无机材料学报2021，Vol.36Issue(12)：1323-1329,7.DOI:10.15541/jim20210206
LaxSr2–xFe1.5Ni0.1Mo0.4O6–δ对称电池电解CO2研究
Symmetrical La3+-doped Sr2Fe1.5Ni0.1Mo0.4O6–δ Electrode Solid Oxide Fuel Cells for Pure CO2 Electrolysis
摘要
Abstract
Electrochemical reduction of the greenhouse gas CO2 in solid oxide electrolysis cells (SOECs) has attracted much attention due to their high energy conversion efficiency and great potential for carbon cycling. Compared with the asymmetrical configuration, symmetrical SOECs with the same material as anode and cathode, can greatly simplify the fabrication process and reduce the complication associated with varied interfaces. Perovskite oxides LaxSr2-xFe1.5Ni0.1Mo0.4O6-δ (LxSFNM, x=0.1, 0.2, 0.3 and 0.4) are prepared and evaluated as symmetrical electrodes in solid oxide electrolysis cells for electrochemical reduction of pure CO2. The polarization resistances are 0.07 ?·cm2 in air and 0.62 ?·cm2 in 50％ CO-50％ CO2 for L0.3SFNM electrode at 800 ℃. An electrolysis current density of 1.17 A·cm-2 under 800 ℃ at 1.5 V is achieved for the symmetrical SOECs in pure CO2. Furthermore, the symmetrical cell demonstrates excellent stability during the preliminary 50 h CO2 electrolysis measurements.关键词
对称固体氧化物电解池/钙钛矿结构/电极材料Key words
symmetrical solid oxide electrolysis cells/perovskite/electrode materials分类
化学化工引用本文复制引用
王玥,崔常松,王士维,占忠亮..LaxSr2–xFe1.5Ni0.1Mo0.4O6–δ对称电池电解CO2研究[J].无机材料学报,2021,36(12):1323-1329,7.基金项目
National Natural Science Foundation of China(51672298) （51672298）
State Grid Corporation of China(521205200011) （521205200011）
