Electroconvection Near Electrochemical Interfaces: Experiments, Modeling, and Computation
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Ali Mani [1] ; Karen May Wang [1]
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[1] Stanford University
Stanford University
Estados Unidos
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- Localización: Annual review of fluid mechanics, ISSN 0066-4189, Nº.52 52, 2020, págs. 509-529
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Many electrochemical and microfluidic systems involve voltage-driven transport of ions from a fluid electrolyte toward an ion-selective interface. These systems are governed by intimate coupling between fluid flow, mass transport, and electrostatic effects. When counterions are driven toward a selective interface, this coupling is shown to lead to a hydrodynamic instability called electroconvection. This phenomenon is an example of electrochemistry inducing flow, which in turn affects the transport and ohmic resistance of the bulk electrolyte. These effects have implications in a wide range of applications, including ion separation, electrodeposition, and microfluidic processes that incorporate ion-selective elements. This review surveys recent investigations of electroconvection with an emphasis on quantitative experimental and theoretical analyses and computational modeling of this phenomenon. Approaches for control and manipulation of this phenomenon in canonical settings are also discussed.
