International Journal of Hydrogen Energy, Vol.36, No.13, 7683-7687, 2011
Easy sintering of silver doped lanthanum strontium manganite current collector for solid oxide fuel cells
A new system, (La(0.8)Sr(0.2))(1-x)Ag(x)MnO(3+delta)(LSAM, x <= 0.2), is developed as current collector for solid oxide fuel cell (SOFC). LSAM is prepared by a modified sal gel method and presents a single phase. The shrinkage temperature reduces from 1150 degrees C to 800 degrees C with an addition of 15 mol% Ag to La(0.8)Sr(0.2)MnO(3+delta) (LSM20). The contact resistance between the current collector and the cathode is measured, and the influence of Ag content on the contact resistance is investigated. The result shows that the contact resistance using (La(0.8)Sr(0.2))(0.85)Ag(0.15)MnO(3+delta) (LSAM15) as current collector is about 12 m Omega cm(2) at 750 degrees C, which is close to the value using expensive Pt paste as current collector. This new system is a promising current collecting material for the practical application of SOFC. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Keywords:Solid oxide fuel cell;Current collector;Contact resistance;Silver doped lanthanum strontium;manganite