Research on performance constraints and electrolyte optimization strategies for lithium-ion batteries at low temperatures

RSC Advances, Год журнала: 2025, Номер 15(10), С. 7995 - 8018

Опубликована: Янв. 1, 2025

This review examines the limitations of LIBs at low temperatures, discusses advancements in electrolyte components and novel formulations, proposes future strategies to improve performance under extreme conditions.

Язык: Английский

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Topological Design of Highly Conductive Weakly Solvating Electrolytes for Ultrastable Sodium Metal Batteries Operating at −60 °C and Below

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Weakly solvating electrolytes (WSE) can favor reversible Na batteries at -40 °C for some extreme applications because of the low desolvation energy. However, it is challenging to enable lower temperatures. Herein, we uncover that ionic conductivity WSE reduces reaction kinetics -60 °C. Accordingly, a highly conductive weakly electrolyte (HCWSE) designed by introducing additives strongly solvents and dilution NaPF6. The additive dominate solvation sheath, increase dissociation NaPF6 fluidity electrolyte, thus greatly improve conductivity. Furthermore, binding energy between Na+ proposed as descriptor determine power solvents, based on which series ultralow-temperature HCWSEs have been topologically facilely strong-solvation ether into weak-solvation solvents. As demonstration, HCWSE showcases long cycling Na||Na cell with an overpotential 42 mV under 1 mA cm-2 1200 h. Na||NNFM (Na0.75Ni0.25Fe0.25Mn0.5O2) exhibits capacity 79.2 mAh g-1 after 160 cycles. cells also achieve impressive performances -70

Язык: Английский

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Solvation chemistry in liquid electrolytes for rechargeable lithium batteries at low temperatures

EcoEnergy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Abstract Over the past few decades, significant advancements have been made in development of low‐temperature liquid electrolytes for lithium batteries (LBs). Ongoing exploration is crucial further enhancing performance these batteries. Solvation chemistry plays a dominant role determining properties electrolyte, significantly affecting LBs at low temperatures (LTs). This review introduces solvation structures and their impact, discussing how promote fast desolvation processes contribute to improvement battery performance. Additionally, various solvent strategies are highlighted refine LTs, including use linear cyclic ethers/esters, as well functional groups within solvents. The also summarizes impact salts containing organic/inorganic anions on chemistry. Characterization techniques discussed, providing comprehensive analysis that offers valuable insights developing next‐generation ensure reliable across wide temperature range.

Язык: Английский

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Electrolyte Chemistry Modulation Toward High‐Performance and Ultralow‐Temperature Silicon Anode

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 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,

Язык: Английский

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Engineering the Solid Electrolyte Interphase for Enhancing High-Rate Cycling and Temperature Adaptability of Lithium-Ion Batteries

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The new lithium salt additive prevents the decomposition of VN and promotes formation a SEI film rich in RSO 3 LiF on graphite electrode surface.

Язык: Английский

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A Temperature‐Adapted Ultraweakly Solvating Electrolyte for Cold‐Resistant Sodium‐Ion Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Sodium‐ion batteries are applied to cold‐resistant energy storage hindered by phase transitions and sluggish Na + migration of traditional carbonate‐based electrolytes at low temperatures. The desolvation is a crucial step in impeding the transport , which primarily attributes robust solvent coordination . Herein, low‐temperature adaptive electrolyte with an ultraweakly coordinated 1,3‐dioxolane (DOL) designed for constructing anion‐rich solvation structure diglyme (G2)‐based electrolyte. electronegativity oxygen atoms G2 attenuated dipole‐dipole interaction between DOL G2. As temperature drops, weakened ‒O (G2) leads increased anionic less coordination, facilitating This anionic‐enhanced contributes formation stable solid interface hard carbon (HC) anode, accelerates diminishing voltage polarization Consequently, HC anode can retain high capacity 203.9 mAh g ‒1 (1 C) ‒50 °C, pouch cell composed HC||Na 3 V 2 (PO 4 ) ‒30 °C achieves retention 92.43% after 100 cycles 0.1 C. strategy guides design ultra‐low broadens range applications sodium‐ion batteries.

Язык: Английский

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Temperature-Robust Solvation Enabled by Solvent Interactions for Low-Temperature Sodium Metal Batteries

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

The broad temperature adaptability associated with the desolvation process remains a formidable challenge for organic electrolytes in rechargeable metal batteries, especially under low-temperature (LT) conditions. Although traditional approach involves utilizing high degree of anion participation solvation structure, known as weakly (WSEs), structure these is highly susceptible to fluctuations, potentially undermining their LT performance. To address this limitation, we have devised an innovative electrolyte that harnesses interplay between solvent molecules, effectively blending strong and weak solvents while incorporating mostly unchanged by variations. Remarkably, competitive coordination two molecules introduces local disorder, which not only boosts ionic conductivity but also prevents salt precipitation solidification. Therefore, has 3.12 mS cm-1 at -40 °C. Na3V2(PO4)3||Na cells demonstrated reversible capacity 95.9 mAh g-1 °C, 87.6% room temperature, well stable cycling 3400 cycles retention 98.2% -20 °C 5 C 600 96.1% 1 C. This study provides new perspective on designing regulating temperature-robust structures.

Язык: Английский

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Research progress in froth flotation for recycling of spent lithium-ion batteries

Minerals Engineering, Год журнала: 2025, Номер 227, С. 109275 - 109275

Опубликована: Апрель 5, 2025

Язык: Английский

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Push–Pull Electrolyte Design Strategy Enables High-Voltage Low-Temperature Lithium Metal Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Сен. 27, 2024

Lithium (Li) metal batteries hold significant promise in elevating energy density, yet their performance at ultralow temperatures remains constrained by sluggish charge transport kinetics and the formation of unstable interphases. In conventional electrolyte systems, lithium ions are tightly locked solvation structure, thereby engendering difficulty desolvation process further exacerbating solvent decomposition. Herein, we propose a new push-pull design strategy, utilizing molecular electrostatic potential (ESP) screening to identify 2,2-difluoroethyl trifluoromethanesulfonate (DTF) as an optimal cosolvent. Importantly, DTF exhibits moderate ESP minimum (-21.0 kcal mol

Язык: Английский

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Non‐Fluorinated Cyclic Ether‐Based Electrolyte with Quasi‐Conjugate Effect for High‐Performance Lithium Metal Batteries

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

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