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- Title
Nitrogen-Doped Pt/C Electrocatalysts with Enhanced Activity and Stability toward the Oxygen Reduction Reaction.
- Authors
Choi, Sang‐Il; Lee, Su‐Un; Choi, Ran; Park, Joon T.; Han, Sang Woo
- Abstract
Recently, nitrogen-doped carbon materials have proved to be effective catalytic platforms for the oxygen reduction reaction (ORR). Despite the recent synthetic advances for the preparation of nitrogen-incorporated carbon materials, the low-temperature and water-based synthesis of nitrogen-doped carbon materials has rarely been explored due to the difficulties in nitrogen-doping under such mild conditions. Here, nitrogen-doped Pt/C (Pt/NC) catalysts are prepared using a facile, low-temperature, aqueous-phase method. Hydrazine treatment of a Pt/C catalyst successfully yields Pt/NC with controlled nitrogen content. The as-prepared Pt/NC catalysts exhibit enhanced electrocatalytic activity and stability toward ORR in comparison to nitrogen-free Pt/C, and their ORR activities are highly dependent on the level of nitrogen-doping. The Pt/NC catalyst containing 2.0 at % nitrogen results in the largest improvement of ORR activity.
- Subjects
SEMICONDUCTOR doping; CATALYTIC activity; OXYGEN reduction; PLATINUM catalysts; NITROGEN; AQUEOUS solutions
- Publication
ChemPlusChem, 2013, Vol 78, Issue 10, p1252
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.201300191