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Performance of nitrogen-containing macroporous carbon supported cobalt catalyst synthesized through in-situ construction of catalytic sites for oxygen reduction reaction.
- Source :
-
Journal of Power Sources . Jan2015, Vol. 274, p48-55. 8p. - Publication Year :
- 2015
-
Abstract
- A novel method of in-situ catalytic site (CoN x ) construction in macroporous carbon (MPC) is developed. The nitrogen-containing MPC-supported cobalt (Co/N–MPC) catalysts are synthesized via the pyrolysis of a mixture of glucose-urea resin, nano-CaCO 3 , and cobalt nitrate. The nano-CaCO 3 functions as a template to fabricate MPC that provides high electric conductivity and large specific surface area. The catalytic CoN x sites are simultaneously created during the formation of N–MPC. The use of glucose-urea resin as the carbon and nitrogen sources significantly increases the nitrogen content as high as 8.8 at% in the MPC. The synthesized Co/N–MPC demonstrates superb catalytic activity toward oxygen reduction reaction. The direct borohydride fuel cell using the Co/N–MPC shows a power density as high as 170 mW cm −2 which is much higher than the cell using 10 wt.% Pt/C but slightly lower than the cell using 20 wt.% Pt/C as the cathode catalyst at ambient conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 274
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 99791057
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2014.10.041