Journal
NANOSCALE
Volume 8, Issue 45, Pages 19086-19092Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr06817k
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Funding
- National Natural Science Foundation [21306060, 21573083]
- Program for New Century Excellent Talents in University (China) [NCET-13-0237]
- Ministry of Education of China [20130142120039]
- Huazhong University of Science and Technology
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Three-dimensional, hollow-structured carbon sphere nanocomposites (N,S-hcs) doped with nitrogen and sulfur were prepared using a soft template approach followed by a high-temperature treatment. The synthesized N, S-hcs nanomaterials exhibited favourable catalytic activity for the oxygen reduction reaction (ORR) compared to carbon spheres doped solely with nitrogen (N-hcs), polypyrrole (PPY) solid nanoparticles and irregular fragments of polyaniline (PAN). These results demonstrated the co-doping of N/S and the relatively large surface area of the mesoporous carbon structure that enhanced the catalytic activity of the resulting material. Notably, the prepared N, S-hcs electrocatalysts provided four electron oxygen reduction selectivity, long-term durability and high resistance to methanol poisoning, all of which represented improvements over the conventional Pt/C electrocatalyst. The progress represented by this reported work is of great importance in the development of outstanding non-metal based electrocatalysts for the fuel cell industry.
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