Weakly solvating electrolytes for next-generation lithium batteries: design principles and recent advances

Energy Materials and Devices, Journal Year: 2023, Volume and Issue: 1(1), P. 9370003 - 9370003

Published: Sept. 1, 2023

Lithium batteries play a dominant role in the power source market of electric vehicles and portable electronic devices. The electrolyte is critical to determining performance lithium batteries. Conventional electrolytes cannot meet ever-growing demands fast-charging, wide-temperature operation, safety properties Despite great success (localized) high-concentration electrolytes, they still suffer from disadvantages like low ionic conductivity high cost. emerging weakly solvating also known as low-solvating offer another solution these challenges have attracted intensive research interests recent years. This contribution reviews working mechanisms, design principles, advances developing electrolytes. A summary perspective about future directions this field provided. insights will benefit both academic industrial communities designing safe high-performance next-generation Li

Language: Английский

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Fundamentals of Electrolyte Design for Wide‐Temperature Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(37)

Published: Aug. 3, 2023

Abstract Lithium metal‐based batteries (LMBs) have garnered significant attention due to their exceptional energy density and lightweight characteristics. However, the electrochemical performance of LMBs often falls short, particularly in extreme temperature conditions. To address these challenges, development electrolytes capable withstanding wide ranges has emerged as a highly promising strategy for enhancing operational capabilities LMB across diverse weather This comprehensive review aims explore degradation mechanisms wide‐temperature electrolytes, establishing fundamental understanding failure that impede at harsh temperatures. Essential properties required are elucidated, latest advancements electrolyte technologies tailored specifically all‐climate operations comprehensively discussed. Particular emphasis is placed on unique role solvation structure interfacial offers valuable insights proposes directions practical implementation LMBs, contributing significantly existing knowledge base while concurrently paving way developing robust rigors environments.

Language: Английский

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Catalytic Chemistry Derived Artificial Solid Electrolyte Interphase for Stable Lithium Metal Anodes Working at 20 mA cm⁻² and 20 mAh cm⁻²

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(30)

Published: June 7, 2023

A stable solid electrolyte interphase (SEI) layer is crucial for lithium metal anode (LMA) to survive in long-term cycling. However, chaotic structures and chemical inhomogeneity of natural SEI make LMA suffering from exasperating dendrite growth severe electrode pulverization, which hinder the practical application LMAs. Here, we design a catalyst-derived artificial with an ordered polyamide-lithium hydroxide (PA-LiOH) bi-phase structure modulate ion transport enable dendrite-free Li deposition. The PA-LiOH can substantially suppress volume changes during plating/stripping cycles, as well alleviate parasitic reactions between electrolyte. optimized LMAs demonstrate excellent stability cycles over 1000 hours at ultra-high current density 20 mA cm-2 Li||Li symmetric cells. high coulombic efficiency up 99.2 % half cells additive-free electrolytes achieved even after 500 1 capacity mAh .

Language: Английский

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Non‐Fluorinated Ethers to Mitigate Electrode Surface Reactivity in High‐Voltage NCM811‐Li Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(25)

Published: April 16, 2024

Lithium (Li) metal batteries (LMBs) with nickel (Ni)-rich layered oxide cathodes exhibit twice the energy density of conventional Li-ion batteries. However, their lifespan is limited by severe side reactions caused high electrode reactivity. Fluorinated solvent-based electrolytes can address this challenge, but they pose environmental and biological hazards. This work reports on molecular engineering fluorine (F)-free ethers to mitigate surface reactivity in high-voltage Ni-rich LMBs. By merely extending alkyl chains traditional ethers, we effectively reduce catalytic cathode towards electrolyte at voltages, which suppresses oxidation decomposition electrolyte, microstructural defects rock-salt phase formation cathode, gas release issues. The NCM811-Li battery delivers capacity retention 80 % after 250 cycles a Coulombic efficiency 99.85 %, even superior that carbonate electrolytes. Additionally, strategy facilitates passivation Li anode forming robust solid-electrolyte interphase, boosting reversibility 99.11 cycling life 350 cycles, outperforms F-free ether Consequently, practical LMBs has been prolonged over 100 500 compared those carbonate- ether-based electrolytes, respectively.

Language: Английский

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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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Ether-Based High-Voltage Lithium Metal Batteries: The Road to Commercialization

ACS Nano, Journal Year: 2024, Volume and Issue: 18(16), P. 10726 - 10737

Published: April 11, 2024

Ether-based high-voltage lithium metal batteries (HV-LMBs) are drawing growing interest due to their high compatibility with the Li anode. However, commercialization of ether-based HV-LMBs still faces many challenges, including short cycle life, limited safety, and complex failure mechanisms. In this Review, we discuss recent progress achieved in electrolytes for propose a systematic design principle electrolyte based on three important parameters: electrochemical performance, industrial scalability. Finally, summarize challenges commercial application suggest roadmap future development.

Language: Английский

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Bilayer Artificial Solid Electrolyte Interphase with 75 GPa Young's Modulus Enable High Energy Density Lithium Metal Pouch Cells

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

Published: Jan. 10, 2025

Abstract The artificial solid electrolyte interphase (SEI) layer is capable of protecting lithium anodes and preventing side reactions with electrolytes. development inorganic/organic composite hybrid SEI can be considered as an efficient strategy to combine the merits high ion conductivity, mechanical modulus, flexibility. However, it still poses a great challenge solve agglomeration problem in these maintain strong interaction between metal. Herein, bilayer ultra‐thin (P‐FEM@Li) derivative from reactive fluorinated copolymer (P‐FEM) prepared shows ultra‐large Young's modulus (> 75 GPa). robust inorganic LiF‐rich provides superior ionic conductivity large while flexible organic polymer regulates ions transport compatibility. P‐FEM induced demonstrate stable cycles for more than 4400 h at 1 mA cm −2 average coulombic efficiency (CE) Li||P‐FEM@Cu 99.78% after 100 cycles. Moreover, P‐FEM@Li||NCM811 punch cell 428 Wh kg −1 exhibits high‐capacity retention 73% 175 This work new way prepare practical anodes.

Language: Английский

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Reticular Elastic Solid Electrolyte Interface Enabled by an Industrial Dye for Ultrastable Potassium‐Ion Batteries

Small Structures, Journal Year: 2023, Volume and Issue: 5(1)

Published: Oct. 10, 2023

The solid electrolyte interface (SEI) is vital to the stability of alkali metal‐ion battery anodes. However, conventional SEIs that lack elasticity will be damaged during anode's repeated volume expansion, such as in potassium‐ion anodes, ultimately resulting cell failure. Herein, a low‐content additive (pigment green 7, 0.07 wt%) carbonate create reticular elastic SEI with excellent uniformity and good chemical employed. As result, long‐lasting K||K symmetric (over 1400 h), enhanced graphite anode (500 cycles 97.9% capacity retention), stabilized perylene‐3,4:9,10‐tetracarboxydiimide cathode (1200 82.8% retention) are achieved. Furthermore, matched graphite||perylene‐3,4:9,10‐tetracarboxydiimide full operates stably for more than 200 cycles. This work provides novel avenue into rational design advanced

Language: Английский

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Developing artificial solid-state interphase for Li metal electrodes: recent advances and perspective

Energy Materials and Devices, Journal Year: 2023, Volume and Issue: 1(1), P. 9370005 - 9370005

Published: Sept. 1, 2023

The failure of Li metal anodes can be attributed to their unstable electrode/electrolyte interface, especially the continuous formation solid electrolyte interphase (SEI) and dendrite growth. To address this challenge, scholars proposed construction artificial SEI (ASEI) as a promising strategy. ASEI mainly homogenizes distribution Li⁺, mitigates growth, facilitates Li⁺ diffusion, protects anode from erosion. This review comprehensively summarizes recent progress in layers terms chemical composition. Fundamental understanding mechanisms, design principles, functions main components are analyzed. We also propose future research directions facilitate in-depth study its practical applications batteries. offers perspectives that will greatly contribute electrodes.

Language: Английский

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Interfacial Chemistry of Perfluorinated-Anion Additives Deciphering Ether-Based Electrolytes for Sodium-Ion Batteries

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(2), P. 461 - 467

Published: Jan. 12, 2024

Ether-based electrolytes with high reductive stability can be compatible multiple anodes. However, their low oxidative and flash point lead to restrictions for sodium-ion batteries. Here we report a rational coupling design between perfluorinated-anion additives cathode/solvent self-assemble protective cathode-electrolyte interphase (CEI) concurrently build −C–F···H–C– stable interaction network promote the of ethers. The preferential adsorption oxidization enable electrolyte restrain weak oxidation at voltage withstand up 4.5 V vs Na/Na+. Such also facilitate uniform Na deposition inhibit growth dendrites. pseudo hydrogen bond developed solvents contributes markedly elevated thermal 60 °C. These results highlight significance regulating interfacial environment solvation effect by sacrificial boosting electrochemical high-temperature performance.

Language: Английский

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