Different　molar　ratios　Bi7WO13.5(BWO)　as　sintering　aids　are　used　to　modify　Nd2Ce2O7(NCO)　material　by　mechanical　method.　The　influence　of　Bi7WO13.5　additions　on　the　phase　structure,　linear　shrinkage,　micromorphology　and　electrical　conduction　behaviors　of　Nd2Ce2O7　are　characterized　by　X-Ray　diffraction(XRD),　dilatometry　technique,　Raman　spectroscopy,　Scanning　electron　microscopy(SEM)　and　Electrochemical　impedance　spectroscopy(EIS).　All　modified　samples　still　retain　the　fluorite-type　structure.　BWO　additives　in　all　molar　ratios　greatly　improve　the　sintering　ability.　It　is　found　that　5mol%　BWO　doped　NCO(NCO-5)　promote　the　linear　shrinkage　from　6.60%　to　21.23%　at　1300　degrees　C.　Electrochemical　characterizations　reveal　that　high　total　conductivities　of　all　modified　ceramics　are　obtained　through　this　modified　method.　The　conductivity　of　modified　NCO　sample　sintered　at　1300　degrees　C　is　higher　than　that　of　unmodified　NCO　pellet　sintered　at　1500　degrees　C.　Especially　the　NCO-5　pellet　offers　1.38　x　10(-2)　and　2.26　x　10(-2)　Scm(-1)　at　750　degrees　C　in　dry　air　and　5%　H-2-Ar　conditions,　respectively.　Furthermore,　an　anode-supported　single　cell　with　NCO-5　electrolyte　is　manufactured　and　test,　the　cell　displays　a　peak　power　density　of　613　mWcm(-2)　at　750　degrees　C.　All　these　results　indicate　the　BWO　can　be　used　as　sintering　aids　for　NCO　electrolyte　to　improve　the　sintering　ability　and　electrochemical　performance.　(C)　2020　Elsevier　B.V.　All　rights　reserved.