neutrality, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
The insatiable demand for lithium in portable energy storage necessitates a sustainable and low-carbon approach to its recovery. Conventional hydrometallurgical and pyrometallurgical methods heavily involve hazardous chemicals and significant CO emissions. Herein, by integrating electrode oxidation with electrolyte oxidation, we establish a photovoltaic-driven "dual-oxidation" seawater electrolyzer system for low-carbon footprint and high lithium recovery.
View Article and Find Full Text PDFRecycled lithium battery nanomaterials as a sustainable nanofertilizer: Reduced peanut allergenicity and improved seed quality.
Sci Total Environ
December 2024
Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China. Electronic address:
Article Synopsis
- The rising waste from end-of-life lithium iron phosphate (LiFePO) batteries presents environmental challenges, but this study explores recycling these batteries as a sustainable resource for agriculture.
- Experimental results showed that adding recycled nano-LiFePO to soil improved peanut yield by 22%-34% and enhanced nutritional quality while promoting photosynthesis and root growth.
- Furthermore, the study found that exposure to LiFePO reduced peanut allergen gene expression by up to 99.78%, suggesting benefits for both crop quality and potential alleviation of peanut allergies.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!