| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst comprising a nitrogen-containing active carbide, its production method and an electrochemical device using the catalyst. <P>SOLUTION: In producing an oxygen reduction catalyst comprising the nitrogen-containing active carbide by steam activation after granulation and calcination of a mixture of a carbonaceous solid raw material (coal-based binder pitch) and a nitrogen-containing organic compound (melamine, etc.) or a nitrogen-containing organic polymeric compound (polyacrylonitrile, melamine resin, etc.), the abundance ratio of nitrogen on a surface, the abundance ratio of carbon taking part in a shakeup process, and the spin concentration of unpaired electron exhibiting Curie paramagnetism are controlled for enhancements by selection of the temperature of calcination, the mixing ratio of the carbonaceous solid raw material with the nitrogen-containing organic compound, or the nitrogen-containing organic polymeric compound. In the incorporation into an electrical device, the transfer of ions and electrons is smoothened by forming a catalyst layer by mixing the catalyst with an ion conductive polymer, and in application to a polymeric electrolytic type fuel cell, MEA is produced. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
