原位浸渍法制备NiO-BZCYYb阳极支撑SOFCs及电化学性能

Fabrication and performance of NiO-BZCYYb anode-supported solid oxide fuel cells(SOFCs) by in-situ dip coating technique

采用原位浸渍法一步烧结成型制备了NiO-BaZr_(0.1)Ce_(0.7)Y_(0.1)Yb_(0.1)O_(3-δ)(BZCYYb)/SDC/LSCF管状结构阳极支撑型SDC电解质膜固体氧化物燃料电池(SOFCs)。以加湿H_2(约含有体积分数为3%的水)为燃料,空气为氧化剂,研究了电池的电化学性能、热循环性能和工作电压下运行的稳定性。结果表明:电池在600、650、700、750、800℃的开路电压分别为1.084、1.074、1.067、1.058、1.046 V;最大输出功率密度分别为_(0.1)2、0.25、0.38、0.54和0.70 W·cm^(-2)。单电池在700℃和0.7 V连续放电测试过程中稳定运行,没有明显的下降和衰退。单电池经历了11次热循环,输出功率稳定,能够经受住重复启动考验。

A tubular anode supported SOFCs with NiO-BaZr0.1Ce0.7Y0.1Yb0.1O3?δ(BZCYYb)/SDC/LSCF structure was fabricated by in-situ dip coating and one-step sintering technology.The electrochemical performance,thermal cycling performance and operating stability under working voltage of the single cell were obtained with the moist H2(3%(vol)H2O)as fuel and air as oxidant.The results indicate that the open-circuit voltage were 1.084,1.074,1.067,1.058 and 1.046 V,and the maximum power densities were 0.12,0.25,0.38,0.54 and 0.70 W·cm?2 at 600,650,700,750 and 800℃,respectively.The results also suggest that the single cell running stablely in continuous discharge testing process at 700℃and 0.7 V without obvious decline.The single cell had successfully experienced thermal cycling test for eleven times and the output power was stable.These results presented that the cell showed good thermo-mechanical properties and was able to withstand the repeated start-up tests.The developed SOFCs with new kind of anode(NiO-BZCYYb)are highly promising for industrial and commercial development applications in future.