Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
182495 | Electrochemistry Communications | 2007 | 4 Pages |
Abstract
A new procedure has been successfully developed by which PtNx/C is synthesized to enhance methanol tolerance while maintaining a high catalytic activity for the oxygen-reduction reaction (ORR). The nitrogen-modified Pt surface, which is prepared using a chelating agent followed by heat treatment, exhibits considerable selectivity toward the ORR in the presence of methanol. The high methanol tolerance could be attributed to the suppression of methanol adsorption resulting from the modification of the Pt surface with nitrogen. A direct methanol fuel-cell (DMFC) test showed that a power density of up to 120 m W cm−2 was generated when PtNx/C was used as the cathode catalyst (1 mg cm−2) in 6 M methanol and oxygen at 70 °C.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jong-Gil Oh, Chang-Ha Lee, Hansung Kim,