Electrochemistry of Silver/Metal Oxide-based Catalysts on Carbon Support for Cathode Electrode of Reducing Sugar Alkaline Fuel Cells
Abstract
This study investigated the electrochemistry of silver/metal oxide-based catalysts on carbon support, AgVxOy/C, and AgMnxOy/C. In order to analyse the potential of catalysts in cathode electrodes for reducing sugar in alkaline fuel cell without an exchange membrane. The physical properties of the catalysts were investigated by scanning electron microscopy, and the quantity of elements in the catalysts was determined by energy dispersive x-ray spectroscopy. The electrochemical characteristics of the catalytic reduction reaction were measured by a cyclic voltammetry technique. It is found that in higher fuel concentrations the AgMnxOy/C catalyst had better catalytic activity than the AgVxOy/C catalyst. The maximum current density of the reduction peak for the AgMnxOy/C catalyst was -0.51 mA.cm-2 at -0.22 V. Although, the average particle size of AgMnxOy/C was larger than that of the AgVxOy/C catalyst.Keywords : alloy catalysts, cathode, reducing sugar, alkaline fuel cellsReferences
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catalyst for formic acid dehydrogenation: Effects of preparation methods and Ni/Pd ratios. RSC Advances, 8(5), 2441–2448.
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International Journal of Hydrogen Energy, 35, 5666–5672.
Lu, Y., Wang, Y., & Chen, W. (2011). Silver nanorods for oxygen reduction: Strong effects of protecting ligand on
the electrocatalytic activity. Journal of Power Sources, 196(6), 3033–3038.
Noori, Md. T., Mukherjee, C. K., & Ghangrekar, M. M. (2017). Enhancing performance of microbial fuel cell by
using graphene supported V2O5-nanorod catalytic cathode. Electrochimica Acta, 228, 513–521.
Santiago, O., Navarro, E., Raso, M., & Leo, T. J. (2016). Review of implantable and external abiotically catalysed
glucose fuel cells and the differences between their membranes and catalysts. Applied Energy, 179, 497–522.
Yu, X., & Manthiram, A. (2018). Scalable Membraneless Direct Liquid Fuel Cells Based on a Catalyst-Selective
Strategy. ENERGY & ENVIRONMENTAL MATERIALS, 1(1), 13–19.
Zhang, G.-Q., Zhang, X.-G., & Wang, Y.-G. (2004). A new air electrode based on carbon nanotubes and Ag–
MnO2 for metal air electrochemical cells. Carbon, 42(15), 3097–3102.
for microbial fuel cell applications. International Journal of Hydrogen Energy, 44(10), 4974–4984.
Brouzgou, A., & Tsiakaras, P. (2015). Electrocatalysts for Glucose Electrooxidation Reaction: A Review. Topics in
Catalysis, 58(18), 1311–1327.
Chakkrapong, C. (2016). Decrease of fuel cell performance caused by coolant leakage. Doctoral dissertation
Institute of Chemical Engineering and Environmental Technology. Austria : Graz University of Technology.
Ghoreishi, K. B., Ghasemi, M., Rahimnejad, M., Yarmo, M. A., Daud, W. R. W., Asim, N., & Ismail, M. (2014).
Development and application of vanadium oxide/polyaniline composite as a novel cathode catalyst in microbial fuel cell. International Journal of Energy Research, 38(1), 70–77.
Karim, N. A., & Kamarudin, S. K. (2013). An overview on non-platinum cathode catalysts for direct methanol fuel
cell. Applied Energy, 103, 212–220.
Kim, Y., Kim, J., & Kim, D. H. (2018). Investigation on the enhanced catalytic activity of a Ni-promoted Pd/C
catalyst for formic acid dehydrogenation: Effects of preparation methods and Ni/Pd ratios. RSC Advances, 8(5), 2441–2448.
Kostowskyj, M. A., Kirk, D., & Thorpe, S. (2010). Ag and Ag–Mn nanowire catalysts for alkaline fuel cells.
International Journal of Hydrogen Energy, 35, 5666–5672.
Lu, Y., Wang, Y., & Chen, W. (2011). Silver nanorods for oxygen reduction: Strong effects of protecting ligand on
the electrocatalytic activity. Journal of Power Sources, 196(6), 3033–3038.
Noori, Md. T., Mukherjee, C. K., & Ghangrekar, M. M. (2017). Enhancing performance of microbial fuel cell by
using graphene supported V2O5-nanorod catalytic cathode. Electrochimica Acta, 228, 513–521.
Santiago, O., Navarro, E., Raso, M., & Leo, T. J. (2016). Review of implantable and external abiotically catalysed
glucose fuel cells and the differences between their membranes and catalysts. Applied Energy, 179, 497–522.
Yu, X., & Manthiram, A. (2018). Scalable Membraneless Direct Liquid Fuel Cells Based on a Catalyst-Selective
Strategy. ENERGY & ENVIRONMENTAL MATERIALS, 1(1), 13–19.
Zhang, G.-Q., Zhang, X.-G., & Wang, Y.-G. (2004). A new air electrode based on carbon nanotubes and Ag–
MnO2 for metal air electrochemical cells. Carbon, 42(15), 3097–3102.
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2022-05-30
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บทความวิจัย จากงานประชุมวิชาการระดับชาติ "วิทยาศาสตร์วิจัย ครั้งที่ 12"
