Modelling and simulations on mitigation techniques for carbon oxidation reaction caused by local fuel starvation in a PEMFC

摘要

A two dimensional model is developed to simulate carbon corrosion reaction caused by local fuel starvation during the operation of a PEMFC. This work focuses on the evaluation of different mitigation techniques for carbon corrosion reactions, namely use of catalyst with high oxygen evolution reaction (OER) activity, membrane of low O_2 diffusivity, corrosion-resistant carbon support and high proton conductivity in the catalyst layer. It is found that using the OER-favorable catalyst and low O_2-diffusivity membrane are two effective techniques for mitigation of carbon corrosion reaction for local starvation.