Abstract
AbstractNitrogen‐doped carbon nanosheets (NDCN) with size‐defined mesopores are reported as highly efficient metal‐free catalyst for the oxygen reduction reaction (ORR). A uniform and tunable mesoporous structure of NDCN is prepared using a templating approach. Such controlled mesoporous structure in the NDCN exerts an essential influence on the electrocatalytic performance in both alkaline and acidic media for the ORR. The NDCN catalyst with a pore diameter of 22 nm exhibits a more positive ORR onset potential than that of Pt/C (−0.01 V vs. −0.02 V) and a high diffusion‐limited current approaching that of Pt/C (5.45 vs. 5.78 mA cm−2) in alkaline medium. Moreover, the catalyst shows pronounced electrocatalytic activity and long‐term stability towards the ORR under acidic conditions. The unique planar mesoporous shells of the NDCN provide exposed highly electroactive and stable catalytic sites, which boost the electrocatalytic activity of metal‐free NDCN catalyst.
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Dates
Type | When |
---|---|
Created | 11 years, 7 months ago (Jan. 23, 2014, 6:15 p.m.) |
Deposited | 1 year, 10 months ago (Oct. 17, 2023, 3:59 p.m.) |
Indexed | 3 months, 1 week ago (May 20, 2025, 9:52 a.m.) |
Issued | 11 years, 7 months ago (Jan. 23, 2014) |
Published | 11 years, 7 months ago (Jan. 23, 2014) |
Published Online | 11 years, 7 months ago (Jan. 23, 2014) |
Published Print | 11 years, 6 months ago (Feb. 3, 2014) |
@article{Wei_2014, title={Nitrogen‐Doped Carbon Nanosheets with Size‐Defined Mesopores as Highly Efficient Metal‐Free Catalyst for the Oxygen Reduction Reaction}, volume={126}, ISSN={1521-3757}, url={http://dx.doi.org/10.1002/ange.201307319}, DOI={10.1002/ange.201307319}, number={6}, journal={Angewandte Chemie}, publisher={Wiley}, author={Wei, Wei and Liang, Haiwei and Parvez, Khaled and Zhuang, Xiaodong and Feng, Xinliang and Müllen, Klaus}, year={2014}, month=jan, pages={1596–1600} }