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- Title
Durability Enhancement of Intermetallics Electrocatalysts via N-anchor Effect for Fuel Cells.
- Authors
Xiang Li; Li An; Xin Chen; Nanlin Zhang; Dingguo Xia; Weifeng Huang; Wangsheng Chu; Ziyu Wu
- Abstract
Insufficient durability and catalytic activity of oxygen reduction reaction (ORR) electrocatalyst are key issues that have to be solved for the practical application of low temperature fuel cell. This paper introduces a new catalyst design strategy using N-anchor to promote the corrosion resistance of electrocatalyst. The as-synthesized N-Pt3Fe1/C shows a high electrocatalytic activity and a superior durability towards ORR. The kinetic current density of N-Pt3Fe1/C as normalized by ECSA is still as high as 0.145 mA cm-2 and only 7% loss after 20000 potential cycles from 0.6 to 1.2 V (vs. NHE) in O2-bubbling perchloric acid solution, whereas Pt3Fe1/C shows 49% loss under the same tests. The N-anchor approach offers novel opportunities for the development of ORR catalyst with excellent electrochemical properties.
- Subjects
DURABILITY; INTERMETALLIC compounds; ELECTROCATALYSTS; FUEL cells; CORROSION resistance
- Publication
Scientific Reports, 2013, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep03234