Sustainable recovery and resynthesis of electroactive materials from spent Li-ion batteries to ensure material sustainability

Sarkar, Montajar; Hossain, Rumana; Sahajwalla, Veena

doi:10.1016/j.resconrec.2023.107292

Cited by 18 publications

(1 citation statement)

References 238 publications

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“…Recycling Li-ion batteries is a critical issue because of the substantial waste produced by these devices. The situation becomes more concerning with the rise of electric vehicles, as it is projected that by 2030, 11 million tons of batteries will be generated, with an expected increase to 900 million by 2048 [21,22]. Consequently, this study focuses on the direct discoloration of indigo carmine (IC) using a spent cathode (SC) from a recycled Li-ion battery.…”

Section: Introductionmentioning

confidence: 99%

Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

Garcia,

Martins,

Taroco

et al. 2024

Preprint

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This paper proposes recycling spent cathodes (SC) from Li-ion batteries to decolorize indigo carmine (IC) solutions, thus eliminating the need for hydrogen peroxide (H2O2) or ultraviolet (UV) light exposure. The discoloration of indigo carmine is significantly influenced by the pH level, especially from 4.74 to 2. At lower pH values (pH ≤ 2), the decolorization kinetics are not affected by H+ ions and follow first-order kinetics. A 10ppm solution at pH = 3 was decolorized in approximately 20 minutes, suggesting that spent cathodes from Li-ion batteries are promising for advanced oxidative processes. The study also emphasizes the risks associated with improper disposal of Li-ion batteries, as spent cathodes can chemically react with organic molecules similar to indigo carmine in landfills, without the presence of peroxide or sunlight. Mass spectrometry has helped identify the discoloration mechanism, which involves the oxidative reaction of indigo carmine leading to the formation of isatin acid.

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Section: Introductionmentioning

confidence: 99%

Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

Garcia,

Martins,

Taroco

et al. 2024

Preprint

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Electrochemical Compatibility of Microzonal Carbon in Ion Uptake and Molecular Insights into Interphase Evolution for Next‐Generation Li‐Ion Batteries

Sarkar,

Hossain,

Peng

et al. 2024

Advanced Energy Materials

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Carbon anode‐based Li‐ion batteries (LIBs) have been widely used ranging from portable electronics to electric vehicles (EVs). Here a novel carbon material called microzonal carbon is introduced, synthesized from waste hard rubber (WHR), as an anode material for next‐generation LIBs. This material consists of a hybrid carbon structure embedded with short range ordered carbon zones, including expanded graphene sheets and nanopores. Two types of microzonal carbons (M‐5H and M‐10H) are tested in LIBs to unveil their electrochemical performance. The anode fabricated with M‐10H provides a high initial coulombic efficiency (60%), reversible capacity (377 mA h g−1 at 0.13 C), rate capability (275 mA h g−1 at 2.6 C) and cyclic stability (capacity retention of 99% at 0.13 C after 100 cycles). The electrochemical properties of microzonal carbon can be attributed to its unique hybrid carbon structure, facilitating fast ion diffusion, high electronic conductivity, and the ability to form stable interphase. Therefore, this work presents new insights into the electrochemical behavior of microzonal carbon as an anode material in next‐generation LIBs.

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Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

Garcia,

Martins,

Taroco

et al. 2024

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Sustainable recovery and resynthesis of electroactive materials from spent Li-ion batteries to ensure material sustainability

Cited by 18 publications

References 238 publications

Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

Electrochemical Compatibility of Microzonal Carbon in Ion Uptake and Molecular Insights into Interphase Evolution for Next‐Generation Li‐Ion Batteries

Oxidative decolorization of indigo carmine dye using spent cathode of Li-ion batteries

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