Article ID Journal Published Year Pages File Type
1292326 Journal of Power Sources 2016 7 Pages PDF
Abstract

•Abundant structural defects on graphene enhance the ORR activity.•Balanced N distribution on graphene could also improve the ORR activity.•Structural defects and N distribution are adjusted by regulating temperature.•NG-1000 shows notable ORR activities in both alkaline and acid media.

N-doped graphene (NG) is a promising candidate for oxygen reduction reaction (ORR) in the cathode of fuel cells. However, the catalytic activity of NG is lower than that of commercial Pt/C in alkaline and acidic media. In this study, NG samples were obtained using urea as N source. The structural defects and N distribution in the samples were adjusted by regulating the pyrolysis temperature. The new NG type exhibited remarkable catalytic activities for ORR in both alkaline and acidic media.

Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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