Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides

Liu, Xiao Chen; Zhao, Shuyang; Sun, Xueping; Deng, Liangzi; Zou, Xiaolong; Hu, Yunzi; Wang, Yunxiao; Chu, C. W.; Li, Jia; Wu, Jingjie; Ke, Fu Sheng; Ajayan, Pulickel M.

doi:10.1126/sciadv.aay4092

Cited by 81 publications

(77 citation statements)

References 46 publications

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“…A good illustration of this is in the solid-state intercalation of 2H-NbS 2 by copper atoms. 40 As shown in Figure 3A, as the Cu intercalation state (x) increases, the intensity of (002) peak for 2H-NbS 2 first decreases and then disappears when x rises to higher than 0.65, to be replaced by two new reflections at lower angles. The first new reflection peak is a broad peak originating from the intermediate phase with a highorder intercalation stage under the low intercalation state.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 87%

“…70 Ayajan reported a new solid-state reaction to synthesize homogeneous Cu-intercalated TMD compounds with a high intercalant concentration at room temperature and atmospheric pressure. 40 Essentially, the method involved mixing Cu powders with TMD powders in a stoichiometric manner in a stirred solution. Intercalant concentration as high as x = 1.2 could be achieved by this intercalation method.…”

Section: Solid Phase Diffusionmentioning

confidence: 99%

“…The intercalation method worked well with group IV and V layered TMDs (MX 2 , M = Ti, V, Ta, and Nb, X = S and Se), but not with group VI TMDs (M = Mo or W). 40…”

Section: Solid Phase Diffusionmentioning

confidence: 99%

“…Reproduced with permission from Ref. 40 Copyright 2020, American Association for the Advancement of Science. (B) XRD patterns comparing pristine bulk BP and monolayer phosphorene molecular superlattice (MPMS).…”

Section: Electronic Properties Of Intercalated Tmdsmentioning

confidence: 99%

“…32 In 1986, the first monolayer MoS 2 suspension was reported through intercalation with lithium followed by reaction with water. 33 Intercalation modifies the properties of TMD by a myriad of effects, including charge doping, [34][35][36] expansion of c axis lattice constants, [37][38][39][40] orbital hybridization, [41][42][43] and phonon scattering. 37,44,45 A wide range of properties could be promoted or tuned, from electrical conductivity, 46,47 optical modes, 48,49 magnetic order, 43,50 thermoelectricity, 45,51 catalytic activities, 52,53 to energy storage and conversion performances.…”

Section: Introductionmentioning

confidence: 99%

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Intercalated phases of transition metal dichalcogenides

Wang

et al. 2020

SmartMat

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Two‐dimensional transition metal dichalcogenides (TMDs) play host to a wide range of novel topological states, such as quantum spin Hall insulators, superconductors, and Weyl semimetals. The rich polymorphism in TMDs suggests that phase engineering can be used to switch between different charge order states. Intercalation of atoms or molecules into the van der Waals gap of TMDs has emerged as a powerful approach to modify the properties of the material, leading to phase transition or the formation of substoichiometric phases via compositional tuning, thus broadening the electronic and optical landscape of these materials for a wide range of applications. Here, we review the current efforts in the preparation of intercalated TMD. The challenges and opportunities for intercalated TMDs to create a new device paradigm for material science are discussed.

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 87%

Section: Solid Phase Diffusionmentioning

confidence: 99%

“…The intercalation method worked well with group IV and V layered TMDs (MX 2 , M = Ti, V, Ta, and Nb, X = S and Se), but not with group VI TMDs (M = Mo or W). 40…”

Section: Solid Phase Diffusionmentioning

confidence: 99%

Section: Electronic Properties Of Intercalated Tmdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Intercalated phases of transition metal dichalcogenides

Wang

et al. 2020

SmartMat

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Regulating Intercalation of Layered Compounds for Electrochemical Energy Storage and Electrocatalysis

Yang

Tamirat

Bin

et al. 2021

Adv Funct Materials

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Layered materials have received extensive attention for widespread applications such as energy storage and conversion, catalysis, and ion transport owing to their fast ion diffusion, exfoliative feature, superior mechanical flexibility, tunable bandgap structure, etc. The presence of large interlayer space between each layer enhances intercalation of the guest ion or molecule, which is beneficial for fast ion diffusion and charge transport along the channels. This intercalation reaction of layered compounds with guest species results in material with improved mechanical and electronic properties for efficient energy storage and conversion, catalysis, ion transport, and other applications. This review extensively discusses the intercalation of guest ionic or molecular species into layered materials used for various types of applications. It assesses the intercalation strategies, mechanism of ionic or molecular intercalation reactions, and highlights recent advancements. The electrochemical performances of several typical intercalated materials in batteries, supercapacitors, and electrocatalytic systems have been thoroughly discussed. Moreover, the challenges in the design and intercalation of layered materials, as well as prospects of future development are highlighted.

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Probing Functional Structures, Defects, and Interfaces of 2D Transition Metal Dichalcogenides by Electron Microscopy

Luo,

Gao,

Wang

et al. 2023

Adv Funct Materials

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Abstract2D transition metal dichalcogenides (TMDs) exhibit remarkable properties that are strongly influenced by their atomic structures, as well as by various types of defects and interfaces that can be precisely engineered and controlled. These features make 2D TMDs and TMD‐based materials highly promising for a wide range of applications in electronics, optoelectronics, magnetism, spintronics, catalysis, energy, etc. By providing a comprehensive approach to understand the structure–property–functionality relationship in materials at the atomic scale, electron microscopy, and spectroscopy techniques have emerged as invaluable tools for studying both the static characteristics and dynamic evolutions of 2D TMDs. In this review, the primary focus lies in exploring intrinsic and artificial structures in TMDs and their heterostructures, along with their corresponding properties, through cutting‐edge aberration‐corrected scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS). Additionally, recent advancements in the field of in situ visualization and manipulation of 2D TMDs using electron beams are highlighted. It is anticipated that the up‐to‐date overview provided, along with a glimpse into the future development of STEM‐based techniques, will make a substantial contribution to advancing research on 2D materials.

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Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides

Cited by 81 publications

References 46 publications

Intercalated phases of transition metal dichalcogenides

Intercalated phases of transition metal dichalcogenides

Regulating Intercalation of Layered Compounds for Electrochemical Energy Storage and Electrocatalysis

Probing Functional Structures, Defects, and Interfaces of 2D Transition Metal Dichalcogenides by Electron Microscopy

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