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Method to Enhance Fuel Cell Powertrain System Robustness by Reducing Cathode Potential during Start-Up Condition
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
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This study investigates a system and a method to enhance fuel cell vehicle robustness during vehicle start/stop cycle by mitigating cathode half-cell potential spikes. Multiple dynamic hydrogen reference electrodes were installed in the fuel cell under test to observe changes of anode and cathode half-cell potentials during simulated system startup and shutdown conditions. Multiple reference electrodes were used to measure localized anode and cathode half-cell potentials in an active area. A 1.4-1.8 V half-cell potential spike at the cathode in the startup condition was observed due to a hydrogen/air boundary formed within the anode flow field. Various system solutions have been studied to contain the cathode half-cell potential spikes, such as purging with inert gas, or inserting a shunt resistor as a shorting component between the anode and the cathode. In this study, a method of connecting an electrical load prior to flowing hydrogen fuel to the cell was tested. Pre-loading the fuel cell proved to be an effective method to reduce the cathode potential spike during simulated startup conditions. The hypothesis is that the load current inhibits hydrogen oxidation reaction at anode. The effectiveness of the potential spike reduction varies with the level of load current and design of stack/cell. Optimization of load current control will be necessary to implement this method into a practical fuel cell system. An advantage of this method is that any additional component, such as a shunt resistor, is not required in the system.
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CitationWang, C. and Hirano, S., "Method to Enhance Fuel Cell Powertrain System Robustness by Reducing Cathode Potential during Start-Up Condition," SAE Technical Paper 2017-01-1186, 2017, https://doi.org/10.4271/2017-01-1186.
- USDRIVE Fuel Cell Technical Team Roadmap
- Reiser, C. Bregoli, L. Patterson, T. Yi, J. Yang, J. Perry, and M. Jarvi, T. “A Reverse-Current Decay Mechanism for Fuel Cells”, Electrochemical Solid-State Letter, 8, A273 (2005).
- Meyers J. and Darling, R. “Model of Carbon Corrosion in PEM Fuel Cells”, Journal of the Electrochemical Society, 153, A1432 (2006).
- Maass, S. Finsterwalder, F. Frank, G. Hartmann, and R. Merten, C. “Carbon Support Oxidation in PEM Fuel Cell Cathodes”, Journal of Power Sources 176, 444 (2008).
- Kangasniemi, K. Condit, and D. Jarvi, T. “Characterization of Vulcan Electrochemically Oxidized under Simulated PEM Fuel Cell Conditions”, Journal of the Electrochemical Society, 151, E125 (2004).
- Hu, J. Sui, P. C. Kumar, and S. Djilali, N. “Modelling and Simulations of Carbon Corrosion during Operation of a Polymer Electrolyte Membrane Fuel Cell”, Electrochimica Acta 54, 5583 (2009).
- Tang, H. Qi, Z. Ramani, and M. Elter, J. “PEM Fuel Cell Cathode Carbon Corrosion due to the Formation of Air/Fuel Boundary at the Anode”, Journal of Power Sources 158, 1306 (2008).
- Bekkedahl, T. Bregoli, L. Breault, R. Dykeman, E. Meyers, J. Patterson, T. Skiba, T. Vargas, C. Yang, and D. Yi, J. “Reducing Fuel Cell Cathode Potential during Startup and Shutdown”, U.S. Pat., 6,913,845 B2, (2005).
- Gu, W. Yu, P. T. Carter, R. N. Makharia, and R. Gasteiger, H. A. “Modeling and Diagnostics of Polymer Electrolyte Fuel Cells—Local H2 Starvation and Start–Stop Induced Carbon-Support Corrosion”, Modern Aspects of Electrochemistry 49,Springer Science + Business Media, LLC, New York (2010).
- Oyarce, A. Zakrisson, E. Ivity, M. Lagergren, C. Ofstad, A. Bod´en, and A. Lindbergh, G. “Comparing Shut-down Strategies for Proton Exchange Membrane Fuel Cells”, Journal of Power Sources 254, 232 (2014).
- Dillet, J. Spernjak, D. Lamibrac, A. Maranzana, G. Mukundan, R. Fairweather, J. Didierjean, S. Borup, and R. L. Lottin, O. “Impact of Flow Rates and Electrode Specifications on Degradations during Repeated Startups and Shutdowns in Polymer-electrolyte Membrane Fuel Cells”, Journal of Power Sources 250, 68 (2014).
- Rogahn, A. Clingerman B., and Gerzseny, J. Anode Air Purge Valve Design, U.S. Pat., 7,771.888 B2 (2010)
- Breault R. and Rohrbach, C. Sartup and shutdown Procedures for Operating a Fuel Cell Assembly, U.S. Pat., 8,492,038 B2 (2004)
- Reiser, C. Yang, and D. Sawyer, R. Procedure for Starting up a Fuel Cell System Using a Fuel Purge, U.S. Pat., 20020076582 A1(2002)
- Oh D. and Lee, J. H. Fuel Cell Startup Apparatus and Method, U.S. Pat., 2015/0064582 A1 (2015)
- Bekkedahl, T. Bregoli, L. Breault, R. Dykeman, E. Meyers, J. Patterson, T. Skiba, T. Vargas, C. Yang D. and Yi, J. Reducing Fuel Cell Cathode Potential during Startup and Shutdown, U.S. Pat., 6913845 B2 (2005)
- Lauritzen, M. He, P. Young, A. Knights, S. Colbow V. and Beattie, P. Study of Fuel Cell Corrosion Processes Using Dynamic Hydrogen Reference Electrodes, Journal of New Materials for Electrochemical Systems 1, 143–145 (2007)