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Solution Plasma Synthesis of Nitrogen-Doped Carbon Nanoballs as Effective Metal-Free Electrocatalysts for Oxygen Reduction Reaction

Published online by Cambridge University Press:  18 March 2014

Gasidit Panomsuwan ,
Satoshi Chiba ,
Nagahiro Saito  and
Takahiro Ishizaki
Gasidit Panomsuwan
Affiliation:
Department of Material Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
Satoshi Chiba
Affiliation:
Department of Material Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
Nagahiro Saito
Affiliation:
Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan JST CREST, 4-1-8 Honcho, Kawaguchi, Saitama 333-001, Japan
Takahiro Ishizaki
Affiliation:
Department of Material Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan JST CREST, 4-1-8 Honcho, Kawaguchi, Saitama 333-001, Japan
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Abstract

Nitrogen-doped carbons nanoballs were synthesized from an organic liquid precursor (a mixture of benzene and pyrazine) by solution plasma process. After synthesis, they were further annealed at 700 and 900 °C under N2 atmosphere. The nitrogen-doped carbon nanoballs before and after thermal annealing process exhibit a similar morphological feature, and their diameters are in the range between 20 and 40 nm. With higher annealing temperature, the graphitization of the nitrogen-doped carbon nanoballs increases. For the electrocatalytic activity in an alkaline solution, the limiting current density and onset potential for the ORR activity can be significantly improved for the samples after thermal annealing at 900 °C. We anticipate that solution plasma process will be a viable alternative way for synthesizing heteroatom-doped carbon electrocatalysts for broad application in the field of fuel cells, metal-air batteries, and supercapacitors.

Keywords

catalyticnanoscaleenergy storage
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1641: Symposium AA – Catalytic Nanomaterials for Energy and Environment , 2014 , mrsf13-1641-aa03-19
Copyright
Copyright © Materials Research Society 2014 

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