Research Paper

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

[+] Author and Article Information
Jia-Jun Han, Lin Geng

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

De-Li Liu

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

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received May 16, 2013; final manuscript received July 15, 2013; published online September 13, 2013. Editor: Nigel M. Sammes.

J. Fuel Cell Sci. Technol 10(6), 061004 (Sep 13, 2013) (4 pages) Paper No: FC-13-1053; doi: 10.1115/1.4025055 History: Received May 16, 2013; Revised July 15, 2013

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.

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Wiberg, G. K. H., Mayrhofer, K. J. J., and Arenz, M., 2010, “Investigation of the Oxygen Reduction Activity on Silver—A Rotating Disc Electrode Study,” Fuel Cells, 10(4), pp. 575–581. [CrossRef]
Kucernak, A., Bidault, F., and Smith, G., 2012, “Membrane Electrode Assemblies Based on Porous Silver Electrodes for Alkaline Anion Exchange Membrane Fuel Cells,” Electrochim. Acta, 82, pp. 284–290. [CrossRef]
Lu, Y. Z., and Chen, W., 2012, “Size Effect of Silver Nanoclusters on Their Catalytic Activity for Oxygen Electro-Reduction,” J. Power Sources., 197(1), pp. 107–110. [CrossRef]
Garcia, A. C., Gasparotto, L. H. S., Gomes, J. F., Tremiliosi-Filho, G., 2012, “Straightforward Synthesis of Carbon-Supported Ag Nanoparticles and Their Application for the Oxygen Reduction Reaction,” Electrocatalysis, 3, pp. 147–152. [CrossRef]
Yi, Q. F., and Song, L. H., 2012, “Polyaniline-Modified Silver and Binary Silver-Cobalt Catalysts for Oxygen Reduction Reaction,” Electroanalysis, 24, pp. 1655–1663. [CrossRef]
Alia, S. M., Duong, K., Liu, T., Jensen, K., and Yan, Y., 2012, “Supportless Silver Nanowires as Oxygen Reduction Reaction Catalysts for Hydroxide-Exchange Membrane Fuel Cells,” ChemSusChem, 5(8), pp. 1619–1624. [CrossRef] [PubMed]
Kostowskyj, M. A., Gilliam, R. J., and Kirk, D. W., 2008, “Silver Nanowire Catalysts for Alkaline Fuel Cells,” Int. J. Hydrogen Energy, 33, pp. 5773–5778. [CrossRef]
Lima, F. H. B., Sanches, C. D., and Ticianelli, E. A., 2005, “Physical Characterization and Electrochemical Activity of Bimetallic Platinum-Silver Particles for Oxygen Reduction in Alkaline Electrolyte,” J. Electrochem. Soc., 152, pp. A1466–A1473. [CrossRef]
Demarconnay, L., Coutanceau, C., and Leger, J. M., 2004, “Electroreduction of Dioxygen (ORR) in Alkaline Medium on Ag/C and Pt/C Nanostructured Catalysts—Effect of the Presence of Methanol,” Electrochim. Acta, 49, pp. 4513–4521. [CrossRef]
Coutanceau, C., Demarconnay, L., and Lamy, C., 2006, “Development of Electrocatalysts for Solid Alkaline Fuel Cell (SAFC),” J. Power Sources, 156, pp. 14–19. [CrossRef]
Guo, J. S., Hsu, A., and Chu, D., 2010, “Improving Oxygen Reduction Reaction Activities on Carbon-Supported Ag Nanoparticles in Alkaline Solutions,” J. Phys. Chem., 114, pp. 4324–4330.
Yang, Y. F., Zhou, Y. H., and Cha, C. S., 1995, “Improving Oxygen Reduction Reaction Activities on Carbon-Supported Ag Nanoparticles in Alkaline Solutions,” Electrochim. Acta, 40, pp. 2579–2586. [CrossRef]
Han, J. J., and Li, N., 2007, “Catena-Poly[[(2-Amino-3,5-Dimethylbenzenesulfonato-κO)Silver(I)]-μ-1-1’-(Butane-1,4-diyl)Diimidazole-κ2N3:N3′],” Acta Crystallogr., Sect. E: Struct. Rep. Online, E63, pp. M1622–M1633. [CrossRef]
Han, J. J., Li, N., and Liu, D. L., 2009, “Preparation of Ag/C Catalysts for the O2 Electrode by the Ag(I) SCRM,” Mater. Chem. Phys., 115, pp. 685–689. [CrossRef]
Han, J. J., Li, N., and Zhang, T. Y., 2009, “Ag/C Nanoparticles as an Cathode Catalyst for a Zinc-Air Battery With a Flowing Alkaline Electrolyte,” J. Power Sources, 193, pp. 885–889. [CrossRef]
Han, J. J., Zhang, T. Y., and Geng, L., 2010, “Catena-Poly[[(4-Aminobenzoato) aquasilver(I)]-μ-Hexamethylenetetramine],” Acta Crystallogr., Sect. E: Struct. Rep. Online, 66, pp. M111–U277. [CrossRef]
Jiang, R. Z., and Anson, F. C., 1991, “The Origin of Inclined Plateau Currents in Steady-State Voltammograms for Electrode Processes Involving Electrocatalysis” J. Electroanal. Chem.305, pp. 171–184. [CrossRef]


Grahic Jump Location
Fig. 1

SEM images of (a) 20-, (b) 10-, and (c) 5-wt.% Ag/C catalysts

Grahic Jump Location
Fig. 2

XRD patterns of (a) 20-, (b) 10-, and (c) 5-wt.% Ag/C catalysts and (d) Vulcan-XC 72R carbon

Grahic Jump Location
Fig. 3

Cyclic voltammetries of (a) 20-, (b) 10-, and (c) 5-wt.% Ag/C catalysts

Grahic Jump Location
Fig. 4

Polarization curves of the oxygen reduction on (a) 20-, (b) 10-, and (c) 5-wt.% Ag/C catalysts

Grahic Jump Location
Fig. 5

Levich plots of the oxygen reduction on (a) 20-, (b) 10-, and (c) 5-wt.% Ag/C catalysts



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