Langmuir, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 20, 2024
All-solid-state lithium metal batteries (ASSLMBs) have been regarded as promising candidates to settle the safety issues of liquid electrolytes for rechargeable batteries. However, currently reported gel polymer still flammable solvents, thus leading potential hazard. Here, solvent-free deep eutectic solid (SPEs) are designed and fabricated via an
Language: Английский
New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Practical Li metal batteries (LMBs) demand electrolytes that stabilize ultra-thin (<20 μm) or Li-free anodes while resisting extreme temperatures.
Language: Английский
Citations
0
Small Methods, Journal Year: 2025, Volume and Issue: unknown
Published: May 22, 2025
Abstract Lithium metal batteries (LMBs) are highly valued due to their high energy density. However, LMBs severely hindered by the unstable solid electrolyte interphase (SEI), which requires a rational design of interface engineering. Herein, dual protection strategy Li‐metal anode is proposed via coating black phosphorus (BP) layer on separator. During battery assembly process, few‐layer BP nanosheets can be peeled off and uniformly modified lithium surface, soft metallic properties lithium, meanwhile, remaining remains separator, so that they provide two types during initial formation cycling processes, respectively. lithiation, stripped converted Li 3 P, beneficial component for stable fast‐dynamic SEI. In addition, when dendrites dramatically generated under extreme conditions, separator melt owing activity alloying reaction. Therefore, BP‐modified facilitates large‐scale application metal, with generalisability in both ester ether electrolytes. electrolyte, lifetimes Li||Li cells prolonged over 2200 h, Li||LiFePO 4 exhibit superior capacity retention 78% after 500 cycles at 1 C.
Language: Английский
Citations
0
ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 28, 2025
Language: Английский
Citations
0
Journal of Power Sources, Journal Year: 2025, Volume and Issue: 650, P. 237489 - 237489
Published: May 31, 2025
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: June 4, 2025
Abstract Ether‐based electrolytes promise superior interfacial stability with lithium metal under high salt concentration, while poor oxidative limits the high‐voltage operation. Extending intrinsic electrochemical window and reducing concentration to design batteries is challenging urgent. Herein, lightweight based on intermolecular interactions regulated by ternary anion chemistry are proposed. An anion‐enriched solvation structure achieved at a standard (1 m ) via enhanced ion‐dipole interactions, generating an inorganic‐rich electrode‐electrolyte interphase enabling facile plating/stripping kinetics. This results in exhibiting average Coulombic efficiency of 97.9% prolonged cycling lifespan (1000 h) 2 mA cm⁻ . The hydrogen bond‐like between NO 3 − /TFSI tetrahydrofuran, coupled preferential decomposition DFOB Ni‐rich cathode, boosts electrolyte mitigates structural degradation cathode. Consequently, Li||LiNi 0.8 Co 0.1 Mn O cells demonstrate improved (retaining 75% capacity after 300 cycles) rate capability (153.6 mAh g⁻ 1 5C) cathode loading. work supplies molecular‐level strategy for low‐concentration tailored batteries, offering promising pathway toward practical high‐energy‐density storage systems.
Language: Английский
Citations
0
Nano Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 7, 2024
The composition and physiochemical properties of the solid electrolyte interphase (SEI) significantly impact electrochemical cyclability Li metal. Here, we introduce a trace dual-salt additive (TDEA) that accelerates LiF production from FEC decomposition improves distribution, resulting in earlier precipitation formation LiF-rich SEI on anode. TDEA at millimolar-level concentration was found to alter morphology deposited Li, suppress dendrite formation, increase cycling time operating current density for anodes. Li∥NCM811 full cells using TDEA-based electrolytes exhibited approximately two times longer lifespan than those without additives. Additionally, enabled high energy 347 Wh kg
Language: Английский
Citations
2
Materials Today Energy, Journal Year: 2024, Volume and Issue: 46, P. 101734 - 101734
Published: Nov. 2, 2024
Language: Английский
Citations
2
Next Materials, Journal Year: 2024, Volume and Issue: 5, P. 100228 - 100228
Published: May 14, 2024
The poly (ethylene oxide) (PEO) solid polymer electrolytes suffer from narrow electrochemical stability window and cannot match high voltage lithium cobalt oxide (LCO) cathode. Herein, an ultrathin Al2O3 nanolayer was uniformly deposited on the surface of LCO via powder atomic layer deposition (PALD) to realize electrolyte cycling stability. PEO contains 20 % (w/w) difluoro(oxalate)borate (LiDFOB) 7.5 titanium aluminum phosphate (LATP) with cellulose nonwoven as a support substrate. exhibitsionic conductivity 1.2×10−4 S cm−1, 4.5 V (vs. Li+/Li) lithium-ion transference number 0.38. Al2O3@LCO/PEO-LiDFOB20%-LATP7.5%/Li cell at cut-off delivered better initial discharge specific capacity 178.5 mAh g−1 achieved retention ratio 81.6 after 200 cycles under 0.1 C 50 °C. Further analysis showed that served stable protective suppress generation strong oxidative Co4+ O– species separate electrolyte, inhibiting side reactions cathode-side interface. Therefore, architecting precise interface cathode PALD is conducive performance electrolyte.
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(33), P. 43114 - 43133
Published: Aug. 7, 2024
Solid-state electrolytes (SSEs), as the heart of all-solid-state batteries (ASSBs), are recognized next-generation energy storage solution, offering high safety, extended cycle life, and superior density. SSEs play a pivotal role in ion transport electron separation. Nonetheless, interface compatibility stability issues pose significant obstacles to further enhancing ASSB performance. Extensive research has demonstrated that control methods can effectively elevate This review delves into advancements recent progress interfacial engineering over past years. We discuss detailed effects various regulation strategies directions on performance, encompassing Li
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 27, 2024
Abstract The development of cobalt‐free, high‐energy‐density cathode materials is an important prerequisite for the commercialization next generation high‐energy‐density, cost‐effective lithium batteries. Co‐free spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) with simultaneous Ni and multi‐cation redox reactions possesses a high theoretical specific capacity 230 mAh g −1 energy density 865 Wh kg . Unfortunately, LNMO cycled at 2.3–4.95 V suffered from severe interfacial dynamic evolution electrolyte decomposition, leading to uncontrollable transition metal dissolution rapid decrease reversible capacity. Here, It demonstrated that addition appropriate amount difluorophosphate (LiDFP) common carbonate‐based can achieve stable cycling in voltage range V. LNMO‐Li cell retained 82.8% its initial (175.2 ) after 300 cycles. improved cycle performance attributed robust interface formed by decomposition LiDFP, which inhibits metals continued electrolyte. This work provides insights cobalt‐free
Language: Английский
Citations
1