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Investigation into the improved dispersion of nickel oxide over the surface of SOFC tubular anodes

Taylor, Scott (2010)
M.Res. thesis, University of Birmingham.

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Abstract

Issues with nickel agglomeration and reduced porosity of SOFC anode tubes have been noted in previous investigations using carbon black as a porosity forming agent, this thesis looks at methods of improving these issues by investigation of alternative materials (carbon, graphite, flour) along with alternative processing methods. The porosity forming agent of the SOFC anode was investigated to establish the most effective material to improve nickel dispersion. The effect of powder processing by milling to improve mixing and particle size distribution within the anode mixture before extrusion and sintering was also investigated. Powder processing by means of milling was seen to offer significant improvements in dispersion of nickel over the surface of tubes, along with a distinct improvement in the porosity of the sintered tubes. Of the three porosity forming agents investigated wheat flour offered the best solution to the issues of nickel dispersion and increasing tube porosity, it was also found to be the easiest material to process and form into tubes.

Type of Work:M.Res. thesis.
Supervisor(s):Blackburn, Stuart
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Chemical Engineering
Subjects:TP Chemical technology
Institution:University of Birmingham
ID Code:875
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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