Liberating Lithium Ions from Polymer Matrix via Harnessing Ion‐Dipole Interaction Toward Stable Solid‐State Lithium Metal Batteries

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

Published: July 19, 2024

Abstract Although polymer electrolytes have shown great potential in solid‐state lithium metal batteries (LMBs), the chain segments anchor movement of ions (Li + ), which induces low ionic conductivity and limits their application. Herein, a strategy harnessing ion‐dipole interactions is proposed to liberate from chains. The adiponitrile (ADN) molecular dipole with strong bond moment (C≡N, 11.8 × 10 −30 C m) introduced into polyvinylidene fluoride‐co‐hexafluoropropylene (PVDF‐HFP) matrix, achieving an electrolyte high 5.1 −4 S cm −1 at 30 °C. It demonstrated that interaction between C≡N Li weakens F···…Li , facilitating dissociation liberating Moreover, hybrid unsaturated solvation structure formed ADN dipole, PVDF‐HFP chain, TFSI − anion, corresponding solvent‐separated ion pair (SSIP) structure. Thus, obtained realizes lithium‐ion transference number (0.74). Consequently, assembled symmetric cell delivers stable stripping/plating reversibility over 900 h. Additionally, Li|LiFePO 4 full cells exhibit long‐term cycling stability 0.5 300 cycles capacity retention 96.4% ultralong 1000 rate (5 C).

Language: Английский

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Induced Orbital Asymmetry of Nonpolar Molecular Additives for Boosted Rapid Operating Performance in Lithium Metal Batteries

EES batteries., Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Highly polarizable and non-polar anthracene electrolyte additives stabilize Li metal anodes by inducing dipole effects, controlling crystalline orientation, enhancing cycling stability.

Language: Английский

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Anode interface-stabilizing dry process employing a binary binder system for ultra-thick and durable battery electrode fabrication

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158271 - 158271

Published: Dec. 3, 2024

Language: Английский

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Additives Capable of Stably Supplying Anions/Cations for Homogeneous Lithium Deposition/Stripping

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

One of the important factors leading to lithium dendrites is a slow lithium-ion mass transport and imbalanced distribution Li

Language: Английский

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Asymmetrical Functionalization of Polarizable Interface Restructuring Molecules for Rapid and Longer Operative Lithium Metal Batteries

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 13, 2024

Lithium metal batteries (LMBs) have been recognized as high-energy storage alternatives; however, problematic surface reactions due to dendritic Li growth are major obstacles their widespread utilization. Herein, a 3-mercapto-1-propanesulfonic acid sodium salt (MPS) with asymmetrically functionalized thiol and sulfonate groups polarizable interface-restructuring molecules is proposed achieve rapid longer-operating LMBs. Under harsh condition of 5 mA cm

Language: Английский

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Polar Covalent Triazine Frameworks as High‐Performance Potassium Metal Battery Cathodes

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

The exploration of potassium metal batteries (PMBs) has been intensified, leveraging potassium's abundant availability, low redox potential, and small Stokes radius. Covalent triazine frameworks (CTFs) stand out for their accessible nitrogen sites customizable structures, making them attractive electrode materials. Nonetheless, there is a lack established design principles to guide the development high-performance PMBs using CTFs. In this work, CTFs consisting different monomers are used as PMB cathodes investigate structure-performance correlation. electronic structure analysis reveals polar characteristic CTF derived from tetracyanoquinodimethane monomer, setting it apart with superior capacity (161 mAh g

Language: Английский

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Sulfur Vacancy‐Rich MoS₂ Flower‐Like Microsphere with Synchronously Tunable Electromagnetic and Chemical Effects for Boosting Semiconductor SERS

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

Published: Dec. 4, 2024

Abstract Combined contribution of electromagnetic and chemical effects their synchronous tuning are an effective strategy for constructing semiconductor surface‐enhanced Raman scattering (SERS) substrates with ultra‐high sensitivity. In this work, a sulfur vacancy‐rich MoS 2 flower‐like microsphere is successfully prepared the first time through combination morphology regulation defect engineering strategies, achieving to SERS enhancement. enhancement factor as high 2.54 × 10 8 , which represents highest sensitivity among currently reported SERS‐active substrates. The theoretical calculations experiments elucidate observed activity mechanism effects. unique structures can induce Mie resonance by multiple reflection incident light in cavity structure, realizes strong effect. Meanwhile, high‐efficient carrier separation substrate multiple‐channel charge transfer mode between analyte be achieved means abundant surface sulfur‐vacancy defects, provide effect target analyte. This work opens up new idea perspective supersensitive sensors, ultimately advancing practical application technology.

Language: Английский

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Enhancing performance of lithium metal batteries through acoustic field application

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

The graphic illustrates how an external acoustic field stabilizes the SEI layer by enhancing lithium-ion mass transfer at slip lines and kinks, reducing pit formation promoting a more uniform SEI, ultimately improving battery performance.

Language: Английский

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