等离子体辅助石墨电化学剥离制备的少层石墨烯结构薄膜的电导率

IF 2.3 Q3 ELECTROCHEMISTRY International journal of electrochemistry Pub Date : 2019-04-28 DOI:10.1155/2019/6478708
V. Vasiliev, R. Manzhos, A. Krivenko
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引用次数: 4

摘要

研究了等离子体辅助石墨在Na2SO4溶液中电化学剥离得到的少层石墨烯结构(FLGS)的电流电压特性。FLGS被证明具有电子导电性,这表明在获得的纳米结构中,石墨烯平面边缘的主要功能化和基面结构的保存与石墨源一样。研究了湿度对FLGS薄膜电导率的影响。由于水膜对FLGS薄片的屏蔽作用,薄膜的电阻随着环境相对湿度的增加而增加。分析了不同溶剂对FLGS电流-电压特性的影响。极性质子溶剂蒸气中膜的电导率显著降低,而非极性非质子溶剂蒸气对FLGS膜的电导率影响较小。
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Electrical Conductivity of Films Formed by Few-Layer Graphene Structures Obtained by Plasma-Assisted Electrochemical Exfoliation of Graphite
Current-voltage characteristics of few-layer graphene structures (FLGS) obtained by plasma-assisted electrochemical exfoliation of graphite in Na2SO4 solution were measured. FLGS are shown to possess electronic conductivity, which indicates the predominant functionalization of the edges of graphene planes and the preservation of the structure of basal planes in obtained nanostructures as in the source graphite. The effect of humidity on the conductivity of FLGS films was studied. The resistance of films was found to increase with an increase in the relative humidity of the environment due to the shielding of FLGS flakes by a film of water. The effect of different solvents on the current-voltage characteristics of FLGS was analyzed. The conductivity of films significantly decreased in vapors of polar protic solvents, while there was a minor effect of nonpolar aprotic solvents on the conductivity of FLGS films.
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