Commonly, product analysis following electrocatalysis requires sampling the gaseous headspace or the bulk electrolyte of a reaction cell. However, bulk product analysis methods report averaged results, typically for a large catalyst area. This results in a loss of information related to heterogeneity in activity, information that is possibly of great importance for nanoparticle-based catalysts. To address this limitation, our group is developing methods that utilize nanoscale probes for studying electrochemical reaction products generated at an electrocatalyst surface on a microelectrode array. In this poster our most recent efforts to incorporate local chemical measurements at catalytic surfaces with scanned pipettes, specifically through scanning ion conductance microscopy, are described.

Electrochemical reactions at microelectrode arrays

256th National Meeting (2018)

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