| 摘要 |
A platinum alloy catalyst PtXY, wherein X is cobalt, chromium, copper, titanium or manganese and Y is tantalum, characterised in that in the alloy the atomic percentage of platinum is 46-75at%, of X is 25-40at% and of Y is 1-20at%. The catalyst has particular use as an oxygen reduction catalyst in fuel cells, and in particular in phosphoric acid fuel cells. |
