Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes

Abstract

There is great interest in finding and developing new, efficient and more active electrocatalytic materials. Surface modification of highly oriented pyrolytic graphite (HOPG), through the introduction of surface "blisters", is demonstrated to result in an electrode material with greatly

Electrochemical maps and movies of the hydrogen evolution reaction on natural crystals of molybdenite (MoS2): basal vs. edge plane activity

“…In this work, the electrocatalytic activity of natural crystals of MoS 2 towards the HER is mapped for the first time on the nanoscale using voltammetric SECCM. 37 , 39 , 40 Bulk MoS 2 was investigated because it possesses a well-defined surface that can be easily renewed by mechanical exfoliation. Pixel-resolved linear-sweep voltammogram (LSV) measurements allowed the HER to be visualized across the MoS 2 surface at multiple different potentials that could be played back as electrochemical flux movies.…”

Quantitative Principles for Precise Engineering of Sensitivity in Graphene Electrochemical Sensors

“…Further, using an improved SECCM, Güell et al have shown the enhanced electrochemical activity of step edges in graphene . While the literature on electron transfer is still evolving, these past studies have advanced our knowledge about the correlation between nanoscale structural properties and electron transfer in sp 2 ‐based carbon electrodes.…”

Die lokale Oberflächenstruktur und ‐zusammensetzung bestimmt die Wasserstoffentwicklung an Eisen‐Nickelsulfiden

“…[25,[29][30][31] Dabei wurde die SECCM-Spitze von Position zu Position bewegt. Begrenzt wurde die Fläche der Arbeitselektrode durch den Meniskus des Elektrolyttropfens zwischen der Spitze der doppelläufigen Nanopipette und der Oberfläche des jeweiligen Kristalls (hier die Arbeitselektrode).…”

“…Das "hoppingmode"-Protokoll diente als Grundlage fürd ie lokalen voltammetrischen Messungen (Abbildung 2B). [25,[29][30][31]…”