High-corrosion-resistance mechanism of graphitized platelet-type carbon nanofibers in the OER in a concentrated alkaline electrolyte

Abstract

Carbon materials are used as electrocatalyst supports and conductive additives in various electrodes for electrochemical energy conversion and storage because of their high electrical conductivity and chemical stability. However, they...

Correlation between microstructure and surface chemistry of carbon nanofibers grown using different adhesive layers

“…2) show the sidewalls of the TiNi-CNFs comprise mostly of basal graphene planes, whereas in case of CrNi-CNFs, the edge planes of graphene sheets point outwards. Edge planes are considered to be more reactive than basal planes [34][35][36]. Thus, we can reasonably assume that CrNi-CNFs will form specific attachments with a few functional groups that are energetically most favorable.…”

Effect of Potential-Step Cycling on Corrosion Behavior and Mechanism of Carbon Paper Used in the Gas Diffusion Layer

“…Han and co-worker 48 reported that selective introduction of C-O-C functional groups on the edge of graphitic carbon can effectively improve the stability of the material in terms of electro-oxidation corrosion in acidic systems. On the other hand, Sato 49 et al found that pCNFs surfaces passivated with hydroxyl groups exhibited high resistance to carbon corrosion at high anodic potentials in concentrated alkaline electrolytes. Therefore, the C-O species produced on the surface of carbon papers during electro-oxidation corrosion can inhibit the carbon papers from being further corroded.…”

Engineering Durable Anion Exchange Membrane Water Electrolyzers through Suppressed Electrochemical Corrosion of a NiFe–Graphitic Carbon Shell Anode Catalyst

“…In particular, the deterioration of the carbon support has been identified as a major factor contributing to instability in catalyst systems. − This degradation can result in catalyst detachment from the support and interface degradation. Various characterization techniques, including electrochemical mass spectrometry ,, and Raman spectroscopy, , have provided evidence supporting these observations. These findings highlight the significance of addressing the stability of the carbon support to ensure the enduring durability and performance of catalyst systems.…”