Electrochemical performance of a novel CoTETA/C catalyst for the oxygen reduction reaction |
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Authors: | Hui-Juan Zhang Xianxia Yuan Wen Wen Dong-Yun Zhang Liangliang Sun Qi-Zhong Jiang Zi-Feng Ma |
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Institution: | 1. Department of Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China;2. Brookhaven National Laboratory, Upton, NY 11973, USA;3. School of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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Abstract: | In this communication, we report a novel CoTETA/C catalyst for the oxygen reduction reaction (ORR) which was prepared from a carbon-supported cobalt triethylenetetramine chelate, followed by heat treatment in an inert atmosphere. Electrochemical performances were measured using rotating disk electrode (RDE) technique and a PEM fuel cell test station. For a H2–O2 fuel cell system, the maximum output power density reached 162 mW cm?2 at 25 °C with non-humidified reaction gases. We found a nanometallic face-centered cubic (fcc) α-Co phase embedded in the graphitic carbon after pyrolysis, based on X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) measurements. These results indicated that CoTETA/C is a promising catalyst for the ORR. |
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