Enhanced CO2 Electrolysis with Mn-doped SrFeO3-δ Cathode

被引：0

作者：

后士胜 ^{[1
,2
]}

许泽桐 ^{[2
]}

张优凯 ^{[1
,2
]}

谢奎 ^{[2
]}

甘丽珍 ^{[1
,2
]}

机构：

[1] College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University

[2] Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences

来源：

Chinese Journal of Structural Chemistry | 2020年 / 39卷 / 09期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.14102/j.cnki.0254-5861.2011-2672

中图分类号：

TM911.4 [燃料电池]; O646.5 [电解与电极作用];

学科分类号：

摘要：

Solid oxide carbon dioxide electrolysers are expected to play a key role in carbon-neutral energy landscape. However, the limited activity of traditional ceramic cathodes still restricts the electrochemical performance. Here we report the doping of Mn at the B site of SrFeOcathode to improve COelectrolysis. The oxygen vacancy concentration is increased by ～30% with Mn doping while the surface oxygen exchange coefficients are enhanced by ～10 times. The chemisorption of COindicates the presence of chemical intermediate state between COmolecule and carbonate ion on the oxygen-deficient cathode surface which therefore leads to the desorption temperature of ～800 ℃. The Mn-doped SrFeOenhances COelectrolysis with no performance degradation being observed even after high-temperature operation of 100 hours.

引用

页码：1662 / 1668

页数：7

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