Challenges and Advances in Wide‐Temperature Electrolytes for Lithium‐Ion Batteries

ChemElectroChem, Journal Year: 2024, Volume and Issue: 11(10)

Published: April 24, 2024

Abstract Lithium‐ion batteries (LIBs) have gained widespread attention due to their numerous advantages, including high energy density, prolonged cycle life, and environmental friendliness. Nevertheless, electrochemical performance deteriorates rapidly under extreme temperature conditions, accompanied by a series of safety issues. Electrolyte optimization has emerged as crucial feasible strategy expand the operational range LIBs. This review comprehensively summarizes challenges, advances, characterization methodologies electrolytes at both subzero elevated temperatures. Initially, it discusses degradation mechanisms different types temperatures, integrates recent offers insights into future research directions. Subsequently, various experimental techniques are systematically presented evaluate fundamental physical properties, stability, dynamic behaviors in non‐ambient environments. Finally, also provides relevant computational methods across electronic, molecular, macroscopic scales, explores application high‐throughput this field. valuable guidance for breaking working limits promoting development next‐generation

Language: Английский

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Efficient Chemical Prelithiation with Modificatory Li⁺ Solvation Structure Enabling Spatially Homogeneous SEI toward High Performance SiO_x Anode^†

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: 42(17), P. 2056 - 2065

Published: April 29, 2024

Comprehensive Summary Chemical prelithiation is widely proven to be an effective strategy address the low initial coulombic efficiency (ICE) of promising SiO x anode. Though reagent composition has been explored, Li + solvation structure, which practically plays cornerstone role in ability, rate, uniformility, rarely explored. A novel environmentally‐friendly with weak solvent cyclopentyl methyl ether (CPME) proposed that enables both improved ICE and spatial homogeneous solid electrolyte interphase (SEI). And behavior mechanism were explored focused on structure. Both theoretical investigation spectroscopic results suggest feature CPME reduces coordination number decreases desolvation energy. The optimized structure high‐efficiency ensures horizontal homogenization mechanical properties SEI. Moreover, accompanied molecules preferentially occupy positions SEI, reducing likelihood LiPF 6 decomposition promoting longitudinal Consequently, efficient homogenous impressive 109.52% cycling performance 80.77% retained after 300 cycles via just 5 min soaking. Furthermore, full cells LiNi 0.83 Co 0.12 Mn 0.05 O 2 (NCM831205) cathode display enhancement energy density 179.74% up 648.35 Wh·kg –1 .

Language: Английский

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Anionic Solvation Transition at Low Temperatures for Reversible Anodes in Lithium–Oxygen Batteries

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Li-O

Language: Английский

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Regulating Non‐Equilibrium Solvation Structure in Locally Concentrated Ionic Liquid Electrolytes for Wide‐Temperature and High‐Voltage Lithium Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Oct. 4, 2024

The development of high-voltage lithium metal batteries (LMBs) encounters significant challenges due to aggressive electrode chemistry. Recently, locally concentrated ionic liquid electrolytes (LCILEs) have garnered attention for their exceptional stability with both Li anodes and cathodes. However, there remains a limited understanding how diluents in LCILEs affect the thermodynamic solvation structure transportation dynamics

Language: Английский

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Weakly Solvating Electrolytes for Safe and Fast-Charging Sodium Metal Batteries

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(51), P. 35229 - 35241

Published: Dec. 13, 2024

Electrolytes for high-performance sodium metal batteries (SMBs) are expected to have high electrode compatibility, low solvation energy, and nonflammability. However, conventional flammable carbonate ester electrolytes show Na

Language: Английский

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