| 摘要 |
Provided is carbon black on which catalytic metal particles can be supported in a highly dispersed manner, and which exhibits excellent oxidation resistance. The carbon black is characterized in having a specific surface area, as measured by the BET method, of 200-500m2, a crystal layer thickness Lc, as measured by X ray diffraction, of 20-30Å, and an average primary particle diameter of 15-25nm. The content of volatile matter in the carbon black is preferably 0.10-1.00%. A fuel cell catalyst is obtained by supporting catalytic metal particles on the carbon black. |
