Vertically Aligned Graphene Nanosheet Arrays : Synthesis, Properties and Applications in Electrochemical Energy Conversion and Storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number1700678
Journal / PublicationAdvanced Energy Materials
Volume7
Issue number23
Early online date3 Jul 2017
Publication statusPublished - 6 Dec 2017

Abstract

In the pursuit of better electrode kinetics and mass transportation for electrochemical energy applications, 3D graphene-based electrodes have been receiving increasing research interest. Distinguished from other kinds of 3D graphene structures, the well-developed, vertically aligned graphene nanosheet arrays (VAGNAs) could be grown on a variety of substrates by plasma-enhanced chemical vapor deposition (PECVD), forming a 3D intercon-nected structure with intimate contact with substrates and largely exposed edges, and easily accessible open surfaces of the graphene nanosheets. Ascribing to the combined superior inherent properties of graphene and the special structure configuration, e.g., large surface area, excellent electron transfer capability, outstanding mechanical strength, great chemical and thermal stabilities, and enhanced electrochemical activity, VAGNAs have demonstrated promising applications in supercapacitors, batteries, and fuel cell catalysts. This progress report provides a brief review on the nuclea-tion and growth of VAGNAs, their growth mechanism and properties, and highlights the recent important progress in their electrochemical energy conversion and storage applications, in the views of their pros and cons in comparison with other 3D graphene-based structures. Challenges and per-spectives for future advance are discussed in the end.

Research Area(s)

  • fuel cells, lithium-ion batteries, nanosheet arrays, plasma enhanced chemical vapor deposition, supercapacitors, vertically aligned graphene, vanadium redox flow batteries