Effect of CO in the anode fuel on the performance of PEM fuel cell cathode |
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| Affiliation: | 1. Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA;2. Fuel Cell Research Lab., Eco Technology Center, Hyundai Motor Company, Yongin-si, Gyeonggi-do, 16891, Republic of Korea;1. Abengoa Research, Campus Palmas Altas, C/ Energía Solar n° 1, Palmas Altas, Spain;2. AICIA – Thermal Engineering Group, School of Engineering, Camino de los Descubrimientos s/n, 41092 Sevilla, Spain;3. INTA-National Institute for Aerospace Technology, Ctra. San Juan del Puerto-Matalascañas, km 33, 21130 Mazagon, Huelva, Spain;4. Dept. Fisica Aplicada, E.P.S. La Rabida, Universidad Huelva, 21819 Palos de la Frontera, Huelva, Spain;1. German Aerospace Center, Institute of Networked Energy Systems, Germany;2. The Hydrogen and Fuel Cell Center ZBT, Germany;1. Hawaii Natural Energy Institute, University of Hawaii, 1680 East-West Road, POST 109, Honolulu, HI 96822, USA;2. Departamento de Informática y Automática, UNED, Juan del Rosal 16, 28040 Madrid, Spain |
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| Abstract: | Even trace amounts of CO in the fuel for a proton-exchange membrane fuel cell (PEMFC) could poison not only the anode, which is directly exposed to the fuel, but also the cathode, which is separated from the fuel by a proton-exchange membrane; and the performance decline of the cathode is sometimes more than that of the anode. Adsorption of CO on the cathode catalyst has been detected electrochemically, and this indicates that CO can pass through the membrane to reach the cathode. To reduce such a poisoning effect, fuel cell operation conditions (e.g. level of membrane humidification, gas pressure difference between cathode and anode), membrane and catalyst layer structures, and CO-tolerant cathode catalysts should be further explored. |
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