期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 42, 期 31, 页码 19903-19912出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.06.017
关键词
Micropore; Nitrogen doped graphene-like carbon material; Electrocatalyst; Oxygen reduction reaction; Fuel cell; Non-platinum catalyst
资金
- National Natural Science Foundation of China [21476104, 21676135]
- Joint Funds of the National Natural Science Foundation and Liaoning of China [U1508202]
- Natural Science Foundation for Distinguished Young Scholars of Jiangsu Province [BK20150009]
- PAPD of Jiangsu Higher Education Institutions
- Qing Lan Project of Jiangsu Province
- Six Talent Peaks Program of Jiangsu Province
- Fundamental Research Funds for the Central Universities, China
Nitrogen-doped carbon materials are known to be promising candidates as oxygen reduction reaction electrocatalysts used in fuel cells. However, developing metal-free catalysts with high performance and stability still remains a big challenge. Herein we report a new route by using the Maillard reaction, to caramelize ribose in a dispersing salt matrix, followed by carbonization of this caramel to synthesize metal-free catalysts. This catalytic material has the morphology of microporous nitrogen doped graphene-like carbon, and a highest surface area of 1261 m(2) g(-1) with a large amount of micropores. Such microporous structure offers numerous defects that generate a large number of reactive sites. As a result, when used as the cathode materials in fuel cells, the fuel cell shows a high power density of 547 mW cm(-2) under 1.0 atm back pressure with good stability with only 12.5% loss after 250 h. Such catalyst has good performance in the class of metal-free oxygen reduction reaction catalysts, and is possible for commercial use. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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