Fine‐Grain Strengthened Vanadium‐Based Electrocatalysts via Recrystallization Maneuver for Lithium‐Sulfur Batteries DOI

Kuiyou Wang,

Chensheng Wang, Henghui Xu

et al.

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

Published: April 25, 2025

Abstract The rational design of abundant and efficient active sites for lithium‐sulfur electrocatalysis remains a long‐standing challenge, wherein the optimization catalyst activity by manipulating their sizes has stimulated extensive exploration. Herein, fine‐grain strengthening strategy is proposed vanadium‐nitrogen‐carbon (VNC) comprising vanadium (V)‐based units, throughout modulating size surface energy via salt‐template recrystallization. recrystallization frequency dictated to precisely tune effect. Through rigorous procedure 5‐time recrystallization, V‐based units realize reduction from 209 99 Å, increase 0.16 0.32 eV Å −2 , along with specific area adjustment 41.5 206.3 m 2 g −1 . Accordingly, effect effectively activates in i) enhancing sulfur species adsorption propelling Li S nucleation/decomposition reaction kinetics; ii) guiding high‐flux uniform lithium‐ions thus promoting lithium plating/stripping behaviors. Consequently, battery demonstrates an initial discharge capacity 1236.4 mA h at 0.2 C. Even after 600 cycles 2.0 C, cycle‐to‐cycle attenuation merely 0.048%. Furthermore, pouch cell strengthened VNC can proceed stable cycling operation 1.0 ensuring reliable consistent power supply electronic gadgets.

Language: Английский

MOF‐Based Electrocatalysts for Water Electrolysis, Energy Storage, and Sensing: Progress and Insights DOI

Tao Pan,

Yingying Wang, Sicong Zhang

et al.

The Chemical Record, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Metal‐organic frameworks (MOFs) and their derivatives have shown broad application prospects in fields such as water electrolysis, electrochemical energy storage, sensing due to high specific surface area, tunable structures, abundant active sites. This article provides a comprehensive overview of our research group′s recent advancements developing MOF‐based electrocatalysts for Oxygen Evolution Reaction (OER) Urea Oxidation (UOR) at anodes, well Hydrogen (HER) cathodes during electrolysis. Furthermore, we integrated these catalysts into practical applications, including metal‐air batteries, lithium‐sulfur non‐enzymatic glucose sensors. To further demonstrate the innovative contributions work, systematically compare it with advanced work by other groups. Based on findings performance benchmarking analyses, identify critical challenges that must be addressed advance MOFs‐based toward next‐generation conversion sensing.

Language: Английский

Citations

0
Fine‐Grain Strengthened Vanadium‐Based Electrocatalysts via Recrystallization Maneuver for Lithium‐Sulfur Batteries DOI

Kuiyou Wang,

Chensheng Wang, Henghui Xu

et al.

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

Published: April 25, 2025

Abstract The rational design of abundant and efficient active sites for lithium‐sulfur electrocatalysis remains a long‐standing challenge, wherein the optimization catalyst activity by manipulating their sizes has stimulated extensive exploration. Herein, fine‐grain strengthening strategy is proposed vanadium‐nitrogen‐carbon (VNC) comprising vanadium (V)‐based units, throughout modulating size surface energy via salt‐template recrystallization. recrystallization frequency dictated to precisely tune effect. Through rigorous procedure 5‐time recrystallization, V‐based units realize reduction from 209 99 Å, increase 0.16 0.32 eV Å −2 , along with specific area adjustment 41.5 206.3 m 2 g −1 . Accordingly, effect effectively activates in i) enhancing sulfur species adsorption propelling Li S nucleation/decomposition reaction kinetics; ii) guiding high‐flux uniform lithium‐ions thus promoting lithium plating/stripping behaviors. Consequently, battery demonstrates an initial discharge capacity 1236.4 mA h at 0.2 C. Even after 600 cycles 2.0 C, cycle‐to‐cycle attenuation merely 0.048%. Furthermore, pouch cell strengthened VNC can proceed stable cycling operation 1.0 ensuring reliable consistent power supply electronic gadgets.

Language: Английский

Citations

0