Effect of Annealing Temperature on Oxygen Reduction Reaction (ORR) Activity of Nitrogen and Sulfur Co-doped Mesoporous carbons
Qiaowei Tang, Fang Dong, Fengyuan Zhang, Jinli Qiao
Available Online April 2017.
- https://doi.org/10.2991/iceesd-17.2017.171How to use a DOI?
- Annealing temperature, oxygen reduction reaction, N and S co-doped, mesoporous carbons
- In this work, we have synthesized N and S co-doped mesoporous carbons as highly efficient electrocatalysts to investigate the influence of annealing temperatures on electrocatalytic activity of N and S co-doped mesoporous carbon for oxygen reduction reaction (ORR) in alkaline media. The catalysts were prepared through silica hard template method, thermal annealing of ferrous chloride (FeCl2 4H2O) and polyquaternium-46 (PQ) in nitrogen. Results of electrochemical characterizations for ORR were studied by cyclic voltammetry (CV) and linear sweep voltammetry (LSV) employing rotating disk electrode (RDE) technique. The peroxide yield (H2O2%) and electron transfer number (n) on the mesoporous carbon catalyzed electrode were investigated via the rotating ring-disk electrode (RRDE) experiments to study the ORR catalytic pathway of the catalysts. It is found that the temperature of the heat treatment is a significant parameter in synthesizing the high performance ORR catalysts. Of the three catalysts, FeCl2-PQ-800oC showed superior catalytic activity with onset potential at 0.965 V and half-wave potential at 0.807 V. The corresponding electron transfer number was greater than 3.81, indicating that the ORR process proceeds mainly via a four-electron mechanism.
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Cite this article
TY - CONF AU - Qiaowei Tang AU - Fang Dong AU - Fengyuan Zhang AU - Jinli Qiao PY - 2017/04 DA - 2017/04 TI - Effect of Annealing Temperature on Oxygen Reduction Reaction (ORR) Activity of Nitrogen and Sulfur Co-doped Mesoporous carbons BT - 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017) PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/iceesd-17.2017.171 DO - https://doi.org/10.2991/iceesd-17.2017.171 ID - Tang2017/04 ER -