Measurement of ohmic voltage losses in individual cells of a PEMFC stack |
| |
| Affiliation: | 1. Hawaii Natural Energy Institute, University of Hawaii, Honolulu, HI 96822, USA;2. Pajarito Powder, LLC, 3600 Osuna Road NE, Suite 309, Albuquerque, NM 87109-4427, USA;3. IRD Fuel Cells, LLC, 8500 Washington St. NE, Albuquerque, NM 87113, USA;4. GRandalytics, 2343 Oahu Avenue, Honolulu, HI 96822, USA;5. National Renewable Energy Laboratory, Golden, CO 80401, USA;6. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-14: Electrochemical Process Engineering, D-52425 Jülich, Germany;1. Kazan National Research Technical University named after A.N.Tupolev – KAI, 10, K.Marx Str., 420111, Kazan, Russian Federation;2. Institut Pprime, UPR 3346 CNRS, Université de Poitiers, ENSMA, Batiment B25: 2, rue Pierre Brousse, TSA 41105, 86073 POITIERS Cedex 9, France;1. Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL, Pune, India;2. CSIR-National Chemical Laboratory, Pune, India;3. CSIR-Central Electrochemical Research Institute, CSIR Madras Complex, Chennai, India;4. Reliance Industries Ltd, Navi Mumbai, India;1. Principal Consultant, Fuel Cells & Electrolyzers, Golden, CO 80401, USA;2. Pollet Research Group, Green Hydrogen Lab, Hydrogen Research Institute, Université du Québec à Trois-Rivières (UQTR), 3351 Boulevard des Forges, Trois-Rivières, Québec, G9A 5H7, Canada;3. Hydrogen Energy and Sonochemistry Research Group, Department of Energy and Process Engineering, Faculty of Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway;1. College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China;2. College of Chemical Engineering, Fuzhou University, Fuzhou 350116, Fujian, China;3. Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China |
| |
| Abstract: | The ohmic voltage loss in a fuel cell can be determined with the current interruption method. The method was utilized to measure the ohmic voltage loss in an individual cell of a fuel cell stack. This was achieved by producing voltage transients and monitoring them with a digital oscilloscope connected in parallel with the individual cell. In this study, the method was applied to a small polymer electrolyte membrane fuel cell (PEMFC) stack in which different air supply levels were employed on the cathode side. In the case of higher air-feed rate, the results revealed an increase of ohmic losses in the middle of the stack by up to 21% at 400 mA cm−2, compared to the unit cell with the lowest ohmic loss. This probably resulted from the decrease of membrane conductivity because of drying. Comparison to individual cell voltages showed that the decrease of conductivity would not be observed if only the individual cell voltages alone were measured. The total ohmic loss in the stack was measured using the same method to verify the reliability of the measurement system. The results indicate a good agreement between the total ohmic loss and the combined ohmic losses in the individual cells. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
