DGIST Scholar: Preparation of cost-effective Pt-Co electrodes by pulse electrodeposition for PEMFC electrocatalysts

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Preparation of cost-effective Pt-Co electrodes by pulse electrodeposition for PEMFC electrocatalysts

Title: Preparation of cost-effective Pt-Co electrodes by pulse electrodeposition for PEMFC electrocatalysts

Author(s): Woo, Seunghee ; Kim, In ; Lee, Jae Kwang ; Bong, Sungyool ; Lee, Jaeyoung ; Kim, Hasuck

Author Keywords: Platinum-cobalt cathode catalyst ; Galvanostatic pulse electrodeposition ; Cost-effective electrocatalyst ; Proton exchange membrane fuel cell

Keywords: ACTIVITY-STABILITY RELATIONSHIPS ; ALLOY CATALYSTS ; Carbon Electrode ; CARBON LAYER ; Carbon Layers ; CATHODE CATALYST ; Cathodes ; Co Catalysts ; Cobalt ; Cost-Effective Electrocatalyst ; Cost Effectiveness ; Electrocatalysts ; Electrodeposition ; ELECTROREDUCTION ; FE ; Galvanostatic Pulse ; GALVANOSTATIC PULSE ELECTRODEPOSITION ; LOADING ELECTRODES ; Low Loading ; MemBRANE FUEL-CELLS ; MemBRANES ; NAFION ; Oxygen Reduction ; Pemfc Electrocatalyst ; PERFORMANCE ; Platinum ; Platinum-Cobalt Cathode Catalyst ; Platinum Alloys ; Proton Exchange Membrane Fuel Cell ; Proton Exchange Membrane Fuel Cells (PemFC) ; Protons ; PULSE ELECTRODEPOSITION ; SINGLE CELLS ; Sodium ; Solid Oxide Fuel Cells (SOFC)

Abstract: Low loading platinum-cobalt (Pt-Co) cathode catalyst on a Nafion(Na +)-bonded carbon layer is fabricated by using galvanostatic pulse technique to show the advantage of electrodeposition for high utilization of catalyst in proton exchange membrane fuel cell (PEMFC). We observed that Pt-Co catalysts evenly exist on the surface of carbon electrode and its thickness is about 5.8 μm, which is four times thinner than conventional Pt/C. Improved single cell power performance of Pt-Co cathode catalysts with a ratio of 3.2:1 compared with Pt/C is clearly presented. © 2011 Elsevier Ltd. All rights reserved.