Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157927 - 157927
Published: Nov. 1, 2024
Language: Английский
Carbon Neutralization, Journal Year: 2025, Volume and Issue: 4(2)
Published: Feb. 21, 2025
ABSTRACT Lithium iron phosphate (LiFePO 4 ) serves as a commonly used cathode material in lithium‐ion batteries and is an essential power source for consumer electronics electric vehicles. Nevertheless, significant degradation its electrochemical performance occurs at low temperatures, leading to energy losses, challenges charging, reduced lifespan, heightened safety concerns—critical factors LiFePO applications. This review outlines recent progress aimed enhancing the low‐temperature of batteries, concentrating on mechanisms involved various modification strategies. The primary contributing subzero temperatures are first examined. A variety strategies designed improve interfacial internal reaction kinetics cathodes under cold conditions emphasized, feasible approaches also presented. These include optimizing cell design enhance inherent reactivity employing heating techniques raise external temperatures. In conclusion, this discusses limitations associated with settings examines advancements from system level. insights provided intended motivate further developments other technologies tailored
Language: Английский
Citations
1
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
Citations
4
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 2, 2025
Abstract The high‐capacity silicon (Si) anode usually suffers from rapid capacity decay and low Coulombic efficiency in carbonate electrolytes resulting large volume expansion unstable solid electrolyte interphase (SEI). In addition, the sluggish electrode kinetics routine at subzero temperatures severely hampers operational capabilities of Si‐based batteries. Herein, a rational design strategy is reported to tune solvation chemistry interfacial behavior for high‐performance Si anode. stability electrochemical reaction can be enhanced simultaneously both room temperature ultralow by combining two kinds ether‐based solvents (cyclopentylmethyl ether tetrahydrofuran), which enables high cation conductivity, Li‐ion desolvation barrier, formation robust LiF‐elastic polymer SEI. Consequently, optimized extends cyclability anode, maintaining more than 80% retention over 200 cycles −20 −35 °C. Even −40 °C, still delivers reversible 2157.0 mAh g −1 , showing highest 68.5% up date relative its room‐temperature capacity. Moreover, assembled full cells Si||LiFePO 4 Si||LiNi 0.8 Co 0.1 Mn O 2 demonstrate excellent performance with no degradation 180 120 cycles, respectively,
Language: Английский
Citations
0
Materials Today, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Language: Английский
Citations
0
Applied Energy, Journal Year: 2025, Volume and Issue: 388, P. 125720 - 125720
Published: March 15, 2025
Language: Английский
Citations
0
Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown
Published: March 30, 2025
Abstract Benefiting from the high theoretical energy density, low cost, and environmental protection, lithium‐sulfur (Li‐S) battery is one of most competitive candidates for next generation high‐energy‐density batteries. However, rate low‐temperature performances are poor due to terrible dynamics S cathode. Herein, a four‐electrode Li‐S cell integrated with an electrothermal interlayer designed realize internal heating. An composed Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) carbon nanotube (CNT) prepared displays fast, uniform, adjustable heating ability under applied voltages 15‐30 V. The also conducive improving wetting thermal stability separator. Meanwhile, + ion conductivity transfer number in situ polymerized electrolyte enhanced after integrating interlayer, especially at temperatures.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 3, 2025
Abstract As the global energy structure transforms and renewable rapidly develops, rechargeable batteries are increasingly focus on high density, rapid charge/discharge rates, enhanced safety performance, particularly in extreme environments. Lithium metal (LMBs) have emerged as a significant research area recent years owing to capacity low electrochemical potential of lithium (Li). However, challenges, uncontrolled Li dendrite growth, unstable solid electrolyte interface separator puncture/interface incompatibility, greatly impact battery life lead failure, thus impeding commercialization. This review presents thorough analysis key challenges facing stable LMBs from multiple perspectives, alongside regulatory strategies. The methods include anode, interface, solid/liquid electrolytes, separators, pressure artificial intelligence. An in‐depth discussion operational mechanism, advantages/drawbacks is provided. Additionally, it offers succinct overview anticipated future trends challenges. A comprehensive numerous documents studies has been conducted summarize number published papers unique characteristics corresponding provides valuable recommendations for practical application other high‐energy‐density (Sodium, Potassium, Magnesium, Zinc), thereby contributing effectively implementation national strategic planning new sector.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 21, 2025
Abstract Low‐concentration electrolytes (LCEs) present significant potential for actual applications because of their cost‐effectiveness, low viscosity, reduced side reactions, and wide‐temperature electrochemical stability. However, current electrolyte research predominantly focuses on regulation strategies conventional 1 m electrolytes, high‐concentration localized leaving design principles, optimization methods, prospects LCEs inadequately summarized. face unique challenges that cannot be addressed by the existing theories approaches applicable to three common mentioned above; thus, tailored provide development guidance are urgently needed. Herein, a systematic overview recent progress in is provided subsequent directions suggested. This review proposes core challenge high solvent ratio LCEs, which triggers unstable organic‐enriched electrolyte/electrode interface formation anion depletion near anode. On basis these issues, modification including passivation construction solvent‒anion interaction optimization, used various rechargeable battery systems. Finally, role advanced simulations cutting‐edge characterization techniques revealing LCE failure mechanisms further highlighted, offering new perspectives future practical application next‐generation batteries.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157927 - 157927
Published: Nov. 1, 2024
Language: Английский
Citations
1