Supercritical CO₂ technology for the treatment of end-of-life lithium-ion batteries

RSC Sustainability, Journal Year: 2024, Volume and Issue: 2(6), P. 1692 - 1707

Published: Jan. 1, 2024

Supercritical fluid technology is a promising approach for sustainable and efficient resource recovery (especially fluorinated binders electrolytes) from end-of-life lithium ion batteries with significant economic environmental perspectives.

Language: Английский

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Direct NCA Cathode Active Materials Recycling from Spent Li-Ion Batteries: Solvent-Free Recovery and Healing by Heat Treatment

ACS Sustainable Resource Management, Journal Year: 2024, Volume and Issue: 1(8), P. 1791 - 1801

Published: July 30, 2024

The steadily growing lithium-ion batteries (LIBs) market brings the critical question of future treatment tremendous waste from end-of-life (EoL) LIBs. Therefore, recycling EoL LIBs has become an urgent need to overcome foreseen environmental and economic challenges. Herein, we propose a direct process regenerate NCA cathode active material (CAM) spent A gentle heat pretreatment at low temperature is applied facilitate recovery CAMs. strips were subjected two temperatures (150 or 250 °C) during short time (2 h) deactivate strong bonding between polyvinylidene difluoride binder Al current collector surface. Thus, CAM easily fully reclaimed foil. Moreover, developed procedure preserves integrity structure without any morphological changes. full restoration NCA-based powder successfully achieved through Li-replenishing using Li2CO3 under O2 atmosphere different sintering (750 900 °C). healed CAMs demonstrate decent electrochemical performance including good cyclability rate in NCA//Li half-cell NCA//LTO full-cell configurations.

Language: Английский

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Laser‐Induced Regeneration of Spent LiMn₂O₄ Cathode Into High‐Performance Ni‐Doped LiMn₂O₄ Cathode

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract The rapid increase in lithium‐ion battery (LIB) production, fueled by the rise of electric vehicles, highlights significant challenges managing end‐of‐life LIBs, particularly regarding environmental impact and waste management. Traditional recycling methods, such as pyrometallurgical hydrometallurgical processes, are energy‐intensive consume substantial reagents. In this study, a laser‐assisted regeneration method is introduced for LiMn 2 O 4 (LMO) cathodes, enabling situ Ni doping into spent LMO cathodes (r‐LMO‐Ni) to enhance electrochemical performance. Surface Ni‐doping improves interfacial processes reduces capacity loss at lower temperatures creating new interface with charge transfer energy barrier. r‐LMO‐Ni cathode surpasses pristine achieving specific 112.95 mA h g −1 1 C retaining 95.1% its after 200 cycles 0 °C. A techno‐economic analysis supports feasibility approach, offering an innovative pathway upcycling developing next‐generation Mn‐based cathodes.

Language: Английский

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Electrochemical Synergistic Recycling: Coupling Lithium Extraction with Regeneration of Spent LiFePO₄ Cathode Materials

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(34), P. 15291 - 15300

Published: Aug. 20, 2024

With the widespread application of lithium-ion batteries, a large amount spent batteries will be produced every year, and their recycling reuse pose an imminent issue. The conventional methods, such as pyrometallurgy hydrometallurgy, usually involve various processes like calcining, leaching, enriching, purifying, precipitating, filtering. They are associated with high energy consumption, amounts acid alkali reagent utilization, therefore costs. Currently, waste electrode materials containing value metals, Li, Co, Ni Mn, has been commercially successful. However, it faces economical dilemma for LiFePO4 cathode material which comprises cheap Fe P elements except lithium element, especially when price goes down. Here, this work demonstrates electrochemical strategy that directly combines extraction from regeneration iron phosphate materials. Experimental results demonstrate feasibility effective materials, adequate replenishment electrodes driven by positive bias 0.3 V (vs SHE). leaching rate reaches 95%, regenerated exhibits specific discharge capacity 125.40 mAh g–1 at 5 C. This synergistic method avoids in traditional methods related wastewater disposal, carbon dioxide emission, thus exhibiting economic benefit environmentally benign significance.

Language: Английский

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A simple but efficient Li-doping approach for enhancing supercapacitor performance of the BiFeO₃ perovskite nanostructures

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(39), P. 16355 - 16366

Published: Jan. 1, 2024

Li-doping strategy is a potential approach for obtaining an enhanced energy storage performance in the BiFeO 3 .

Language: Английский

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