Three-dimensional MXene coupled CoFe nanoalloys as sulfur host for long-life room-temperature sodium-sulfur batteries DOI Open Access
Xiaoming Yu, Hao Li, Kuan Liang

и другие.

Energy Materials, Год журнала: 2025, Номер 5(8)

Опубликована: Апрель 21, 2025

Room-temperature sodium-sulfur (RT Na-S) batteries are potential candidates for next-generation energy storage systems because of low-cost resources, high theoretical capacity, and density. However, their commercialization is hindered by the inherent shuttle effect, insulation sulfur, slow catalytic conversion. This study proposes a novel approach involving design C/CoFe alloy catalyst coupled with Ti3C2Tx MXene substrate (C/CoFe-MXene) as three-dimensional porous conductive sulfur host. Polysulfide adsorption/catalytic experiments density functional theory calculation confirmed excellent affinity strong conversion ability C/CoFe-MXene composite polysulfides. The heterostructure formed between CoFe promotes Na+ transport accelerates reaction kinetics species. Consequently, assembled RT Na-S host (2.0 mg cm-2) deliver initial specific capacity 572 mAh g-1 at 1 C. Even 5 C, battery achieves ultralong-term cycling over 5,400 cycles retention rate 61.9%, corresponding to fading 0.0089% per cycle, demonstrating outstanding high-rate tolerance. work provides new insights into preparation cathodes surface area activity using catalysts loaded on substrates in batteries.

Язык: Английский

Solvent Regulating Ni–O Bond Improves the Cyclability of High-Voltage Ni-Rich Cathodes in Nonflammable Electrolytes DOI Creative Commons

Xiaomei He,

Rong Xu, Zhijie Wang

и другие.

The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Апрель 4, 2025

Язык: Английский

Процитировано

0

Electrospun heteroatoms-doped porous carbon nanofiber networks as free-standing and binder-free electrode for room temperature sodium sulfur batteries DOI

Yiqiong Wang,

Emayavaramban Indubala,

Chao Ma

и другие.

Journal of Energy Storage, Год журнала: 2025, Номер 121, С. 116575 - 116575

Опубликована: Апрель 11, 2025

Язык: Английский

Процитировано

0

Manipulating Sulfur Redox Kinetics in Rechargeable Metal–Sulfur Batteries: Fundamental Principles and Universal Methodologies DOI
Xiang Huang, Xue Li, Lingfei Zhao

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

The profound understanding of chemical reaction essence and kinetic behaviors is crucial to develop rechargeable battery technologies. Based on multi-electron conversion, sulfur redox reactions hold great promise for establishing low-cost, high-energy-density, longstanding batteries. However, the processes suffer from a series common daunting cruxes, leading incomplete inferior performance when working in These innate challenges include poor reactivity, sluggish charge transmission, severe polysulfide shuttling, high energy barrier, undesirable reversibility. Accordingly, it becomes consensus effectively manipulate kinetics developing competent metal-sulfur Herein, this review centers reactions, within compass electrochemical fundamentals, principles, thermodynamics, dynamics, as well emphatically presents universal methodologies boost unique viewpoint batteries can provide deepened electrochemistry lead new insights into cathode designs configurations, thus accelerating cathodes promoting practical progress high-energy-density

Язык: Английский

Процитировано

0

Cu-Facet Selective Sulfur Chemistry for Ultrastable Sodium–Sulfur Batteries DOI
Xin Xu,

Shiying Ren,

Huan Li

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 20, 2025

Sodium-sulfur batteries face significant challenges due to the high solubility of sodium polysulfides and resulting shuttle effect, which compromise cycling stability efficiency. This study introduces Cu(111) facet-selective reactivity sulfur redox, promotes formation a stable intermediate, NaCu5S3, enabling efficient conversion, rapid ionic transport, fully solid-solid reaction pathway. The system achieves exceptional performance, retaining specific capacity 602 mAh g-1 over 800 cycles at 0.5 A delivering 463 current density 5 in ether-based electrolytes, representing highest rate capability reported for cathodes with content ≥ 60 wt %. Comparative studies Cu(100), Cu(110), aluminum substrates highlight unique Cu(111). Density functional theory calculations further reveal structural electronic interactions between copper polysulfides, clarifying facet-dependent mechanisms. work establishes facet engineering as promising approach modulating redox pathways improving electrochemical reversibility metal-sulfur batteries.

Язык: Английский

Процитировано

0

Three-dimensional MXene coupled CoFe nanoalloys as sulfur host for long-life room-temperature sodium-sulfur batteries DOI Open Access
Xiaoming Yu, Hao Li, Kuan Liang

и другие.

Energy Materials, Год журнала: 2025, Номер 5(8)

Опубликована: Апрель 21, 2025

Room-temperature sodium-sulfur (RT Na-S) batteries are potential candidates for next-generation energy storage systems because of low-cost resources, high theoretical capacity, and density. However, their commercialization is hindered by the inherent shuttle effect, insulation sulfur, slow catalytic conversion. This study proposes a novel approach involving design C/CoFe alloy catalyst coupled with Ti3C2Tx MXene substrate (C/CoFe-MXene) as three-dimensional porous conductive sulfur host. Polysulfide adsorption/catalytic experiments density functional theory calculation confirmed excellent affinity strong conversion ability C/CoFe-MXene composite polysulfides. The heterostructure formed between CoFe promotes Na+ transport accelerates reaction kinetics species. Consequently, assembled RT Na-S host (2.0 mg cm-2) deliver initial specific capacity 572 mAh g-1 at 1 C. Even 5 C, battery achieves ultralong-term cycling over 5,400 cycles retention rate 61.9%, corresponding to fading 0.0089% per cycle, demonstrating outstanding high-rate tolerance. work provides new insights into preparation cathodes surface area activity using catalysts loaded on substrates in batteries.

Язык: Английский

Процитировано

0