Advances in solid oxide fuel cells IV: a collection of by Prabhakar Singh, Narottam P. Bansal

By Prabhakar Singh, Narottam P. Bansal

This quantity presents a one-stop source, compiling present study on sturdy oxide gasoline cells. it's a number of papers from the yankee Ceramic Society s thirty second foreign convention on complex Ceramics and Composites, January 27-February 1, 2008. subject matters contain contemporary technical development on materials-related features of gas cells and rising traits in electrochemical fabrics, cell/stack fabrication and layout, interface engineering, and long term chemical interactions. this can be a necessary, up to date source for researchers in undefined, govt, or academia who're operating with reliable oxide gas cells.

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Extra info for Advances in solid oxide fuel cells IV: a collection of papers presented at the 32nd International Conference on Advanced Ceramics and Composites, January 27-February 1, 2008, Daytona Beach, Florida

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The comparison of the power density curves as shown in Figure l b is also promising. HoweLer, the model overestimates the actual results in mid-range current densities. b a Figwe I. l8. It can be seen from the polarization curve that at higher current densities the curve has a concave up characteristic which is not an usual result for file1 cell applications. For an ordinary fuel cell. at higher current densities. concentration losses are dominant which is reflected as a concave down curve. As is discussed in the introduction section.

5W below 650°C. Figure 13. Module assembly and evaluation of prototype module for various applications CONCLUSION ‘The modeling. analysis, and testing strategies for SOFCs have been successfully established, The simulation results show interesting phenomena behind the small-diameter SOFC operations that correlates reasonably well with the experimental data. It is observed that at higher current densities there is a slight performance improvement due to ohmic heating which increases the cell temperature and the ionic conductivity of the electrolyte.

Even though a typical electrolyte material. Ceo SSmo 202-~, was used for an electrolyte 121. Despite the progress in material development, there are still drawbacks such as slow start up time and low robustness under rapid heat cycles. A way to avoid the drawbacks is to change the cell shape into the tubular design. Tubular SOFCs have successfully demonstrated their advantages over conventional (planar) SOFCs in regards to thermal stability during rapid heat cycling and possible high electrode area per volume.

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