| 摘要 |
A catalytic material may be formed by taking carbon nanotubes, contacting the carbon nanotubes with a polyelectrolyte chain containing nitrogen atoms, so as to coat the carbon nanotubes with the polyelectrolyte chain, and then heat treating the coated carbon nanotubes to a temperature of at least 200°C. A suitable polyelectrolyte is poly- (diallyldimethylammonium chloride) (PDDAC). A preferred heat treatment temperature is between 400° and 440°C, and the catalytic activity appears to decrease with higher treatment temperatures. The resulting material is suitable for use as an oxygen reduction catalyst in a fuel cell electrode. It avoids the costs involved with use of platinum as catalyst. |
