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Electrocatalytic activity of non-precious metal catalyst Co-N/C toward oxygen reduction reaction |
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| Authors: | Yu Jun Si Chang Guo Chen Wei Yina Hui Caia a College of Chemistry Chemical Engineering Chongqing University Chongqing China b College of Chemistry Pharmaceutical Engineering Sichuan University of Science Engineering Zigong China c The Key Laboratory for the Exploitation of Southwest Resources Environmental Disaster Control Engineering under Ministry of Education China |
| Institution: | a College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;b College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;c The Key Laboratory for the Exploitation of Southwest Resources and Environmental Disaster Control Engineering under Ministry of Education, Chongqing University, Chongqing 400044, China |
| Abstract: | Metallic cobalt was deposited on acetylene black to synthesize a composite Co/C by chemical reduction method. A platinum-free electrocatalyst Co-N/C(800) for oxygen reduction reaction (ORR) was synthesized by mixing the composite Co/C with urea and heat-treating at 800 ℃. The results from linear sweep voltammograms indicated that the Co-N/C(800) is active to ORR. The β-Co and cobalt oxides are not the active site of the catalyst Co-N/C. However, the existence of cobalt facilitated the modification of nitrogen to carbon black and led to the formation of active site of catalyst Co-N/C(800). |
| Keywords: | Oxygen reduction reaction Electrocatalyst Non-precious metal Active site |
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