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From cage-in-cage MOF to N-doped and Co-nanoparticle-embedded carbon for oxygen reduction reaction.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 4/21/2015, Vol. 44 Issue 15, p6748-6754. 7p. - Publication Year :
- 2015
-
Abstract
- By one-step pyrolysis of a unique “cage-in-cage” cobalt metal–organic framework, nitrogen-doped carbon cubes embedded with numerous metallic Co nanoparticles were obtained. A considerable amount of Co particles was encapsulated in thin carbon shells and formed the core–shell-like Co@C structure. With about 60 wt% Co particles in the prepared sample, the nanocomposites of Co nanoparticles and nitrogen-doped carbon show electrocatalytic activity for the oxygen reduction reaction (ORR) with an efficiency comparable to the commercial Pt/C catalyst, but with better durability and methanol-tolerance performance. The metallic Co nanoparticles were found to play an important role in enhancing the ORR activity of the nanocomposites. This simple one-step pyrolysis method provides a novel synthetic route for the synthesis of core–shell-like Co@C nano-composites. The synthesized material represents a highly active non-precious metal catalyst for ORR. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 44
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 101906568
- Full Text :
- https://doi.org/10.1039/c4dt03726j