In situ Polymerized Solid‐State Electrolyte Enabling Inorganic‐Organic Dual‐Layered SEI Film for Stable Lithium Metal Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract In situ polymerization of cyclic ethers is a promising strategy to construct solid‐state lithium (Li) metal batteries with high energy density and safety. However, their practical applications are plagued by the unsatisfactory electrochemical properties polymer electrolytes unstable solid electrolyte interphase (SEI). Herein, organic perfluorodecanoic acid (PFDA) proposed as new initiator polymerize 1,3‐dioxolane (PDOL), which enables as‐obtained PDOL deliver greatly enhanced ionic conductivity broadened window. Besides, experimental data theoretical calculations demonstrate dual‐layered SEI PFDA‐derived component on top LiF at bottom constructed surface Li metal, can provide enough mechanical strength suppress dendrite growth flexibility accommodate volume fluctuations during repeated cycling. As result, symmetric cells PFDA‐induced (P‐PDOL) achieve superior plating/stripping cycle for 1400 h 0.3 mA cm −2 . Additionally, Li||P‐PDOL||LiFePO 4 (LFP) full maintain stable cycling over 300 times 0.5 C. This work offers potential simultaneously prepare high‐performance stabilize metal/PDOL interface, providing research insights advance toward applications.

Language: Английский

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In situ preparation of nonflammable phosphorus-containing gel polymer electrolyte for lithium metal battery with enhanced interfacial stability and safety

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160011 - 160011

Published: Jan. 1, 2025

Language: Английский

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In‐situ polymerized solid/quasi‐solid polymer electrolyte for lithium‐metal batteries: recent progress and perspectives

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 11, 2024

Abstract In pursuit of high energy density, lithium metal batteries (LMBs) are undoubtedly the best choice. However, leakage and inevitable dendrite growth in liquid electrolytes seriously hinder its practical application. Solid/quasi‐solid state have emerged as an answer to solve above issues. Especially, polymer with excellent interface compatibility, flexibility, ease machining become a research hotspot for LMBs. Nevertheless, contact between electrolyte inorganic electrode materials low ionic conductivity restrict development. On account these, situ polymerized is proposed. Polymer solid produced through polymerization promote robust while simplifying preparation steps. This review summarized latest progress These were divided into three parts according their methods: thermally induced polymerization, chemical initiator ionizing radiation so on. Furthermore, we concluded major challenges future trends It's hoped that this will provide meaningful guidance on designing high‐performance

Language: Английский

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3D printing zwitter Molecule‐Enhanced Solid Polymer Electrolytes for High‐Energy Lithium Metal Batteries

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

Published: Jan. 19, 2025

Abstract Unsatisfying preparation controllability, mechanical properties, ionic conductivities, and working voltage windows limit the practical applications of solid polymer electrolytes (SPEs) in lithium‐metal batteries. Herein, a 3D printing strategy combined with zwitter molecule modification is proposed to efficiently solve problems SPEs polyvinylidene fluoride‐hexafluoropropylene (PH) matrix. The electron‐donating property resulting from carboxyl groups aspartate acid (Asp) induces cis‐conformation change fluoride, which enhances Li + transport anion immobilization on chains. In addition, amphoteric functional Asp simultaneously promote lithium salt dissociation desolvation N,N‐dimethylformamide, thus leading formation stable 3 N/LiF‐enriched interphases between electrodes electrolyte. Moreover, technology increases continuity uniformity SPE membrane, further increasing conductivity properties. As result, exhibits high (1.20 × 10 −4 S cm −1 ), large transfer number (0.68), wide electrochemical window (4.6 V), good tensile strength (≈110 MPa), endowing half cells cycling performance over 2000 h low overpotential 40 mV. Furthermore, high‐energy densities (492 Wh kg 1303 L ) are delivered by pouch cell SPE, indicating application prospects.

Language: Английский

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Heterogeneous Engineered Solid Electrolyte for Seamless and Stable Integration of Anode and Cathode

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

Published: Feb. 16, 2025

Abstract Solid‐state lithium metal batteries (LMBs) with high safety and energy density are the ultimate goal for storage systems. The bottleneck lies in solid electrolytes, which must maintain perfect solid–solid contact be electrochemically stable both Li anode high‐voltage cathode. Here, we develop an situ polymerized hetero‐layered electrolyte that simultaneously broadens electrochemical window addresses interfacial issues between multiple components. polyvinylidene fluoride (PVDF) layer toward cathode improves voltage compatibility to 4.8 V, while boron nitride (BN) provides sufficient mechanical strength, regulates Li‐ions transport promotes formation of inorganic‐rich interphase (SEI). effect structure is then verified easy‐to‐process poly(1,3‐dioxane) (PDOL) electrolyte, seamlessly integrates interfaces, bridging cathode, PVDF, BN, metal. This characterized by room temperature (RT) ionic conductivity (2.1 × 10 −3 S cm −1 ), transference number (0.801). Most importantly, Li|LiNi 0.6 Co 0.2 Mn O 2 (NCM622) full show remarkable cycling performance capacity retention 90.3% over 200 cycles at 0.5 C. a seamless interface new avenue high‐energy, solid‐state LMBs.

Language: Английский

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Development of Stable Electrode-Electrolyte Interfaces with Phosphorus-Containing Flame-Retardant Microspheres for Safe, High-Voltage, and High-Energy-Density Lithium Batteries

Published: Jan. 1, 2025

Language: Английский

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Organic-inorganic composite electrolyte with in-situ polymerization poly(1,3-dioxolane) toward high-performance quasi-solid-state lithium metal batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 120, P. 116459 - 116459

Published: April 3, 2025

Language: Английский

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Establishing ion transport channels in plastic crystal electrolytes via multifunctional cross-linked polymer matrices for stable and safe lithium metal batteries

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110959 - 110959

Published: April 1, 2025

Language: Английский

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Alpha-cyclodextrin-based polyrotaxane combining phytate lithium salt as a novel bio-based flame-retardant solid polymer electrolyte for all-solid-state lithium metal batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162376 - 162376

Published: April 1, 2025

Language: Английский

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In Situ Polymerized Polyfluorinated Crosslinked Polyether Electrolytes for High‐Voltage Lithium Metal Batteries

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

Published: May 2, 2025

Abstract In situ polymerized polyether electrolytes are promising for solid‐state Li metal batteries due to their high ionic conductivity and excellent interfacial contact. However, practical application is hindered by dendrite formation, degradation, limited oxidative stability. Herein, we propose an in polyfluorinated crosslinked electrolyte (PDOL‐OFHDBO), synthesized copolymerizing 1,3‐dioxolane (DOL) with 2,2′‐(2,2,3,3,4,4,5,5‐octafluorohexane‐1,6‐diyl)bis(oxirane) (OFHDBO) as a crosslinker. The electron‐withdrawing groups endow PDOL‐OFHDBO enhanced stability compatibility, while reducing the solvation power of polymer matrix promote anion‐derived inorganic‐rich solid interphase uniform deposition. Consequently, exhibits wide electrochemical window (>5.6 V) enables long‐term stable plating/stripping over 1100 h. Furthermore, Li||LiNi 0.8 Co 0.1 Mn O 2 (NCM811) full cells utilizing demonstrate outstanding cycling high‐loading cathodes (≈3.8 mAh cm −2 ) thin anodes (50 µm), achieving capacity retention 95.5% 89.1% 100 cycles at cut‐off voltages 4.3 4.5 V, respectively. Remarkably, Ah‐level Li||NCM811 pouch deliver impressive specific energy 401.8 Wh kg −1 , highlighting potential batteries.

Language: Английский

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