Physical Field Effects to Suppress Polysulfide Shuttling in Lithium–Sulfur Battery

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

Published: Oct. 14, 2024

Lithium-sulfur batteries (LSB) with high theoretical energy density are plagued by the infamous shuttle effect of lithium polysulfide (LPS) and sluggish sulfur reduction/evolution reaction. Extensive research is conducted on how to suppress effects, including physical structure confinement engineering, chemical adsorption strategy, design redox catalysts. Recently, rational mitigate effects enhance reaction kinetics based field has been widely studied, providing a more fundamental understanding interactions species. Herein, focused their methods mechanisms interaction summarized systematically LPS. Overall, working principle LSB system, origin effect, kinetic trouble in briefly described. Then, mechanism application materials concepts external field-assisted elaborated, electrostatic force, built-in electric field, spin state regulation, strain magnetic photoassisted other strategies pivotally elaborated discussed. Finally, potential directions enhancing performance weakening high-energy anticipated.

Language: Английский

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Challenge toward Complex g-C₃N₄/Titanates/Titania Nanoarchitectures: Top-Down versus Bottom-Up Approach

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

A comprehensive investigation of CN–TiO2 and CN–TNT/TiO2 heterostructures was made, taking into account, in particular, the role synthesis methods, i.e., ex situ (top-down) (bottom-up), on structural, morphological, optical properties. It shown that samples, obtained from different routes, although with similar elemental composition functional/terminal groups, have peculiar differences terms structure, morphology, surface Concerning samples (from an approach), CN-functionalized anatase TiO2 particles forming aggregates a lower BET area are obtained, whereas approach) shows more uniform higher due to presence nitrogen-rich which prevents titanate nanotube conversion particles. FTIR X-ray Photoelectron Spectroscopy (XPS) also confirm formation C–Ti bonds at particle for both samples. The properties show progressive band gap narrowing pristine nanoparticles CN–TNT/TiO2. Band alignment analysis confirms type-II heterojunctions composites, thus supporting effective charge separation enhanced visible light absorption. These results suggest heterostructures, their tailored electronic properties, significant potential photocatalytic applications environmental remediation energy fields. TiO2-based materials, doped carbon nitrogen, were investigated using multitechnique approach, including microscopies (field emission scanning electron microscopy, high-resolution transmission microscopy atomic force microscopy), EDS mapping, spectroscopies (FTIR, XPS, UV–vis), diffraction, porosity analyses.

Language: Английский

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A Comprehensive Review on Lithium-Ion Battery Lifetime Prediction and Aging Mechanism Analysis

Batteries, Journal Year: 2025, Volume and Issue: 11(4), P. 127 - 127

Published: March 26, 2025

Lithium-ion batteries experience degradation with each cycle, and while aging-related deterioration cannot be entirely prevented, understanding its underlying mechanisms is crucial to slowing it down. The aging processes in these are complex influenced by factors such as battery chemistry, electrochemical reactions, operational conditions. Key stressors including depth of discharge, charge/discharge rates, cycle count, temperature fluctuations or extreme conditions play a significant role accelerating degradation, making them central analysis. Battery directly impacts power, energy density, reliability, presenting substantial challenge extending lifespan across diverse applications. This paper provides comprehensive review methods for modeling analyzing aging, focusing on essential indicators assessing the health status lithium-ion batteries. It examines principles modeling, which vital applications portable electronics, electric vehicles, grid storage systems. work aims advance technology promote sustainable resource use variables influencing durability. Synthesizing wide array studies identifies gaps current methodologies highlights innovative approaches accurate remaining useful life (RUL) estimation. introduces emerging strategies that leverage advanced algorithms improve predictive model precision, ultimately driving enhancements performance supporting their integration into various systems, from vehicles renewable infrastructures.

Language: Английский

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Exquisite hybridized electrocatalyst with moderate selenium element integration for reliable lithium-sulfur batteries

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137600 - 137600

Published: April 1, 2025

Language: Английский

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