Porous Ag-CGO cermets as anode materials for ITSOFC using CO fuel
Journal
Catalysis Communications
Journal Volume
9
Journal Issue
7
Pages
1595-1599
Date Issued
2008
Author(s)
Abstract
A novel route was developed for preparing Ag-CGO porous cermets as the anode materials for intermediate-temperature solid oxide fuel cells (ITSOFCs) using Ce0.8Gd0.2O1.9(CGO) electrolyte. Porous CGO was prepared by leaching MgO from MgO-CGO ceramics with acetic acid and then impregnated with AgNO3 solution. Porous cermet that contained 45 wt% Ag with the optimal porosity of 48% was a promising anode material for ITSOFCs using CO as the fuel. It yielded an electrical conductivity of 1260 S cm-1 at 923 K and a CO oxidation rate of 0.6 mmol min- 1 gcat- 1, and it was catalytically stable under reaction condition for 50 h with negligible carbon deposition. © 2008 Elsevier B.V. All rights reserved.
Type
journal article