Biopolymer‐Based Flame Retardants and Flame‐Retardant Materials

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

Published: Jan. 8, 2025

Abstract Polymeric materials featuring excellent flame retardancy are essential for applications requiring high levels of fire safety, while those based on biopolymers highly favored due to their eco‐friendly nature, sustainable characteristics, and abundant availability. This review first outlines the pyrolysis behaviors biopolymers, with particular emphasis naturally occurring ones derived from non‐food sources such as cellulose, chitin/chitosan, alginate, lignin. Then, strategies chemical modifications flame‐retardant purposes through covalent, ionic, coordination bonds presented compared. The is placed advanced methods introducing biopolymer‐based retardants into polymeric matrices fabricating materials. Finally, challenges sustaining current momentum in utilization further discussed.

Language: Английский

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Regulating Homogeneous Reactions for Stable Lithium Metal Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Discontinuous and uneven Li+ flux leads to inhomogeneous reactions, accelerating lithium (Li) dendrite growth reducing the utilization of active materials, which severely impacts performance metal batteries (LMBs). To address this challenge, we propose an effective homogeneous reaction design facilitated by all-aligned nanofibrous architecture, establishes continuous, uniform, rapid pathways throughout battery. This enhances diffusion dynamics ensures a uniform distribution current density, hence promoting Li nucleation at anode efficient insertion/extraction cathode. Moreover, architecture exhibits superior mechanical strength flexibility, maintaining structural stability during long-term cycling suppressing growth, thereby minimizing risk short circuits. As result, LMBs incorporating exhibit exceptional electrochemical performance. work provides valuable insights into reactions for high-performance LMBs.

Language: Английский

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Functionalizing separator for dual application in liquid and solid-state lithium metal batteries: Achieving stable cycling from − 20 °C to 60 °C

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160830 - 160830

Published: Feb. 1, 2025

Language: Английский

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Anions‐Trappable Hollow Mesoporous Nanoparticle Coating Enables High‐Performance and Safe Lithium Metal Batteries

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

Published: Sept. 9, 2024

Abstract Polyolefin separators, such as polypropylene (PP) and polyethylene (PE) are the commonly used separators for lithium batteries, which have good mechanical properties chemical/electrochemical stability, but their high‐temperature dimensional stability is poor Li + transference number ( t ) low. Recently, much attention has been paid to developing with new substrates, so far there no separator replace polyolefin large‐scale application. Therefore, surface modification of enhance its functionality a simple effective method. Among many modified layers, porous layer can store electrolyte provide enough space ion transport. In this work, hollow mesoporous silica nanosphere (mSiO 2 prepared PP multifunctional coating improve electrochemical performance safety separator. The experimental theoretical results show that mSiO not only wettability separator, also promote transport, /PP exhibits high ionic conductivity (2.35 mS cm −1 (0.63). As result, Li//LiFePO 4 cells using exhibit excellent cycling performance, rate safety.

Language: Английский

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Functionalized polypropylene separator coated with polyether/polyester blend for high-performance lithium metal batteries

Energy Materials, Journal Year: 2024, Volume and Issue: 4(4)

Published: May 21, 2024

Commercial polyolefin separators used in lithium metal batteries (LMBs) have the disadvantages of insufficient thermal stability and poor wettability with electrolytes, which causes bad safety battery performance. Poly(ε-caprolactone) (PCL)-based electrolytes drawn widespread attention field polymer owing to their electrochemical high lithium-ion transference number. This work proposes a strategy functionalizing commercial polypropylene (PP) separator coated by blending PCL (M w ~ 50,000) poly(ethylene oxide) (PEO, M V 600,000). Compared PP separators, PP-blended PEO60w/PCL5w possess better performances. The initial discharge specific capacity LiFePO4-based LMBs assembled reaches 144 mAh g-1 (1C) 103 (5C) at room temperature, respectively. Notably, Li/PP-blended PEO60w/PCL5w/LiFePO4 shows an improved retention rate 77% after 800 cycles, confirming that functionalized PEO/PCL blend has great potential for application LMBs.

Language: Английский

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Synthesis and modification of LiFePO₄ lithium-ion battery cathodes: A mini review

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(26), P. 3441 - 3454

Published: Jan. 1, 2024

This review systematically investigates the lithium storage mechanism of LiFePO 4 as well its synthesis and modification strategies.

Language: Английский

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Controllable etching Co/Fe-based Prussian blue analogue promoting uniform Li+ plating/stripping behavior for lithium metal batteries

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 638, P. 236634 - 236634

Published: Feb. 28, 2025

Language: Английский

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Intelligent Strategy of Lithium Metal Reconstruction through Generation of a Protective Layer and Regulating Lithium Deposition

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Lithium metal has been considered as the most promising anode for next-generation batteries. However, its high reactivity with electrolyte and growth of lithium dendrites hamper application metal-based Herein, we demonstrate that polyphosphides (LixPPs) can be dissolved in diethyl carbonate (DEC) used a reconditioner generating protective layer regulating deposition Li anode. Since LixPPs are reduced prior to lithiation process, their product uniform tight at surface metal. The situ-formed protection superhigh ionic conductivity, thickness easily controlled by tuning amount LixPPs, thus facilitating interface stability. Li-Li symmetry batteries show stable cycling performance 2 mA cm-2 1 mAh over 5000 h. Interestingly, it exhibits self-healing function on scratched

Language: Английский

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Development of a Thin Three-Dimensional Ag Gradient Cu-Separator Scaffold for Stable and High-Energy Lithium Metal Batteries

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Adopting three-dimensional (3D) scaffolds onto lithium metal anode has emerged as a promising strategy to improve the charge/discharge stability of next-generation high-energy-density batteries (LMBs). However, undesirable growth Li dendrites on scaffold's surface and their high-cost fabrication methods remain challenging. To address these issues, herein, functional 3D scaffold employing lithiophilic Ag concentration gradient (3D Ag@Cu) is designed, which can be prepared via simple galvanic displacement. The reacts with form solid solution, reducing nucleation overpotential promoting uniform deposition. Furthermore, Ag-gradient structure facilitates bottom-up within scaffold, maximizing use internal space. Consequently, full-cell equipped Ag@Cu demonstrated higher cycling (89.03% capacity retention after 110 cycles) rate performance (65.6% at 2 C) compared both LMBs planar Cu foil bare scaffold.

Language: Английский

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Metaverse For Battery Manufacturing: Connecting Students From Different Geographical Locations To Solve Battery Manufacturing Problems In The Virtual Reality Space

Batteries & Supercaps, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Laboratory practices are essential to prepare students and professionals drive future innovations in the field of energy storage conversion. However, universities industries working battery encounter challenges concerning effective training on production complexities, mostly due lack access prototyping facilities or its limited availability for purposes. This concept introduces an innovative educational platform virtual reality (VR) named manufacturing metaverse (BMM). BMM promotes accessibility collaborative learning lithium–ion (LIB) through interactive flexible VR representation a LIB pilot line. It enables collaboration among individuals from different geographical locations. Users can explore electrode cell chemistries, adjust parameters with informative feedback cell's composition functioning equipment. does it real‐time using avatars voice chat. aims connect Interdisciplinarity Materials Energy Storage Conversion, Erasmus+ MSc. Program, enabling seamless knowledge sharing training. represents transformative step research education, offering immersive, environment without barriers pave way towards global education safe sector.

Language: Английский

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