Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 23, Pages 9970-9974Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2011.08.029
Keywords
Nitrogen-doped carbon sphere; Carbon nanotube; Oxygen reduction; Fuel cell; Catalyst-free
Funding
- NSFC [51002106, 21005055]
- NSFC for Distinguished Young Scholars [51025207]
- BSTWZ [G20100191]
- NSFZJ [R4090137, Y4100520]
- ZJED Innovative Team
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Nitrogen-doped carbon spheres (NCS) are synthesized by directly pyrolyzing a nebulized solution of xylene and ethylenediamine via a spray pyrolysis method, without using a catalyst. X-ray photoelectron spectroscopy (XPS) measurements confirm that the NCS only contain C, N and O. The electrocatalytic performances show that the NCS exhibit a high catalytic activity, long-term stability, and an excellent methanol tolerance for the oxygen reduction reaction (ORR) in an alkaline medium. This study successfully develops a new non-precious metal catalyst, which exhibits an excellent electrocatalytic performance; using a simple, cost-effective and scalable method. It also provides an increased fundamental understanding in the origins of ORR activity enhancements using N-doped carbon materials. (C) 2011 Elsevier B.V. All rights reserved.
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