Fruit waste-derived lixiviant: a viable green chemical for lithium-ion battery recycling
Fruit peel discards from various sources are harnessed as a renewable waste biomass feedstock for lithium-ion battery (LIB) recycling, showcasing the potential for green chemical production. Extractive methods, including hot water treatment, ultrasonic-assisted hydrolysis, and fermentation, produce...
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Main Authors: | , , , , , |
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Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2023
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/171303 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | Fruit peel discards from various sources are harnessed as a renewable waste biomass feedstock for lithium-ion battery (LIB) recycling, showcasing the potential for green chemical production. Extractive methods, including hot water treatment, ultrasonic-assisted hydrolysis, and fermentation, produce a fruit peel-derived lixiviant (FL) to extract valuable metals from industrial-grade spent LIB black mass. The FL obtained through fermentation using various fruit peels (e.g. orange, mango, papaya, honeydew, lemon, and pomelo) could effectively leach more than 90% of cobalt and lithium from LCO black mass, without the need for synthetic chemicals. Additionally, the use of oxalate precipitation could recover the leached cobalt ions from orange peel-derived FL at a high yield of around 85%. The cathode material regenerated from cobalt precipitate coupled with LiOH supplementation exhibits excellent electrochemical performance with a capacity retention of 93% after 140 cycles. Overall, this proposed method of using FL-enabled LIB recycling offers a significant new opportunity for a more resource-efficient circular and sustainable economy. |
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