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Anchoring a Co/2-methylimidazole complex on ion-exchange resin and its transformation to Co/N-doped carbon as an electrocatalyst for the ORR
- Source :
- Catalysis Science & Technology. 9:578-582
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- Synthesizing high-activity metal/heteroatom-co-doped carbon (M/H–C) electrocatalysts for the oxygen reduction reaction (ORR) is critical for the commercialization of fuel cells, but remains challenging because of the difficulty in making highly dispersed (M/H–C) electrocatalysts. Herein, a commercial ion-exchange resin, Amberlyst 15, is used as a support, and Co/2-methylimidazole is anchored on the ion-exchange site of the support to obtain Co/N/Amb as the precursor of the M/H–C electrocatalyst. After the precursor is pyrolyzed and converted into Co/N/C materials, it is activated with CO2, and the obtained material (act-Co/N/C) exhibits remarkable ORR activity with a high onset potential of 0.943 V (vs. the reversible hydrogen electrode) and an excellent kinetic current density comparable to commercial 5 wt% Pt/C in an alkaline medium. The favorable activity is mainly attributed to the ultra-dispersed CoNx and high porosity of act-Co/N/C. Our synthetic strategy could be applied to the preparation of other well-dispersed M/H–C materials. This work opens a new direction in the synthetic strategy of carbon materials. Financial support from MINECO (CTQ2015-66080-R) and HEIWA NAKAJIMA FOUNDATION is acknowledged.
- Subjects :
- ORR
chemistry.chemical_element
2-Methylimidazole
010402 general chemistry
Electrocatalyst
01 natural sciences
Catalysis
Metal
chemistry.chemical_compound
Química Física
Ion-exchange resin
Química Inorgánica
010405 organic chemistry
0104 chemical sciences
Co/N-doped carbon
chemistry
visual_art
visual_art.visual_art_medium
Reversible hydrogen electrode
Co/2-methylimidazole complex
Carbon
Pyrolysis
Nuclear chemistry
Subjects
Details
- ISSN :
- 20444761 and 20444753
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Catalysis Science & Technology
- Accession number :
- edsair.doi.dedup.....9a33c0f4e8317eb9a12dfa48d3a7796c
- Full Text :
- https://doi.org/10.1039/c8cy02210k