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Carbon-Supported Silver as Cathode Electrocatalyst for Alkaline Polymer Electrolyte Membrane Fuel Cells

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Abstract

Carbon-supported silver in varying percentage viz. 40%, 60%, and 80% (Ag/C) is prepared by sodium citrate protecting method. The structure, dispersion, electrochemical characterization, and surface area and oxygen reduction reaction pathway of Ag/C are determined by XRD, TEM, CV, and LSV, respectively. The catalyst is evaluated for its electrocatalytic activity towards oxygen reduction reaction (ORR) in alkaline polymer electrolyte membrane fuel cells (APEMFCs); 60% Ag/C gives higher performance than 40%, and 80% Ag/C. Metal loading on cathode is optimized through the cell polarization studies using 60% Ag/C. A peak power density of 10 mW/cm2 is obtained for APEMFC single cell comprising 60% Ag/C and 38% Pt/C as cathode and anode catalysts, respectively.

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Acknowledgments

Financial support from CSIR, New Delhi through a supra-institutional project under XI Five Year Plan is gratefully acknowledged. S. Maheswari is grateful to CSIR, New Delhi, for a Senior Research Fellowship.

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Authors and Affiliations

  1. CSIR—Central Electrochemical Research Institute, Madras Unit, CSIR Complex, Chennai, 600 113, India

    Subbiah Maheswari, Parthasarathi Sridhar & Sethuraman Pitchumani

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  1. Subbiah Maheswari
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  2. Parthasarathi Sridhar
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  3. Sethuraman Pitchumani
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Correspondence to Parthasarathi Sridhar.

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Maheswari, S., Sridhar, P. & Pitchumani, S. Carbon-Supported Silver as Cathode Electrocatalyst for Alkaline Polymer Electrolyte Membrane Fuel Cells. Electrocatal 3, 13–21 (2012). https://doi.org/10.1007/s12678-011-0071-0

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