Chemical Communications, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
High-Ni cathodes promise high energy density but suffer from interfacial degradation. Here, a dual-additive electrolyte-trimethylsilyl phosphate to scavenge HF and adiponitrile tailor Li+ solvation-enables robust, LiF-rich CEI, boosting NCM811's stability. This strategy achieves 90.16% capacity retention at 5C, offering pathway durable, high-performance batteries.
Язык: Английский
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Апрель 18, 2025
Lithium dendrites, with their high reactivity, pose a critical challenge to the safety and longevity of lithium-based batteries. Effective regulation strategies are crucial for mitigating battery degradation enhancing reliability. Conventional approaches, such as relaxation following lithium plating or regulated discharging, often fail simultaneously address formation solid electrolyte interface isolated lithium. Here, we demonstrate that rational utilization electric field dendrite growth can reduce defective by balancing morphology smoothing near time constant. Building upon mechanism, propose short-term method manipulate plating, which achieves an enhancement capacity retention from 80% up 95% at 3 C-rate (20 min) fast-charging on commercial These findings highlight importance after dendrites safe, long-life batteries, particularly where is limiting factor.
Язык: Английский
Процитировано
1
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 6, 2025
Abstract Sulfide electrolytes are considered the most promising technique for all‐solid‐state lithium–sulfur batteries (ASLSBs) due to relatively high ionic conductivity and superior chemical compatibility with composite sulfur cathodes. However, cathodes based on sulfide feature large volume expansion, unstable interfacial contact, inherent insulating nature, which impedes practical application of ASLSBs. Therefore, a systematic design cathode side ASLSBs is crucial ensuring well‐contacted, electrochemically stable cathode–electrolyte interface, an effective ion‐electron transfer network. Here, comprehensive discussion latest strategies will be delivered, highlighting their effectiveness in improving performances First, major challenges including slow oxidation kinetics significant expansion dissected. Then, focus shifted degradation processes at interface between electrolyte. Subsequently, improvement stability by structural modulation elaborated. Finally, progress, we present new perspective constructing efficient transport network cathode‐electrolyte offers insights directions achieving future.
Язык: Английский
Процитировано
0
Science China Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Апрель 21, 2025
Язык: Английский
Процитировано
0
Nano Letters, Год журнала: 2025, Номер unknown
Опубликована: Апрель 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.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Май 26, 2025
Abstract Sodium‐potassium (Na‐K) alloys are recognized as a promising anode material due to their unique liquid properties at room temperature, which endow them with self‐healing ability and dendrite‐free potential. However, the nature of Na‐K also introduces significant instability, undermines inherent advantages thus restricts practical application. In this work, semi‐solid consisting homogeneous mixture solid phases is developed, aiming enhance stability while preserving original benefits. The synergistic interaction between enables integrate both anodes, thereby demonstrating excellent comprehensive performance. Notably, when matched NaClO 4 electrolyte, formation electrolyte interphase containing KClO crystal layers observed, possesses high modulus inhibit dendrite growth promote uniform deposition. As result, full cells utilizing achieve capacity retention 89.18% after 1000 cycles 1 C, rate performance, 93 mAh g⁻ 20 C. This work expands application potential alloy anodes provides constructive approach for high‐performance Na metal anodes.
Язык: Английский
Процитировано
0
Chemical Communications, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
High-Ni cathodes promise high energy density but suffer from interfacial degradation. Here, a dual-additive electrolyte-trimethylsilyl phosphate to scavenge HF and adiponitrile tailor Li+ solvation-enables robust, LiF-rich CEI, boosting NCM811's stability. This strategy achieves 90.16% capacity retention at 5C, offering pathway durable, high-performance batteries.
Язык: Английский
Процитировано
0