Solid oxide fuel cells tubular design

Ciano C., Cali M., Melhus O., Verda V., 2006. A model for the configuration design of a tubular Solid Oxide Fuel Cell Stack. ASME Paper IMECE2006-16141, Chicago, IL, November 5-10, 2006. 

Haynes C., Wepfer W.J., 2000. Design for power of a commercial grade tubular solid oxide fuel cell. Energy Conversion Management 41, 1123-1139. 

Solid oxide fuel cell — Figure 3. Configuration for a tubular design SOFC [iii]... 

Kuchynka et al. [125] studied the electrochemical oxidative dimerization of methane to C2 hydrocarbon species using perovskite anode electrocatalysts. Three designs of solid oxide fuel cells were used, including tubular and flat plate solid electrolytes. The maximum current density for the dimerization reaction at these electrocatalysts was related to the oxygen binding energies on the catalyst surface. The anodic reaction was ... 

Fig. 7. Solid oxide fuel cell configurations. A Siemens-Westinghouse tubular cell B Tubular integrated interconnector concept. Similar interconnected systems exist in planar geometry C Planar SOFC designs, differing only in gas flow manifolding.

Figure 9.14 (a) An expanded view of a stack of planar design solid-oxide fuel cells (SOFCs) (b) tubular design of an SOFC (c) a stack of tubular SOFCs... 

Draper R., DiGiuseppe G., Optimal design of eurrent take off bus bars for tubular solid oxide fuel cells. Proceedings of ASME European Fuel Cell Conference 2005, Rome (Italy), 2005. 

Two main concepts for solid oxide fuel cells (SOFCs) are currently under development the tubular and the planar designs. In terms of long-term stability, the tubular concept has demonstrated the best results, while the planar design promises higher power densities. 

Lawlor V, et al. (2009) Review of the micro-tubular solid oxide fuel cell part I. Stack design issues and research activities. J Power Sources 193 387-399.doi 10.1016/j.jpowsour.2009.02.085... 

Solid Oxide Fuel Cells, History, Fig. 3 Tubular solid oxide fuel cell design... 

Not long after building this first model of a tubular solid-oxide fuel cell of electrolyte-supported design that was associated with large ohmic losses, Westinghouse switched to a new cathode-supported design admitting a much thinner electrolyte layer and thus much lower ohmic losses. Also, the YSZ electrolyte was used for all subsequent work. 

As for MCFC, internal reforming in SOFCs is possible over the anode catalyst partial oxidation reactions and direct oxidation of the fuel have also been found to occur [24—28]. Different concepts for solid oxide fuel cells have been developed over the years. Flat plates have an easier stack possibility, while tubular designs have a smaller sealing problem. Monolithic plates and even single-chamber designs have been considered and investigated for SOFC use [29-31]. 

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