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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Graphene-ionic liquid based hybrid nanomaterials as novel lubricant for low friction and wear.
Varsha Khare,Minh-Quan Pham,Nitee Kumari,Hae-Sung Yoon,Chung-Soo Kim,Jae Il Park,Sung-Hoon Ahn +6 more
TL;DR: The present contribution outlines the wear and tribological properties (friction and lubrication) of a highly viscous IL [BMIM][I] and its comparison with its nanohybrid material counterpart.
Journal ArticleDOI
3D nanostructured inkjet printed graphene via UV-pulsed laser irradiation enables paper-based electronics and electrochemical devices
Suprem R. Das,Suprem R. Das,Qiong Nian,Allison A. Cargill,John A. Hondred,Shaowei Ding,Mojib Saei,Gary J. Cheng,Jonathan C. Claussen,Jonathan C. Claussen +9 more
TL;DR: A pulsed laser process is introduced that can selectively irradiate inkjet printed reduced graphene oxide (RGO) and subsequently improve the electrical conductivity of printed graphene above previously published reports, and enables the creation of low-cost and disposable graphene-based electrochemical electrodes for myriad applications including sensors, biosensors, fuel cells, and theranostic devices.
Journal ArticleDOI
Graphene Produced by Radiation-Induced Reduction of Graphene Oxide
TL;DR: In this article, the effect of irradiation on graphene oxide by sunlight, UV light and KrF excimer laser has been investigated in detail, and it appears that laser irradiation appears to be an efficient procedure for large-scale synthesis of graphene.
Journal ArticleDOI
Pristine or Highly Defective? Understanding the Role of Graphene Structure for Stable Lithium Metal Plating
Wei Liu,Yuting Xia,Wenwu Wang,Yizhe Wang,Jialun Jin,Yungui Chen,Eunsu Paek,David Mitlin,David Mitlin +8 more
Journal ArticleDOI
Pyridinic and graphitic nitrogen-rich graphene for high-performance supercapacitors and metal-free bifunctional electrocatalysts for ORR and OER
Shaikh Nayeem Faisal,Enamul Haque,Nikan Noorbehesht,Weimin Zhang,Andrew T. Harris,Tamara L. Church,Andrew I. Minett +6 more
TL;DR: In this article, a facile synthesis method to produce nitrogen-doped graphene containing a high atomic percentage of pyridinic N and graphitic N via the thermal annealing of graphene oxide and uric acid is reported.
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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