Design of functional binders for high-specific-energy lithium-ion batteries: from molecular structure to electrode properties

Industrial Chemistry and Materials, Journal Year: 2023, Volume and Issue: 2(2), P. 191 - 225

Published: Sept. 29, 2023

This review systematically summarizes the research progress of functional binders in lithium-ion batteries and elucidates main functions advanced to deal with challenges high-specific-energy electrodes.

Language: Английский

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Advances in Carbon Nanotubes and Carbon Coatings as Conductive Networks in Silicon‐based Anodes

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)

Published: July 25, 2024

Abstract Silicon‐based anode has high theoretical capacity but suffers from poor electrical conductivity, large volume expansion, and unstable solid electrolyte interphase (SEI). Adding carbon nanotubes (CNTs) coatings are both very effective methods for addressing the above issues. The intrinsic sp 2 covalent structure endows CNTs with excellent mechanical strength, chemical stability, which makes them suitable various energy storage applications, such as in lithium‐ion batteries (LIBs). Apart conductive network, can serve current collectors, probes, frameworks, they have potential construction of next‐generation battery architectures. Carbon mixed ionic‐electronic conductors good stability that provide support mitigate expansion Si‐based materials. This review outlines advances networks anodes, well insights into their future development. It provides an in‐depth analysis percolation mechanism networks, highlights importance flexible long‐range decouples relationships between stress, interface electron/ion transfer.

Language: Английский

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Facilitating prelithiation of silicon carbon anode by localized high‐concentration electrolyte for high‐rate and long‐cycle lithium storage

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(6)

Published: Feb. 1, 2024

Abstract The commercialization of silicon‐based anodes is affected by their low initial Coulombic efficiency (ICE) and capacity decay, which are attributed to the formation an unstable solid electrolyte interface (SEI) layer. Herein, a feasible cost‐effective prelithiation method under localized high‐concentration system (LHCE) for silicon–silica/graphite (Si–SiO 2 /C@G) anode designed stabilizing SEI layer enhancing ICE. thin SiO /C layers with –NH groups covered on nano‐Si surfaces demonstrated be beneficial process density functional theory calculations electrochemical performance. formed LHCE proven rich in ionic conductivity, inorganic substances, flexible organic products. Thus, faster Li + transportation across further enhances effect rate performance Si–SiO /C@G anodes. also leads uniform decomposition high stability abundant components. As result, prepared shows reversible specific 937.5 mAh g −1 after 400 cycles at current 1 C. NCM 811‖Li‐SSG‐LHCE full cell achieves high‐capacity retention 126.15 C over 750 84.82% ICE, indicating great value this strategy Si‐based large‐scale applications.

Language: Английский

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Efficient Lithium Transport and Reversible Lithium Plating in Silicon Anodes: Synergistic Design of Porous Structure and LiF‐Rich SEI for Fast Charging

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: March 5, 2024

Abstract Silicon (Si) anodes hold great promise for enhancing the energy density of lithium‐ion batteries (LIBs). However, issues such as slow intrinsic kinetics and unstable interfaces caused by significant volume changes hinder practical deployment Si anodes. Fast charging is desired Si‐related that worsen Li plating dead Li, making it essential to overcome these safe, reversible charging. Herein, a novel approach proposed combining structural design solid electrolyte interface (SEI) modulation enable efficient safe fast LIBs. 3D porous micro‐particles consisting nanosheets coated with pitch‐based carbon layer are successfully prepared. This provides enhanced ion transport pathways while maintaining material's rate performance tap density. Furthermore, designed localized high‐concentration (LHCE) exhibits lower + desolvation barrier leads formation LiF‐rich SEI, mitigating “tip effect” during charging, stability, demonstrating high Coulombic efficiency. Overall, this study highlights synergistic importance structure SEI regulation in LIB aiding developing superior, storage.

Language: Английский

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Multifunctional electronic skins for ultra-sensitive strain, temperature, humidity sensing, and energy harvesting

Nano Energy, Journal Year: 2024, Volume and Issue: 127, P. 109752 - 109752

Published: May 19, 2024

Language: Английский

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Polymer gels for aqueous metal batteries

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101426 - 101426

Published: Jan. 1, 2025

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Dynamic hydrogen bond cross-linking binder with self-healing chemistry enables high-performance silicon anode in lithium-ion batteries

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 657, P. 893 - 902

Published: Dec. 10, 2023

Language: Английский

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Thermal polymerization of ion-modified carbon dots into multi-functional LiF-carbon interface for stabilizing SiO anode

Energy storage materials, Journal Year: 2023, Volume and Issue: 63, P. 102996 - 102996

Published: Sept. 28, 2023

Language: Английский

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Building Interconnected Architectures with Silicon‐Based Nanospheres and TiN Ionic Fence Enables Ultrahigh Electrochemical Stability

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(27)

Published: Feb. 21, 2024

Abstract Silicon oxide (SiO x ) material is gradually developing as a promising alternative to silicon due better trade‐off in terms of volume expansion and theoretical capacity. However, the low conductivity instability electrode–electrolyte interface caused by penetration fluorine anion (F − severely affect stability solid electrolyte interphase (SEI), ultimately leading capacity loss cycling instability. In this work, an “ionic fence” idea proposed, which effectively inhibits shuttle F promotes SEI. Based on this, dense orderly silicon‐based interconnected assembly covered TiN protective ionic fence designed using melt‐assembly technique nitridation strategy. After 1000 deep cycles, can be maintained at 431.7 mA h g −1 , average Coulombic efficiency reach 99.69% throughout process, even steady state after 2000 showing excellent electrochemical stability. Finite element analysis reveals that fence, stress management layer, constrains materials improves mechanical structural particles fully lithiated state, thus ensuring long‐term Selective design for has great universality development potential building stable electrode materials.

Language: Английский

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Unveiling the Role of Cationic Pyridine Sites in Covalent Triazine Framework for Boosting Zinc–Iodine Batteries Performance

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 16, 2024

Rechargeable Zinc-iodine batteries (ZIBs) are gaining attention as energy storage devices due to their high density, low-cost, and inherent safety. However, the poor cycling performance of these always arises from severe leakage shuttle effect polyiodides (I

Language: Английский

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