Linking D‐Band Center Modulation with Rapid Reversible Sulfur Conversion Kinetics via Structural Engineering of VS₂ DOI

Wenlong Xia,

Hengzhi Liu,

Yufang Chen

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 31, 2024

The rapid catalytic conversion toward polysulfides is considered to be an advantageous approach boost the reaction kinetics and inhibit shuttle effect in lithium-sulfur (Li─S) batteries. However, prediction of high activity Li─S catalysts has become challenging given carelessness relationship between important electronic characteristics activity. Herein, relationships D-band regulation with are described. Through combination experimental theoretical analysis, opportune upward shift center results a favorable interaction polysulfides, controlling adsorption behavior polysulfides. In addition, electron achieved by moderately moving up further reduces energy barrier through hybridization Based on this, composite catalyst Mo doped VS

Language: Английский

Construction of MXenes/COFs heterojunctions for photo/electrocatalytic applications: Opportunities and challenges DOI

Min Jian,

Yuhua Wang

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160631 - 160631

Published: Feb. 1, 2025

Language: Английский

Citations

3
Covalent triazine-based framework incorporating keto-enol tautomerization as modified separator for boosting the performance of lithium-sulfur batteries DOI
Wei Xie, Yue Hu, Bo Sun

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179042 - 179042

Published: Feb. 1, 2025

Language: Английский

Citations

2
Engineering covalent organic frameworks to enhance interfacial lithium-ion flux redistribution in dendrite-free lithium–sulfur batteries DOI
Tianli Li, Hua Hao, Jian Wang

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The fBTTP-COF material was prepared through a condensation reaction, serving as shuttling blocker and kinetics accelerator.

Language: Английский

Citations

2
MXene functionalized cathodes, anodes, and separators for batteries DOI

Jiakang Shi,

Meng Du, Yihao Chen

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160809 - 160809

Published: Feb. 1, 2025

Language: Английский

Citations

1
Curvature-Induced Electron Delocalization Activates the Bifunctional Catalytic Activity of COF/MXene for High-Performance Lithium–Sulfur Batteries DOI Creative Commons
Yanhui Zhuang, Hao Yang, Yuhang Li

et al.

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

Citations

1
Developing a One‐Pot Strategy to Synthesize Metal–Covalent Organic Frameworks as Catalysts for Polysulfide Conversion and Ion Calibrators for Lithium Deposition DOI Open Access

Ke Yang,

Fei Zhao, Chan Li

et al.

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

Published: Feb. 11, 2025

Abstract Introducing metals into covalent organic frameworks (COFs) to synthesize metal‐COFs (MCOFs) presents novel opportunities for designing highly efficient catalysts address the sluggish conversion of polysulfides and developing effective ion calibrators mitigate uncontrolled lithium dendrite growth in lithium–sulfur batteries (LSBs). Herein, a facile one‐pot strategy is proposed integrate Zn single atoms COF framework through coordination with N O atoms. Comprehensive characterizations microstructure, morphology, chemical environment provide convincing evidence that exists Zn‐COF as +2 state. Leveraging synergistic advantages high content (12.43%) an ordered porous structure, demonstrates excellent catalytic activity polysulfide conversion, effectively suppressing shuttle effect enhancing reaction kinetics. Additionally, structure promotes uniform lithium‐ion flow, facilitating homogeneous deposition. Consequently, comprehensive electrochemical performance LSBs significantly improved under both conventional high‐sulfur‐loading conditions. This work simple scalable integrating COFs, thereby introducing robust sites structures LSBs. It offers valuable insights advancing catalysis inhibition strategies.

Language: Английский

Citations

0
High Performance Lithium–Sulfur Battery with a Multifunctional Organic Nitrogen–Fluorine Compounds-Modified Electrolyte DOI

Jianxing Guo,

Caili He, Zhenguo Chi

et al.

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

Published: March 31, 2025

Language: Английский

Citations

0
COF nanotubes/2D nanosheets heterojunction for superior photocatalytic bactericidal activity even at low concentration and weak light DOI

Saijun Wu,

Minglong Yan,

Yuchen Zhong

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 138111 - 138111

Published: April 1, 2025

Language: Английский

Citations

0
Two-dimensional salen-based covalent organic frameworks with highly electronegative groups as separators for high stability lithium–sulfur batteries DOI

Xiaoyu Xu,

Yingkai Guan,

Bo Sun

et al.

Polymer Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The salen-based Salen-TAPT-COF was prepared and used as a modified separator for boosting the performance of Li–S batteries.

Language: Английский

Citations

0
Construction of MXene-Based Heterostructured Hybrid Separators for Lithium–Sulfur Batteries DOI Creative Commons

Xiao Zhang,

Guangxu Jin, Min Mao

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1833 - 1833

Published: April 19, 2025

The advancement of lithium-sulfur (Li-S) batteries has been hindered by the shuttle effect lithium polysulfides (LiPSs) and sluggish redox kinetics. engineering functional hybrid separators is a relatively simple effective coping strategy. Layered transition-metal carbides, nitrides, carbonitrides, class emerging two-dimensional materials termed MXenes, have gained popularity as catalytic for Li-S due to their metallic conductivity, tunable surface chemistry, terminal groups. Nonetheless, self-stacking flaws easy oxidation MXenes pose disadvantages, developing MXene-based heterostructures anticipated circumvent these issues yield other remarkable physicochemical characteristics. Herein, recent advances in construction heterostructured improving performance are reviewed. diverse conformational forms constitutive relationships with LiPS conversion discussed, general principles MXene chemistry alterations heterostructure designs enhancing electrochemical summarized. Lastly, tangible challenges addressed, advisable insights future research shared. This review aims highlight immense superiority battery separator modification inspire researchers.

Language: Английский

Citations

0