Inorganic Filler Enhanced Formation of Stable Inorganic‐Rich Solid Electrolyte Interphase for High Performance Lithium Metal Batteries

Advanced Functional Materials, Год журнала: 2023, Номер 33(29)

Опубликована: Апрель 2, 2023

Abstract Lithium metal (LM) is a promising anode material for next generation lithium ion based electrochemical energy storage devices. Critical issues of unstable solid electrolyte interphases (SEIs) and dendrite growth however still impede its practical applications. Herein, composite gel polymer (GPE), formed through in situ polymerization pentaerythritol tetraacrylate with fumed silica fillers, developed to achieve high performance batteries (LMBs). As evidenced theoretically experimentally, the presence SiO 2 not only accelerates Li + transport but also regulates solvation sheath structures, thus facilitating fast kinetics formation stable LiF‐rich interphase achieving uniform depositions suppress growth. The GPE‐based Li||Cu half‐cells Li||Li symmetrical cells display Coulombic efficiency (CE) 90.3% after 450 cycles maintain stability over 960 h at 3 mA cm −2 mAh , respectively. In addition, Li||LiFePO 4 full‐cells LM limited supply capacity retention 68.5% 700 0.5 C (1 = 170 g −1 ). Especially, when further applied anode‐free LMBs, carbon cloth||LiFePO full‐cell exhibits excellent cycling an average CE 99.94% 160th cycle C.

Язык: Английский

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Morphology evolution of CoNi‐LDHs synergistically engineered by precipitant and variable cobalt for asymmetric supercapacitor with superior cycling stability

EcoEnergy, Год журнала: 2023, Номер 1(2), С. 448 - 459

Опубликована: Дек. 1, 2023

Abstract Cobalt–nickel layered double hydroxides (CoNi‐LDHs) have been extensively synthesized through precipitation methods for their application in supercapacitors (SC). However, the influence of precipitant quantity on both morphology evolution and SC performance has an underexplored area. This study systematically examines morphological changes CoNi‐LDHs by varying alkaline evaluates asymmetric SC. The findings reveal a progressive transformation with increase content, starting from nanorod (Co 1 Ni 2 (OH) ‐1HMA), progressing to nanorod/nansosheet composite ‐4HMA), ultimately evolving into nanosheet ‐8HMA). is attributed synergetic effect variable cobalt, which provides multiple valences induces evolution. resulting LDHs demonstrate different performances: (1) Co ‐1HMA exhibits maximum capacitance 1764 F/g, while ‐4HMA ‐8HMA show values 1460 F/g 1676 respectively; (2) rate capabilities showcase percentages 60.5% ‐1HMA, 83.1% ‐4HMA, 66.3% ‐8HMA; (3) energy densities are recorded at 72.1 Wh/kg 41.3 62.8 Co1Ni ‐8HMA. Particularly, superlong cycling stability, retaining approximately 99% after 25000 consecutive charge/discharge cycles 7.0 A/g. result underscores its significant potential efficient storage applications.

Язык: Английский

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Ultra-high rate capability of in-situ anchoring FeF3 cathode onto double-enhanced conductive Fe/graphitic carbon for high energy density lithium-ion batteries

Nano Energy, Год журнала: 2023, Номер 108, С. 108181 - 108181

Опубликована: Янв. 7, 2023

Язык: Английский

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Co3O4@Mn-Ni(OH)2 core–shell heterostructure for hybrid supercapacitor electrode with high utilization

Chemical Engineering Journal, Год журнала: 2023, Номер 469, С. 143984 - 143984

Опубликована: Июнь 9, 2023

Язык: Английский

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Lithiophilic CoF2@C hollow spheres towards spatial lithium deposition for stable lithium metal batteries

Journal of Energy Chemistry, Год журнала: 2024, Номер 97, С. 55 - 67

Опубликована: Июнь 5, 2024

Язык: Английский

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Advanced electrode processing for lithium-ion battery manufacturing

Опубликована: Фев. 3, 2025

Язык: Английский

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Facile and Tunable Synthesis of Nitrogen-Doped Graphene with Different Microstructures for High-Performance Supercapacitors

ACS Materials Letters, Год журнала: 2023, Номер 5(4), С. 944 - 954

Опубликована: Март 1, 2023

Heteroatom-doped graphene is of great interest for energy storage applications due to its improved local electronic structures compared with undoped graphene. However, a tunable method the preparation heteroatom-doped special microstructure still worth developing. Herein, novel nitrogen-doped different microstructures facilely synthesized via an in situ interlamination self-assembling that employs formed Fe3(PO4)2 and organoamine as catalyst carbon source, respectively. By tuning alkyl chain length organoamine, octylamine dodecylamine, bubble-like sheet-like are obtained, In three-electrode supercapacitor tests, besides double-layer capacitance, as-prepared electrode material indeed exhibits pseudocapacitance N-rich feature, delivering good rate capability (166 F g–1 at 20 A g–1) cyclic performance (96% capacitance retention over 20,000 cycles g–1). More importantly, symmetrical studies reveal promising practicality achieved excellent power densities together long-term cyclability. Thereby, this work establishes new milestone facile synthesis desired other applications.

Язык: Английский

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Insights into the Chemistry of the Cathodic Electrolyte Interphase for PTFE-Based Dry-Processed Cathodes

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(34), С. 40488 - 40495

Опубликована: Авг. 18, 2023

Dry processing is a promising method for high-performance and low-cost lithium-ion battery manufacturing which uses polytetrafluoroethylene (PTFE) as binder. However, the electrochemical stability of PTFE binder in cathodes generated chemistry cathode electrolyte interphase (CEI) layers are rarely reported. Herein, CEI properties studied via cycling high-loading dry-processed electrodes electrolytes with LiPF6 or LiClO4 salt. Using salt can eliminate other possible F sources, allowing decomposition to be studied. The detection LiF cells confirms that undergoes side reaction(s) cathodes. When compared LiClO4, layer much thicker when used These results provide insights into may potentially enlighten development binders high efficiency long durability DP-based LIBs.

Язык: Английский

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In-situ constructing hetero-structured Mo2C-Mo2N embedded in carbon nanosheet as an efficient separator modifier for high-performance lithium-sulfur batteries

Chemical Engineering Journal, Год журнала: 2023, Номер 475, С. 146133 - 146133

Опубликована: Сен. 19, 2023

Язык: Английский

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Strategies and Challenge of Thick Electrodes for Energy Storage: A Review

Batteries, Год журнала: 2023, Номер 9(3), С. 151 - 151

Опубликована: Фев. 27, 2023

In past years, lithium-ion batteries (LIBs) can be found in every aspect of life, and batteries, as energy storage systems (ESSs), need to offer electric vehicles (EVs) more competition accepted markets for automobiles. Thick electrode design reduce the use non-active materials improve density cost batteries. However, thick electrodes are limited by their weak mechanical stability poor electrochemical performance; these limitations could classified critical cracking thickness (CCT) penetration depth (LPD). The understanding CCT LPD have been proposed recent works on breaking improving listed this article. By comprising attempts, some not higher mass loading or accessible areal capacity that would defeat purpose.

Язык: Английский

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