Effect of Cobalt Loading in Nitrogen-Doped Carbon on Oxygen Reduction Reaction for PEM Fuel Cells

Sheng Zhou Chen; Wei Yang; Liang Wei Li; Han Bo Zou; Wei Ming Lin

doi:10.4028/www.scientific.net/AMR.557-559.1218

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 557-559Effect of Cobalt Loading in Nitrogen-Doped Carbon...

Effect of Cobalt Loading in Nitrogen-Doped Carbon on Oxygen Reduction Reaction for PEM Fuel Cells

Abstract:

Nitrogen-doped carbon supported Co catalysts (CoNC) were synthesized via condensation reaction of pre-polymer of melamine formaldehyde resin with addition of cobalt nitrate salt, followed by carbonization in nitrogen. Rotating disk electrode technique (RDE) and scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDS) were used to identify the structure and oxygen reduction reaction (ORR) kinetics of the catalysts. The results show that the catalysts with 3.77 wt% Co loading yield the best ORR catalytic activity. Koutecky-Levich plots indicate ORR mechanism is governed by mixed mechanisms and the measured electron number varies between 2 and 4. SEM image shows an irregular lamellar structure of CoNC catalyst formed at high temperature, and different Co loadings in CoNC catalyst do not change its surface morphology.

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Advanced Materials Research (Volumes 557-559)

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1218-1222

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.557-559.1218

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Online since:

July 2012

Authors:

Sheng Zhou Chen, Wei Yang, Liang Wei Li, Han Bo Zou, Wei Ming Lin

Keywords:

Cobalt Loading, Co-NC, Oxygen Reduction Reaction, Proton Exchange Membrane Fuel Cell

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