Reversible adsorption with oriented arrangement of a zwitterionic additive stabilizes electrodes for ultralong-life Zn-ion batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(6), С. 2684 - 2695

Опубликована: Янв. 1, 2023

A zwitterionic additive ( l -CN) with a positively charged quaternary ammonium site and multifunctional polar groups was employed to achieve ultralong-life Zn-ion batteries.

Язык: Английский

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Ligand-channel-enabled ultrafast Li-ion conduction

Nature, Год журнала: 2024, Номер 627(8002), С. 101 - 107

Опубликована: Фев. 28, 2024

Язык: Английский

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Emerging electrolytes with fluorinated solvents for rechargeable lithium-based batteries

Chemical Society Reviews, Год журнала: 2023, Номер 52(8), С. 2713 - 2763

Опубликована: Янв. 1, 2023

Electrolytes that can ensure the movement of ions and regulate interfacial chemistries for fast mass charge transfer are essential in many types electrochemical energy storage devices. However, emerging energy-dense lithium-based batteries, uncontrollable side-reactions consumption electrolyte result poor performances severe safety concerns. In this case, fluorination has been demonstrated to be one most effective strategies overcome above-mentioned issues without significantly contributing engineering technical difficulties. Herein, we present a comprehensive overview fluorinated solvents employed batteries. Firstly, basic parameters dictate properties solvents/electrolytes elaborated, including physical properties, solvation structure, interface chemistry, safety. Specifically, focus on advances scientific challenges associated with different enhancement their performance after fluorination. Secondly, discuss synthetic methods new reaction mechanisms depth. Thirdly, progress, structure-performance relationship, applications reviewed. Subsequently, provide suggestions solvent selection battery chemistries. Finally, existing further efforts summarized. The combination advanced synthesis characterization approaches assistance machine learning will enable design

Язык: Английский

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Research Progresses of Liquid Electrolytes in Lithium‐Ion Batteries

Small, Год журнала: 2022, Номер 19(8)

Опубликована: Дек. 5, 2022

Abstract In recent years, the rapid development of modern society is calling for advanced energy storage to meet growing demands supply and generation. As one most promising systems, secondary batteries are attracting much attention. The electrolyte an important part battery, its composition closely related electrochemical performance batteries. Lithium‐ion battery mainly composed solvents, additives, lithium salts, which prepared according specific proportions under certain conditions needs characteristics. This review analyzes advantages current problems liquid electrolytes in lithium‐ion (LIBs) from mechanism action failure mechanism, summarizes research progress future trends requirements electrolytes, points out emerging opportunities development.

Язык: Английский

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Health prognostics for lithium-ion batteries: mechanisms, methods, and prospects

Energy & Environmental Science, Год журнала: 2023, Номер 16(2), С. 338 - 371

Опубликована: Янв. 1, 2023

Critical review of main aging mechanisms and health prognostic methods for lithium-ion batteries. Comprehensive summary challenges prospects future trends with potential solutions.

Язык: Английский

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In Situ Construction of Anode–Molecule Interface via Lone‐Pair Electrons in Trace Organic Molecules Additives to Achieve Stable Zinc Metal Anodes

Advanced Energy Materials, Год журнала: 2023, Номер 13(22)

Опубликована: Апрель 25, 2023

Abstract The practical application of aqueous zinc batteries (AZBs) is significantly limited by the poor reversibility anodes, including rampant dendrite growth and severe interfacial side‐reactions. Herein, trace hexamethylenetetramine (HMTA) additive with a lone‐pair‐electron containing heterocycle introduced for Zn metal anode protection. Specifically, added HMTA can change solvated structure strong interaction ions, preferentially absorb on surface to in situ establish an unique anode–molecule interface. Such interface not only shows affinity promote dynamic transmission deposition 2+ ions but also displays role suppressing parasitic reactions. Consequently, electrolyte achieves high Coulombic efficiency 99.75%, delivers remarkable lifespan over 4000 h at 5 mA cm −2 1 mAh Zn//Zn symmetric cell. Even under deep plating/stripping condition (5 ), it still run almost 600 h. Additionally, Zn//V 2 O full cell retains capacity retention 61.7% after cycles A g −1 . innovative strategy expected be immediate benefit design low‐cost AZBs ultra‐long lifespan.

Язык: Английский

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Taming Solvent–Solute Interaction Accelerates Interfacial Kinetics in Low‐Temperature Lithium‐Metal Batteries

Advanced Materials, Год журнала: 2022, Номер 35(3)

Опубликована: Окт. 28, 2022

Abstract Lithium (Li)‐metal batteries promise energy density beyond 400 Wh kg −1 , while their practical operation at an extreme temperature below −30 °C suffers severe capacity deterioration. Such battery failure highly relates to the remarkably increased kinetic barrier of interfacial processes, including desolvation, ion transportation, and charge transfer. In this work, kinetics in three prototypical electrolytes are quantitatively probed by three‐electrode electrochemical techniques molecular dynamics simulations. Desolvation as limiting step processes is validated dominate cell impedance low temperature. 1,3‐Dioxolane‐based electrolyte with tamed solvent–solute interaction facilitates fast enabling Li|LiNi 0.5 Co 0.2 Mn 0.3 O 2 cells −40 retain 66% room‐temperature withstand charging rate (0.3 C). The desolvation dictated environments uncovered. Regulating low‐affinity solvents emerges a promising solution low‐temperature batteries.

Язык: Английский

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Electrostatic Potential as Solvent Descriptor to Enable Rational Electrolyte Design for Lithium Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(22)

Опубликована: Апрель 14, 2023

Abstract Artificial intelligence/machine learning (AI/ML) applied to battery research is considered be a powerful tool for accelerating the cycle. However, development of appropriate materials descriptors often first hurdle toward implementing meaningful and accurate AI/ML. Currently, rational solvent selection remains significant challenge in electrolyte still based on experiments. The dielectric constant (ε) donor number (DN) design are insufficient. Finding theoretically computable evaluating Li + solvation step development. Here, electrostatic interaction between solvent, potential (ESP) calculated by density functional theory calculations reveals regularity. ESP as direct simple descriptor conveniently designing electrolytes proposed. lowest negative (ESP min ) ensures nucleophilic capacity solvating weak means decreased energy. Weak strong highest positive max main characteristics non‐solvating antisolvents. Using plot – weakly or antisolvent identified that have been used engineering. This can boost AI/ML develop high performance electrolytes.

Язык: Английский

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Unity of Opposites between Soluble and Insoluble Lithium Polysulfides in Lithium–Sulfur Batteries

Advanced Materials, Год журнала: 2022, Номер 34(47)

Опубликована: Июль 11, 2022

Rechargeable batteries based on Li-S chemistry show promise as being possible for next-generation energy storage devices because of their ultrahigh capacities and densities. Research over the past decade has demonstrated that morphology lithium polysulfides (LPSs) in electrolytes (soluble or insoluble) plays a decisive role battery performance. Early studies have focused mainly inhibiting dissolution LPSs invested considerable effort to realize this objective. However, recent years, completely different view during discharge/charge should be promoted emerged. At critical juncture large-scale application batteries, it is time summarize discuss both sides contradiction. Herein, an overview these two opposite views pertaining soluble insoluble LPSs, including historical environment, classical strategies, advantages, disadvantages. Finally, future predicted multiangle review research conducted thus far, reasoning behind conjecture thoroughly discussed.

Язык: Английский

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Effect of the Electric Double Layer (EDL) in Multicomponent Electrolyte Reduction and Solid Electrolyte Interphase (SEI) Formation in Lithium Batteries

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(4), С. 2473 - 2484

Опубликована: Янв. 23, 2023

Electrolytes, consisting of salts, solvents, and additives, must form a stable solid electrolyte interphase (SEI) to ensure the performance durability lithium(Li)-ion batteries. However, electric double layer (EDL) structure near charged surfaces is still unsolved, despite its importance in dictating species being reduced for SEI formation negative electrode. In this work, newly developed model was used illustrate effect EDL on two essential electrolytes, carbonate-based Li-ion batteries ether-based with Li-metal anodes. Both electrolytes have fluoroethylene carbonate (FEC) as common additive beneficial F-containing component (e.g., LiF). role FEC drastically differs these electrolytes. an effective modifier by only entering reduced, anion (PF6-) will not enter EDL. For electrolyte, both (TFSI-) can be reduced. The competition within due surface charge temperature leads unique observed prior experiments: more modulating components at low (-40 °C) than room (20 electrolyte. These collective quantitative agreements experiments emphasize incorporating multicomponent reduction reactions simulations/experiments predict/control layer.

Язык: Английский

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