Investigation of Solid Oxide Electrolysis Cell Electrodes for Methane Synthesis
Investigation of Solid Oxide Electrolysis Cell Electrodes for Methane Synthesis
复制标题
甲烷合成固体氧化物电解池电极的研究
DOI：
10.1149/07801.3247ecst
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. Ted Oyama
中科院分区：
文献类型：
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作者：
Naoya Fujiwara;Ryuji Kikuchi;Atsushi Takagaki;Takashi Sugawara;S. Ted Oyama
La0. 6Sr0. 4Co0。2Fe0. 8O3-δ-Ce0. 8Sm0。2O1 9种复合材料（LSCF-SDC）与铂进行比较。与LSM相比，LSCF-SDC具有更低的过电位和更高的稳定性。铂金表现出比LSCF-SDC更好的性能。Ni-SDC被用于阴极，并且针对几个操作温度和电流密度分析阴极出口气体组成。结果表明，在极化条件下，催化剂的甲烷化活性得到提高。还研究了钌添加到阴极的影响。阻抗分析结合气体成分的测量显示钌的高电化学活性，而甲烷的产生可能是由于甲烷重整反应的钌促进抑制。
La0. 6Sr0. 4Co0. 2Fe0. 8O3-δ-Ce0. 8Sm0. 2O1. 9 composite (LSCF-SDC) and platinum were compared. The cell with LSCF-SDC exhibited lower overpotentials and higher stability than LSM. Platinum showed even better performance than LSCF-SDC. Ni-SDC was used for the cathode, and the cathode outlet gas compositions were analyzed for several operation temperatures and current densities. It was found that catalytic activity for methanation was enhanced under polarized conditions. Effects of ruthenium addition to the cathode were also examined. Impedance analysis combined with gas composition measurements revealed high electrochemical activity of ruthenium, while methane production was suppressed possibly due to methane reforming reactions promoted by ruthenium.