Direct Regeneration of Spent LiFePO4 Cathode Material via Ionic Liquids as Efficient Ion Transport Media

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 111014 - 111014

Published: April 1, 2025

Language: Английский

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Ramsdellite-MnO₂ Regeneration via Acid-Mediated Redox Tuning toward Rechargeable Aqueous Zinc-Ion Batteries

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

The mounting accumulation of spent alkaline batteries (SABs) elicits concerns over both environmental threats and the recycling industry's profitability, closely tied to chemical reactions in manganese-based waste treatment. Herein, we design an acid-modulated phase-reconstruction strategy for sustainable recovery manganese oxides from SABs, where moderate proton participation facilitates preformation MnOOH intermediates before initial transformation ramsdellite-MnO2 (RM-R, orthorhombic) final conversion pyrolusite-MnO2 (RM-β, tetragonal) nanomaterials. This rarely reported metastable RM-R phase features a unique tunneled framework (1 × 2 edge-shared MnO6 octahedra) enabling reversible H+/Zn2+ (de)intercalation, though its traditional synthesis remains challenging due thermodynamic instability. First-principles calculations reveal that possesses lower Zn2+ diffusion barriers (0.44 eV) than RM-β (0.99 eV), consistent with superior storage performance. Moreover, higher specific surface area enables cathode battery-supercapacitor hybrid behavior, which delivers remarkable capacity (214.9 mA h g-1 at 0.1 A g-1) long cycling stability (98% retention after 1000 cycles), outperforming most MnO2-based cathodes. low-acid regeneration protocol (4 mL HCl/1.85 g waste) paves way closed-loop battery clarifies structure-property relationships oxides.

Language: Английский

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Mechanistic insights into the solvent assisted thermal regeneration of spent graphite and its upcycling into dual graphite batteries

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(19), P. 11362 - 11377

Published: Jan. 1, 2024

The spent lithium-ion battery is upcycled into a dual-graphite via solvent assisted thermal treatment.

Language: Английский

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Utilizing Cold Rolling Mill Iron Oxide To Synthesize Lithium Iron Phosphate for Li-Ion Batteries

ACS Sustainable Resource Management, Journal Year: 2024, Volume and Issue: 1(6), P. 1185 - 1194

Published: May 16, 2024

This study explores the utilization of cold rolling mill (CRM) iron oxide as a precursor for synthesizing high-performance lithium phosphate (LiFePO4) cathodes Li-ion batteries. The primary objective is to investigate viability employing synthesize LiFePO4 and their acceptable electrochemical performance sustainable development lithium-ion methodology involves transformation CRM into phosphate, followed by synthesis final LiFePO4/C cathode composite material with high crystallinity through solid-state sintering process. improved morphology intermediate facilitates cathode. transmission electron microscope analysis demonstrates successful high-crystalline carbon-coated material. Galvanostatic charge–discharge showed an initial discharge capacity 163 mAh/g at 0.1 C 148 1 91% retention after 100 cycles 85% C, respectively. overall observations reveal potential utilizing findings contribute advancing efficient battery technologies offering promising avenues enhancing energy storage systems.

Language: Английский

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Review—Advances in Rechargeable Lithium-Ion Batteries Utilizing Polyoxometalate-Functionalized Nanocarbon Materials

Journal of The Electrochemical Society, Journal Year: 2024, Volume and Issue: 171(8), P. 080536 - 080536

Published: Aug. 1, 2024

Polyoxometalates (POMs) are inorganic nanoclusters that consist of oxygen and transition metals. These serve as excellent precursors for creating electrode materials contain Additionally, the interaction between POMs carbon substrates produces positive synergistic effects. There has been considerable attention on employing nanostructures (for example nanotubes, graphene, mesoporous carbon) in composite diverse purposes including catalysis, transformation, storage energy, molecular detection, electrical detection. By combining reactive nature with exceptional properties nanostructures, highly desirable features can be achieved. This review delves into extensive use POM/nanocarbon constructing rechargeable lithium-ion batteries, providing an in-depth analysis characteristics techniques employed binding carbon.

Language: Английский

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The Charge Storage Mechanism and Durable Operation in Olivine–Lithium–Iron–Phosphate for Mn‐based Hybrid Batteries

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Aqueous batteries have garnered considerable attention because of their cost‐effectiveness, sufficient capacity, and non‐flammable water‐based electrolytes. Among these, manganese are particularly attractive owing to stability, abundance, affordability, higher energy density. With a lower redox potential (Mn: −1.19 V vs SHE) than zinc (Zn: −0.76 SHE), theoretically offer superior density over traditional zinc‐based systems. In this study, LiFePO 4 is introduced as cathode material in aqueous manganese‐based hybrid for the first time. Through electrochemical characterization advanced structural spectroscopic analyses, charge storage mechanisms protons FePO elucidated. Cation diffusion pathways also investigated via barrier calculations. This study presents with good stability capacity ≈109.2 mAh g −1 at 40 mA , alongside cycle retention 42.1% after 3000 cycles 320 . Furthermore, an Mn 2+ /Li + battery, achieving ≈1.6 durability (81.5% @ 1000th), proposed.

Language: Английский

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Architecture Engineering for Thick Electrodes in High-Energy Batteries: Challenges and Strategies

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

With the burgeoning demand for smart portable electronic devices and high-performance electric vehicles, there is tremendous urgency to further dramatically improve energy density of rechargeable batteries. Although utilizing thick electrodes a straightforward productive approach, slow reaction kinetics inadequate mechanical strength caused by thickness increase have hampered their development. Therefore, break through bottleneck electrodes, we comprehensively summarize recent progress electrode architecture engineering in field Considering relationship between structure electrochemical performance, focus on four crucial challenges (high tortuosity, electron ion transport, improper porosity, visible cracking) corresponding solutions (constructing vertically aligned hierarchical channels, introducing multidimensional conductive materials, regulating degree calendering, so on) constructing electrodes. Finally, construction strategy inextricable these factors are summarized, an outlook development research directions toward discussed, providing valuable reference designing

Language: Английский

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Heterogeneous-Interface-Induced Charge Redistribution Toward Fe-Based Polyanion Cathode for Advanced Sodium-Ion Batteries

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Na4Fe3(PO4)2P2O7 (NFPP) is gradually developing into one of the most commercially prospective cathode materials for sodium-ion batteries. However, inactive phase maricite-NaFePO4 (m-NFP) normally tends to be formed during synthesis process NFPP, as well intrinsic poor electronic conductivity, which impacts realization high Na-storage performance. Herein, first time, we have constructed a heterostructure in Fe-based polyanionic by fine-tuning stoichiometric ratio Na site; m-NFP fully transformed active Na2FeP2O7 or NFPP. In NFPP-NFPO heterogeneous composites, density functional theory calculations reveal that charge redistribution occurs at interface, leading stronger and more uniform interactions can strengthen structural stability enhance transport kinetics. Benefiting from intergrowth structure formation electrochemically phase, discharge specific capacity, ultralong cycle life (71.4% capacity retention after 10,000 cycles 50 C), ultrafast rate capability (60.2 mAh g-1 200 impressive high-temperature tolerance been achieved. This work achieves composites manipulation composition, providing new approach designing high-performance cathodes

Language: Английский

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Kinetics of Active Seed-Induced Al(OH)₃ Precipitation from NaAlO₂ Solution for Recycling Aluminum from Spent Lithium-Ion Batteries

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(15), P. 14704 - 14711

Published: July 17, 2024

Language: Английский

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From Spent Lithium‐Ion Batteries to High‐Performance Supercapacitors: Enabling Universal Gradient Recycling via Spin Capacitance

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

Published: Dec. 4, 2024

Abstract Driven by environmental imperatives and the growing economic challenges posed accumulation of spent batteries, developing effective recycling strategies has become paramount. Current direct battery methodologies primarily focus on structural restoration, but universality this approach is hampered variability in electrode degradation mechanisms extent irreversible damage sustained after cycling. To overcome these inherent limitations, research introduces a universally applicable situ strategy that rejuvenates metal components within batteries. Through an facile electrochemical treatment, cathode material engineered to create nanostructured interface composed transition metal/lithium compounds, enhancing intrinsic electron/ion conduction enabling substantial charge storage with accelerated transfer capabilities. Furthermore, operando magnetometry reveals energy mechanism aligns space mechanism, manifesting as spin‐polarized capacitance. As proof concept, recycled LiFePO 4 ‐based batteries are converted into high‐performance supercapacitors, boasting density 106 Wh kg −1 power 10,714 W , alongside impressive cycling stability 91.3% capacitance retention 2000 cycles. This demonstrates feasibility extends other commercial cathodes such LiCoO 2 LiNi 1/3 Co Mn O even their blends, offering groundbreaking solution for lithium‐ion recycling.

Language: Английский

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