催化作用
铂金
电解质
碳纤维
化学工程
氢
燃料电池
氮气
氧气
化学
多孔性
膜
材料科学
无机化学
电极
有机化学
复合材料
工程类
物理化学
复合数
生物化学
作者
Hyun Kyu Chung,David A. Cullen,Drew Higgins,Brian T. Sneed,Edward F. Holby,Karren L. More,Piotr Zelenay
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2017-08-04
卷期号:357 (6350): 479-484
被引量:1259
标识
DOI:10.1126/science.aan2255
摘要
Replacing platinum in air-fed fuel cells Replacing expensive and scarce platinum catalysts in polymer electrolyte membrane fuel cells for the oxygen reduction reaction (ORR) with ones based on non-noble metals would speed up the adoption of hydrogen fuel vehicles. Most of the candidate replacement catalysts that have shown high performance do so only when running on pure oxygen. Chung et al. developed an iron-nitrogen-carbon catalyst from two nitrogen precursors that forms a high-porosity structure and exhibits high ORR performance when running on air. The proposed catalytically active site is FeN 4 . Science , this issue p. 479
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