A solid oxide fuel cell micro-scale modeling with spherical particle shaped electrodes P. Chinda, S. Chanchaona, P. Brault and W. Wechsatol Eur. Phys. J. Appl. Phys., 54 2 (2011) 23411 Published online: 18 May 2011 DOI: 10.1051/epjap/2011100171