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The electrification of transportation and proliferation of portable electronics are rapidly increasing, leading to a significant demand for Li-ionLithium-ion battery batteriesBattery (LIBs)LIB batteries, specifically NMCNMC-type batteriesBattery. This surge in demand for Li, Ni, Mn, and Co elements is unsustainable if it relied solely on mining. Therefore, the need to prioritize lithiumLithium-ionLithium-ion battery battery recyclingBattery recycling in the coming decades is not just important, but urgent. While the hydrometallurgyHydrometallurgy process is considered greener for metal recoveryMetal recovery compared to pyrometallurgy, it requires further enhancements to address sustainabilitySustainability and environmental issues. These include reducing excessive acid usage and concomitant waste minimization (acidic wastewater and Na2SO4 production). To address these issues, the present work focused on improving the leachingLeaching efficiency of spent NMCNMC cathode material using a minimum amount of acid. We carried out the reductive leachingReductive leaching of spent Li-NMCNMC in H2SO4 media in a redox-controlled single feed semi-batch reactor through the regulated addition of H2O2.

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Reductive Leaching Investigation of Li-NMC Cathode Material Related to Spent Battery Recycling

  • 会议论文

  • 发表日期：

    2025年

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  • Gökçe Kiliç,
  • Krystal Davis,
  • George P. Demopoulos

摘要

The electrification of transportation and proliferation of portable electronics are rapidly increasing, leading to a significant demand for Li-ionLithium-ion battery batteriesBattery (LIBs)LIB batteries, specifically NMCNMC-type batteriesBattery. This surge in demand for Li, Ni, Mn, and Co elements is unsustainable if it relied solely on mining. Therefore, the need to prioritize lithiumLithium-ionLithium-ion battery battery recyclingBattery recycling in the coming decades is not just important, but urgent. While the hydrometallurgyHydrometallurgy process is considered greener for metal recoveryMetal recovery compared to pyrometallurgy, it requires further enhancements to address sustainabilitySustainability and environmental issues. These include reducing excessive acid usage and concomitant waste minimization (acidic wastewater and Na2SO4 production). To address these issues, the present work focused on improving the leachingLeaching efficiency of spent NMCNMC cathode material using a minimum amount of acid. We carried out the reductive leachingReductive leaching of spent Li-NMCNMC in H2SO4 media in a redox-controlled single feed semi-batch reactor through the regulated addition of H2O2.