Graphdiyne Electrochemistry: Progress and Perspectives

Chen, Xinyue; Jiang, Xin; Yang, Nianjun

doi:10.1002/smll.202201135

Cited by 43 publications

(28 citation statements)

References 224 publications

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“…Graphdiyne (GDY) is a kind of two-dimensional (2D) carbon material with sp- and sp 2 -hybridized carbon atoms. It has been reported that GDY is a semiconductor material with a natural band gap of 0.44–1.47 eV while possessing a high carrier mobility of 10 4 to 10 5 cm 2 ·V –1 ·s –1 at room temperature. − At the same time, its unique chemical structure, that is, diacetylenic linkages (−CC–CC−), well-distributed pores, and large π-conjugated system, endows GDY extensive application prospects in many fields such as catalysis, , energy storage and conversion, , photoelectrical device, and biomedicine. − …”

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confidence: 99%

“…It has been reported that GDY is a semiconductor material with a natural band gap of 0.44− 1.47 eV while possessing a high carrier mobility of 10 4 to 10 5 cm 2 •V −1 •s −1 at room temperature. 1−3 At the same time, its unique chemical structure, that is, diacetylenic linkages (−C� C−C�C−), well-distributed pores, and large π-conjugated system, endows GDY extensive application prospects in many fields such as catalysis, 4,5 energy storage and conversion, 6,7 photoelectrical device, 8 and biomedicine. 9−12 Since the successful preparation of GDY in 2010, 13 great efforts have been devoted into the controlled synthesis of GDY.…”

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confidence: 99%

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Rapid Synthesis of Graphdiyne Films on Hydrogel at the Superspreading Interface for Antibacteria

Kong

Wang

et al. 2022

ACS Nano

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Graphdiyne (GDY), a two-dimensional (2D) carbon material with diacetylenic linkages (−CC–CC−) structures, has attracted enormous attention in various fields. However, the controlled synthesis of GDY films is still challenging because of the low alkyne coupling efficiency and out-of-plane growth. Here, we employed a highly efficient Cu(II)-N,N,N′,N′-tetramethylethylenediamine (Cu(II)-TMEDA) catalyst and constructed a superspreading liquid/liquid interface on a hydrogel for rapid and controllable synthesis of GDY thin films. GDY films with controllable thickness from 4 to 50 nm and large-scale uniform morphology can be prepared within 2 h at room temperature. The mechanism of growth was revealed to be a nucleation and in-plane extension process. Meanwhile, the as-grown GDY films showed excellent photothermal conversion efficiency, which induces the release of Cu(II) ions from the hydrogel and exhibits high efficiency in synergistic antibacteria.

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confidence: 99%

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confidence: 99%

Rapid Synthesis of Graphdiyne Films on Hydrogel at the Superspreading Interface for Antibacteria

Kong

Wang

et al. 2022

ACS Nano

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“…They have exceeded the deficits of graphene due to different kinds of hybridization and versatile morphological configurations. [1][2][3] Depending upon structural symmetry, the derivatives of graphene are divided mainly into two categories, namely hexagonal and non-hexagonal allotropes. Earlier, it was believed that perfect hexagonal symmetry was necessary for the presence of Dirac cones in band structure.…”

Section: Introductionmentioning

confidence: 99%

Optical and Thermoelectric Behavior of Phagraphene with Site‐Specific B‐N Co‐Doping

Ghosh

Ghosal

Jana

2022

Advcd Theory and Sims

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Phagraphene is a theoretically predicted sp 2 hybridized, se-mimetallic allotrope of graphene. The semimetallic nature of phagraphene is robust against external strain and B-N co-doping. Being experimentally realized in a nanoribbon form, this is quite fascinating in the present scenario. In this theoretical study, optical and thermoelectric properties of phagraphene and its site-dependent B-N co-doped analogous configurations are critically investigated employing density functional theory. As a consequence of inherent rectangular symmetry and direction-dependent behavior of the structures, anisotropic optical responses are obtained. The strain-induced optical responses further confirm these observations. Different positions of the optical peaks for distinct configurations lead to an elegant way of structural identifications. The absorption spectra of the structures reveal that low-energy optical transitions take place due to p z orbitals. Besides, static dielectric constant and refractive index are enhanced for the co-doped structures. Furthermore, the thermoelectric responses of the structures are explored by adapting the semi-classical Boltzmann transport equation. Importantly, a significantly higher figure of merit has been perceived, which is quite uncommon among graphene allotropes.

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“…As an emerging 2D carbon nanomaterial consisting of layers of sp and sp 2 hybridized carbon atoms, graphdiyne (GDY) is drawing increasing interest because of its attractive properties and broad-range promising applications. − In particular, rich conjugated acetylenic bonds and numerous uniform in-plane cavities endow GDY with fascinating chemical/electrochemical properties and potential applications in electrochemical energy storage. − It has been reported that GDY is more lithiophilic than other sp 2 hybridized carbon materials due to the rich sp-hybridization carbons, which is beneficial for the nucleation process of Li plating. , Particularly, the 18C-hexagon with sp-hybridization carbons has a lower adsorption energy for Li atoms compared with the 6C-hexagon in the sp 2 -hybridization carbon materials . Furthermore, GDY with intrinsic nanopores can act as a stable nanosieve to improve the Li + migration and optimize its deposition. , Consequently, GDY has been considered as a promising lithiophilic material to stabilize lithium metal anodes.…”

Section: Introductionmentioning

confidence: 99%

Columnar Lithium Deposition Guided by Graphdiyne Nanowalls toward a Stable Lithium Metal Anode

Zhu

Yin

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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Lithium metal is the most promising anode for lithium batteries, but the growth of lithium dendrites leads to rapid attenuation of battery capacity and a series of safety problems during the plating/stripping process. Utilization of carbon materials for improving the Li metal anode stability represents a feasible strategy; particularly, the high affinity for lithium endows graphdiyne (GDY) with a promising capability for stabilizing Li metal anodes. Herein, vertically aligned GDY nanowalls (NWs) were uniformly grown on a copper foil, which allowed for dendrite-free, columnar deposition of lithium, desired for a stable Li metal anode. The highly lithiophilic GDY NWs afforded plentiful and evenly distributed active sites for Li nucleation as well as uniform distribution of Li-ion flux for Li growth, resulting in smooth, columnar Li deposition. The resultant Li metal electrode based on the Cu-GDY NWs was able to cycle stably for 500 cycles at 1 mA cm–2 and 2 mA h cm–2 with a high Coulombic efficiency of 99.2% maintained. A symmetric battery assembled by lithium-loaded Cu-GDY NWs (Cu-GDY NWs@Li) showed a long lifespan over 1000 h at 1 mA cm–2 and 1 mA h cm–2. Furthermore, a full cell assembled by Cu-GDY NWs@Li and LiFePO4 was able to cycle stably for 200 cycles at a high current of 5 C, indicating the potential applications in practical Li metal batteries at high rates. This work demonstrated great potential of GDY-based materials toward applications in Li metal batteries of high safety and high energy density.

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Graphdiyne Electrochemistry: Progress and Perspectives

Cited by 43 publications

References 224 publications

Rapid Synthesis of Graphdiyne Films on Hydrogel at the Superspreading Interface for Antibacteria

Rapid Synthesis of Graphdiyne Films on Hydrogel at the Superspreading Interface for Antibacteria

Optical and Thermoelectric Behavior of Phagraphene with Site‐Specific B‐N Co‐Doping

Columnar Lithium Deposition Guided by Graphdiyne Nanowalls toward a Stable Lithium Metal Anode

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