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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High-throughput and high-performance lithium-ion batteries via dry processing

Chemical Engineering Journal, Год журнала: 2023, Номер 471, С. 144300 - 144300

Опубликована: Июль 3, 2023

Язык: Английский

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Tailoring the Wadsley–Roth crystallographic shear structures for high-power lithium-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(18), С. 6571 - 6581

Опубликована: Янв. 1, 2024

A tailored Wadsley–Roth crystallographic shear structure containing inspiring domains with tetrahedron, tetrahedron-free and large-size blocks in the lattice of novel titanium niobium tungsten oxide for high-power lithium-ion batteries.

Язык: Английский

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Advanced electrode processing for lithium-ion battery manufacturing

Опубликована: Фев. 3, 2025

Язык: Английский

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Novel Ni–Ge–P anodes for lithium-ion batteries with enhanced reversibility and reduced redox potential

Inorganic Chemistry Frontiers, Год журнала: 2022, Номер 10(2), С. 699 - 711

Опубликована: Дек. 3, 2022

Ge substitution for P tunes the structures of Ni–P anodes with enhanced reversibility and reduced redox potential.

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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Designing strategies of advanced electrode materials for high-rate rechargeable batteries

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(9), С. 4428 - 4457

Опубликована: Янв. 1, 2023

Fast-charging design strategies including surface coating, regulating morphology, creating defects, functionalizing groups modification, chemical intercalating and element doping are overviewed to provide guidance toward high-rate materials.

Язык: Английский

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Crystallographic Insight of Reduced Lattice Volume Expansion in Mesoporous Cu²⁺‐Doped TiNb₂O₇ Microspheres during Li⁺ Insertion

Advanced Functional Materials, Год журнала: 2023, Номер 33(15)

Опубликована: Янв. 25, 2023

Abstract TiNb 2 O 7 represents a promising anode material for lithium‐ion batteries (LIBs), but its practical applications are currently hampered by the non‐negligible volumetric expansion and contraction during charge/discharge process sluggish ion/electron kinetics. A combination technique is reported systematically optimizing porous spherical morphology, crystal structure, surface decoration of mesoporous Cu 2+ ‐doped microspheres to enhance electrochemical Li + storage performance stability simultaneously. The dopants preferentially replace Ti 4+ in lattices, which decreases diffusion barrier increases electronic conductivity, as confirmed density functional theory (DFT) calculation demonstrated diverse characterizations. successful doping significantly reduces lattice coefficient from 7.26% 4.61% after insertion along b ‐axis , visualized situ ex XRD analysis. optimal 5% with coating N‐doped carbon exhibits enhanced specific capacity rate cyclic performances both half‐ full‐cell configurations, demonstrating an excellent behavior fast‐charging LIB applications.

Язык: Английский

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Internal and External Cultivation Design of Zero‐Strain Columbite‐Structured MNb₂O₆ toward Lithium‐Ion Capacitors as Competitive Anodes

Advanced Energy Materials, Год журнала: 2023, Номер 13(38)

Опубликована: Авг. 17, 2023

Abstract Modest rate behaviors and structural collapse of battery‐type anodes limit the commercial application lithium‐ion capacitors (LICs). For this, rational design advanced with both stability high ionic/electronic conductivities becomes essential to LICs. Herein, a general avenue is developed construct series single‐crystal nano‐blocks assembled as “zero‐strain” columbite‐structured MNb 2 O 6 (M = Cd, Co, Zn, Mn, Mg, Ca) accordion frameworks toward The intrinsic Li + (de)insertion involves solid‐solution charge storage mechanism volumetric change <0.59% over (de)lithiation established systematical in(ex) situ analysis. exhibits M‐dependent electron/ion transport capabilities, along highest electronic diffusion rates smallest volume (0.32%) for CdNb . Thanks its robust structure superb originating from “internal (i.e., optimization) external design) cultivation” design, shows optimum electrochemical capacity 102.8 mAh g −1 at 10 A retention 80.3% after 20 000 cycles 5 ‐based LICs display high‐rate energy density long‐duration stability. More importantly, devised strategy provides meaningful guidance next‐generation

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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