Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 159101 - 159101
Published: Dec. 1, 2024
Language: Английский
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 17, 2025
Abstract Electrolytes are crucial components in electrochemical energy storage devices, sparking considerable research interest. However, the significance of anions electrolytes is often underestimated. In fact, have significant impacts on performance and stability lithium batteries. Therefore, comprehensively understanding anion chemistry importance. Herein, in-depth comprehension its positive effects interface, solvation structure Li-ions, as well batteries been emphasized summarized. This review aims to present a full scope furnish systematic cognition for rational design advanced better with high density, lifespan, safety. Furthermore, insightful analysis perspectives based current proposed. We hope that this sheds light new electrolytes.
Language: Английский
Citations
7
Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103692 - 103692
Published: Aug. 1, 2024
Language: Английский
Citations
14
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)
Published: June 6, 2024
Non-aqueous electrolytes, generally consisting of metal salts and solvating media, are indispensable elements for building rechargeable batteries. As the major sources ionic charges, intrinsic characters salt anions particular importance in determining fundamental properties bulk electrolyte, as well features resulting electrode-electrolyte interphases/interfaces. To cope with increasing demand better batteries requested by emerging application domains, structural design modifications highly desired. Here, lithium other monovalent (e.g., sodium potassium) multivalent magnesium, calcium, zinc, aluminum) outlined. Fundamental considerations on provided, particularly involving specific requirements imposed different cell chemistries. Historical evolution possible synthetic methodologies representative reviewed. Recent advances tailoring anionic structures scrutinized, due attention is paid to paradigm shift from liquid solid intercalation conversion/alloying-type electrodes, kinds The remaining challenges key research directions development robust also discussed.
Language: Английский
Citations
8
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 101, P. 702 - 712
Published: Oct. 25, 2024
Language: Английский
Citations
8
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 19, 2024
Abstract High‐energy‐density lithium metal batteries (LMBs) hold enormous potential for future energy storage systems but are plagued by poor cycling stability and safety concerns, especially under high‐rate conditions. The addition of fluorinated solvents to the electrolyte is effective in enhancing anode (LMA) improving LMBs. However, extensive introduction not conducive transport lithium‐ions (Li + ), thereby negatively affecting rate performance Herein, a safe ether (SEE) designed that exhibits both high Li conductivity nonflammability, while maintaining compatibility with LMA. Li–LiNi 0.8 Mn 0.1 Co O 2 (NMC811) cells utilizing SEE can demonstrate remarkable electrochemical performance, delivering discharge capacity 113.1 mAh g⁻¹ at rates as 30 C 90% their initial over 300 cycles 10 C. Moreover, practical Li‐NCM811 full cell assembled achieves stable 3
Language: Английский
Citations
7
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 9, 2025
Abstract Lithium batteries, favored for their high energy density and long lifespan, are staples in electric vehicles, portable electronics, aerospace. A key component, Li salts, aids lithium ion migration electrode protection, significantly impacting battery performance. Developing an ideal salt, balancing stability, solubility, dissociation, solvation, eco‐friendliness, remains challenging. Given the scarcity of relevant reviews, it is endeavored here to present a novel perspective on salt chemistry, offering concise roadmap future designs innovations. It delved into trends, opportunities, design principles, evaluation methodologies related with particular emphasis organic anionic compositions. Furthermore, latest most representative salts from intrinsic structure coordination highlighting unique features contributions organized presented. Finally, visionary outlook articulated this field, exploring avenues, such as customizing specific applications, synthesizing demand, discussing potential F‐free alongside electrochemical window challenges. Here served strategic compass, addressing shortcomings existing reviews guiding functionalized salts.
Language: Английский
Citations
1
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 17, 2024
Abstract Ether‐based electrolytes show great potential in low‐temperature lithium metal batteries (LMBs) for their low viscosity and decent reduction stability. However, conventional ethers with multidentate chelate sites suffer from oxidation stability high desolvation energy barrier due to the strong coordination between oxygen Li + . Herein, cyclic tetrahydropyran (THP) a unidentate site is designed as solvent, fluoroethylene carbonate (FEC) nitrate (LiNO 3 ) serve additives LMBs. The strain effect endow THP weak affinity ions, which accelerates process induces anion‐derived electrode/electrolyte interface at temperature. formed inorganic‐rich further improves expedites interfacial ion transportation. As result, assembled Li‐LiNi 0.8 Mn 0.1 Co O 2 (NMC811) cell stably cycles 87% capacity retention after 100 −40 °C 4.5 V. 2.7 Ah Li‐NMC811 pouch an density of 403 Wh kg −1 delivers 53% room‐temperature −50 °C. This work reveals that regulating solvents can well optimize realize
Language: Английский
Citations
6
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 13, 2025
Abstract Currently, the design of lithium metal batteries primarily focuses on improving cycling stability by increasing fluoride (LiF) content in interfacial layer. However, extensive use fluorides poses severe environmental concerns. In this study, a novel strategy is proposed to construct Li 3 N/Li 2 O heterostructure via situ decomposition perchlorate (LiClO 4 ) and nitrate (LiNO ), replacing role LiF SEI. This unique combines excellent lithium‐ion transport capability with robust electronic insulation properties, effectively preventing electron tunneling phenomena. When paired NCM811 cathode, Li||NCM811 full cell exhibits exceptional electrochemical performance, including outstanding charge–discharge capabilities under extreme temperatures. At 60 °C 1C conditions, battery retains 82.11% its capacity after 500 cycles; at 25 1C, it maintains retention rate 80.61% 800 cycles. Furthermore, practical application conditions (100 µm anode, N/P ratio 3.09, 1.5 Ah pouch cell), fluorine‐free (LMB) 77.93% 100 cycles, demonstrating superiority value strategy.
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 25, 2025
Abstract Highly flammable carbonate electrolytes induce significant safety risk for lithium‐ion batteries (LIBs), raising concerns about their suitability large‐scale applications. In contrast, non‐flammable phosphate offer a potential solution, yet the untamed strong interaction of Li + ‐phosphates and inefficient diffusion result in sluggish reaction kinetics, which restricts operation Ah‐level LIBs to rates below 0.2C. Herein, chelating solvent‐mediated ion‐solvent coordinated structure is designed modulate interaction. This innovative approach enables high‐efficiency pseduo‐structrural diffusion, similar that observed high concentration electrolytes, while maintaining standard 1 mol L −1 achieving Li⁺ conductivity. The operating rate graphite|LiFePO 4 cells increased from 0.2C 2C, with Ah 25 retaining 73.9% 71.0% capacity after 1000 600 cycles, respectively. Additionally, maximum temperature during nail penetration significantly reduced 338.9 200 °C. strategy provides promising tuition developing advanced electrolytes.
Language: Английский
Citations
0
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: April 30, 2025
Developing high-energy-density lithium metal batteries (LMBs) necessitates robust solid electrolyte interphases (SEIs) capable of enduring prolonged cycling. While fluoride (LiF) is recognized as crucial for anode (LMA) protection, the effects different LiF sources in SEIs remain insufficiently understood. In this study, we systematically introduce single fluorine sources─anion LiF, solvent and native LiF─into a fluoride-free system to elucidate impact originating from on SEI composition properties. Results reveal that performance depends not only content but also coexisting organic components. During deep cycling, solvent-derived LiF-rich SEIs, containing elevated organics, offer superior LMA protection ability. These maintain structural integrity during significant volume changes, effectively suppressing dead Li formation achieving enhanced Coulombic efficiency. This work reexamines LiF's protective mechanisms while advancing chemistry understanding, providing critical insights developing high-performance LMBs.
Language: Английский
Citations
0