| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing an electrode catalyst made of material which is stable even in a high electrical potential in an acidic electrolyte, comparatively inexpensive, comparatively large in resource quantities, and capable of obtaining a higher current value. <P>SOLUTION: In the method for producing the electrode catalyst, mixed material including the following first material and second material is hydrothermally reacted under presence of water in a super critical state or in a subcritical state to obtain a mixed precursor slurry. The mixed precursor slurry is dried by a freeze-drying method to obtain a mixed precursor. The obtained mixed precursor is burned under a condition that the second material can be changed into carbon material. The first material: a metal compound constituted of one or more kinds of elements selected from a group consisting of 4A and 5A groups, and one or more kinds of elements selected from a group consisting of hydrogen, nitrogen, chlorine, carbon, boron, sulfur, and oxygen. The second material: carbon material precursor or conductive material mixture with the carbon material precursor. <P>COPYRIGHT: (C)2013,JPO&INPIT |
