A comparative DFT study on the adsorption properties of lithium batteries thermal runaway gases CO, CO2, CH4 and C2H4 on pristine and Au doped CdS monolayer

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 46, P. 104200 - 104200

Published: March 1, 2024

Language: Английский

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Engineered Two-Dimensional Transition Metal Dichalcogenides for Energy Conversion and Storage

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(16), P. 9376 - 9456

Published: July 23, 2024

Designing efficient and cost-effective materials is pivotal to solving the key scientific technological challenges at interface of energy, environment, sustainability for achieving NetZero. Two-dimensional transition metal dichalcogenides (2D TMDs) represent a unique class that have catered myriad energy conversion storage (ECS) applications. Their uniqueness arises from their ultra-thin nature, high fractions atoms residing on surfaces, rich chemical compositions featuring diverse metals chalcogens, remarkable tunability across multiple length scales. Specifically, electronic/electrical, optical, thermal properties 2D TMDs been widely exploited electrochemical (e.g., electrocatalytic water splitting), anodes in alkali ion batteries supercapacitors), photocatalysis, photovoltaic devices, thermoelectric Furthermore, performances can be greatly boosted by judicious structural tuning through phase, size, composition, defect, dopant, topological, heterostructure engineering. The challenge, however, design control such engineering levers, optimally specifically, maximize performance outcomes targeted In this review we discuss, highlight, provide insights significant advancements ongoing research directions approaches improving potential ECS

Language: Английский

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Nanomaterials for Flexible Neuromorphics

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(22), P. 12738 - 12843

Published: Nov. 5, 2024

The quest to imbue machines with intelligence akin that of humans, through the development adaptable neuromorphic devices and creation artificial neural systems, has long stood as a pivotal goal in both scientific inquiry industrial advancement. Recent advancements flexible electronics primarily rely on nanomaterials polymers owing their inherent uniformity, superior mechanical electrical capabilities, versatile functionalities. However, this field is still its nascent stage, necessitating continuous efforts materials innovation device/system design. Therefore, it imperative conduct an extensive comprehensive analysis summarize current progress. This review highlights applications neuromorphics, involving inorganic (zero-/one-/two-dimensional, heterostructure), carbon-based such carbon nanotubes (CNTs) graphene, polymers. Additionally, comparison summary structural compositions, design strategies, key performance, significant these are provided. Furthermore, challenges future directions pertaining materials/devices/systems associated neuromorphics also addressed. aim shed light rapidly growing attract experts from diverse disciplines (e.g., electronics, science, neurobiology), foster further for accelerated development.

Language: Английский

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Scaling up Simultaneous Exfoliation and 2H to 1T Phase Transformation of MoS₂

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 18, 2024

Abstract Large‐scale production of high‐quality ultrathin layers (1–3 nm) molybdenum disulfide (MoS 2 ) with absolute (≈100%) 1T‐phase is still in its infancy. Therefore, it extremely crucial to have a technique for the mass 1T‐MoS layers. Here, direct, single‐step, and ultra‐fast that produces rate as high 58 g h −1 without usage any intercalates or solvents demonstrated. The exfoliated exhibited ≈100% large specific surface area (67 m ), higher electrical conductivity (140 S thermal stability (up 500 °C) hydrophilicity (water contact angle (WCA): ≈23.4⁰). showed capacitance 420 F ; perhaps an ideal candidate electrodes supercapacitors. Moreover, layer better mechanical flexibility retained original performance on bending between 0 180⁰ angles. Further, assess adeptness protocol, An initial trial done other transition metal dichalcogenides (TMDs) i.e., tungsten (WS observe similar results. work sheds light simultaneous exfoliation phase transformation TMDs quantities, detailed proofs‐of‐concept demonstrate application next‐generation energy storage devices.

Language: Английский

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Two-Dimensional Materials for Brain-Inspired Computing Hardware

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Recent breakthroughs in brain-inspired computing promise to address a wide range of problems from security healthcare. However, the current strategy implementing artificial intelligence algorithms using conventional silicon hardware is leading unsustainable energy consumption. Neuromorphic based on electronic devices mimicking biological systems emerging as low-energy alternative, although further progress requires materials that can mimic function while maintaining scalability and speed. As result their diverse unique properties, atomically thin two-dimensional (2D) are promising building blocks for next-generation electronics including nonvolatile memory, in-memory neuromorphic computing, flexible edge-computing systems. Furthermore, 2D achieve biorealistic synaptic neuronal responses extend beyond logic memory Here, we provide comprehensive review growth, fabrication, integration van der Waals heterojunctions optoelectronic devices, circuits, For each case, relationship between physical properties device emphasized followed by critical comparison technologies different applications. We conclude with forward-looking perspective key remaining challenges opportunities applications leverage fundamental heterojunctions.

Language: Английский

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Emerging Issues and Opportunities of 2D Layered Transition Metal Dichalcogenide Architectures for Supercapacitors

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Two-dimensional layered transition metal dichalcogenides (2D TMDs) have emerged as promising candidates for supercapacitor (SCs) owing to their tunable electronic properties, structures, and effective ion intercalation capabilities. Despite these advantages, challenges such low electrical conductivity, the interlayer restacking, oxidation structural collapse hinder practical implementation. This review provides a comprehensive overview of recent advances in development 2D TMDs SCs. We begin by outlining charge storage mechanisms design principles SCs, followed an in-depth discussion synthesis methods associated fabricating TMD architectures. The subsequent sections explore crystal structures reaction mechanisms, illustrating electrochemical potential Furthermore, we highlight material modification strategies, including nanostructuring, defect engineering, phase control, surface/interface modulation, which been proposed overcome existing challenges. Finally, address critical issues emerging opportunities inspire SC technologies.

Language: Английский

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Fluorine‐Free MXenes: Recent Advances, Synthesis Strategies, and Mechanisms

Small, Journal Year: 2023, Volume and Issue: 20(16)

Published: Dec. 6, 2023

Abstract MXenes, an exceptional class of 2D materials, possess high conductivity, adaptable surface chemistry, mechanical strength, and tunable bandgaps, making them attractive for diverse applications. Unlocking the potential MXenes requires precise control over synthesis methods functionality. Conventionally, fluorine‐based etchants are used in synthesis, posing both environmental concerns alterations to properties, along with introduction certain defects. This prompts exploration innovative fluorine‐free strategies synthesis. review focuses on environmentally friendly, techniques MXene emphasizing mechanisms recent breakthroughs alternative etching strategies. The comprehensive coverage includes electrochemical etching, Lewis acid‐driven molten salt alkaline/hydrothermal techniques, chemical vapor deposition (CVD), methods. Fluorine‐free yields terminations such as ─O, ─OH, ─Cl, etc., influencing chemistry improving their properties. presence ─OH groups NaOH etched boosts energy storage, while ─Cl functionality from acidic salts optimizes performance. mitigate adverse effects ─F electronic properties broadening In addition traditional approaches, this delves into novel tailoring It comprehensively addresses challenges, opportunities, future perspectives MXenes.

Language: Английский

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Coexisting Phases in Transition Metal Dichalcogenides: Overview, Synthesis, Applications, and Prospects

ACS Nano, Journal Year: 2024, Volume and Issue: 18(4), P. 2708 - 2729

Published: Jan. 22, 2024

Over the past decade, significant advancements have been made in phase engineering of two-dimensional transition metal dichalcogenides (TMDCs), thereby allowing controlled synthesis various phases TMDCs and facile conversion between them. Recently, there has emerging interest TMDC coexisting phases, which contain multiple within one nanostructured TMDC. By taking advantage merits from component offer enhanced performance many aspects compared with single-phase TMDCs. Herein, this review article thoroughly expounds latest progress ongoing efforts on syntheses, properties, applications phases. The introduction section overviews main (2H, 3R, 1T, 1T′, 1Td), along advantages coexistence. subsequent focuses methods for TMDCs, particular attention to local patterning random formations. Furthermore, basis versatile properties their magnetism, valleytronics, field-effect transistors, memristors, catalysis are discussed. Lastly, a perspective is presented future development, challenges, potential opportunities This aims provide insights into 2D materials both scientific communities contribute further field.

Language: Английский

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Phase-Engineered MoSe₂/CeO₂ Composites for Room-Temperature Gas Sensing with a Drastic Discrimination of NH₃ and TEA Gases

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(8), P. 3994 - 4006

Published: July 23, 2024

Detecting and distinguishing between hazardous gases with similar odors by using conventional sensor technology for safeguarding human health ensuring food safety are significant challenges. Bulky, costly, power-hungry devices, such as that used gas chromatography-mass spectrometry (GC-MS), widely employed sensing. Using a single chemiresistive semiconductor or electric nose (e-nose) to achieve this objective is difficult, mainly because of its selectivity issue. Thus, there need develop new materials tunable versatile sensing characteristics. Phase engineering two-dimensional better utilize their physiochemical properties has attracted considerable attention. Here, we show MoSe

Language: Английский

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Spatially Confined Microcells: A Path toward TMD Catalyst Design

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(11), P. 6952 - 7006

Published: May 15, 2024

With the ability to maximize exposure of nearly all active sites reactions, two-dimensional transition metal dichalcogenide (TMD) has become a fascinating new class materials for electrocatalysis. Recently, electrochemical microcells have been developed, and their unique spatial-confined capability enables understanding catalytic behaviors at single material level, significantly promoting this field. This Review provides an overview recent progress in microcell-based TMD electrocatalyst studies. We first introduced structural characteristics discussed site engineering strategies Later, we comprehensively described two distinct types microcells: window-confined on-chip microcell (OCEM) droplet-confined scanning cell microscopy (SECCM). Their setups, working principles, instrumentation were elucidated detail, respectively. Furthermore, summarized advances OCEM SECCM obtained catalysts, such as identification imaging, monitoring, modulation charge injection transport, electrostatic field gating. Finally, current challenges provided personal perspectives on research.

Language: Английский

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