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.

中文翻译：

---

硫化电解质中CVD石墨烯/ Ni界面的演变

已经研究了包含沉积在金属上并浸入酸性环境中的单层和多层石墨烯的系统，目的是阐明所涉及的机制，例如，制氢或金属防腐蚀。在这项工作中，研究了一种相关的系统，即化学气相沉积（CVD）多层石墨烯/ Ni（MLGr / Ni），将其浸入稀硫酸电解液中。对MLGr / Ni的电化学和形态学特性进行了原位研究，并根据高度取向的热解石墨（HOPG）电极在浸入相同电解质时的行为进行了解释。遵循该解释性框架，阐明了镍底物在制氢中的主导作用。