| abstract |
Disclosed is an oxide- and/or nitride-based carrier for an electrode catalyst, which is used for an electrode of a solid polymer fuel cell (PEFC). The carrier for an electrode catalyst is characterized by being composed of a fused body of primary particles of oxides of one or more metals selected from among rare earth elements, alkaline earth elements, transition metals, niobium, bismuth, tin, antimony, zirconium, molybdenum, indium, tantalum and tungsten. The carrier for an electrode catalyst is also characterized in that at least 80% of the primary particles of metal oxides having a size of 5-100 nm are fused and bonded together, thereby forming chain-like or tufted structures each of which is composed of 5 or more of the primary particles. |