Porous Ag-CGO cermets as anode materials for IT-SOFC using CO fuel
Journal
Fuel Cells Bulletin
Journal Volume
2008
Journal Issue
5
Pages
12-16
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 (IT-SOFCs) using Ce0.8Gd0.2O1.9 (CGO) electrolyte. Porous CGO was prepared by leaching MgO from MgO-CGO ceramics with acetic acid and then impregnating with AgNO3 solution. Porous cermet that contained 45 wt% Ag with the optimal porosity of 48% was a promising anode material for IT-SOFCs using CO as the fuel. It yielded an electrical conductivity of 1260 S/cm at 650°C and a CO oxidation rate of 0.6 mmol/min gcat, and it was catalytically stable under reaction conditions for 50 h with negligible carbon deposition. © 2008 Elsevier Ltd. All rights reserved.
Type
journal article