Ni-O4 species anchored on N-doped graphene-based materials as molecular entities and electrocatalytic performances for oxygen reduction reaction |
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| Institution: | 1. Key Laboratory of Applied Chemistry, Department of Environmental and Chemical Engineering, Yanshan University, No. 438 Hebei Street, Qinhuangdao 066004, PR China;2. School of Materials Science and Engineering, Tianjin Chengjian University, 300384 Tianjin, PR China;3. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China;1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China;2. Institute of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China;3. Qingdao Collaborative Innovation Center of Marine Science and Technology, Ocean University of China, Qingdao, 266100, China;1. Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China;2. Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China;1. Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, NL, The Netherlands;2. Philips Lighting Innovation Labs – Material Analysis, High Tech Campus, Eindhoven, The Netherlands |
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| Abstract: | The generation of molecular active species on the surface of nano-materials has become promising routes to produce efficient electrocatalysts. Development of cost-effective catalysts with high performances for oxygen reduction reaction (ORR) is an important challenge for fuel cell and metal-air battery applications. In this work, we report a novel hybrid produced by room-temperature solution processes using Ni-based organometallic molecules and N-doped graphene-based materials. Chemical and structural characterizations reveal that Ni-containing species are well-dispersed on the surface of graphene network as molecular entity. The hybrid shows excellent electrocatalytic performances for ORR in basic medium with an onset potential of 0.87 V (vs. RHE), superior durability and good methanol tolerance. |
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| Keywords: | Oxygen reduction reactions Electrocatalysts Graphenes Nickel |
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