Localized electrochemistry for the investigation and the modification of 2D materials. (September 2017)

• Record Type: Journal Article
• Authors: Jaouen, K.; Henrotte, O.; Campidelli, S.; Jousselme, B.; Derycke, V.; Cornut, R.
• Is Part Of: Applied materials today. Volume 8(2017)
• Page Start: 116
• Page End: 124
• Publication Date: 2017-09
• Subjects: Materials science -- Periodicals; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1016/j.apmt.2017.05.001
• Languages: English
• ISSNs: 2352-9407

Abstract

Graphical abstract: Highlights: Local electrochemistry offers unique and diversified possibilities to understand and functionalize 2D materials. Presently, the majority of the works deal with Carbon based materials, but an increasing number of studies deals with other systems such as transition metal dichalcogenides. Most of the studies involve local probe electrochemical techniques such as Scanning Electrochemical Microscopy (SECM) or derived technique. Abstract: In this review, we present the state-of-the-art interplay between two emerging fields, namely localized electrochemistry and 2D materials. Electrochemistry involves oxidations and reductions taking place at an electrode immersed in a solution. When the substrate is composed of 2D materials or layered materials, electrochemistry can be used to investigate or modify these layers. It is thus an essential link between 2D materials and their applications, in particular those related to sustainable energy conversion and storage. In addition, the properties of 2D materials often differ along their edges, at defect sites or upon folding and stacking. Most interesting properties (such as catalytic activity, conductivity, and chemical reactivity) drastically depend on such inhomogeneity or imperfections, which can be purposely induced (by functionalization or nanostructuration) or not (intrinsic defects resulting from the material synthesis or consequences of the material handling and deposition processes). These key aspects are suitably investigated using local electrochemical strategies, which allow both the analysis and the local modification of 2D materials. This article reviews the most significant results of this rapidly growing field.