Synthesis, properties and potential applications of hydrogenated graphene

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2020-10, Vol.397, p.125408, Article 125408
• Main Authors: Fei, Yuhuan, Fang, Siyuan, Hu, Yun Hang
• Format: Article
• Language: English
• Subjects: Band-gap engineering; Birch reduction; Graphane; Hydrogenated graphene; Plasma hydrogenation
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2020.125408

•This article provides a comprehensive overview on hydrogenated graphene (HG).•Structures, properties, and applications of HG are discussed.•Synthesis methods are evaluated with emphasis on hydrogenation degree of HG.•Challenges and future research directions for HG are outlined. Graphene-based materials have attracted considerable attentions due to their unique properties. However, the negligible and uncontrollable band gap of graphene greatly limits its further applications. Hydrogenation is a facile and well-studied chemical modification technique to widen the band gap of graphene with a high tunability. Herein, we reveal the structure, properties, and forming mechanism of hydrogenated graphene, summarize recent advances in its synthesis and engineering in terms of plasma hydrogenation, thermal cracking, Birch reduction, and electrochemical reduction, and discuss its potential applications in hydrogen storage, electronics, biomedicines, etc. In the last part, we further outline the challenges and future research directions for highly efficient graphene hydrogenation.