Ba(Zr0.1Ce0.7Y0.2)O3-£_ (BZCY) shows high proton conductivity as well as high chemical stability over a wide range of solid oxide fuel cell (SOFC) operating conditions. Sm0.5Sr0.5CoO3-£_ (SSC) cathode deposited by electrostatic spray deposition (ESD) on SOFC half cell obtained via tape-casting shows porous and reticular microstructure, and the SOFC single cell consists of substrate/ BZCY+NiO/ BZCY/ SSC. The electrolyte thickness decrease from 22 £gm, 20 £gm, 17.6 £gm to 15.1 £gm after sintering as the content of carbon pore former in the corresponding anode functional layer increased from 0.0 wt.%, 5.0 wt.%, 10.0 wt.% to 15.0 wt.%, and the maximum power density of corresponding cells at 700¢J varies from 476.89 mW/cm2, 713.34 mW/cm2, 862.50 mW/cm2 to 706.89 mW/cm2, respectively.