Upcycling degraded layered oxide cathodes from spent lithium-ion batteries toward emerging materials: A review

Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103636 - 103636

Published: July 10, 2024

Language: Английский

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A Multifunctional Secondary Based on Heterogeneous Co‐MnO@NC for Depth‐Induced Deposition and Conversion of Polysulfides in Li─S Batteries

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 6, 2024

The conductive carbon-based interlayer, as the secondary current collector in self-dissolving battery system, can effectively capture escaping cathode active materials, inducing deep release of remaining capacity. In multi-step reactions Li─S batteries, environmental tolerance interlayer to polysulfides determines inhibition shuttle effects. Here, a modified metal-organic framework (Mn-ZIF67) is utilized obtain nitrogen-doped carbon-coated heterogeneous Co-MnO (Co-MnO@NC) with dual catalytic center for functional materials. synergistic coupling mechanism NC and achieves rapid deposition conversion free polysulfide fragmented sulfur on collector, reducing capacity loss cathode. Co-MnO@NC/PP separator maintains an initial 1050 mAh g

Language: Английский

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Lithiating Cathodes for Li-S Batteries: Regulating Li2S Electrodeposition to Enhance Sulfur Utilization

Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103644 - 103644

Published: Aug. 1, 2024

Language: Английский

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Tellurium doped sulfurized polyacrylonitrile nanoflower for high-energy-density, long-lifespan sodium-sulfur batteries

Nano Energy, Journal Year: 2024, Volume and Issue: 129, P. 110049 - 110049

Published: July 24, 2024

Language: Английский

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Sulfur Redox Catalysis of Cobalt-Embedded Nitrogen-Doped Carbon Nanotube-Functionalized Separators in Lithium–Sulfur Batteries

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

Published: Jan. 8, 2025

Lithium–sulfur batteries (LSBs) offer high specific energy at low cost but are hindered by the shuttle effect, which reduces capacity and cycle life due to sluggish sulfur (S) redox kinetics. Although issue can be addressed modifying separator with metal–nitrogen–carbon (M–N–C) materials, detailed explanations often lacking. In this study, cobalt-embedded nitrogen-doped carbon nanotubes (Co-NCNTs) were used functionalize separator. X-ray photoelectron spectroscopy shows that Li+ from lithium polysulfides (LiPSs) interacts N–C framework in Co-NCNTs during discharge, accompanied electron injection maintain charge balance. This exchange is more pronounced Co N sites throughout charge/discharge cycle. facilitate rate-determining conversion between Li2S upon interaction Co-NCNTs. As a result, our modified LSBs delivered 1496.9 501.1 mA h g–1 discharge rates of 0.1 5 C, respectively, maintaining stability over 100 cycles without significant effect. work provides valuable insights into designing high-energy, long-life through modification.

Language: Английский

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Self‐Supported Tungsten Nitride and Carbide Heterostructures with Vanadium Doping Tandemly Catalyze the Conversion of Polysulfides for Lithium‐Sulfur Batteries

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

Published: Oct. 10, 2024

Abstract The intrinsically sluggish sulfur reduction reaction kinetics and serious shuttle effect of soluble lithium polysulfides (LiPSs) severely impede the practical commercialization lithium‐sulfur (Li‐S) batteries. Herein, self‐supported tungsten nitride carbide heterostructures with vanadium doping that are directly grown on carbon cloth substrate (CC@V‐W 2 N/WC 1‐ x ) creatively designed for Li‐S batteries, which can tandemly catalyze liquid–liquid conversion liquid–solid polysulfide intermediate free any interference from polymer binders conductive additives. Noteworthy, rich heterointerfaces beneficial rapid charge transfer, strong chemical adsorption toward LiPSs, massive exposed catalytically active sites, remarkable catalytic activities. Consequently, batteries assembled CC@V‐W /S cathodes exhibit high utilization, superior rate capability, decent long‐term cycling stability. Furthermore, experimental analyses theoretical calculations jointly substantiate V‐W N component is more effective in catalyzing long‐chain while V‐WC benefits favorable Li S deposition kinetics. More importantly, pouch cells also fabricated to demonstrate their feasibility applications. This work not only highlights significance tandem catalysis consecutive LiPSs but provides a feasible avenue developing highly efficient electrocatalysts high‐performance

Language: Английский

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Pivotal Role of Multishelled Architecture in Nanoreactor with Spatial Confined Co₃O₄ for Peroxymonosulfate Activation and Contaminants Degradation

Small Structures, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

In recent years, cobalt‐based catalysts have been widely used in advanced oxidation technology to degrade pollutants water environments. However, the reasons for improved efficiency and performance of with different shapes structures on activation persulfate contaminant degradation are still largely unknown. This study constructs catalysts, namely, Co 3 O 4 nanosphere, multishelled nanosphere (MSCONS), nanocube nanocube, combination activation, tetracycline (TC) bisphenol A (BPA), representative substances antibiotics endocrine disruptors Batch experiments exhibit satisfactory TC (96.3%) BPA (98.5%) under MSCONS/peroxymonosulfate. Furthermore, MSCONS exhibits wide applicability complex matrix conditions. Consequently, an integration density functional theory computations intermediates analysis demonstrates that synergy, rather than isolated effects radical nonradical active species, broadens pathways BPA, thereby improving removal efficiency. Overall, this offers novel insights into factors contributing enhanced varying structures. Additionally, it proposes new research avenues investigating other transition metal‐based catalysts.

Language: Английский

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Curvature-Induced Electron Delocalization Activates the Bifunctional Catalytic Activity of COF/MXene for High-Performance Lithium–Sulfur Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Covalent organic frameworks (COFs) have shown promise as bifunctional catalysts to simultaneously mitigate shuttle effects and Li dendrite issues of lithium–sulfur (Li–S) batteries. However, the inherent low conductivity COFs has significantly limited their catalytic activity stability. Herein, durability COF/MXene heterostructure are activated by tuning surface curvatures interfaced with MXene. The increased curvature could induce enhanced electron delocalization alter geometry, which in turn strengthens lithium polysulfide adsorption, lowers energy barriers, stabilizes sites promote sulfur redox reactions. Concurrently, hierarchical structure improves electrolyte penetration wettability, facilitates rapid ion transport, homogenizes Li-ion flux distribution, thus achieving uniform deposition. Consequently, 1D-COF/MXene Li–S batteries demonstrate a high-rate capacity 926 mA h g–1 at 4C, stable cycling performance reversible 589 3C after 500 cycles, high 604 cm–2 loading 3.5 mg under electrolyte-to-sulfur ratio 10 μL mg–1. This work offers an efficacious approach regulate stability catalysts.

Language: Английский

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Upcycling and recycling of spent battery waste for a sustainable future: Progress and perspectives

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101478 - 101478

Published: March 1, 2025

Language: Английский

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P doping adjusts the coordination structure of single atoms to accelerate the catalytic bidirectional redox reaction in Li–S batteries

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Language: Английский

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