Synergistic Catalytic Effect of Multiple Active Sites in High-Entropy MAX Materials for Lithium Polysulfide Enables High-Performance Lithium–Sulfur Batteries DOI
Yongjie Ye, Sisi Liu, Yixin Luo

et al.

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

Published: May 27, 2025

Language: Английский

Gd-MOF-Derived GdS/C for the Modification of Separators in Lithium–Sulfur Batteries DOI
Hexiang Xu, Xinye Qian, Shuailong Zhao

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Because of its excellent energy density and specific capacity, lithium-sulfur batteries (LSBs) are considered one the most promising storage devices. However, shuttle effect slow transformation polysulfides hinder their practical application. To address effect, we used a Gd-MOF precursor for high-temperature carbonization to obtain GdS@C composite as modification layer LSB separators. The strong affinity metal sulfide sulfur enhances chemical anchoring catalyzes transformation. By employing separator material, effectively suppressed improved electrochemical performance. Under load 3 mg cm-2, initial discharge capacity with GdS@C-modified was 888.9 mAh g-1 at 0.5 C; after 500 cycles, it remained 435.6 retention rate 49.0%. With an increased loading 5 first cycle 0.1 C reached 908.4 g-1; 100 still 743.9 impressive 81.9%. These results demonstrate that material significantly performance LSBs showcases broad application potential.

Language: Английский

Citations

0
Single Atomic Co Decorated Mesoporous Carbon/MXene Heterostructure as Redox Promoters for High-Stable Li-S Battery DOI

Jiaheng Bao,

Xiang Li,

Tao Rong

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120229 - 120229

Published: March 1, 2025

Language: Английский

Citations

0
Investigating MA MX–NiSe2@C heterostructures to Boost reaction kinetics in Lithium-Sulfur batteries DOI
Shasha Wei, Yayun Zheng, Jianfeng Liu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161575 - 161575

Published: March 1, 2025

Language: Английский

Citations

0
Non-equilibrium Plasma Activated Ultradurable Molybdenum Oxycarbide Electrocatalysts for Acidic Hydrogen Evolution up to 10 A cm-2 DOI Creative Commons
Guoping Xiong, Shiwen Wu, Taesoon Hwang

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract Electrocatalytic hydrogen evolution in acidic media at industrial-level current densities is limited by high overpotential, performance degradation, and thus low throughput. To address these issues, we developed a novel nanoedge-enriched molybdenum oxycarbide (MoOxCy) electrocatalysts with uniform phase non-equilibrium plasma-enhanced chemical vapor deposition. The vertically standing MoOxCy exhibits overpotential of 415 mV outstanding long-term operational stability (~ 0.11% degradation over 1,000 h) up to 10 A cm− 2, corresponding an ultrahigh throughput 4,477.4 L 2 lifetime 407,033 which exceed the department energy (DOE) targets 1,253.7 100,503 respectively. Molybdenum catalysts outperform state-of-the-art transition metal- even noble metal-based (throughput 9 ~ 269 8 2) more than order magnitude for three orders key mechanisms enabling catalytic are achieved incorporating carbon into MoO2 lattices, reduces valence state Mo, leading weakened binding Mo-H improved performance. Density functional theory results suggest that presence atoms increases between Mo adjacent atoms, improving operating under harsh conditions. This work paves way development new practical industrial electrocatalytic evolution.

Language: Английский

Citations

0
Co0.7Fe0.3/Co alloy nanoparticles encapsulated in N-doped carbon polyhedrons as efficient catalysts for advanced lithium-sulfur batteries DOI

Haiyang Xing,

Pu Yang,

Zhuohui Sun

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 691, P. 137439 - 137439

Published: March 24, 2025

Language: Английский

Citations

0
Zinc‐Doping‐Induced Electronic States Modulation of Molybdenum Carbide: Expediting Rate‐Determining Steps of Sulfur Conversion in Lithium‐Sulfur Batteries DOI Creative Commons
Bin Qin, Yanmei Li, Qun Wang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Abstract Enhancing Li 2 S deposition and oxidation kinetics in lithium‐sulfur batteries, especially the potential‐limiting step under lean electrolyte, can be effectively achieved by developing conductive catalysts. In this study, using ZnMoO 4 as precursors, Zn‐doped molybdenum carbide microflowers (Zn‐Mo C) composed of speared porous sheets are fabricated with a hierarchically ordered structure. Density functional theory calculations indicate that Zn doping shifts d‐band center on Mo atoms C upward, promotes elevation certain antibonding orbitals Mo─S bonds above Fermi level, enhances d‐p interaction between lithium polysulfides (LiPSs) catalysts, weakens both S─S Li─S LiPSs. Incorporating significantly reduces Gibbs free energy barrier for rate‐limiting → conversion, from 0.52 eV to just 0.05 C. Thus, synthesized Zn‐Mo demonstrates impressive bifunctional electrocatalytic performance, advancing sulfur reduction decomposition. Moreover, modification charge transfer within C/LiPSs system, synergistically accelerating oxidation. The C/S cathode electrochemical achieves remarkable cycling stability minimal capacity decay 0.021% per cycle over 1000 cycles at 5 C, underscoring its potential high‐energy applications.

Language: Английский

Citations

0
Coupling Ultrafine Transition Metal and Rare Earth Oxide Nanocrystals toward Highly Active and Stable Catalysts for Lithium–Sulfur Batteries DOI
Biao Wang,

Zhanqi Xing,

Suyue Jia

et al.

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

Published: April 9, 2025

Electrocatalysts are extremely important for accelerating the redox reaction kinetics in lithium-sulfur (Li-S) batteries. As two kinds of competitive electrocatalysts, however, transition metals (TMs) usually react with sulfur species resulting passivated surfaces, while stable rare earth oxides (REOs) exhibit low catalytic activity. Therefore, developing promising catalysts long-term activity and stability is a crucial task. Herein, TMs-REOs heterojunction catalyst consisting N-doped carbon shell containing embedded ultrafine Gd2O3 Co nanocrystals (named as Gd2O3/Co@NC) elaborately designed fabricated. Experimental theoretical results reveal that strong coupling between large number heterojunctions endows moderate adsorption satisfactory durability. Consequently, cells assembled Gd2O3/Co@NC modified separator high rate capacity (628.0 mAh g-1 at 4C), cycling (504.2 after 500 cycles 2C), utilization (4.8 cm-2 under loading 5.1 mg cm-2). This study highlights invalidation mechanism TMs Li-S batteries will inspire design advanced through REOs.

Language: Английский

Citations

0
Partial boronization of transition metal within double heterostructure nanosheet achieves high-rate and long-cycling lithium-sulfur batteries DOI
Huiying Wei, Bo‐Hyoung Jin, Qing Jiang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 693, P. 137618 - 137618

Published: April 16, 2025

Language: Английский

Citations

0
Surface reconstruction for a spinel-type electrocatalyst towards fast sulfur conversion in advanced lithium-sulfur batteries DOI
Hao Zhang, Peng Zeng, Xiaomei Zhao

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162806 - 162806

Published: April 1, 2025

Language: Английский

Citations

0
MoO2–Stabilized MoS2 Heterojunction Catalyst for Enhanced Lithium–Sulfur Battery DOI
Jun Jiang, Yanwen Ding, Shugang Pan

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Language: Английский

Citations

0