Pseudosolvent Guiding Ultralight V₂CT_x/Bacterial Cellulose with Fast Ion Diffusion Paths for High‐Rate and High‐Capacity Lithium Metal Anodes

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

Published: March 10, 2025

Abstract Practical application of Li metal anodes (LMAs) is restricted by growth dendrites. Achieving uniform deposition with high practically available specific capacity vital to obtain advanced LMAs. Herein, an ultralight V 2 CT x /bacterial cellulose (U‐V /BC) foam a volume density 0.039 g cm −3 guided tertiary butanol avoid restacking both and BC. The lithiophilic functional groups BC synergistically induce the nucleation. loose stacking structure U‐V /BC provides 3D ion channels for accelerating + diffusion, homogeneous flux, as well enough sites interspace deposition. As result, /BC@Li exhibits superior stability 2800 h at 5 mAh −2 mA ultrahigh 2040 −1 . Furthermore, full‐cells paired LiFePO 4 cathodes possess remarkable retention 80.7% after 800 cycles 1 C. Even harsh conditions, /BC@Li||LiFePO can also run 100 0.3 C 84.9%. This work sheds light on surface engineering multiscale architecture design LMAs capacity.

Language: Английский

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Tailoring Na-ion flux homogenization strategy towards long-cycling and fast-charging sodium metal batteries

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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Heat-resistant PMIA separator with highly interconnected pore structure for thermally stable and high energy lithium-ion batteries

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Review and Future Perspectives on Lithium Battery Fire Safety: Focusing on Design of Organic Components

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

The widespread use of lithium batteries has led to frequent fire hazards, which significantly threaten both human lives and property safety. One the primary challenges in enhancing safety lies flammability their organic components. As electronic devices continue proliferate, integration liquid electrolytes separators become common. However, these components are prone high volatility leakage, limits Fortunately, recent advancements solid‐state gel have demonstrated promising performance laboratory settings, providing solutions issues. Typically, improving flame retardancy involves careful design formulations or molecular structures materials. Moreover, internal interfacial interactions also play a vital role ensuring This review examines innovative strategies developed over past 5 years address concerns associated with batteries. Future next generation high‐safety should not only focus on optimizing component but emphasize rigorous operational testing. dual approach will drive further progress battery research development, overall reliability systems.

Language: Английский

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Thermal safety overview of silicon-carbon anode in lithium-ion batteries: Key parameters in determining the reactivity

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

Published: March 1, 2025

Language: Английский

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Polybenzimidazole Composite Separators Engineered from MOFs‐HNTs Composites Applicated in Lithium‐Ion Batteries

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

Published: April 1, 2025

Abstract Incorporating inorganic nanostructured materials into polymeric separators for lithium‐ion batteries (LIBs) enhances properties such as ionic conductivity, electrolyte wettability, and thermal resistance. However, poor interfacial compatibility between the matrix remains a significant challenge. In this study, Zr‐based UiO‐66 metal‐organic frameworks (MOFs) is employed an binder halloysite nanotubes (HNTs) poly‐(arylene ether benzimidazole) (OPBI) matrix, preparing porous using non‐solvent phase separation (NIPS) method. The MOFs promote strong adhesion of HNTs to OPBI chains, creating more cohesive inorganic‐organic system, confirmed by molecular dynamics (MD) simulations binding energy. resulting OPBI@M‐H10 composite separator exhibits high porosity (80%), absorption capacity 377%, conductivity 1.59 mS·cm⁻¹. Furthermore, LiFePO 4 half‐cells assembled with show discharge 161 mAh·g⁻¹ retention rate 97.96% after 200 charge‐discharge cycles. also demonstrates excellent electrode stability in plating/stripping test Li symmetric cells, lasting up 1600 hours effectively inhibiting dendrite growth on anode. This approach provides promising solution high‐performance LIBs paves way advancements technology energy storage applications.

Language: Английский

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Thermoresponsive Mono‐Solvent Electrolyte Inhibiting Parasitic Reactions for Safe Lithium Metal Batteries

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

Published: April 10, 2025

Abstract Solvents in liquid and gel polymer electrolytes are recognized for contributing to high ionic conductivity high‐energy‐density lithium metal batteries. However, parasitic reactions involving solvents induce safety risks under thermal abuse conditions poor lifespan during room‐temperature cycles, which rarely investigated. This study introduces a thermoresponsive mono‐solvent electrolyte as built‐in switch. The polymerizes at elevated temperatures, creating passivate network without residue solvents. exhibits stability with 91% mass retention 200 °C significantly suppresses side between the electrolyte, reducing runaway risks. Ah‐level Li||LiNi 0.8 Co 0.1 Mn O 2 pouch batteries employing this can efficiently improve critical temperature of by 75 compared electrolyte. At ambient promotes formation stable solid interphase (SEI) rich LiF Li O, effectively dendrite growth on anode. Consequently, 0.5 0.2 0.3 cells retain capacity after 152 even high‐loading cathodes (19.7 mg cm −2 , 3 mAh ). research offers valuable insights into inhibiting electrochemical cycle runaway, enhancing

Language: Английский

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Self‐Lithiation Homogenized Electron‐Ion Distribution Interlayer for All‐Solid‐State Li Metal Batteries

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

Published: April 16, 2025

Abstract All‐solid‐state Li metal batteries (ASSLMBs) with sulfide solid‐state electrolytes (SSEs) are anticipated to be the next‐generation energy storage technology, potentially providing high density meanwhile enhancing safety. However, complicated solid–solid interface between SSEs and leads contact issues dendrite. In this contribution, a multifunctional hierarchical silicon carbon (H–Si/C) structure design is proposed as an interlayer metal. A homogeneous electron‐ion transport network established through Li–Si alloy formed by Si self‐lithiation nano‐carbon layer on surface, achieving compact interfacial dendrite‐free interlayer. The ASSLMBs assembled H–Si/C exhibit 70.28% capacity retention after 800 cycles at 0.5C. addition, H─Si/C interlayers can efficiently match high‐loading cathode, maintaining of 80.9% 200 under areal 3.4 mAh cm −2 , working well even ultra‐high loading 6.9 . This finding provides novel insights understand principles anode crucial for safety long lifespan ASSLMBs.

Language: Английский

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Overlooked issues on oxidation state analysis in electrode materials by X-ray photoelectron spectroscopy

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 644, P. 237093 - 237093

Published: April 23, 2025

Language: Английский

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Recent progress on the materials design towards thermally safe sodium-ion batteries

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 102, P. 555 - 575

Published: Nov. 22, 2024

Language: Английский

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