Enhanced electrochemical properties of Sm_(0.2)Ce_(0.8)O_(1.9) film for SOFC electrolyte fabricated by pulsed laser deposition  

作　　者：Xi-Feng Ding Jing-Yu Shen Xiao-Jia Gao Jun Wang 

机构地区：[1]School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Rare Metals》2021年第5期1294-1299,共6页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.50902069);the Natural Science Foundation of Jiangsu Province(No.BK2012806);the Fundamental Research Funds for the Central Universities(No.30920130111022)。

摘　　要：The cubic fluorite structure Sm_(0.2)Ce_(0.8)O_(1.9)(SDC)film was fabricated by pulsed laser deposition(PLD)to be used as electrolyte for solid oxide fuel cells(SOFCs).The SDC target was prepared by co-precipitation process at a low sintering temperature(1,250℃)with a relative density of 97%.By inserting the PLD seed layer with the thickness of 3μm,robust electrolyte films were successfully fabricated on La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)substrate.The SDC film growing at a substrate temperature of 650℃with thermal treatment and oxygen gas pressure of 10 Pa has high ionic conductivity of 0.075 S·cm^(-1) at 800℃.The results demonstrate that the dense SDC thin films prepared by PLD are suitable for low-temperature SOFC applications.

关 键 词：Pulsed laser deposition ELECTROLYTE Sm_(0.2)Ce_(0.8)O_(1.9) Ionic conductivity 

分 类 号：TB383.2[一般工业技术—材料科学与工程]