Title

Establishing the Kinetics for the Electrolytic Oxidation of Cobalt Hydroxide

Faculty Sponsor

Robert Palumbo

College

Engineering

Department/Program

Mechanical Engineering

Document Type

Poster Presentation

Symposium Date

Spring 5-4-2017

Abstract

We are developing a finite-difference model to describe the kinetics for the electrochemical oxidation of cobalt hydroxide in a water splitting process. Evidence from exploratory studies suggests a reaction pathway involving diffusion and adsorption to form the desired products, cobalt oxyhydroxide and cobalt (II, III) oxide. Coupling diffusion and surface processes at the anode allows the model to determine the parameters that define the kinetics of the electrochemical system. The model is consistent with experimental evidence: a fit is possible only when the model includes electron transfer with the dissolved and adsorbed electroactive species. Due to the highly non-linear equations defining the mechanism, the parameters of the fit are highly dependent on the initial input for related values. To ensure a high level of confidence in the kinetic parameters, model outputs will be compared between concomitant experimental techniques and with values reported in literature.

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