Metal‐Free Eutectic Electrolyte with Weak Hydrogen Bonds for High‐Rate and Ultra‐Stable Ammonium‐Ion Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 2, 2023

Abstract As the need for sustainable battery chemistry grows, non‐metallic ammonium ion (NH 4 + ) batteries are receiving considerable attention because of their unique properties, such as low cost, nontoxicity, and environmental sustainability. In this study, solvation interactions between NH solvents elucidated design principles weakly solvated electrolytes proposed. Given that hydrogen bond dominate solvents, strength solvent's electrostatic potential directly determines its solvating power. a proof concept, succinonitrile with relatively weak electronegativity is selected to construct metal‐free eutectic electrolyte (MEE). expected, MEE able significantly broaden electrochemical stability window reduce solvent binding energy in shell, which leads lower desolvation barrier fast charge transfer process. result, as‐constructed ‐ion exhibit superior reversible rate capability (energy density 65 Wh kg –1 total active mass at 600 W unprecedent long‐term cycling performance (retention 90.2% after 1000 cycles 1.0 A g ). The proposed methodology constructing bonded will provide guidelines implementing high‐rate ultra‐stable ‐based storage systems.

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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Rate-limiting mechanism of all-solid-state battery unravelled by low-temperature test-analysis flow

Energy storage materials, Journal Year: 2024, Volume and Issue: 67, P. 103316 - 103316

Published: March 1, 2024

Language: Английский

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Breaking the molecular symmetricity of sulfonimide anions for high-performance lithium metal batteries under extreme cycling conditions

Nature Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Language: Английский

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Li₃PO₄‐Enriched SEI on Graphite Anode Boosts Li⁺ De‐Solvation Enabling Fast‐Charging and Low‐Temperature Lithium‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(21)

Published: March 14, 2024

Li

Language: Английский

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