Three-dimensional decussated superstructure consisting of carbon nanotubes wrapped with Co3Fe7/Co5.47N nanocrystals for super lithium sulfur batteries

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 43, P. 102488 - 102488

Published: Jan. 1, 2025

Language: Английский

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Regulation of Li₂S Deposition and Dissolution to Achieve an Efficient Bidirectional Lithium–Sulfur Battery

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

Published: Jan. 16, 2025

Abstract Promoting the sulfur reduction reaction (SRR) and evolution (SER) kinetics is crucial for practical lithium–sulfur batteries. However, electrode will be passivated by insulated Li 2 S if blindly accelerated SRR kinetics, meanwhile, high activation energy of lead to premature oxidation (SER), achieving limited catalyst. Here, a nano‐nickel nitrogen‐doped carbon gel material (CG/Ni) induces instantaneous nucleation, further endows fast ion/electron transfer, resulting porous 3D growth instead single lateral growth. Therefore, CG/Ni avoids being passivated, accelerating kinetics. Meanwhile, decreases delithiation barrier, thus, facilitating dissociation. Both experiments theory calculation prove that achieves efficient bidirectional catalysis. Consequently, cathode delivers low‐capacity decay ratio 0.047% per cycle 900 cycles at 5 C. This work unlocks catalyst provide new insight high‐efficiency

Language: Английский

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Lightweight Materials for High Energy Density Lithium–Sulfur Batteries

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

Published: Feb. 28, 2025

Abstract At present, electronic devices such as electric vehicles and mobile phones have increasing requirements for battery energy density. Lithium–sulfur batteries (LSBs) a high theoretical density are considered potential choice realizing the next generation of (2600 W h kg −1 ) batteries. However, actual LSBs is much lower than due to poor conductivity sulfur, serious LiPSs shuttle, low sulfur utilization, so on. Many lightweight materials characterized by surface area designability. The reasonable design modify can reduce proportion inactive substances optimizing electrochemical performance, which crucial improving LSBs. few reviews discuss effect on from perspective whole system. Herein, application in six aspects: liquid electrolyte, solid cathode, anode, separator, current collector discussed. significance use further improvement summarized prospected.

Language: Английский

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Cobalt Catalytic Regulation Engineering in Room‐Temperature Sodium–Sulfur Batteries: Facilitating Rapid Polysulfides Conversion and Delicate Na₂S Nucleation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract The sluggish conversion kinetics and uneven deposition of sodium sulfide (Na 2 S) pose significant obstacles to the practical implementation room temperature sodium–sulfur (RT Na─S) batteries. To tackle these challenges, herein, a cathode host (Co‐NMCN) that enables rapid polysulfides delicate Na S nucleation is developed via integrating Co nanoparticles into N‐doping multilayer carbon network. freestanding network expedites electronic transport relives electrode expansion, while perform strong chemical adsorption with soluble polysulfide (NaPSs) Co─S bonds exhibit remarkable electrocatalytic effect on multi‐electron NaPSs. Density functional theory (DFT) calculations reveal low energy barrier for NaPSs diffusion Na₂S oxidation, which facilitates uniform across scaffold in controlled 3D process. This effectively mitigates formation irreversible by‐products prevents electrocatalyst passivation, thus enhancing overall reaction efficiency. As result, as‐prepared S@Co‐NMCN delivers an impressive reversible capacity 934.2 mA h g −1 at 0.5C maintains decay rate 0.064% per cycle over 800 cycles 0.5C.

Language: Английский

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A strongly coupled FeS₂@TiO₂ heterostructure with an island-like structure for high-efficiency lithium storage

Materials Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Considering the high theoretical capacity and semiconductor properties, a strongly coupled heterostructure composed of FeS 2 (p-type semiconductor) TiO (n-type was constructed as high-performance anode for lithium ion batteries.

Language: Английский

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Influence of Electrolyte Additives on the Corrosion Behavior of Current Collectors for Lithium-Sulfur Batteries

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

Published: Feb. 3, 2025

Language: Английский

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P doping adjusts the coordination structure of single atoms to accelerate the catalytic bidirectional redox reaction in Li–S batteries

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Language: Английский

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An electrochemical-thermal–mechanical coupling model for quantitative comparison on battery wound structures

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

Published: April 28, 2025

Language: Английский

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MXene-based sodium–sulfur batteries: synthesis, applications and perspectives

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 2, 2024

Language: Английский

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Accelerated Ion‐Electron Transport in Bi‐Heterostructures Constructed Based on Ohmic Contacts for Efficient Bi‐Directional Catalysis of Lithium‐Sulfur Batteries

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

Published: Nov. 9, 2024

Although lithium-sulfur batteries have satisfactory theoretical specific capacity and energy density, they are difficult to further commercialize due the shuttle effect of soluble polysulfides slow sulfur oxidation kinetics. Based on this, in this work, catalyst MXene-VS

Language: Английский

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