Advances in Anion Chemistry in the Electrolyte Design for Better Lithium Batteries

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 17, 2025

Abstract Electrolytes are crucial components in electrochemical energy storage devices, sparking considerable research interest. However, the significance of anions electrolytes is often underestimated. In fact, have significant impacts on performance and stability lithium batteries. Therefore, comprehensively understanding anion chemistry importance. Herein, in-depth comprehension its positive effects interface, solvation structure Li-ions, as well batteries been emphasized summarized. This review aims to present a full scope furnish systematic cognition for rational design advanced better with high density, lifespan, safety. Furthermore, insightful analysis perspectives based current proposed. We hope that this sheds light new electrolytes.

Language: Английский

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Tailoring Multiple Interactions in Poly (Urethane‐Urea)‐Based Solid‐State Polymer Electrolytes for Long‐Term Cycling Lithium Metal Batteries

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

Published: March 10, 2025

Abstract Polyethylene oxide (PEO)‐based solid polymer electrolytes (SPEs) are considered as one of the most promising candidates for next‐generation lithium metal batteries. However, their application is limited by poor electrode/electrolyte interfacial stability, low Li‐ions transference number, and weak mechanical strength. Herein, poly (urethane‐urea)‐based SPEs developed to enhance improve transport kinetics, provide superior properties. The (urethane‐urea) structure integrates abundant polar groups rigid conjugated moieties, which facilitate interactions with anions salt in SPEs, promoting number supporting formation a LiF‐rich electrolyte interphase (SEI) guide uniform deposition suppress dendrite growth. Furthermore, supramolecular crosslinked network formed through multiple hydrogen bonds π‐π stacking interactions, enhancing strength toughness SPEs. As result, Li//Li solid‐state symmetric cells assembled this SPE demonstrate stable cycling over 3000 h, while LiFePO 4 retain 93.6% initial capacity after 500 cycles at rate 1C. This work presents feasible design strategy developing highly functional materials.

Language: Английский

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Constructing flame retardant microspheres for safe and stable poly (ethylene oxide) based All-Solid-State batteries at high voltage

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149756 - 149756

Published: Feb. 18, 2024

Language: Английский

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In Situ Polymerized Flame‐Retardant Crosslinked Quasi Solid‐State Electrolytes for High‐Voltage Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(42)

Published: Aug. 12, 2024

Abstract The construction of poly‐dioxolane (PDOL) solid‐state electrolytes by in situ polymerization is an effective way to achieve high performance lithium‐metal batteries. However, the poor electrochemical stability and safety issues linear PDOL limit their further application. In this work, a multifunctional crosslinker has been introduced construct flame retardant crosslinked quasi electrolyte (FCDOL). Due synergistic effect network, prepared FCDOL achieves excellent room temperature ionic conductivity (0.72 mS cm −1 ), Li + transference number (0.655), wide stabilization window (4.8 V vs Li/Li impressive when matched with lithium metal anodes (>4000 h plating/stripping) high‐voltage cathodes, corresponding pouch cells can withstand abusive tests such as bending cutting, encouraging that SPEs provides new insights into high‐energy density high‐safety

Language: Английский

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Advanced Crosslinked Solid Polymer Electrolytes: Molecular Architecture, Strategies, and Future Perspectives

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

Published: Sept. 17, 2024

Abstract Solid‐state batteries (SSBs) have attracted much attention for high‐energy‐density and high‐safety energy storage devices. Solid polymer electrolytes (SPEs) emerged as a critical component in the advancement of SSBs, owing to compelling advantages strong molecular structure‐designability, low cost, easy manufacturing, no liquid leakage. However, linear SPEs usually room‐temperature ionic conductivity due crystallization, melting at high temperature. Thus, crosslinked been proposed that chemical bonding between internal molecule chains can maintain solid state expand operational temperature, disrupt regularity segment, diminish crystalline degree, leading an enhancement conductivity. Furthermore, integration functional groups within SPE network significantly augment electrochemical performance SPEs. Herein, according structure, are categorized into four types: simple network, AB polymers (ABCP), semi‐interpenetrating (semi‐IPN), interpenetrating (IPN), then structure features disadvantages commonly used these types reviewed. In addition, with self‐healing, flame‐retardant, degradable, recyclability introduced. Finally, challenges prospects summarized, hoping provide guidance design future.

Language: Английский

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Multisite Crosslinked Poly(ether‐urethane)‐Based Polymer Electrolytes for High‐Voltage Solid‐State Lithium Metal Batteries

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

Published: Oct. 24, 2024

Abstract Utilizing solid‐state polymer electrolytes (SPEs) in high‐voltage Li‐metal batteries is a promising strategy for achieving high energy density and safety. However, the SPEs face challenges such as undesirable mechanical strength, low ionic conductivity incompatible interface. Here, novel crosslinked poly(ether‐urethane)‐based SPE with molecular cross‐linked structure fabricated to create high‐throughput Li + transport pathway. The amino‐modified Zr‐porphyrin‐based metal‐organic frameworks (ZrMOF) are introduced multisite cross‐linking nodes chain extenders. abundant ether/ketonic‐oxygen Lewis acid sites achieve (5.7 × 10 −4 S cm −1 at 30 °C) transference number (0.84). interpenetrating of robust strength results record cycle life 8000 h Li||Li symmetric cell. structural stability ZrMOF electron‐withdrawing urethane/ureido groups oxidation potential (5.1 V) enables discharge capacity 182 mAh g 0.3 C over 500 cycles LiNi 0.8 Co 0.1 Mn O 2 ||Li Remarkably, 446 Wh kg 1.5‐Ah pouch cell obtained loading cathode (≈4 −2 ), demonstrating great prospect current practical application solid‐state, batteries.

Language: Английский

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Fluorine and carbonate regulated nonflammable polymer electrolyte for ultrastable high-voltage Li metal batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104129 - 104129

Published: Feb. 1, 2025

Language: Английский

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Amino-modified UiO-66-NH2 reinforced polyurethane based polymer electrolytes for high-voltage solid-state lithium metal batteries

Nano Research, Journal Year: 2024, Volume and Issue: 17(11), P. 9662 - 9670

Published: July 31, 2024

Language: Английский

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Selective Adsorption of Electrolyte Anions with Chitosan Skin Producing LiF‐Enriched Solid Electrolyte Interphase for Si‐Based Lithium‐Ion Batteries

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

Published: Sept. 5, 2024

Abstract Silicon (Si) is a promising anode material for high‐energy‐density lithium‐ion batteries. To achieve wide practical applications, it highly desirable to build effective solidelectrolyte interphase (SEI) with high stability and Li + conductivity. Herein, novel interface engineering strategy demonstrated the assistance of surfactant self‐assembly chitosan (CS) skin on Si surface. A coating integrity particle obtained compared that without surfactants. Unlike traditional surface coatings, positive charge applied CS layer enables selectively absorb PF 6 − anions in electrolyte. The aggregates Helmholtz lead formation anion‐derived SEI enriched LiF species. As result, prepared CS‐decorated exhibits initial coulombic efficiency 92.2% rate capability 2200 mAh g −1 capacity at 10 C rate. After 500 charge–discharge cycles, still able retain reversible 1621.3 . Furthermore, excellent electrochemical property full cells against NCM811 cathode. provides new mechanism demonstrates feasible way develop high‐performance Si‐based

Language: Английский

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Solid-state rigid polymer composite electrolytes with in-situ formed nano-crystalline lithium ion pathways for lithium-metal batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 72, P. 103714 - 103714

Published: Aug. 14, 2024

Language: Английский

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