Science Bulletin, Год журнала: 2025, Номер unknown
Опубликована: Апрель 1, 2025
Язык: Английский
Small Methods, Год журнала: 2024, Номер 8(11)
Опубликована: Апрель 22, 2024
Abstract Improving the wide‐temperature operation of rechargeable batteries is crucial for boosting adoption electric vehicles and further advancing their application scope in harsh environments like deep ocean space probes. Herein, recent advances electrolyte solvation chemistry are critically summarized, aiming to address long‐standing challenge notable energy diminution at sub‐zero temperatures rapid capacity degradation elevated (>45°C). This review provides an in‐depth analysis fundamental mechanisms governing Li‐ion transport process, illustrating how these insights have been effectively harnessed synergize with high‐capacity, high‐rate electrodes. Another critical part highlights interplay between interfacial reactions, as well stability resultant interphases, particularly employing ultrahigh‐nickel layered oxides cathodes high‐capacity Li/Si materials anodes. The detailed examination reveals factors pivotal mitigating fade, thereby ensuring a long cycle life, superior rate capability, consistent high‐/low‐temperature performance. In latter part, comprehensive summary situ/operational presented. holistic approach, encompassing innovative design, interphase regulation, advanced characterization, offers roadmap battery technology extreme environmental conditions.
Язык: Английский
Процитировано
12
Energy storage materials, Год журнала: 2024, Номер 72, С. 103698 - 103698
Опубликована: Авг. 11, 2024
Язык: Английский
Процитировано
12
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 20, 2024
Abstract With the growing demand for high‐voltage and wide‐temperature range applications of lithium‐ion batteries (LIBs), requirements electrolytes have become increasingly stringent. While fluorination engineering has enhanced performance traditional solvent systems, it also raised concerns regarding cost, environmental hazards, low reduction stability. Through strategic molecular bond design, a novel class low‐temperature (LT) solvents—siloxanes—is identified, meeting demands LT in LIBs. The d‐p conjugation Si─O enhances voltage resistance weakens Li + ‐solvent interactions. By modulating number conjugated bonds, type anion clusters solvation structure can be controlled, ultimately leading to formation LiF Si─O‐rich interfacial layer facilitating rapid conduction. Consequently, graphite||NCM811 pouch cell (2.3 Ah, 4.45 V) with siloxane‐based electrolyte retains 75.1% room temperature capacity (RTC) at −50 °C. interface kinetics allow superior reversible charging retention 67.6% −40 °C, good cycle stability −20 This study provides new insights into design fortify LIB harsh conditions.
Язык: Английский
Процитировано
11
Next Energy, Год журнала: 2024, Номер 3, С. 100115 - 100115
Опубликована: Март 23, 2024
Lithium-ion batteries (LIBs) often encounter performance decline issues in cold conditions when temperature significantly drops, despite being widely regarded as a leading battery technology. Functioning typical rocking-chair battery, lithium ions shuttle through the "blood" (the electrolyte) of LIBs between graphite anode commonly-used negative electrode) and intercalation compound cathode (positive electrode), where ion movement tends to slow down with decreasing temperature. Considering relative maturity electrode materials, researchers generally pay attention electrolyte corresponding electrode/electrolyte interphase order accelerate transport. In light significant advancements, we herein try delineate categorize engineering depict what next can be done build better suitable for cooler temperatures near future. Specifically, advances are summarized goal improving ionic conductivity bulk electrolyte, facilitating desolvation dynamics at interface, accelerating across interfacial film. Furthermore, viable strategies outlined understand design principles low-temperature inspire more endeavors overcome critical challenges faced by extreme conditions.
Язык: Английский
Процитировано
10
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Июль 8, 2024
Abstract The high energy density of lithium metal batteries (LMBs) makes them a promising battery research target. However, the solid electrolyte interphase (SEI) instability causes dendrite formation/growth and short circuits. Electrolyte engineering can regulate intrinsic properties SEI due to composition strongly depend on component. In this work, 2,4,6,8‐tetramethyl‐2,4,6,8‐tetravinylcyclotetra‐siloxane (V4) is paired with vinyl‐triethoxy‐silane (VTEO) obtain novel ester‐based additive. Decomposition V4 molecules into silicon‐based polymer‐rich Li anode surface has been predicted theoretically verified experimentally. Through ─CH═CH 2 addition polymerization preformed polymer layers which originates from decomposition V4, VTEO be integrated films their “molecular bridge” structure. organic functional group (─OCH CH 3 ) promotes + transport kinetics forms Si─O─Li bonds under presence OH − , improving interface stability. experimental results show that cycle life LFP‐Li full over 1000 500 cycles at 5 C 10 C, respectively. This elucidates reliable strategy for constructing film adhesion long‐term viability anode.
Язык: Английский
Процитировано
10
Virtual and Physical Prototyping, Год журнала: 2025, Номер 20(1)
Опубликована: Фев. 6, 2025
Extreme low-temperature environments, such as those in aerospace, polar expeditions, and deep-sea exploration, demand efficient energy storage systems. Conventional technologies face major limitations under these conditions, including electrolyte freezing, restricted interfacial reaction kinetics, microstructural instability. In contrast, 3D printing offers transformative solutions with precise control, multifunctional material integration, optimisation, effectively addressing challenges related to compatibility structural complexity. However, the mechanisms for optimising performance remain poorly understood, of processes materials needs further exploration. Moreover, comprehensive integration materials, processes, device designs remains an ongoing challenge. This review systematically summarises key their characteristics storage, exploring potential pathways through which enhances performance. Particular emphasis is placed on its unique applications design, engineering, multi-material coupling. Unlike studies focused single or technologies, this adopts interdisciplinary systematic framework, linking properties optimisation. It provides critical theoretical guidance practical insights advancing scientific understanding engineering extreme technologies.
Язык: Английский
Процитировано
2
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 16, 2025
Abstract The battery formation process is pivotal for constructing a solid electrolyte interphase (SEI) on graphite anodes, generally conducted at high temperatures. However, the resulting excessive SEI film causes significant lithium loss and an inferior charging rate. Herein, unconventional low‐temperature technology based innovative temperature‐responsive with anion‐dominated solvation structure low temperature validated. During cycling 5 °C, enhanced anion–cation interaction, coupled suppressed solvent decomposition, facilitates generation of thin fluoride‐rich film. Consequently, anodes exhibit 5C fast‐charging performance (198.89 mAh g −1 , 53.39% theoretical capacity), successfully overcoming rate bottleneck 2C commonly encountered in commercial realize 95.88% capacity retention after 400 cycles 0.5C. Moreover, compared to traditional high‐temperature formation, saves 52.73% (from 22.02 10.42 h) time reduces from 16.76% 7.21%. This work highlights importance opportunities utilizing as “driving force” regulating interfacial chemistry.
Язык: Английский
Процитировано
2
Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)
Опубликована: Авг. 29, 2024
Fluorinated ether-based electrolytes are commonly employed in lithium metal batteries (LMBs) to attenuate the coordination ability of ether solvents with Li
Язык: Английский
Процитировано
7
ACS Energy Letters, Год журнала: 2024, Номер 9(8), С. 3931 - 3938
Опубликована: Июль 17, 2024
Язык: Английский
Процитировано
5
Angewandte Chemie, Год журнала: 2024, Номер 136(33)
Опубликована: Май 29, 2024
Abstract Dual‐ion batteries (DIBs) present great application potential in low‐temperature energy storage scenarios due to their unique dual‐ion working mechanism. However, at low temperatures, the insufficient electrochemical oxidation stability of electrolytes and depressed interfacial compatibility impair DIB performance. Here, we design a variant‐localized high‐concentration solvation structure for universal ( ν ‐LHCE) without phase separation via introducing an extremely weak‐solvating solvent with levels. The gives ‐LHCE enhanced stability. Meanwhile, can competitively participate Li + ‐solvated coordination, which improves transfer kinetics boosts formation robust interphases. Thus, electrolyte not only has good high‐voltage >5.5 V proper transference number 0.51 but also shows high ionic conductivities 1 mS/cm temperatures. Consequently, enables different types achieve excellent long‐term cycling rate capability both room Especially, capacity retentions are 77.7 % 51.6 %, −40 °C −60 °C, respectively, indicating applications, such as polar exploration, emergency communication equipment, station cold regions.
Язык: Английский
Процитировано
4