论文标题
由阳极电化学去角质产生的石墨烯的拉曼指纹
Raman Fingerprints of Graphene Produced by Anodic Electrochemical Exfoliation
论文作者
论文摘要
电化学去角质是石墨烯可扩展产生的最有希望的方法之一。但是，对其拉曼频谱以及缺乏石墨烯的测量标准的理解有限，严重限制了其工业应用。在这项工作中，我们展示了一项对电化学剥落石墨烯的拉曼光谱的系统研究，该石墨烯是使用不同的电解质和不同类型的溶剂产生的。我们证明，由于这种类型的石墨烯有缺陷，因此无法从2D峰的形状中提取有关厚度的信息。此外，缺陷的数量和样品的均匀性在很大程度上取决于实验条件，包括后处理。在特定条件下，已经观察到了短导电转基聚乙烯链的形成。我们的拉曼分析为社区提供了有关如何通过使拉曼光谱成为强大的计量工具来获取来自电解质，温度和其他实验条件的缺陷信息的信息的指导。
Electrochemical exfoliation is one of the most promising methods for scalable production of graphene. However, limited understanding of its Raman spectrum as well as lack of measurement standards for graphene strongly limit its industrial applications. In this work we show a systematic study of the Raman spectrum of electrochemically exfoliated graphene, produced using different electrolytes and different types of solvents in varying amounts. We demonstrate that no information on the thickness can be extracted from the shape of the 2D peak as this type of graphene is defective. Furthermore, the number of defects and the uniformity of the samples strongly depend on the experimental conditions, including post-processing. Under specific conditions, formation of short conductive trans-polyacetylene chains has been observed. Our Raman analysis provides guidance for the community on how to get information on defects coming from electrolyte, temperature and other experimental conditions, by making Raman spectroscopy a powerful metrology tool.
