Closed‐Loop Direct Upcycling of Spent Ni‐Rich Layered Cathodes into High‐Voltage Cathode Materials

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 15, 2024

Abstract Facing the resource and environmental pressures brought by retiring wave of lithium‐ion batteries (LIBs), direct recycling methods are considered to be next generation's solution. However, contradiction between limited battery life demand for rapidly iterating technology forces recovery paradigm shift toward “direct upcycling.” Herein, a closed‐loop upcycling strategy that converts waste current collector debris into dopants is proposed, highly inclusive eutectic molten salt system utilized repair structural defects in degraded polycrystalline LiNi 0.83 Co 0.12 Mn 0.05 O 2 cathodes while achieving single‐crystallization transformation introducing Al/Cu dual‐doping. Upcycled materials can effectively overcome two key challenges at high voltages: strain accumulation lattice oxygen evolution. It exhibits comprehensive electrochemical performance far superior commercial 4.6 V, especially its fast charging capability 15 C, an impressive 91.1% capacity retention after 200 cycles 1.2 Ah pouch cell. Importantly, this approach demonstrates broad applicability various spent layered cathodes, particularly showcasing value mixed cathodes. This work bridges gap management material enhancement, offering sustainable path LIBs production next‐generation high‐voltage

Язык: Английский

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The evolution of lithium-ion battery recycling

Опубликована: Янв. 15, 2025

Язык: Английский

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Targeted Defect Repair and Multi‐functional Interface Construction for the Direct Regeneration of Spent LiFePO₄ Cathodes

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 11, 2024

Abstract Due to the low economic benefits and environmental pollution of traditional recycling methods, disposal spent LiFePO 4 (SLFP) presents a significant challenge. The capacity fade SLFP cathode is primarily caused by lithium loss formation Fe (III) phase. Herein, synergistic repair effect proposed achieve defect multi‐functional interface construction for direct regeneration SLFP. Tannic acid (TA) forms compact coating precursor carbon layer on with abundant functional groups creates mildly acidic environment enhance reducibility thiourea (TU). Therefore, TU reduces (II) repairs Li‐Fe anti‐site defects SLFP, while at same time acting as source N/S‐doping elements lower temperature (140 °C). improves properties regenerated (RLFP) due enhanced conductivity, structure maintenance protection, improved kinetics Li + transport. Furthermore, Fe─O P─O bonds are strengthened, further enhancing structural stability RLFP. Consequently, RLFP demonstrates outstanding performance discharge 141.3 mAh g −1 retention 72% after 1000 cycles 1 C.

Язык: Английский

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Ultrasound-assisted efficient and convenient method of extracting valuable metals (Ni, Co, and Cd) from waste Ni–Cd batteries using DL-malic acid

Journal of Environmental Management, Год журнала: 2024, Номер 366, С. 121706 - 121706

Опубликована: Июль 8, 2024

Язык: Английский

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Recycling of Spent Lithium Iron Phosphate Cathodes: Challenges and Progress

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Сен. 16, 2024

The number of spent lithium iron phosphate (LiFePO

Язык: Английский

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Surface Engineering Enabling Efficient Upcycling of Highly Degraded Layered Cathodes

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Direct recycling of cathode materials has attracted phenomenal attention due to its economic and eco-friendly advantages. However, existing direct technologies are difficult apply highly degraded layered as the accumulation thick rock-salt phases on their surfaces not only blocks lithiation channels but also is thermodynamically transform into phases. Here, a surface engineering-assisted upcycling strategy that reactivates lithium diffusion at using acid etching explored. Acid can selectively remove electrochemically inert while simultaneously dissociating polycrystalline structure single crystals, thereby reducing thermodynamic barrier relithiation process enhancing stability regenerated cathode. This restore capacity LiNi0.5Co0.2Mn0.3O2 from 59.7 165.4 mAh g-1, comparable commercialized ones. The exhibits excellent electrochemical with retention 80.1% 1 C after 500 cycles within 3.0-4.2 V (vs graphite) in pouch-type full cells. In addition, generality this been validated Ni-rich LiCoO2. work presents promising approach for materials.

Язык: Английский

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Advancing aqueous zinc‐ion batteries with carbon dots: A comprehensive review

EcoEnergy, Год журнала: 2024, Номер unknown

Опубликована: Дек. 3, 2024

Abstract Recent years have witnessed a surge in research on aqueous zinc‐ion batteries (AZIBs) due to their low cost, stability, and exceptional electrochemical performance, among other advantages. However, practical manufacturing deployment of AZIBs been hindered by challenges such as energy density, significant precipitation‐related side reactions, slow ion migration, dendritic growth. Addressing these issues enhancing the application necessitates development novel materials. Carbon dots (CDs), with distinctive structure superior properties, represent an innovative class carbon‐based materials broad potential applications for optimizing AZIBs' performance. This study offers comprehensive review how CDs can address aforementioned AZIBs. It begins overview composition mechanism before delving into classification, preparation techniques, functionalization strategies CDs. The also thoroughly summarizes sophisticated roles modifiers electrolytes electrodes, both positive negative, briefly discusses membranes. Additionally, it provides summary current difficulties encountered utilizing aims provide insights guidance designing next generation high‐performance

Язык: Английский

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Advances in Recycling Technologies of Critical Metals and Resources from Cathodes and Anodes in Spent Lithium-Ion Batteries

Separations, Год журнала: 2024, Номер 12(1), С. 4 - 4

Опубликована: Дек. 30, 2024

With the rapid economic development and continuous growth in demand for new energy vehicles storage systems, a significant number of waste lithium-ion batteries are expected to enter market future. Effectively managing processing recycling these minimize environmental pollution is major challenge currently facing battery industry. This paper analyzes compares strategies different components batteries, providing summary main types existing technologies at various pre-treatment stages, techniques valuable resources such as heavy metals graphite. Currently, pyrometallurgy hydrometallurgy processes have matured; however, their high consumption levels conflict with principles current green economy. As result, innovative emerged, aiming reduce while achieving recovery rates minimizing impact. Nevertheless, most limited laboratory scale not yet suitable large-scale application.

Язык: 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, Год журнала: 2024, Номер 1(8), С. 1791 - 1801

Опубликована: Июль 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.

Язык: Английский

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Electrochemical Relithiation in Spent LiFePO₄ Slurry for Regeneration of Lithium-Ion Battery Cathode

Inorganic Chemistry, Год журнала: 2024, Номер 63(37), С. 17166 - 17175

Опубликована: Сен. 2, 2024

Recycling spent lithium-ion batteries (LIBs) in a green and economical way is vital for maintaining the sustainability of LIB industry. However, given low content high-value components olivine-type lithium iron phosphate (LFP), traditional metallurgical processes are economically unfeasible recycling due to high chemical/energy consumption labor-intensive procedures. This study proposes facile electrochemistry strategy directly regenerate LFP material by an electrically driven lithiation process as slurry (200 g/L) rather than electrodes. Minimal energy chemical achieved enabling healing without destroying original crystal structure. The proposed method utilizes mild conditions (25 °C 2 h) LiCl solution only reagent regeneration process, significantly lowering expenses associated with producing cathode electrochemical performance regenerated have been dramatically recovered after regeneration, exhibiting capacity 151.5 mA h g

Язык: Английский

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