TY - GEN
T1 - Effect of the geometries of current collectors on the power density in a solid oxide fuel cell
AU - Li, Peiwen
AU - Tao, Gege
PY - 2008
Y1 - 2008
N2 - An analytical model is proposed, and the analysis is conducted for solid oxide fuel cells in order to achieve higher power densities. The analytical model is designated to help designers to optimize the current collector sizes and spacing, and also the geometrical shapes of the current collectors as well. The analytical model basically has a whole consideration about the ohmic polarization, the species concentration polarization, and the activation polarization; while the load of optimization computations and analysis is greatly alleviated for engineering designers. From the analysis of several cases, it is recommended that 3D pillars be used for the current collectors in SOFCs incorporating with appropriate measures of a uniform flow distribution. It is also clear that unless limited by the fabrication technologies for the bipolar plates, a smaller control area and current collectors are preferable to SOFCs to have higher power densities.
AB - An analytical model is proposed, and the analysis is conducted for solid oxide fuel cells in order to achieve higher power densities. The analytical model is designated to help designers to optimize the current collector sizes and spacing, and also the geometrical shapes of the current collectors as well. The analytical model basically has a whole consideration about the ohmic polarization, the species concentration polarization, and the activation polarization; while the load of optimization computations and analysis is greatly alleviated for engineering designers. From the analysis of several cases, it is recommended that 3D pillars be used for the current collectors in SOFCs incorporating with appropriate measures of a uniform flow distribution. It is also clear that unless limited by the fabrication technologies for the bipolar plates, a smaller control area and current collectors are preferable to SOFCs to have higher power densities.
UR - http://www.scopus.com/inward/record.url?scp=44249093025&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44249093025&partnerID=8YFLogxK
U2 - 10.1115/IMECE2007-41032
DO - 10.1115/IMECE2007-41032
M3 - Conference contribution
AN - SCOPUS:44249093025
SN - 0791843009
SN - 9780791843000
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings
SP - 579
EP - 586
BT - Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
T2 - ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Y2 - 11 November 2007 through 15 November 2007
ER -