High-yield production of graphene by liquid-phase exfoliation of graphite
Yenny Hernandez,Valeria Nicolosi,Mustafa Lotya,Fiona M. Blighe,Zhenyu Sun,Sukanta De,I.T. McGovern,Brendan Holland,Michele T. Byrne,Yurii K. Gun'ko,John J. Boland,Peter Niraj,Georg S. Duesberg,Satheesh Krishnamurthy,Robbie Goodhue,John L. Hutchison,Vittorio Scardaci,Andrea C. Ferrari,Jonathan N. Coleman +18 more
TLDR
Graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone are demonstrated.Abstract:
Fully exploiting the properties of graphene will require a method for the mass production of this remarkable material. Two main routes are possible: large-scale growth or large-scale exfoliation. Here, we demonstrate graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone. This is possible because the energy required to exfoliate graphene is balanced by the solvent-graphene interaction for solvents whose surface energies match that of graphene. We confirm the presence of individual graphene sheets by Raman spectroscopy, transmission electron microscopy and electron diffraction. Our method results in a monolayer yield of approximately 1 wt%, which could potentially be improved to 7-12 wt% with further processing. The absence of defects or oxides is confirmed by X-ray photoelectron, infrared and Raman spectroscopies. We are able to produce semi-transparent conducting films and conducting composites. Solution processing of graphene opens up a range of potential large-area applications, from device and sensor fabrication to liquid-phase chemistry.read more
Citations
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Structural design of graphene for use in electrochemical energy storage devices
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Recent advances in free-standing two-dimensional crystals with atomic thickness: design, assembly and transfer strategies
Xiaodong Zhang,Yi Xie +1 more
TL;DR: This review mainly focuses on recent advances in synthetic strategies for atomically thick 2D crystals with a nonlayering structure as well as the quasi-layered structure with relatively strong bonds between the layers.
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Characterization of MoS2–Graphene Composites for High-Performance Coin Cell Supercapacitors
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An iron-based green approach to 1-h production of single-layer graphene oxide
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Bi- and trilayer graphene solutions.
Chih-Jen Shih,Aravind Vijayaraghavan,Aravind Vijayaraghavan,Rajasekar Krishnan,Richa Sharma,Jae-Hee Han,Moon-Ho Ham,Zhong Jin,Shangchao Lin,Geraldine L.C. Paulus,Nigel F. Reuel,Qing Hua Wang,Daniel Blankschtein,Michael S. Strano +13 more
TL;DR: A solution-phase technique for the production of large-area, bilayer or trilayer graphene from graphite, with controlled stacking, to allow high-throughput production, functionalization, and the transfer of samples to arbitrary substrates.
References
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Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
Journal ArticleDOI
Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
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