Defect engineering of two-dimensional materials for advanced energy conversion and storage

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(5), P. 1723 - 1772

Published: Jan. 1, 2023

Defective two-dimensional (2D) materials show huge potential for energy-related fields. This review overviews the formation/evolution mechanisms and engineering strategies of defects in 2D materials, which enable enhanced electrode reaction kinetics.

Language: Английский

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Regulation of Outer Solvation Shell Toward Superior Low‐Temperature Aqueous Zinc‐Ion Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(49)

Published: Sept. 30, 2022

Abstract Aqueous Zn‐ion batteries are well regarded among a next‐generation energy‐storage technology due to their low cost and high safety. However, the unstable stripping/plating process leading severe dendrite growth under current density temperature impede practical application. Herein, it is demonstrated that addition of 2‐propanol can regulate outer solvation shell structure Zn 2+ by replacing water molecules establish “eutectic shell”, which provides strong affinity with (101) crystalline plane fast desolvation kinetics during plating process, rendering homogeneous deposition without formation. As result, anode exhibits promising cycle stability over 500 h an elevated 15 mA cm −2 depth discharge 51.2%. Furthermore, remarkable electrochemical performance achieved in 150 mAh Zn|V 2 O 5 pouch cell 1000 cycles at −20 °C. This work not only offers new strategy achieve excellent aqueous harsh conditions, but also reveals electrolyte designs be applied related energy storage conversion fields.

Language: Английский

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Layer-Structured Anisotropic Metal Chalcogenides: Recent Advances in Synthesis, Modulation, and Applications

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(7), P. 3329 - 3442

Published: Jan. 31, 2023

The unique electronic and catalytic properties emerging from low symmetry anisotropic (1D 2D) metal chalcogenides (MCs) have generated tremendous interest for use in next generation electronics, optoelectronics, electrochemical energy storage devices, chemical sensing devices. Despite many proof-of-concept demonstrations so far, the full potential of has yet to be investigated. This article provides a comprehensive overview recent progress made synthesis, mechanistic understanding, property modulation strategies, applications chalcogenides. It begins with an introduction basic crystal structures, then physical 1D 2D MCs. Controlled synthetic routes MC crystals are summarized example advances solution-phase vapor-phase exfoliation. Several important approaches modulate dimensions, phases, compositions, defects, heterostructures MCs discussed. Recent significant highlighted optoelectronic catalysts, batteries, supercapacitors, platforms, thermoelectric ends prospects future opportunities challenges addressed academic research practical engineering

Language: Английский

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Tailoring Vertically Aligned Inorganic‐Polymer Nanocomposites with Abundant Lewis Acid Sites for Ultra‐Stable Solid‐State Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(13)

Published: Feb. 24, 2023

Abstract Nanocomposite solid polymer electrolytes are considered as a promising strategy for solid‐state lithium metal batteries (SSLMBs). However, the randomly dispersed fillers in matrix with limited Li + transference number and insufficient ionic conductivity severely sacrifice ion transport capacity, thus restricting their practical application. To tackle these issues, magnetic field‐assisted alignment is proposed to disperse vertically aligned akaganéite nanotube an inorganic‐polymer nanocomposite electrolyte ultra‐stable SSLMBs. The cations Lewis acid sites can grab anions promote dissociation of salts while sufficient oxygen hydroxyl functional group offer abundant Li‐ion migration favored transportation. At same time, akaganéite/polymer interface combined above synergistic effects establish oriented channels inside electrolyte, which significantly elevates its conductivity. Specially, organic‐inorganic dual‐layer solid‐electrolyte formed uniform deposition suppress dendrite growth. beneficial effect network also demonstrated full cell pouch where remarkable 2000 cycles capacity decay 0.012% per cycle be achieved.

Language: Английский

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In-Situ Formed Phosphorus Modified Gel Polymer Electrolyte with Good Flame Retardancy and Cycling Stability for Rechargeable Lithium Batteries

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(11), P. 4498 - 4508

Published: March 7, 2023

The gel polymer electrolyte (GPE) is a promising substitution for traditional liquid electrolytes. However, GPE still troubled mainly by its sluggish ionic conductivity and inferior interfacial compatibility with electrodes. Herein, phosphorus-modified was fabricated in situ incorporation of black phosphorus (BP) nanosheets into poly(methyl methacrylate) (PMMA) matrix during the self-polymerization monomers. developed exhibited high (1.083 mS·cm–1 at 30 °C), an enhanced Li+ transference number (0.43), wide electrochemical stability window (5.2 V vs Li+/Li), while good thermal improved flame retardancy can also be achieved. Differential scanning calorimeter measurements confirmed that crystallinity PMMA not changed as BP were incorporated. Further investigation proved contained segments effectively immobilized anions to decrease coordination around Li+. As result, ion transport through facilitated, which promoted uniform stripping/plating lithium cycling symmetry cell. Based on GPE, Li|LiFePO4 Li|LiNi0.5Co0.2Mn0.3O2 batteries graphite|LiFePO4 soft-package battery encouraging performances safety properties.

Language: Английский

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Liquid Metal Loaded Molecular Sieve: Specialized Lithium Dendrite Blocking Filler for Polymeric Solid‐State Electrolyte

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 20, 2024

Abstract All‐solid–state lithium metal batteries (LMBs) are currently one of the best candidates for realizing yearning high‐energy–density with high safety. However, even polyethylene oxide (PEO), most popular polymeric solid‐state electrolyte (SSE) largest ionic conductivity in category so far, has significant challenges due to safety issues dendrites, and insufficient conductivity. Herein, molecular sieve (MS) is integrated into PEO as an inert filler liquid (LM) a functional module, forming “LM‐MS‐PEO” composite both SSE enhanced conductivity, protection layer against dendrites. As demonstrated by theoretical experimental investigations, LM released from MS can be uniformly efficiently distributed PEO, which could avoid agglomeration, enable effective blocking regulate mass transport Li ions, thus achieving deposition during charge/discharge. Moreover, reduce crystallinity improve lithium‐ion operating temperature. Benefiting introduction MS/LM, LM‐MS‐PEO exhibits fourfold higher than pristine at 40 °C, while as‐assembled all‐solid–state LMBs have four five times longer stable cycle life.

Language: Английский

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Juice Vesicles Bioreactors Technology for Constructing Advanced Carbon‐Based Energy Storage

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: Feb. 20, 2024

The construction of high-quality carbon-based energy materials through biotechnology has always been an eager goal the scientific community. Herein, juice vesicles bioreactors (JVBs) bio-technology based on hesperidium (e.g., pomelo, waxberry, oranges) is first reported for preparation composites with controllable components, adjustable morphologies, and sizes. JVBs serve as miniature reaction vessels that enable sophisticated confined chemical reactions to take place, ultimately resulting in formations complex carbon composites. newly developed approach highly versatile can be compatible a wide range including metals, alloys, metal compounds. growth self-assembly mechanisms via are explained. For illustration, NiCo alloy nanoparticles successfully situ implanted into pomelo crosslinked (PCC) by JVBs, their applications sulfur/carbon cathodes lithium-sulfur batteries explored. well-designed PCC/NiCo-S electrode exhibits superior high-rate properties enhanced long-term stability. Synergistic reinforcement transportation ions/electrons interface catalytic conversion lithium polysulfides arising from architecture proposed aid DFT calculations. research provides novel biosynthetic route rational design fabrication advanced storage.

Language: Английский

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Molecular precursors for the electrodeposition of 2D-layered metal chalcogenides

Nature Reviews Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Language: Английский

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“Tree‐Trunk” Design for Flexible Quasi‐Solid‐State Electrolytes with Hierarchical Ion‐Channels Enabling Ultralong‐Life Lithium‐Metal Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(44)

Published: July 28, 2022

The construction of robust (quasi)-solid-state electrolyte (SSE) for flexible lithium-metal batteries is desirable but extremely challenging. Herein, a novel, flexible, and quasi-solid-state (QSSE) with "tree-trunk" design reported ultralong-life (LMBs). An in-situ-grown metal-organic framework (MOF) layer covers the cellulose-based to form hierarchical ion-channels, enabling rapid ionic transfer kinetics excellent durability. A conductivity 1.36 × 10-3 S cm-1 , transference number 0.72, an electrochemical window 5.26 V, good rate performance are achieved. LMBs fabricated as-designed QSSEs deliver areal capacity up 3.1 mAh cm-2 at initial cycle high mass loading 14.8 mg in Li-NCM811 cells can retain ≈80% retention after 300 cycles. 3000 cycles (6000 h) also achieved Li-LiFePO4 cells. This work presents promising route constructing QSSE toward LMBs, provides rationale material structure development area energy storage conversion.

Language: Английский

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Creating Edge Sites within the 2D Metal‐Organic Framework Boosts Redox Kinetics in Lithium–Sulfur Batteries

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(42)

Published: Sept. 18, 2022

Abstract Lithium–sulfur batteries have received extensive interest owing to their exceptionally high energy density. Nonetheless, practical implementation is still impeded by the shuttle effect of polysulfides and sluggish conversion kinetics. Considering that, a porous 2D defective zeolitic imidazolate framework‐7 (ZIF‐7) with abundant active edges rationally designed as multifunctional sulfur carriers for Li–S batteries. The ZIF‐7 enables uniform distribution rapid Li‐ion diffusion, while rich facilitate sufficient exposure sites capturing catalyzing polysulfides. In addition, nitrogen defects on edge can further accelerate transformation decrease barrier Li 2 S decomposition. Consequently, demonstrate surprisingly prospects stable capacity 676.9 mAh g −1 over 500 cycles at 1 C (capacity retention rate = 72.3%). When assembled into pouch cell 2.3 mg cm −2 , it exhibits 901.1 after 100 0.1 C. This work offers rational structural design strategy tackle challenges cathode.

Language: Английский

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