Architectures and Performance of High-Voltage, Microscale Single-Chamber Solid Oxide Fuel Cell Stacks
| Autor: | Yang Shao-Horn, Gerardo Jose La O, Ethan J. Crumlin |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | ECS Transactions. 7:981-986 |
| ISSN: | 1938-6737 1938-5862 |
| DOI: | 10.1149/1.2729193 |
| Popis: | In this study, we describe multi-cell SC-SOFC architectures with multiple different electrode/electrolyte systems. These SC-SOFCs are fabricated using thin-film techniques and patterned via photolithography. Micro SC-SOFCs with feature dimensions ranging from 5μm to 200μm are successfully constructed and repeatable. An OCV of approximately 380mV at 400{degree sign}C was found when using methane and air gases. OCV values were found to decrease with increasing temperature and a sign change in voltage was observed around 575{degree sign}C. Future studies will include the results from changing the sizes and spacing between electrodes to create a mechanistic study for SC-SOFCs to understand the rate limiting reactions and electrode selectivity. Additionally various SC-SOFC 'stacked' configurations of up to ten cells will be created. SC-SOFC variables will include changes in length, thickness, area and electrode/electrolyte material to observe the fuel cell stack performance as a result of the altered parameter. |
| Databáze: | OpenAIRE |
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