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1. Introduction The one-atom thick graphitic, sp2-bonded carbon material: the graphene which is a two-dimensional hexagonal honeycomb like structure; has attracted significant attention. This material possesses various novel properties of interest such as intrinsically superior electrical conductivity (106 Ω-1 cm-1), nearly transparent in visible light (97.7%) [1], high intrinsic carrier mobility (2.5×105 cm2 V-1s-1) [2], high specific surface area (2630 m2g-1) [3], excellent mechanical strength (Young’s modulus > 1 TPa) [4], and high thermal conductivity (above 3000 W mK-1) [5]. These properties make graphene as one of the most promising upcoming material which has potential possibility of applications in electronics, photonics and several other fields [6]. In the field of organic electronics, the biggest challenge is to develop an electrode which should be highly conducting, flexible and transparent besides being very robust [7]. Presently, indium tin oxide (ITO) is most widely used for this purpose but it has its own shortcomings such as brittle nature, sensitivity to acidic and basic environments, high surface roughness, and growing cost due to shortage of indium. Many other materials have been tried earlier but without much success [8-12]. Recent studies suggest that in comparison to ITO, graphene is a better material for making transparent and highly conducting electrode [13-15]. Synthesis of graphene has been investigated through various routes such as micromechanical cleavage [16]. This is time consuming and the yield is poor. Electrochemical synthesis is considered as cheaper and greener method potentially capable of mass production of few-layer graphene (FLG). Using electrochemical exfoliation method Liu et al. peeled FLG off graphite at anode in ionic liquids [17]. This solution based method makes graphene amenable to be processed into the form of film, on most substrates including flexible type.PDF Image | Synthesis Graphene Electrochemical Exfoliation of Graphite
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