Department of Physics , Politecnico di Milano , p.za Leonardo da Vinci 32 , I-20133 Milano , Italy.
Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsteds Plads , 2800 Kgs , Lyngby , Denmark.
Langmuir. 2018 Mar 20;34(11):3413-3419. doi: 10.1021/acs.langmuir.8b00459. Epub 2018 Mar 7.
Systems comprising single and multilayer graphene deposited on metals and immersed in acid environments have been investigated, with the aim of elucidating the mechanisms involved, for instance, in hydrogen production or metal protection from corrosion. In this work, a relevant system, namely chemical vapor deposited (CVD) multilayer graphene/Ni (MLGr/Ni), is studied when immersed in a diluted sulfuric electrolyte. The MLGr/Ni electrochemical and morphological properties are studied in situ and interpreted in light of the highly oriented pyrolytic graphite (HOPG) electrode behavior, when immersed in the same electrolyte. Following this interpretative framework, the dominant role of the Ni substrate in hydrogen production is clarified.
已经研究了沉积在金属上的单层和多层石墨烯组成的系统，以及浸入酸环境中的系统，目的是阐明涉及的机制，例如，在制氢或金属防腐蚀方面。在这项工作中，研究了一个相关的系统，即化学气相沉积（CVD）多层石墨烯/镍（MLGr/Ni），当浸入稀释的硫酸电解质中时。研究了 MLGr/Ni 的电化学和形态特性，并根据浸入相同电解质中的高定向热解石墨（HOPG）电极的行为进行了解释。根据这种解释框架，澄清了 Ni 衬底在制氢中的主导作用。
