Co/Mon Invigorated Bilateral Kinetics Modulation for Advanced Lithium–Sulfur Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(13)

Published: Dec. 22, 2023

Abstract Sluggish sulfur redox kinetics and Li‐dendrite growth are the main bottlenecks for lithium–sulfur (Li–S) batteries. Separator modification serves as a dual‐purpose approach to address both of these challenges. In this study, Co/MoN composite is rationally designed applied modifier modulate electrochemical on sides cathode lithium anode. Benefiting from its adsorption‐catalysis function, decorated separators (Co/MoN@PP) not only effectively inhibit polysulfides (LiPSs) shuttle accelerate their conversion but also boost Li + flux, realizing uniform plating/stripping. The accelerated LiPSs excellent reversibility triggered by modified evidenced performance, in‐situ Raman detection theoretical calculations. batteries with Co/MoN@PP achieve high initial discharge capacity 1570 mAh g −1 at 0.2 C low decay rate 0.39%, transportation 1 mA cm −2 over 800 h. Moreover, areal 4.62 achieved under mass loadings 4.92 mg . This study provides feasible strategy rational utilization synergistic effect multifunctional microdomains solve problems anode S toward long‐cycling Li–S

Language: Английский

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Synergistic Pyridinic N/Pyrrolic N configurations in rGO/CNT composite sulfur hosts for high-performance lithium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150872 - 150872

Published: March 31, 2024

Language: Английский

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Atom-Dominated Relay Catalysis of High-Entropy MXene Promotes Cascade Polysulfide Conversion for Lithium-Sulfur Batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The high-entropy TiVNbMoC 3 MXene, with its atom-dominated relay catalysis effect and resilient lattice configuration, promotes a cascade of sulfur conversions guides uniform Li + deposition, enabling shuttle-free dendrite-free Li–S batteries.

Language: Английский

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Activation of MOF Catalysts with Low Steric Hindrance via Undercoordination Chemistry for Efficient Polysulfide Conversion in Lithium–Sulfur Battery

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

Published: July 3, 2024

Abstract Lithium–sulfur (Li–S) batteries promise high theoretical energy density and cost‐effectiveness but grapple with challenges like the polysulfide shuttle effect sluggish kinetics. Metal–organic framework (MOF) catalysts emerge as a leading solution, despite limited conductivity steric hindrance. This study employs undercoordination chemistry to modify Zn–Co bimetallic MOFs (D‐ZIF L), removing organic ligands from active centers. process mitigates spatial hindrance, thereby promoting comprehensive contact between sulfur species metal centers, consequently enhancing catalytic efficiency of MOFs. Moreover, treatment centers induces electron redistribution, augmenting at Fermi level elements, ameliorating intrinsic conductivity. Leveraging these advantages, fabricated Li–S employing D‐ZIF L exhibited markedly mitigated shuttling effects accelerated conversion Notably, substantial reverse areal capacity 5.0 mAh cm⁻ 2 is achieved after 100 cycles an evaluated loading 5.5 mg . Furthermore, practical pouch cell demonstrated initial 1.8 Ah 85.8 mA stable cycling for 50 cycles. underscores potential in development highly conductive MOF minimized advancing prospects battery technology.

Language: Английский

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Multifunctional SnO2 QDs/MXene Heterostructures as Laminar Interlayers for Improved Polysulfide Conversion and Lithium Plating Behavior

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: June 28, 2024

Poor cycling stability in lithium-sulfur (Li-S) batteries necessitates advanced electrode/electrolyte design and innovative interlayer architectures. Heterogeneous catalysis has emerged as a promising approach, leveraging the adsorption catalytic performance on lithium polysulfides (LiPSs) to inhibit LiPSs shuttling improve redox kinetics. In this study, we report an ultrathin laminar SnO

Language: Английский

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Layered double Hydroxides-MXene heterointerfaces with abundant anion vacancies expediting sulfur redox kinetics for High‑Performance Lithium–Sulfur batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151285 - 151285

Published: April 15, 2024

Language: Английский

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Covalent organic frameworks-based functional separators for rechargeable batteries: Design, mechanism, and applications

Energy storage materials, Journal Year: 2024, Volume and Issue: 66, P. 103232 - 103232

Published: Jan. 28, 2024

Language: Английский

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Lattice Strain and Charge Localization Dual Regulation of Phosphorus‐Doped CoSe₂/MXene Catalysts Enable Kinetics‐Enhanced and Dendrite‐Free Lithium‐Sulfur Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(38)

Published: June 21, 2024

Abstract Phase engineering is considered an effective strategy to regulate the electrocatalytic activity of catalysts for Li–S batteries (LSBs). However, underlying origin phase‐dependent catalytic ability remains be determined, which significantly impedes design principles high‐performance materials LSBs. Herein, heteroatom‐doped can trigger phase transformation from mixed‐phased cubic and orthorhombic cobalt diselenide into pure structure with a tensile strain enhanced charge localization. The upshift d ‐band center Bader at Se sites synergistically strengthen interaction Li S in polysulfide species, thus endowing transformed P‐MoSe 2 /MXene high uniform lithium deposition Consequently, P‐CoSe demonstrate high‐rate capability 603 mAh g −1 4C, excellent cyclability 652 1C over 500 cycles degradation rate 0.076% per cycle. work provides in‐depth insight fundamental

Language: Английский

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Facile one-pot synthesis of Co3Mo3N-loaded inside hierarchical porous bead-on-string as cathode host material for high-performance lithium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 152987 - 152987

Published: June 12, 2024

Language: Английский

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Flash Joule Heating: A Promising Method for Preparing Heterostructure Catalysts to Inhibit Polysulfide Shuttling in Li–S Batteries

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

Published: July 16, 2024

The "shuttle effect" issue severely hinders the practical application of lithium-sulfur (Li-S) batteries, which is primarily caused by significant accumulation lithium polysulfides in electrolyte. Designing effective catalysts highly desired for enhancing polysulfide conversion to address above issue. Here, one-step flash-Joule-heating route employed synthesize a W-W

Language: Английский

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