Abstract
This work aims to address the role of particle size distribution on Pt stability. A theoretical model is built based on modified Butler-Volmer equations, platinum oxide surface coverage and interparticle interactions between platinum oxide particles. Preliminary results demonstrate the change in platinum ions concentration across the electrode and membrane and reveal the effect of potential cycling on the particle size. Further research on the effect of particle size and potential cycling on electrochemically active surface area and its comparison with experimental data is in progress.
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