Real-time imaging of adatom-promoted graphene growth on nickel

Patera, Laerte L.; Bianchini, Federico; Africh, Cristina; Dri, Carlo; Soldano, Germán; Mariscal, Marcelo M.; Peressi, Maria; Comelli, Giovanni

doi:10.1126/science.aan8782

Cited by 139 publications

(117 citation statements)

References 30 publications

(31 reference statements)

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“…The EDS test (Figure h–j; Figure S2, Supporting Information) further confirmed the presence of Ni element, and the atomic percentages of C, O, and Ni were 93.91: 5.92: 0.17. More importantly, it can be seen from Figure j that more Ni elements are distributed at the edge curl of the 3D ECG, consistent with the migration of Ni in the graphene growth speculated by the synthetic method …”

Section: Resultssupporting

confidence: 78%

“…This process is demonstrated by Process ④ and Process ⑤ in Figure . As the carbon is continuously dissolved‐precipitated on the Ni particles, the graphene net continues to grow, and the newly formed graphene pushes the Ni particles forward . The migration of Ni during this process is similar to the movement of Ni particles to catalyze the growth of carbon nanotubes .…”

Section: Resultsmentioning

confidence: 99%

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Nickel‐Catalyzed Synthesis of 3D Edge‐Curled Graphene for High‐Performance Lithium‐Ion Batteries

Zhang

et al. 2019

Adv Funct Materials

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Effectively preventing graphene stacking and maintaining ultrathin layers remains a significant research effort for graphene preparation and applications. In this paper, a novel synthetic strategy based on catalyst migration on the surface of a salt template to control the growth of graphene is used to prepare 3D edge‐curled graphene (3D ECG). Under the synergistic effect of the steric hindrance and the migration of the Ni catalyst, 3D ECG forms a special structure in which the intermediate portion is flat and the edge is curled. The resultant unique structure not only effectively prevents the close stacking and aggregation of graphene, but also significantly improves its lithium storage performance. As an anode for lithium ion batteries, the reversible specific capacity can reach 907.5 and 347.8 mAh g−1 at the current density of 0.05 and 5.0 A g−1. Even after 1000 cycles, the specific capacity of 3D ECG can still be maintained at 605.2 mAh g−1 at a current density of 0.5 A g−1, demonstrating excellent rate performance and cycle performance. This new synthesis strategy and unique edge‐curled structure can be used to guide more design of 3D graphene materials for further functional applications.

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Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Nickel‐Catalyzed Synthesis of 3D Edge‐Curled Graphene for High‐Performance Lithium‐Ion Batteries

Zhang

et al. 2019

Adv Funct Materials

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“…[141] With a matched lattice (246 vs 249 pm) as well, graphene can readily grow on Ni(111) as a desired substrate via physical vapor deposition. [143] As shown in Figure 10, the catalytic action of individual Ni atoms at the edges of a growing graphene flake was directly captured by scanning tunneling microscopy with a time resolution down to milliseconds, and further rationalized by force field molecular dynamics and DFT calculations. [143] As shown in Figure 10, the catalytic action of individual Ni atoms at the edges of a growing graphene flake was directly captured by scanning tunneling microscopy with a time resolution down to milliseconds, and further rationalized by force field molecular dynamics and DFT calculations.…”

Section: Nickel Nanostructuresmentioning

confidence: 99%

“…Graphene growth along Zigzag (z) and Klein (k) edges on Ni(111). Reproduced with permission [143]. b,c) Highspeed scanning tunneling microscopy acquired in quasi-constant height mode at the z edge b) and the k edge c).…”

mentioning

confidence: 99%

Functionalized Hybridization of 2D Nanomaterials

Guan

Han

2019

Advanced Science

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The discovery of graphene and subsequent verification of its unique properties have aroused great research interest to exploit diversified graphene‐analogous 2D nanomaterials with fascinating physicochemical properties. Through either physical or chemical doping, linkage, adsorption, and hybridization with other functional species into or onto them, more novel/improved properties are readily created to extend/expand their functionalities and further achieve great performance. Here, various functionalized hybridizations by using different types of 2D nanomaterials are overviewed systematically with emphasis on their interaction formats (e.g., in‐plane or inter plane), synergistic properties, and enhanced applications. As the most intensely investigated 2D materials in the post‐graphene era, transition metal dichalcogenide nanosheets are comprehensively investigated through their element doping, physical/chemical functionalization, and nanohybridization. Meanwhile, representative hybrids with more types of nanosheets are also presented to understand their unique surface structures and address the special requirements for better applications. More excitingly, the van der Waals heterostructures of diverse 2D materials are specifically summarized to add more functionality or flexibility into 2D material systems. Finally, the current research status and faced challenges are discussed properly and several perspectives are elaborately given to accelerate the rational fabrication of varied and talented 2D hybrids.

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“…The diversity of the graphene samples and methods of the production, in turn, drives the development of new characterization techniques. For example, FAST‐STM achieves an imaging rate at the millisecond time scale, enabling real‐time observation of the catalytic activity of single metal atom and the atomic growth of graphene edge. More recently, Patera et al demonstrated a single electron alternate‐charging STM based on synchronizing the voltage pulses and the oscillation of a conductive atomic force microscope tip.…”

Section: Resultsmentioning

confidence: 99%

Scanning Probe Microscopy of Topological Structure Induced Electronic States of Graphene

Liu

Qiu

2020

Small Methods

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Graphene, as the first emerging 2D material, has attracted considerable attention because of its remarkable physical properties and potential applications in future electronic devices. Due to its planar structure and monoatomic thickness, graphene is susceptible to the presence of structural and topological defects in lattices, which can have a pronounced influence on the electrical, optical, thermal, and magnetic properties of this carbon allotrope. To unravel the structural disorders at the atomic scale, characterization techniques such as scanning tunneling microscopy (STM) and atomic force microscopy (AFM) have been widely employed. These techniques enable atomically resolved visualization of the lattice imperfection in graphene, as well as a simultaneous interrogation of the electronic states associated with the structural perturbations. This short review highlights the recent advances in the application of STM and AFM for investigating various defects in graphene, including vacancies, substitutional dopants, non‐hexagonal rings, 1D homo‐ and hetero‐boundaries, and stacking misorientation and faults at interlayers. The understanding of the intrinsic properties of structural and topological defects in graphene is essential for developing graphene‐based functional materials and related devices.

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Real-time imaging of adatom-promoted graphene growth on nickel

Cited by 139 publications

References 30 publications

Nickel‐Catalyzed Synthesis of 3D Edge‐Curled Graphene for High‐Performance Lithium‐Ion Batteries

Nickel‐Catalyzed Synthesis of 3D Edge‐Curled Graphene for High‐Performance Lithium‐Ion Batteries

Functionalized Hybridization of 2D Nanomaterials

Scanning Probe Microscopy of Topological Structure Induced Electronic States of Graphene

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