Graphene as a Long-Term Metal Oxidation Barrier: Worse Than Nothing
Graphene as a Long-Term Metal Oxidation Barrier: Worse Than Nothing
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DOI：
10.1021/nn4014356
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发表时间：
2013-07-01
期刊：
影响因子：
17.1
通讯作者：
Zettl, Alex
中科院分区：
文献类型：
--
作者：
Schriver, Maria;Regan, William;Zettl, Alex
防腐和抗氧化表面处理，如油漆或阳极氧化是几乎所有行业的基本组成部分。石墨烯是一种单原子厚度的碳片，具有令人印象深刻的气体不渗透性，似乎有望成为一种有效的防腐屏障，最近的研究也支持了这一希望。我们对Cu和Si衬底的石墨烯涂层的短期和长期性能进行了全面研究。我们的研究表明，尽管石墨烯确实提供了有效的短期氧化保护，但在长时间尺度上，它比最初裸露的、未受保护的铜表面促进了更广泛的湿腐蚀。这一惊人的结果对未来的科学研究和工业应用具有重要意义。除了为石墨烯作为保护涂层的未来工作提供信息外，本文提出的结果还对未来的科学研究和工业应用具有重要意义。除了为石墨烯作为保护涂层的任何未来工作提供信息外，本文提出的结果还对石墨烯在广泛应用中的性能具有重要意义。
Anticorrosion and antioxidation surface treatments such as paint or anodization are a foundational component in nearly all industries. Graphene, a single-atom-thick sheet of carbon with impressive impermeability to gases, seems to hold promise as an effective anticorrosion barrier, and recent work supports this hope. We perform a complete study of the short- and long-term performance of graphene coatings for Cu and Si substrates. Our work reveals that although graphene indeed offers effective short-term oxidation protection, over long time scales it promotes more extensive wet corrosion than that seen for an initially bare, unprotected Cu surface. This surprising result has important implications for future scientific studies and industrial applications. In addition to informing any future work on graphene as a protective coating, the results presented here have implications for future scientific studies and industrial applications. In addition to informing any future work on graphene as a protective coating, the results presented here have implications for graphene's performance in a wide range of applications.