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

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

Published: July 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

Language: Английский

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Unlocking the Crucial Role of Oxygen Vacancies on the Low‐Temperature Li‐Ion Storage

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Designing crystal structures that enable fast Li‐ion transport is essential for achieving high performance in oxide electrodes low‐temperature lithium‐ion batteries (LT‐LIBs), especially micron‐scale particles. The introduction of point defects considered to be effective accelerating local at room temperature, but due the discontinuity defects, enhancement low temperatures remains verified. Besides, understanding defect impact quite limited. In this study, a vanadium pentoxide (V 2 O 5 ) cathode with abundant oxygen vacancies bulk phase successfully synthesized. Such structure tends form continuous and channels, facilitating deep lithiation ultralow exceptional rate capability impressive capacitance retention (74% −40 °C 54% −50 °C). Remarkably, an empirical relationship between storage oxides uncovered. Specifically, degree exhibits two distinct trends depending on temperature: linear increase response vacancy concentration above °C, exponential below threshold. insights gained here highlight crucial role concentrations temperatures, providing direction tackling critical challenges battery technologies.

Language: Английский

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Oxygen Vacancy in Accelerating the Electrocatalytic Small Molecule Oxidation Properties

Electrochemical Energy Reviews, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 27, 2025

Language: Английский

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Chemical Looping Combustion for Coupling with Efficient CO₂ Capture and Utilization: Stable Oxygen Carriers and Carbon Cycle

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The capture of CO2 with chemical looping combustion (CLC) offers a novel approach to significantly reduce carbon emissions while simultaneously utilizing captured as valuable resource by leveraging its inherent separation capability. in CLC technology achieves low-cost through the utilization highly efficient oxygen carriers (OC), enabling coupling subsequent hydrogenation reactions for high-value-added production. This review comprehensively summarizes principle technology, current status OC research, and potential synthesis, providing theoretical insights into feasibility activating within practical industrial processes. stable brought about excellent properties higher application value long term operation. careful selection rational design vacancies are keys enable this technology; however, further research is needed develop optimize efficiency product yields elucidating underlying reaction mechanisms.

Language: Английский

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Structural Engineering and Operando Characterization of Advanced Catalysts for Electrochemical Nitrogen Reduction Reaction

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110693 - 110693

Published: Jan. 1, 2025

Language: Английский

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Design of coral-like P5ICA/Ov-MoO3 composites with oxygen vacancy for electrochromic supercapacitors

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161626 - 161626

Published: March 1, 2025

Language: Английский

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In-situ identification and dynamic transformation of FeOOH with different phases for oxygen evolution reaction

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 190, P. 109319 - 109319

Published: Jan. 22, 2025

Language: Английский

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In-situ constructing of NiO/CoFe2O4 heterojunction through oxophilicity engineering for efficient water oxidation

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178952 - 178952

Published: Feb. 1, 2025

Language: Английский

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Oxygen vacancy-rich CuBi2O4/Bi2O3 heterostructure and flower-like NiCo layered double hydroxides electrodes for high-performance asymmetric supercapacitors

Journal of Power Sources, Journal Year: 2025, Volume and Issue: unknown, P. 236558 - 236558

Published: Feb. 1, 2025

Language: Английский

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Synergistic interaction of BiOCl surface OVs and bulk OVs for photocatalytic mercury removal

Fuel, Journal Year: 2025, Volume and Issue: 388, P. 134555 - 134555

Published: Feb. 3, 2025

Language: Английский

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