Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 29, Pages 11999-12006Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202000936
Keywords
carbon defects; molecular design; nitrogen doping; oxygen reduction reaction
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Funding
- National Natural Science Foundation of China [21771107, 21902077]
- Natural Science Foundation of Jiangsu Province [BK20190381]
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The charge redistribution strategy driven by heteroatom doping or defect engineering has been developed as an efficient method to endow inert carbon with significant oxygen reduction reaction (ORR) activity. The synergetic effect between the two approaches is thus expected to be more effective for manipulating the charge distribution of carbon materials for exceptional ORR performance. Herein we report a novel molecular design strategy to achieve a 2D porous turbostratic carbon nanomesh with abundant N-doped carbon defects (NDC). The molecular level integration of aromatic rings as the carbon source and urea units as the N source and sacrificial template into the novel precursor of polyurea (PU) promises the formation of abundant carbon edge defects and N doping sites. A special active site-a carbon edge defect doped with a graphitic valley N atom-was revealed to be responsible for the exceptional ORR performance of NDC material.
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