科研之友
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摘要
Egg-white protein as one of native proteins contains abundant nitrogen and can be obtained with abundant and inexpensive. Herein, we reported that a novel non-noble metal electrocatalyst for oxygen reduction reaction (ORR) was fabricated by thermal treatment of the precursor (including egg-white protein as the direct nitrogen source, FeCl3 center dot 6H(2)O as the metal source and pretreated carbon black as the support) under an inert atmosphere. The voltammetric methods were used to evaluate the oxygen reduction reaction catalytic activity, stability and methanol-tolerant performance of the catalyst. The structural property of the catalyst was also investigated by X-ray diffraction. The results show that the catalyst achieved at 800 degrees C has good activity, high methanol-tolerant and long-term stability. The metal content in this catalyst plays a critical role in improving the oxygen reduction reaction activity. An important finding is the Fe and its oxides are not the catalytically active sites for the oxygen reduction reaction, and their existence may facilitate the formation of the oxygen reduction reaction-active sites only. Besides, the activated amorphous-carbon is also found.
- 出版日期2014-5
- 单位重庆大学; 重庆文理学院
