Advanced Ether‐Based Electrolytes for Lithium‐ion Batteries

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

Published: July 14, 2024

Abstract Lithium‐ion batteries (LIBs) have emerged as vital elements of energy storage systems permeating every facet modern living, particularly in portable electronic devices and electric vehicles. However, with the sustained economic social development, new‐generation LIBs high density, wide operating temperature range, fast charge, safety are eagerly expected, while conventional ethylene carbonate (EC)‐based electrolytes fail to satisfy corresponding requirements. Comparatively, ether‐based electrolyte fascinating properties recently been revived fields, many advanced exciting performances under developed. This review provides an extensive overview latest breakthroughs concerning applied intercalation cathodes. To systematically outline progression electrolytes, this is categorized from perspective anodes follows: i) graphite anode‐based LIBs; ii) silicon iii) lithium metal LIBs.

Language: Английский

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Solvent-derived organic-rich SEI enables capacity enhancement for low-temperature lithium metal batteries

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101823 - 101823

Published: Feb. 1, 2025

Language: Английский

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An Unexpected Low‐Temperature Battery Formation Technology Enabling Fast‐Charging Graphite Anodes

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

Published: Feb. 16, 2025

Abstract The battery formation process is pivotal for constructing a solid electrolyte interphase (SEI) on graphite anodes, generally conducted at high temperatures. However, the resulting excessive SEI film causes significant lithium loss and an inferior charging rate. Herein, unconventional low‐temperature technology based innovative temperature‐responsive with anion‐dominated solvation structure low temperature validated. During cycling 5 °C, enhanced anion–cation interaction, coupled suppressed solvent decomposition, facilitates generation of thin fluoride‐rich film. Consequently, anodes exhibit 5C fast‐charging performance (198.89 mAh g −1 , 53.39% theoretical capacity), successfully overcoming rate bottleneck 2C commonly encountered in commercial realize 95.88% capacity retention after 400 cycles 0.5C. Moreover, compared to traditional high‐temperature formation, saves 52.73% (from 22.02 10.42 h) time reduces from 16.76% 7.21%. This work highlights importance opportunities utilizing as “driving force” regulating interfacial chemistry.

Language: Английский

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Realizing Low‐Temperature Graphite‐based Rechargeable Potassium‐Ion Full Battery

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(7)

Published: Dec. 28, 2023

Graphite (Gr) has been considered as the most promising anode material for potassium-ion batteries (PIBs) commercialization due to its high theoretical specific capacity and low cost. However, Gr-based PIBs remain unfeasible at temperature (LT), suffering from either poor kinetics based on conventional carbonate electrolytes or K

Language: Английский

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Electrolyte Design Enables Rechargeable LiFePO4/Graphite Batteries from −80°C to 80°C

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 15, 2024

Abstract Lithium iron phosphate (LFP)/graphite batteries have long dominated the energy storage battery market and are anticipated to become dominant technology in global power market. However, poor fast‐charging capability low‐temperature performance of LFP/graphite seriously hinder their further spread. These limitations strongly associated with interfacial lithium (Li)‐ion transport. Here we report a wide‐temperature‐range ester‐based electrolyte that exhibits high ionic conductivity, fast kinetics excellent film‐forming ability by regulating anion chemistry Li salt. The barrier is quantitatively unraveled employing three‐electrode system distribution relaxation time technique. superior role proposed preventing 0 plating sustaining homogeneous stable interphases also systematically investigated. cells exhibit rechargeability an ultrawide temperature range −80 °C 80 outstanding without compromising lifespan. Specially, practical pouch achieve 80.2 % capacity retention after 1200 cycles (2 C) 10‐min charge 89 (5 at 25 provide reliable even °C.

Language: Английский

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Temperature-responsive solvation enabled by dipole-dipole interactions towards wide-temperature sodium-ion batteries

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 14, 2024

Rechargeable batteries with high durability over wide temperature is needed in aerospace and submarine fields. Unfortunately, Current battery technologies suffer from limited operating temperatures due to the rapid performance decay at extreme temperatures. A major challenge for wide-temperature electrolyte design lies restricting parasitic reactions elevated while improving reaction kinetics low Here, we demonstrate a temperature-adaptive by regulating dipole-dipole interactions various simultaneously address issues both subzero This approach prevents degradation endowing it ability undergo adaptive changes as varies. Such favors form solvation structure thermal stability rising transits one that salt precipitation lower ensures stably within range of ‒60 −55 °C. opens an avenue design, highlighting significance structures. High instability sluggishness electrolytes pose significant barriers towards sodium-ion batteries. authors report

Language: Английский

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Surface fluorinated graphite suppressing the lithium dendrite formation for fast chargeable lithium ion batteries

Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118808 - 118808

Published: Jan. 9, 2024

Language: Английский

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Cool batteries: What’s next?

Next Energy, Journal Year: 2024, Volume and Issue: 3, P. 100115 - 100115

Published: March 23, 2024

Lithium-ion batteries (LIBs) often encounter performance decline issues in cold conditions when temperature significantly drops, despite being widely regarded as a leading battery technology. Functioning typical rocking-chair battery, lithium ions shuttle through the "blood" (the electrolyte) of LIBs between graphite anode commonly-used negative electrode) and intercalation compound cathode (positive electrode), where ion movement tends to slow down with decreasing temperature. Considering relative maturity electrode materials, researchers generally pay attention electrolyte corresponding electrode/electrolyte interphase order accelerate transport. In light significant advancements, we herein try delineate categorize engineering depict what next can be done build better suitable for cooler temperatures near future. Specifically, advances are summarized goal improving ionic conductivity bulk electrolyte, facilitating desolvation dynamics at interface, accelerating across interfacial film. Furthermore, viable strategies outlined understand design principles low-temperature inspire more endeavors overcome critical challenges faced by extreme conditions.

Language: Английский

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Recent Progress on Multifunctional Electrolyte Additives for High‐Energy‐Density Li Batteries – A Review

ChemElectroChem, Journal Year: 2024, Volume and Issue: 11(14)

Published: April 15, 2024

Abstract The improvement of the safety, specific energy, cycle life and cost reduction Li‐ion batteries are hot research topics. Now, in pursuit high energy density, employed high‐energy‐density cathode/anode materials increased operation voltage challenge prevalent electrolyte formula, like existing ester ether electrolytes cannot withstand high‐voltage high‐capacity anode such as lithium (Li), silicon (Si) silicon‐graphite (Si−C) composite anode. It is recognized that stable electrolyte‐electrode interfaces can avoid side reactions protect electrode materials. Up to now, various additives have been developed modify electrode‐electrolyte interfaces, famous 4‐fluoroethylene carbonate, vinylene carbonate nitrate, LIBs metal (LMBs) performances improved greatly. However, lifespan higher‐energy‐density with Li/Si/Si−C high‐nickel layer oxides cathode meet request due lack ideal formula. In this review, we present a comprehensive in‐depth overview on additives, especially focused multifunctional reaction mechanisms fundamental design. Finally, novel insights, promising directions potential solutions for proposed motivate Li battery chemistries.

Language: Английский

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A Weakly Solvating Ether Electrolyte Enables Fast-Charging and Wide-Temperature Lithium-Ion Pouch Cells

ACS Nano, Journal Year: 2024, Volume and Issue: 18(31), P. 20762 - 20771

Published: July 27, 2024

Graphite-based lithium-ion batteries have succeeded greatly in the electric vehicle market. However, they suffer from performance deterioration, especially at fast charging and low temperatures. Traditional electrolytes based on carbonated esters sluggish desolvation kinetics, recognized as rate-determining step. Here, a weakly solvating ether electrolyte with tetrahydropyran (THP) solvent is designed to enable reversible (Li+) intercalation graphite anode. Unlike traditional ether-based which easily cointercalate into layers, THP-based shows ability can match well In addition, weak interconnection between Li+ THP allows more anions come shell of Li+, inducing an inorganic-rich interface thus suppressing side reactions. As result, lithium iron phosphate/graphite pouch cell (3 Ah) capacity retention 80.3% after 500 cycles 2 C charging, much higher than that ester system (7.6% 200 cycles). At 4 discharging increased 2.29 Ah 2.96 THP. Furthermore, work normally over wide working temperatures (-20 60 °C). Our design provides some understanding

Language: Английский

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