Improved performance of solid oxide fuel cell with pulsed laser deposited thin film ceria-zirconia bilayer electrolytes on modified anode substrate

► Fabricate thin film YSZ/SDC bilayer electrolytes SOFCs by pulsed laser deposition. ► The thin YSZ layer blocks electronic current in SDC layer. ► The bilayer cell retains the chemical, mechanical and structural integrity. ► The electrochemical performance and OCVs of the cell have been improved.