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      Graphdiyne applied for electrochemical energy storage

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          Fantastic characteristics originate from the unique chemical and electronic structure endow GDY with a bright future for applications in electrochemical energy storage.


          Graphdiyne as a new allotrope of carbon material was constructed by benzene rings and butadiyne. The large 2D conjugated structure endows graphdiyne with excellent conductivity and flexibility. More importantly, the atomic arrangement of graphdiyne with a unique porous framework structure is very different from the compact structure of other carbon materials, such as graphene and carbon nanotubes. This is of great benefit to the diffusion and transfer of ions and gases. In the meantime, the high specific surface area originating from the pore structure can also provide abundant active sites for the storage of electrons or ions. The high charge density around the acetylenic bond in graphdiyne supplies the adsorption capacity of ions and gases as well as the catalytic ability to some degree. In addition, the mild synthetic route endows graphdiyne with function tunability and good film-forming ability. Benefiting from all these extraordinary properties, graphdiyne would have a bright future for applications in electrochemical energy storage.

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          Most cited references61

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          Architecture of graphdiyne nanoscale films

          We have demonstrated a methodology to generate large area graphdiyne films with 3.61 cm(2) on the surface of copper via a cross-coupling reaction using hexaethynylbenzene. The device based on graphdiyne films for measurement of electrical property is fabricated and shows conductivity of 2.516 x 10(-4) S m(-1) indicating a semiconductor property.
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            Graphdiyne and graphyne: from theoretical predictions to practical construction.

            Flat carbon (sp(2) and sp) networks endow the graphdiyne and graphyne families with high degrees of π-conjunction, uniformly distributed pores, and tunable electronic properties; therefore, these materials are attracting much attention from structural, theoretical, and synthetic scientists wishing to take advantage of their promising electronic, optical, and mechanical properties. In this Review, we summarize a state-of-the-art research into graphdiynes and graphynes, with a focus on the latest theoretical and experimental results. In addition to the many theoretical predictions of the potential properties of graphdiynes and graphynes, we also discuss experimental attempts to synthesize and apply graphdiynes in the areas of electronics, photovoltaics, and catalysis.
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              Electronic structure and carrier mobility in graphdiyne sheet and nanoribbons: theoretical predictions.

              Using density functional theory coupled with Boltzmann transport equation with relaxation time approximation, we investigate the electronic structure and predict the charge mobility for a new carbon allotrope, the graphdiyne for both the sheet and nanoribbons. It is shown that the graphdiyne sheet is a semiconductor with a band gap of 0.46 eV. The calculated in-plane intrinsic electron mobility can reach the order of 10(5) cm(2)/(V s) at room temperature, while the hole mobility is about an order of magnitude lower.

                Author and article information

                Dalton Transactions
                Dalton Trans.
                Royal Society of Chemistry (RSC)
                October 7 2019
                : 48
                : 39
                : 14566-14574
                [1 ]Qingdao Institute of Bioenergy and Bioprocess Technology
                [2 ]Chinese Academy of Sciences
                [3 ]Qingdao 266101
                [4 ]P.R. China
                [5 ]Center of Materials Science and Optoelectronics Engineering
                [6 ]School of Chemistry and Chemical Engineering
                [7 ]Shandong University
                [8 ]Jinan 250100
                © 2019


                Self URI (article page): http://xlink.rsc.org/?DOI=C9DT02862E


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