Unveiling the Curvature‐Dependent Electrocatalytic Kinetics for Sulfur Redox Reaction in Li‐S Chemistry

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

Published: Feb. 3, 2025

Abstract Lithium‐sulfur (Li‐S) batteries have suffered from serious “shuttle effect” and sluggish kinetic of sulfur redox reaction (SRR). Herein, we focus on the circumferential strain engineering tailoring single‐atom catalysts (SACs) for fast SRR in Li‐S batteries. A distinguish coaxial V‐doped MoS 2 @CNTs (V‐MoS @CNTs) heterostructure with uniform biaxial is developed as platform to unveil curvature‐dependent electrocatalytic kinetics SRR. Both experimental results theoretical calculations show that this not only benefits interaction between cathodes LiPSs, but also dynamically strengthens by a modified d‐band structure dual‐metal active sites, i.e., V Mo. Consequently, V‐MoS strong exhibit discharge capacity 1202 mAh cm −2 at 0.5 C fading 0.052% 1 C, while an outstanding rate performance 796 g −1 5 C. In addition, high area 3.2 maintained after 65 cycles 0.1 loading 3.7 mg . The strategy work deepens understanding impact curving SRR, provides feasible way scale‐up synthesis high‐performance SACs tunable activities.

Language: Английский

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Advanced Characterization Techniques for Probing Redox Reaction Mechanisms in High‐Performance Li–S Batteries

Carbon Neutralization, Journal Year: 2025, Volume and Issue: 4(2)

Published: Feb. 19, 2025

ABSTRACT The development of high‐performance energy storage systems requires several key attributes, including high and power density, cost‐effectiveness, safety, environmental sustainability. Among the various potential technologies, lithium–sulfur batteries stand out as a promising contender for future solutions due to their exceptional theoretical specific density (2600 Wh kg⁻¹) relatively capacity (1675 mAh g⁻¹). However, commercialization faces significant challenges, such low sulfur loading, rapid degradation, poor cycling stability. At heart these issues lies limited understanding complex conversion chemistry involved in batteries. In recent years, progress has been made elucidating reaction mechanisms, thanks use both ex situ characterization techniques. Methods optical spectroscopy, time‐of‐flight secondary ion mass spectrometry, synchrotron X‐ray, neural network analysis have demonstrated great uncovering redox processes lithium polysulfides underlying significantly advancing research battery systems. This review focuses on major advancements research, particularly study electrocatalytic mechanisms using emerging We discuss aspects accurately revealing through advanced diagnostic methods, well main challenges techniques face. Finally, we explore prospects commercialization.

Language: Английский

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Unveiling the potential of high-entropy materials toward high-energy metal batteries based on conversion reactions: synthesis, structure, properties, and beyond

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104054 - 104054

Published: Jan. 1, 2025

Language: Английский

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The Te-based electrochemistry for high performance rechargeable batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 117, P. 116184 - 116184

Published: March 12, 2025

Language: Английский

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Advances and prospects of low temperature Li S batteries

Applied Energy, Journal Year: 2025, Volume and Issue: 388, P. 125720 - 125720

Published: March 15, 2025

Language: Английский

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Progresses and outlooks of all-solid-state lithium-sulfur batteries for practical development

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162173 - 162173

Published: April 1, 2025

Language: Английский

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Superior sulfur conversion reaction on phosphorus-doped carbon dot/graphene composites for Li-S batteries in a wide working temperature range

Green Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Robust Activity and Stability of P-Doped Fe–Carbon Composites Derived from MOF for Bromate Reduction

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(17), P. 21838 - 21848

Published: April 18, 2024

Iron-based materials are effective for the reductive removal of disinfection byproduct bromate in water, while construction highly stable and active Fe-based with wide pH adaptability remains greatly challenging. In this study, dispersed iron phosphide-decorated porous carbon (Fe2P(x)@P(z)NC-y) was prepared via thermal hydrolysis Fe@ZIF-8, followed by phosphorus doping (P-doping) pyrolysis. The reduction performances Fe2P(x)@P(z)NC-y were evaluated. Characterization results showed that Fe, P, N elements homogeneously distributed carbonaceous matrix. P-doping regulated coordination environment Fe atoms enhanced conductivity, porosity, wettability As a result, Fe2P(x)@P(1.0)NC-950 exhibited reactivity stability an intrinsic kinetic constant (kint) 1.53-1.85 times higher than Fe(x)@NC-950 without P-doping. Furthermore, Fe2P(0.125)@P(1.0)NC-950 displayed superior efficiency prominent very low leaching (4.53-22.98 μg L-1) range 4.0-10.0. used could be regenerated phosphating, maintained 85% its primary activity after five reuse cycles. study clearly demonstrates Fe2P-decorated can applied as robust material aqueous reduction.

Language: Английский

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Emerging redox kinetics promoters for the advanced lithium-sulfur batteries

Materials Today Chemistry, Journal Year: 2024, Volume and Issue: 42, P. 102406 - 102406

Published: Nov. 19, 2024

Language: Английский

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