Title: The Rheology of Stabilised Lanthanum Strontium Cobaltite Ferrite Nanopowders in Organic Medium Applicable as Screen Printed SOFC Cathode Layers
Authors : Burnat, Dariusz
Ried, P.
Holtappels, P.
Heel, Andre
Graule, T.
Kata, D.
Published in : Fuel Cells
Volume(Issue) : 10
Issue : 1
Pages : 156
Pages to: 165
Issue Date: 2010
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : LSCF; Nanoparticles; Rheology; Screen Printing; Solid Oxide Fuel Cells (SOFC)
Subject (DDC) : 621.3: Electrical engineering and electronics
660: Chemical engineering
Abstract: The production and optimisation of screen printing (SP) pastes containing La0.58Sr0.42Co0.21Fe0.79O3 - δ and La0.61Sr0.41Co0.19Fe0.79O3 - δ (LSCF) were investigated. The application of these nanopowders is supposed to improve the cathode's microstructure and increase its mechanical strength. Thirty seven pastes containing LSCF were carried out with variation in binders, dispersants and different particle size distribution. The rheological behaviour of these pastes was investigated. It was found that commercially available dispersant Solsperse 3000 resulted in the best suspension stability, achieving almost 55 times lower viscosity value for pastes containing 20 vol.-%, than pastes without any dispersants. The shear thinning behaviour was found to be favourable for the LSCF cathode deposition. A cathode made from the mixture of nano and submicron powder exhibits a polarisation resistance as low as 0.76 Ω cm2 at 592 °C.
Departement: School of Engineering
Organisational Unit: Institute of Materials and Process Engineering (IMPE)
Publication type: Article in scientific Journal
DOI : 10.1002/fuce.200900014
ISSN: 16156846
16156854
URI: https://digitalcollection.zhaw.ch/handle/11475/9269
Appears in Collections:Publikationen School of Engineering

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