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Asymmetric Interdigitated Electrodes for Amperometric Detection of Soluble Products
Journal article   Open access

Asymmetric Interdigitated Electrodes for Amperometric Detection of Soluble Products

Sophia E. Lee and Maureen H. Tang
Journal of the Electrochemical Society, v 168(5), p57519
01 May 2021
url
https://doi.org/10.1149/1945-7111/ac001cView
Published, Version of Record (VoR)CC BY-NC-ND V4.0 Open

Abstract

Electrochemistry Materials Science Materials Science, Coatings & Films Physical Sciences Science & Technology Technology
A new electroanalytical design based on asymmetric interdigitated arrays (IDA) is presented and the effects of asymmetry on the device performance are characterized electrochemically. Varying the collector and generator band widths independently of each other tunes the collection efficiency and redox cycling-induced feedback. These arrays are able to provide low feedback (<10%) while maintaining moderate collection efficiency (25%-40%). Behavior is evaluated experimentally and using a numerical model. The application of the device to detect soluble electrolyte degradation products in nonaqueous lithium-ion and sodium-ion battery electrolytes is demonstrated.

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Web of Science research areas
Electrochemistry
Materials Science, Coatings & Films
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