In-Situ XAS Investigation of the Effect of Electrochemical Reaction on the Structure of Graphene in Aqueous Electrolytes

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Title:	In-Situ XAS Investigation of the Effect of Electrochemical Reaction on the Structure of Graphene in Aqueous Electrolytes
Authors:	Juan J. Velasco-Velez;Chuang, Cheng-Hao;Han, Hui-Ling;Inigo, Martin-Fernandez;Camille Martinez;Pong, Way-Faung;Shen, Yuen-Ron;Wang, Feng;Zhang, Yue-gang;Guo, Jing-hua;Miquel Salmeron
Contributors:	淡江大學物理學系
Date:	2013-07-01
Issue Date:	2014-03-19 17:02:32 (UTC+8)
Publisher:	Electrochemical Society, Inc.
Abstract:	In-situ X-ray Absorption Spectroscopy (XAS), Raman Spectroscopy, AFM and XPS have been used to investigate the effect of reactions occurring in aqueous electrolytes on the structure of a single-layer graphene produced by CVD. It was found that defects are readily and irreversibly produced by application of electrode voltages. The defects and the products were identified also by new features in the XAS spectra. Our findings show the poor stability of the CVD graphene, which could be a challenge in applications such as super-capacitors, fuel-cells, batteries and photo-catalysis.
Relation:	Journal of The Electrochemical Society 160(9), p.445-450
DOI:	10.1149/2.113309jes
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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