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Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry.

ABSTRACT: Faradaic reactions at low supporting electrolyte concentrations induce convection via electroosmotic flows. Here we combine finite-element simulations and electrochemical measurements on microparticles at ultramicroelectrodes to explore this effect. We show that convection becomes the dominant form of mass transport for experiments at low salt concentrations, violating the common assumption that convection can be neglected.

SUBMITTER: Moazzenzade T

PROVIDER: S-EPMC7582615 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry.

Moazzenzade Taghi T Yang Xiaojun X Walterbos Luc L Huskens Jurriaan J Renault Christophe C Lemay Serge G SG

Journal of the American Chemical Society 20201012 42

Faradaic reactions at low supporting electrolyte concentrations induce convection via electroosmotic flows. Here we combine finite-element simulations and electrochemical measurements on microparticles at ultramicroelectrodes to explore this effect. We show that convection becomes the dominant form of mass transport for experiments at low salt concentrations, violating the common assumption that convection can be neglected. ...[more]

PMID: 33044066

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