Metallic interconnectors for solid oxide fuel cells – a review

The Superior Properties of La0.6Ba0.4CoO3-δThin Film Electrodes for Oxygen Exchange in Comparison to La0.6Sr0.4CoO3-δ

“…[1][2][3] Despite all its benefits, SOFC technology is also demanding and a lot of efforts have been made over the past decades to optimize important key factors for commercialization such as durability, manufacturing cost and modularization. [4][5][6][7] The simplest approach to increase long term stability of SOFC systems is to lower the operating temperatures in order to avoid unfavorable side reactions of different components. 8 However, a temperature decrease also lowers the kinetics of processes exhibiting high activation energies, especially the oxygen reduction reaction (ORR).…”

Morphology Analysis of the Scale Formed on Crofer 22APU Steel in Atmospheres Containing SO2

“…8) that in the area of the scale outer surface identified sulphur is always accompanied by Mn and O 2 . Mn quickly diffuses through the scale layer (probably by grain boundary) [9][10][11] and on the surface it reacts with SO 2 forming MnS and MnO in accordance with the reaction (6). 3Mn þ SO 2 !…”

“…The spinel MnCr 2 O 4 is thermodynamically stable under such conditions and one should not assume that sulphur coming from the dissociation of sulphur dioxide and/or a sulphur dioxide could enter into reactions with it forming chromium sulphide and manganese sulphide. Also oxides of these metals cannot form sulphides according to the reactions below (4,5), because for 1073 K, DG o [ 0 (all DG o values in this paper were calculated using FactSage program with thermodynamically data bases [8]). (Fig.…”

“…The research works [3][4][5] on the behaviour of the steel of Crofer 22APU type at high temperatures proved that a large number of factors influence the rate of oxidation of Crofer 22APU steel, such as the composition of the atmosphere, temperature, surface treatment and the thickness of samples. The authors of this work conducted research works on the behaviour of Crofer 22APU steel in the atmosphere of air and of air containing SO 2 .…”

Oxidation Kinetics of Crofer 22APU Steel in an Atmosphere Containing SO2

“…As follows from Table 1, chromium is the dominant alloy additive. The amounts of minor alloy additives of Al and Si are present because they improved the scale adhesion [5,7].…”