Journal
ACS CATALYSIS
Volume 4, Issue 10, Pages 3797-3805Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs500744x
Keywords
doped carbon; effect; oxygen reduction reaction; performance; structure; transition metals
Categories
Funding
- National Science Foundation of China (NSFC) [21076089, 21276098, 11132004, U1301245]
- Ministry of Science and Technology of China [2012AA053402]
- Guangdong Natural Science Foundation [S2012020011061]
- Doctoral Fund of the Ministry of Education of China [20110172110012]
- Basic Scientific Foundation of the Central Universities of China [2013ZP0013]
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In this work, the effects of the addition of transition metals (Mn, Fe, Co, Ni, Cu) on the structure and performance of the doped carbon catalysts M-PANI/C-Mela are investigated. The results show that the doping of various transition metals affected structures and performances of the catalysts significantly. Doping with Fe and Mn leads to a catalyst with a graphene-like structure, and doping with Co, Ni, and Cu leads to a disordered or nanosheet structure. The doping of transition metals can enhance the performance of the catalysts, and their ORR activity follows the order of Fe > Co > Cu > Mn > Ni, which is consistent with the order of their active N contents. We suggest that the various performance enhancements of the transition metals may be the result of the joint effect of the following three aspects: the N content/active N content, metal residue, and the surface area and pore structure, but not the effect of any single factor.
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