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More efficient process to produce graphene developed

Date:
July 23, 2015
Source:
American Associates, Ben-Gurion University of the Negev
Summary:
Researchers have developed an ultra-bright lamp-ablation method that surmounts the shortcomings and has succeeded in synthesizing few-layer (4-5) graphene in higher yields. It involves a novel optical system that reconstitutes the immense brightness within the plasma of high-power xenon discharge lamps at a remote reactor, where a transparent tube filled with simple, inexpensive graphite is irradiated.
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Ben-Gurion University of the Negev (BGU) and University of Western Australia researchers have developed a new process to develop few-layer graphene for use in energy storage and other material applications that is faster, potentially scalable and surmounts some of the current graphene production limitations.

Graphene is a thin atomic layer of graphite (used in pencils) with numerous properties that could be valuable in a variety of applications, including medicine, electronics and energy. Discovered only 11 years ago, graphene is one of the strongest materials in the world, highly conductive, flexible, and transparent. However, current methods for production currently require toxic chemicals and lengthy and cumbersome processes that result in low yield that is not scalable for commercial applications.

The new revolutionary one-step, high-yield generation process is detailed in the latest issue of Carbon, published by a collaborative team that includes BGU Prof. Jeffrey Gordon of the Alexandre Yersin Department of Solar Energy and Environmental Physics at the Jacob Blaustein Institutes for Desert Research and Prof. H.T. Chua's group at the University of Western Australia (UWA, Perth).

Their ultra-bright lamp-ablation method surmounts the shortcomings and has succeeded in synthesizing few-layer (4-5) graphene in higher yields. It involves a novel optical system (originally invented by BGU Profs. Daniel Feuermann and Jeffrey Gordon) that reconstitutes the immense brightness within the plasma of high-power xenon discharge lamps at a remote reactor, where a transparent tube filled with simple, inexpensive graphite is irradiated.

The process is relatively faster, safer and green -- devoid of any toxic substances (just graphite plus concentrated light).

Following this proof of concept, the BGU-UWA team is now planning an experimental program to scale up this initial success toward markedly improving the volume and rate at which few-layer (and eventually single-layer) graphene can be synthesized.


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Materials provided by American Associates, Ben-Gurion University of the Negev. Note: Content may be edited for style and length.


Journal Reference:

  1. Haibo Lu, Wei Sheong Woi, Xunyan Tan, Christopher T. Gibson, Xianjue Chen, Colin L. Raston, Jeffrey M. Gordon, Hui Tong Chua. Synthesis of few-layer graphene by lamp ablation. Carbon, 2015; 94: 349 DOI: 10.1016/j.carbon.2015.07.004

Cite This Page:

American Associates, Ben-Gurion University of the Negev. "More efficient process to produce graphene developed." ScienceDaily. ScienceDaily, 23 July 2015. <www.sciencedaily.com/releases/2015/07/150723134853.htm>.
American Associates, Ben-Gurion University of the Negev. (2015, July 23). More efficient process to produce graphene developed. ScienceDaily. Retrieved May 27, 2017 from www.sciencedaily.com/releases/2015/07/150723134853.htm
American Associates, Ben-Gurion University of the Negev. "More efficient process to produce graphene developed." ScienceDaily. www.sciencedaily.com/releases/2015/07/150723134853.htm (accessed May 27, 2017).

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