Fabrication of a nitrogen-doping carbon-based catalyst towards oxygen reduction reaction using ammonia as a single nitrogen source

作者：Si, Yujun^*; Xiong, Zhongping; Li, Minjiao; Sun, Li; Yi, Yuan

来源：Journal of the Ceramic Society of Japan, 2017, 125(1): 32-35.

DOI：10.2109/jcersj2.16150

• Oxygen reduction reaction
• Nitrogen-doping carbon catalyst
• Ammonia
• Special reactor

In this work, a nitrogen-doping carbon-based catalyst to oxygen reduction reaction (ORR) is fabricated by using ammonia as single nitrogen source. The catalyst is characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The catalytic activity to ORR is tested by electrochemical linear sweep voltammetry. The results show that the cobalt ions are reduced to metallic cobalt by acetylene black at high temperature. The metallic cobalt further facilitates the reaction between ammonia and acetylene black to form pyridinic and pyrollic C-N structures as the active sites of the catalyst to ORR. A better catalyst with an ORR onset potential of 0.69 V (vs. reversible hydrogen electrode) can be obtained at 600 degrees C for 120 min.

• 出版日期2017-1
• 单位四川轻化工大学