Partially oxidized niobium carbonitride as non-platinum cathode for PEFC
Partially oxidized niobium carbonitride as non-platinum cathode for PEFC
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部分氧化碳氮化铌作为 PEFC 非铂阴极
DOI：
10.1149/1.3216456
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发表时间：
2009
影响因子：
--
通讯作者：
K. Ota
中科院分区：
文献类型：
--
作者：
K. Nam;A. Ishihara;K. Matsuzawa;S. Mitsushima;K. Ota
研究了部分氧化碳氮化铌用于聚合物电解质燃料电池（pefc）的非铂阴极。在含有30或100 ppm o2的惰性气体中，在1000℃下部分氧化10h，样品的x射线衍射图中观察到nbo2或bn2o5。含n2o5的样品的氧还原反应（ORR）的催化活性高于含n2o2和制备的nbc0.5 n0.5的样品。x射线光电子能谱表明，Nb的最高氧化态影响了ORR催化活性的提高。
Partially oxidized niobium carbonitride has been examined to apply to a non-platinum cathode for polymer electrolyte fuel cells (PEFCs). NbC 0.5 N 0.5 powder was partially oxidized in an inert gas containing 30 or 100 ppm O 2 at 1000°C for 10 h. NbO 2 or Nb 2 O 5 was observed in the X-ray diffraction patterns of the specimens. The catalytic activity for the oxygen reduction reaction (ORR) of the specimen that contained Nb 2 O 5 was higher than that of the specimens with NbO 2 and as-prepared NbC 0.5 N 0.5. X-ray photoelectron spectra suggested that the highest oxidation state of Nb affected the improvement of the catalytic activity for the ORR.