Electrochemically and Thermally Stable Inorganics–Rich Solid Electrolyte Interphase for Robust Lithium Metal Batteries

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Сен. 9, 2023

Abstract Severe dendrite growth and high‐level activity of the lithium metal anode lead to a short life span poor safety, seriously hindering practical applications batteries. With trisalt electrolyte design, an F‐/N‐containing inorganics–rich solid interphase on is constructed, which electrochemically thermally stable over long‐term cycles safety abuse conditions. As result, its Coulombic efficiency can be maintained 98.98% for 400 cycles. An 85.0% capacity retained coin‐type full cells with 3.14 mAh cm −2 LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode after 200 1.0 Ah pouch‐type 4.0 72 During thermal runaway tests cycled pouch cell, onset triggering temperatures were increased from 70.8 °C 117.4 100.6 153.1 °C, respectively, indicating greatly enhanced performance. This work gives novel insights into interface potentially paving way high‐energy‐density, long‐life‐span, safe

Язык: Английский

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Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Chemical Reviews, Год журнала: 2024, Номер 124(6), С. 3494 - 3589

Опубликована: Март 13, 2024

The renewable energy industry demands rechargeable batteries that can be manufactured at low cost using abundant resources while offering high density, good safety, wide operating temperature windows, and long lifespans. Utilizing fluorine chemistry to redesign battery configurations/components is considered a critical strategy fulfill these requirements due the natural abundance, robust bond strength, extraordinary electronegativity of free fluoride formation, which enables fluorinated components with effectiveness, nonflammability, intrinsic stability. In particular, materials electrode|electrolyte interphases have been demonstrated significantly affect reaction reversibility/kinetics, tolerance batteries. However, underlining principles governing material design mechanistic insights atomic level largely overlooked. This review covers range topics from exploration fluorine-containing electrodes, electrolyte constituents, other for metal-ion shuttle constructing fluoride-ion batteries, dual-ion new chemistries. doing so, this aims provide comprehensive understanding structure–property interactions, features interphases, cutting-edge techniques elucidating role in Further, we present current challenges promising strategies employing chemistry, aiming advance electrochemical performance, operation, safety attributes

Язык: Английский

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Gel polymer electrolytes for rechargeable batteries toward wide-temperature applications

Chemical Society Reviews, Год журнала: 2024, Номер 53(10), С. 5291 - 5337

Опубликована: Янв. 1, 2024

Design principles, engineering strategies, challenges, and opportunities of gel polymer electrolytes for rechargeable batteries toward wide-temperature applications are thoroughly reviewed.

Язык: Английский

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Oxygen-induced thermal runaway mechanisms of Ah-level solid-state lithium metal pouch cells

eTransportation, Год журнала: 2023, Номер 18, С. 100279 - 100279

Опубликована: Сен. 1, 2023

Язык: Английский

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A temperature-dependent solvating electrolyte for wide-temperature and fast-charging lithium metal batteries

Joule, Год журнала: 2024, Номер 8(1), С. 91 - 103

Опубликована: Янв. 1, 2024

High safety and stable wide-temperature operation are essential for lithium metal batteries (LMBs). Herein, we designed an amide-based eutectic electrolyte composed of N-methyl-2,2,2-trifluoroacetamide (NMTFA) difluoro(oxalato)borate, enabling LMBs’ wide-operating temperature range fast-charging performance. In addition to high thermal tolerance non-flammability, our (AEEs-5) triggers a temperature-dependent Li solvation structure due the motion polar NMTFA, ensuring appropriate Li-ion de-solvation kinetics at 25°C–100°C. Moreover, AEEs-5-induced solid interphase (SEI) with inorganic contents stability greatly reduces parasitic reactions LMBs. As result, AEEs-5-based LiFePO4||Li cells deliver not only good 2 C-rate cycling 25°C but also better capacity retention (82.79%) after 1,000 cycles (20 C-rate) 100°C, operating these LMBs can exceed 150°C. This work provides deep understanding chemistry, taking into consideration.

Язык: Английский

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In situ polymerization of 1,3-dioxolane and formation of fluorine/boron-rich interfaces enabled by film-forming additives for long-life lithium metal batteries

Chemical Science, Год журнала: 2024, Номер 15(30), С. 12108 - 12117

Опубликована: Янв. 1, 2024

This work proposes a film-forming Lewis acid additive to promote the in situ polymerization of 1,3-dioxane and formation fluorine/boron rich interface, which enhance cycling stability lithium metal batteries.

Язык: Английский

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High Energy Density Solid‐State Lithium Metal Batteries Enabled by In Situ Polymerized Integrated Ultrathin Solid Electrolyte/Cathode

Advanced Functional Materials, Год журнала: 2024, Номер 34(18)

Опубликована: Янв. 20, 2024

Abstract Solid‐state batteries (SSBs) are regarded as the most promising next‐generation energy storage devices due to their potential achieve higher safety performance and density. However, troubles in preparation of ultrathin solid‐state electrolytes (SEs) well resultant compromise mechanical strength greatly limit application SSBs. Herein, a novel situ polymerized integrated SE/cathode design is developed. The ceramic layer supported on cathode serves not only rigid scaffold prevent direct contact between anode but also active inorganic fillers enhance properties SE film. unique Li‐ion coordination environments Li hopping mechanism profoundly promote fast ion transport composite SEs. SEs simultaneously balance thickness (10 µm), (0.65 mS cm −1 ), superior Young's modulus (66.8 GPa), excellent interface contact. pouch cells with practical Li||LiNi 0.8 Co 0.1 Mn O 2 configuration an ultrahigh volumetric density 1018 Wh L performance. exhibits great promise for SSBs high

Язык: Английский

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Electrolytes Design for Extending the Temperature Adaptability of Lithium‐Ion Batteries: from Fundamentals to Strategies

Advanced Materials, Год журнала: 2024, Номер 36(21)

Опубликована: Фев. 13, 2024

Abstract With the continuously growing demand for wide‐range applications, lithium‐ion batteries (LIBs) are increasingly required to work under conditions that deviate from room temperature (RT). However, commercial electrolytes exhibit low thermal stability at high temperatures (HT) and poor dynamic properties (LT), hindering operation of LIBs extreme conditions. The bottleneck restricting practical applications has promoted researchers pay more attention developing a series innovative electrolytes. This review primarily covers design adaptability perspective. First, fundamentals concerning temperature, including donor number (DN), dielectric constant, viscosity, conductivity, ionic transport, theoretical calculations elaborated. Second, prototypical examples, such as lithium salts, solvent structures, additives, interfacial layers in both liquid solid electrolytes, presented explain how these factors can affect electrochemical behavior or temperatures. Meanwhile, principles limitations electrolyte discussed corresponding Finally, summary outlook regarding extend proposed.

Язык: Английский

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Hybridizing carbonate and ether at molecular scales for high-energy and high-safety lithium metal batteries

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Апрель 15, 2024

Abstract Commonly-used ether and carbonate electrolytes show distinct advantages in active lithium-metal anode high-voltage cathode, respectively. While these complementary characteristics hold promise for energy-dense lithium metal batteries, such synergy cannot be realized solely through physical blending. Herein, a linear functionalized solvent, bis(2-methoxyethyl) (BMC), is conceived by intramolecularly hybridizing ethers carbonates. The integration of the electron-donating group with electron-withdrawing can rationalizes charge distribution, imparting BMC notable oxidative/reductive stability relatively weak solvation ability. Furthermore, also offers including ability to slightly dissolve LiNO 3 , excellent thermostability nonflammability. Consequently, optimized BMC-based electrolyte, even typical concentrations single demonstrates tolerance (4.4 V) impressive Li plating/stripping Coulombic efficiency (99.4%). Moreover, it fulfills practical batteries satisfactory cycling performance exceptional towards thermal/mechanical abuse, showcasing its suitability safe high-energy batteries.

Язык: Английский

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Core–Shell Structured Flame‐Retardant Separator Mediated with Metal–Organic Framework Armor Enables Self‐Acceleration Mechanism for Dendrite‐Free and Safer Lithium Metal Batteries

Advanced Functional Materials, Год журнала: 2024, Номер 34(21)

Опубликована: Янв. 18, 2024

Abstract Developing an optimal multifunctional flame‐retardant separator is crucial for enhancing lithium metal battery (LMB) safety. However, this task poses challenges due to the inferior electrochemical stability and limited ion transport of most fire retardant‐based coatings. In work, core–shell structured matrix elaborated by in situ growing a thin layer MOF armor onto ammonium polyphosphate (APP) bulk materials further manufacture (APP@ZIF‐8@PP). The acts as both protector regulator, effectively safeguarding APP from side reactions optimizing efficiency, selectivity, deposition behavior flux. Notably, such demonstrates self‐acceleration mechanism, i.e., ZIF‐8 can promote decomposition each other mutually, activating effect at lower temperatures. Additionally, APP@ZIF‐8 aids forming dense char during pyrolysis, which insulate against transfer oxygen heat. Finally, LMBs assembled with exhibit heightened safety optimized performance. This work provides valuable insights into development advanced porous materials‐based separators, contributing safer more reliable energy storage devices.

Язык: Английский

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