1. In-Situ XAS Investigation of the Effect of Electrochemical Reactions on the Structure of Graphene in Aqueous Electrolytes
- Author
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Iñigo Martin-Fernandez, Juan J. Velasco-Velez, Jinghua Guo, Feng Wang, Camille Martinez, Y. R. Shen, Cheng-Hao Chuang, Hui-Ling Han, Way-Faung Pong, Miquel Salmeron, and Yuegang Zhang
- Subjects
X-ray absorption spectroscopy ,Materials science ,Absorption spectroscopy ,Renewable Energy, Sustainability and the Environment ,Graphene ,Inorganic chemistry ,Condensed Matter Physics ,Electrochemistry ,Spectral line ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,law.invention ,symbols.namesake ,X-ray photoelectron spectroscopy ,law ,Electrode ,Materials Chemistry ,symbols ,Raman spectroscopy - 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
- Published
- 2013
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