Studies on the Reduction Mechanism of Oxygen on Ag/C Catalysts in Alkaline Solutions-Reference-Cited by-同舟云学术

Studies on the Reduction Mechanism of Oxygen on Ag/C Catalysts in Alkaline Solutions

Published:2013-09-13 Issue:6 Volume:10 Page:
ISSN:1550-624X
Container-title:Journal of Fuel Cell Science and Technology
language:en
Short-container-title:

Author:

Han Jia-Jun¹,Liu De-Li²,Geng Lin¹

Affiliation:

1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

2. School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China

Abstract

Carbon-supported silver (Ag/C) catalysts with different Ag contents are prepared using the Ag (I) coordination polymer, [Ag(C7H6NO2)(C6H12N4)(H2O)]n. The mechanism and activity of the oxygen reduction reaction (ORR) on these Ag/C catalysts are investigated by the cyclic voltammetry and the rotating ring disk electrode (RRDE) in alkaline solutions. The test results indicate that, under the same Ag crystallite sizes, the activities increase with increasing Ag contents from 5 to 20 wt.% and the ORR proceeds by a four-electron pathway on Ag/C catalysts, but with decreasing Ag contents, the ORR is catalyzed via the four-electron pathway and the two-electron pathway simultaneously.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials

Link

http://asmedigitalcollection.asme.org/electrochemical/article-pdf/doi/10.1115/1.4025055/6130102/fc_010_06_061004.pdf

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