In　the　present　work,　La1.9M0.1Ce2O7　(M　=　Nd,　Sm,　Dy,　Y,　In)　powders　are　synthesized　by　citric　acid-nitrate　solgel　combustion　method.　The　effects　of　the　acceptor　dopant　on　the　phase　structure,　microstructure　and　electrical　properties　of　La1.9M0.1Ce2O7　ceramics　are　investigated.　All　La1.9M0.1Ce2O7　ceramics　possess　a　single-phase　fluorite　structure.　It　turns　out　that　the　In-doped　ceramic　exhibits　the　highest　electrical　conductivity　of　0.82　x　10(-2)　and　2.03　x　10(-25)　cm(-1)　at　700　degrees　C　both　in　dry　air　and　wet　5%　H-2　Ar　atmospheres,　respectively.　Furthermore,　in　order　to　eliminate　the　internal　short　circuit　resulting　from　the　reduction　of　Ce4+　to　Ce3+,　a　novel　Ni-BaCe0.5Zr0.3Dy0.2O3.8　composite　is　applied　and　evaluated　as　the　anode　for　the　fuel　cell　based　on　La1.9M0.1Ce2O7　electrolyte.　Raman　and　scanning　electron　microscope　and　energy　dispersive　spectrometer　analyses　indicate　that　a　Ba-containing　electron-blocking　layer　is　formed　in-situ　at　the　anode/electrolyte　interface.　The　new　structured　fuel　cell　with　Ni-BaCe0.5Zr0.3Dy0.2O3-delta　anode　and　La1.9In0.1Ce2　O-7　electrolyte　exhibit　significantly　improved　open　circuit　voltage　of　1.005　V　along　with　maximum　power　density　of　546　mW　cm(-2)　at　700　degrees　C　using　humidified　hydrogen　fuel.　The　results　demonstrate　that　La1.9In0.1Ce2O7　electrolyte　and　Ni-BaCe0.5Zr0.3Dy0.2O3-delta　anode　can　be　considered　as　the　promising　candidates　for　solid　oxide　fuel　cells　applications.