Preparation and properties of Sn composite C-coated Li4Ti5O12 materials for lithium–sulfur battery anodes

Journal of Materials Science Materials in Electronics, Journal Year: 2024, Volume and Issue: 35(1)

Published: Jan. 1, 2024

Language: Английский

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Ion transport regulation of polyimide separator for safe and durable Li-metal battery

Journal of Power Sources, Journal Year: 2023, Volume and Issue: 591, P. 233853 - 233853

Published: Nov. 18, 2023

Language: Английский

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SnS/SnS₂ Heterostructures Embedded in Hierarchical Porous Carbon as Polysulfides Immobilizer for High-Performance Lithium–Sulfur Batteries

Langmuir, Journal Year: 2024, Volume and Issue: 40(10), P. 5527 - 5534

Published: Feb. 26, 2024

Driven by the strong adsorptive and catalytic ability of metal sulfides for soluble polysulfides, it is considered as a potential mediator to resolve problems shuttle effect slow reaction kinetics polysulfides in lithium−sulfur (Li−S) batteries. However, their further development limited poor electrical conductivity bad long-term durability. Herein, one type new catalyst composed SnS/SnS2 heterostructures on hierarchical porous carbon (denoted SnS/SnS2–HPC) simple hydrothermal method reported used an interlayer coating conventional separator blocking polysulfides. The SnS/SnS2–HPC integrates advantages conductive network promoting transport electrons enhanced electrocatalyst accelerating conversion. As result, such cell coupled with exhibits lifespan 1200 cycles. This work provides configuration using built-in electric field formed from p-n heterojunction improve performance Li–S

Language: Английский

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Developing a Multifunctional Cathode for Photoassisted Lithium–Sulfur Battery

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Integration of solar cell and secondary battery cannot only promote energy application but also improve the electrochemical performance battery. Lithium-sulfur (LSB) is an ideal candidate for photoassisted batteries owing to its high theoretical capacity. Unfortunately, researches related combination LSB are relatively lacking. Herein, a freestanding photoelectrode developed lithium-sulfur (PALSB) by constructing heterogeneous structured Au@N-TiO

Language: Английский

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Local structure of amorphous sulfur in carbon–sulfur composites for all-solid-state lithium-sulfur batteries

Communications Chemistry, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 14, 2025

All-solid-state (ASS) batteries are a promising solution to achieve carbon neutrality. ASS lithium–sulfur (Li-S) stand out due their improved safety, achieved by replacing organic solvents, which prone leakage and fire, with solid electrolytes. In addition, these offer the benefits of higher capacity absence rare metals. However, low electronic conductivity sulfur poses major challenge for Li-S batteries. To address this challenge, is often combined porous carbon. Despite standard practice, local structure in composites remains unclear. Based on small-angle X-ray scattering pair distribution function analysis, we discovered that carbon–sulfur formed via melt diffusion amorphous primarily comprises S8 ring-shaped structures. The composite demonstrated high specific 1625 mAh g−1 (97% theoretical sulfur). This remarkable performance attributed extensive contact area between sulfur, results an excellent interface through diffusion. insights gained into analytical approaches employed enhanced our understanding electrochemical reactions batteries, thereby aiding optimization material design. demonstrate great promise next-generation energy storage, but challenge. Here, authors analyze all-solid-state cell.

Language: Английский

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Hydroxy-titanium pillared montmorillonite modified separator with strong adsorption and fast catalytic conversion of polysulfides enables high-performance lithium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161151 - 161151

Published: Feb. 1, 2025

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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Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability

Electrochemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 107926 - 107926

Published: April 1, 2025

Language: Английский

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The Confined Protonated Pyridinium within Covalent Organic Frameworks Symmetrically Intensifying the Sulfur-Species-Related Redox Reactions in Lithium–Sulfur Batteries

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

Published: April 29, 2025

Speeding up ion transfer in lithium-sulfur batteries (LSBs) and mitigating kinetic sluggishness are key strategies for high specific capacities. From the perspective of balancing promoting redox reactions LSBs, protonated pyridinium covalent organic frameworks (COFs) (PDTA-COF:TFSI-) synthesized. PDTA-COF:TFSI- topologically grows self-assembles into a one-dimensional (1D) fiber-like morphology. These 1D COFs assemblies finally form three-dimensional (3D) network with confined hexagonal cavities about 2.3 nm diameter. Owing to these pyridiniums, serve as microreactors sulfur-species-related reactions. has electrolyte affinity guarantees targeted toward pyridinium. Due reduced mass barrier ions, Li+ transference number ionic conductivity reach 0.81 1.62 mS cm-1 at 25 °C, respectively. Density functional theory (DFT) calculations Tafel performances confirm that, owing integration aforementioned multiple functions within microreactors, symmetrically intensified, mediated by thiosulfate through δ+-charged transition state. The (-)Li|PDTA-COF:TFSI-@PP|S(+) cell demonstrates reversible capacity 1330.8 mAh g-1 retention rate 96.4%, even after 400 cycles 0.1C.

Language: Английский

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A separator coated with commercial LiFePO₄ and conductive carbon for Li–S battery with good cycling performance

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(37), P. 19870 - 19876

Published: Jan. 1, 2023

A prepared multifunctional separator for Li–S batteries shows no corrosions and lithium dendrites in after-cycling anodes, greatly suppressed ‘shuttle effect’, high utilization of active sulfur, reduced charge transfer resistance, high-performance are achieved.

Language: Английский

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