Oh, Kyeongmin Jeong, Gisu Cho, EunAe Kim, Whangi Ju, Hyunchul 2024-01-20T08:04:15Z 2024-01-20T08:04:15Z 2022-01-25 2014-12 0360-3199 https://pubs.kist.re.kr/handle/201004/126014 We present herein a carbon monoxide (CO) poisoning model for high-temperature proton exchange membrane fuel cells (HT-PEMFCs) comprising phosphoric acid-doped polybenzimidazole membranes. In the model, the adsorption/desorption processes of CO and hydrogen on the anode Pt catalysts, and subsequent electrochemical oxidation are rigorously considered. The CO poisoning model is incorporated into a previously developed three-dimensional HT-PEMFC model, and then both numerical simulations and experimental measurements are conducted for a comparative study. The simulation results generally agree well with the experimental data under various current density conditions, highlighting that it is necessary to consider the variable hydrogen adsorption kinetics as a function of CO fractional coverage to achieve better agreement with the experimental data. Furthermore, detailed key contours for hydrogen/CO fractional coverage, anode over-potential, temperature, and current density are provided to derive greater insights into the CO poisoning mechanisms and characteristics in HT-PEMFCs. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD A CO poisoning model for high-temperature proton exchange membrane fuel cells comprising phosphoric acid-doped polybenzimidazole membranes Article 10.1016/j.ijhydene.2014.06.101 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.39, no.36, pp.21915 - 21926 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 36 21915 21926 N scie scopus 000347576200112 2-s2.0-84955355238 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article CARBON-MONOXIDE HT-PEMFC GAS CROSSOVER PBI MEMBRANE PERFORMANCE HYDROGEN INTEGRATION ADSORPTION COMPONENTS OPERATION High-temperature proton exchange membrane fuel cell Polybenzimidazole (PBI) Numerical modeling CO poisoning