Optimizing Adsorption‐Catalysis Synergy to Accelerate Sulfur Conversion Kinetics in Room‐Temperature Na‐S Batteries DOI

Yujie Shi,

Limou Zhang,

Ting Wang

et al.

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

Published: April 25, 2025

Abstract Room‐temperature sodium‐sulfur (RT Na‐S) batteries are expected to become the next‐generation energy storage system due their ultrahigh theoretically density of 1274 Wh kg −1 , abundant sulfur resource, and low cost. However, practical application is hindered by challenges severe shuttle effect sluggish S conversion kinetics. In this study, a series nano‐sized nickel‐based chalcogenides designed fabricated as electrocatalysts for cathode. The p orbitals originated from different anions show great on partial‐filled d orbital metal Ni site, which further regulates electronic states catalytic site. Theoretical experimental results confirm excellent electrocatalytic performance NiSe electrocatalyst with reaction barriers, moderate adsorption capability, strong ability, consistent Sabatier's principle. optimized catalyst presents high reversible capacity 720.4 mAh g durability over 200 cycles at 0.2 A retained 401.4 after 1000 2 in RT Na‐S batteries. This work balancing toward polysulfides via modulation d/p active sites.

Language: Английский

Progress and perspectives on electrocatalysis in room-temperature Na–S batteries DOI
Xiang Huang, Xue Li,

Yang Ming-yue

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Room-temperature sodium–sulfur (RT Na–S) batteries can allow an ultrahigh specific capacity and a high energy density but unfortunately suffer from lot of intractable challenges sulfur cathodes.

Language: Английский

Citations

0
Design Strategies of S8 Molecule Cathodes for Room-Temperature Na-S Batteries DOI Creative Commons

Shasha Shi,

Ziqi Cai, Cimang Lu

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(5), P. 330 - 330

Published: Feb. 20, 2025

Sodium-sulfur batteries have been provided as a highly attractive solution for large-scale energy storage, benefiting from their substantial storage capacity, the abundance of raw materials, and cost-effectiveness. Nevertheless, conventional sodium-sulfur subject critique due to high operating temperature costly maintenance. In contrast, room-temperature exhibit significant advantages in these regards. The most commonly utilized cathode active material is S8 molecule, whose intricate transformation process plays crucial role enhancing battery capacity. However, this concomitantly generates quantity polysulfide intermediates, leading diminished kinetics reduced utilization efficiency. pivotal strategy design catalysts with adsorption catalytic functionalities, which can be applied cathode. Herein, we present summary current research progress terms nanostructure engineering, catalyst strategies, regulating sulfur species conversion pathways perspective high-performance host strategy. A comprehensive analysis performance four perspectives: metal catalysts, compound atomically dispersed heterojunctions. Finally, analyze bottlenecks challenges, offering some thoughts suggestions overcoming issues.

Language: Английский

Citations

0
Improving Conversion Kinetics of Sodium Polysulfides through Electron Spillover Effect with V/Co Dual‐Atomic Site Anchoring on N‐Doped MXene DOI Open Access
Ronghui Liu, Chao Feng, Pengfei Wu

et al.

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

Published: March 30, 2025

Abstract Room‐temperature sodium─sulfur (RT/Na─S) batteries, with a theoretical capacity of 1672 mAh g⁻ 1 , face challenges such as the insulating nature sulfur and slow redox kinetics, particularly during complex liquid–solid (Na 2 S 4 →Na ) solid–solid S) conversions. Herein, vanadium‐cobalt (VCo) diatomic sites implanted in vacancy‐rich N‐doped MXene (VCo DACs/N‐MXene) are introduced to address these issues. The N‐bridged VCo pairs demonstrated their strong electronic interactions also validated through experimental analyses. RT/Na─S battery optimized DACs/N‐MXene delivers an average 1255.3 at 0.1 C remarkable cycling stability, only ≈0.001% decay per cycle over 1500 cycles C. DFT calculations reveal that enhance reaction kinetics by reducing Gibbs free energy for polysulfide conversions, notably conversion barriers from 1.17/0.96 eV V/Co SACs/N‐MXene 0.53 DACs/N‐MXene. XANES analyses attribute this improvement unique electron spillover effect, facilitating efficient transport charge discharge. This work highlights potential optimizing configurations coordinating environments activate bidirectional improved longevity batteries.

Language: Английский

Citations

0
Optimizing Adsorption‐Catalysis Synergy to Accelerate Sulfur Conversion Kinetics in Room‐Temperature Na‐S Batteries DOI

Yujie Shi,

Limou Zhang,

Ting Wang

et al.

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

Published: April 25, 2025

Abstract Room‐temperature sodium‐sulfur (RT Na‐S) batteries are expected to become the next‐generation energy storage system due their ultrahigh theoretically density of 1274 Wh kg −1 , abundant sulfur resource, and low cost. However, practical application is hindered by challenges severe shuttle effect sluggish S conversion kinetics. In this study, a series nano‐sized nickel‐based chalcogenides designed fabricated as electrocatalysts for cathode. The p orbitals originated from different anions show great on partial‐filled d orbital metal Ni site, which further regulates electronic states catalytic site. Theoretical experimental results confirm excellent electrocatalytic performance NiSe electrocatalyst with reaction barriers, moderate adsorption capability, strong ability, consistent Sabatier's principle. optimized catalyst presents high reversible capacity 720.4 mAh g durability over 200 cycles at 0.2 A retained 401.4 after 1000 2 in RT Na‐S batteries. This work balancing toward polysulfides via modulation d/p active sites.

Language: Английский

Citations

0