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Enabling the sustainable recycling of LiFePO4 from spent lithium-ion batteries.
- Source :
-
Green Chemistry . 3/21/2022, Vol. 22 Issue 6, p2506-2515. 10p. - Publication Year :
- 2022
-
Abstract
- The recycling of spent lithium-ion batteries (LIBs) is a crucial issue that has engaged extensive attention worldwide, along with the rapidly increasing usage of lithium-ion batteries. State-of-art recycling approaches, in terms of chemical leaching, have imperfections such as excessive chemical consumption, tedious recycling procedure and aggravated secondary pollution. In this research, a green and closed-loop route for the recycling of spent LiFePO4 involving oxidation leaching is demonstrated. By properly adjusting or controlling the leaching parameters, the leaching efficiency of lithium is up to 97.6% with the introduction of hydrogen peroxide, which is facilitated to achieve the transformed high-purity lithium carbonate and iron phosphate. The oxidation reaction mechanisms are clarified through thermodynamic and kinetic analyses, which identified that the oxidation leaching reaction is co-controlled by the internal diffusion and chemical reaction. Consequently, LiFePO4 cathode materials are regenerated by utilizing the obtained raw materials, as expected, which deliver superior cycling stability with less than 1% of capacity loss after 300 cycles and excellent rate performances. This research embodies the possibility of efficient recycling of LiFePO4 from spent lithium-ion batteries based on the principles of green chemistry that is possibly committed to the sustainability of the lithium-ion battery industry. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 22
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 155869657
- Full Text :
- https://doi.org/10.1039/d1gc04784a