Experimental Voltammetry Analyzed Using Artificial Intelligence: Thermodynamics and Kinetics of the Dissociation of Acetic Acid in Aqueous Solution

Chen, Haotian; Li, Danlei; Kätelhön, Enno; Miao, Ruiyang; Compton, Richard G.

doi:10.1021/acs.analchem.2c00110

Cited by 6 publications

(1 citation statement)

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“…highlighted the power of unsupervised algorithms on the examples clustering of particle distributions, biological tissues, and atomic structures, that is still, however, poorly exploited in electrochemistry. [39,42,[46][47][48] Indeed, such automatized data treatment will provide various local descriptors for each (and all) nanoobjects imaged which can be used to reconstruct the global electrochemical response and in turns unveil the nanoscale contribution contained in an electrode response.…”

Section: Introductionmentioning

confidence: 99%

Bridging the Gap between Single Nanoparticle Imaging and Global Electrochemical Response by Correlative Microscopy Assisted By Machine Vision

et al. 2022

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The nanostructuration of an electrochemical interface dictates its micro‐ and macroscopic behavior. It is generally highly complex and often evolves under operating conditions. Electrochemistry at these nanostructurations can be imaged both operando and/or ex situ at the single nanoobject or nanoparticle (NP) level by diverse optical, electron, and local probe microscopy techniques. However, they only probe a tiny random fraction of interfaces that are by essence highly heterogeneous. Given the above background, correlative multimicroscopy strategy coupled to electrochemistry in a droplet cell provides a unique solution to gain mechanistic insights in electrocatalysis. To do so, a general machine‐vision methodology is depicted enabling the automated local identification of various physical and chemical descriptors of NPs (size, composition, activity) obtained from multiple complementary operando and ex situ microscopy imaging of the electrode. These multifarious microscopically probed descriptors for each and all individual NPs are used to reconstruct the global electrochemical response. Herein the methodology unveils the competing processes involved in the electrocatalysis of hydrogen evolution reaction at nickel based NPs, showing that Ni metal activity is comparable to that of platinum.

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