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Développement de piles à combustible de type SOFC, conventionnelles et mono-chambres, en technologie planaire par sérigraphie

Abstract : This work is the first of of a new research theme of the laboratory in the field of solid oxide planar fuel cells. With his high experience in the sensor field, the objectives were to realise prototypes using a "low cost" technology like screen-printing, using classical materials in the field of fuel cells, rather than researching new materials having optimum properties which may be damaged during the realisation of the complete fuel cell. These materials are yttria stabilised zirconia (YSZ) for electrolyte, strontium doped lanthanum manganite(LSM) for cathode and a nickel oxide-YSZ cermet (NiO-Ysz) for anode.
The first part of the study consists in structural and electrical characterisations of chosen materials, both on dense pellets and on screen-printed layers of YSZ, LSM or NiO-YSZ. These characterisations showed a good adequation of our materials for a fuel cell applications.
The second part consists in testing realised prototypes on electrolyte support and on anode support with screen-printed electrodes and electrolyte. The weak obtained performances are mainly due to the low functional temperature (800°C), the thickness of the electrolyte support (about 1 mm) and the porosity of the YSZ screen-printed layers. Finally, we tested in the same time an original device in which both electrodes are exposed to a fuel and air mixture. This promising device inspired from the research on potentiometric sensors developed in the team by Nicolas Guillet (2001), avoids the tightness problem encountered with two gaseous chambers. Moreover, the performances obtained are just twice below than those obtained with a conventional fuel cell with two gaseous chambers.
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Submitted on : Wednesday, August 24, 2005 - 7:11:53 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:31 PM
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  • HAL Id : tel-00009968, version 1

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David Rotureau. Développement de piles à combustible de type SOFC, conventionnelles et mono-chambres, en technologie planaire par sérigraphie. Matériaux. Ecole Nationale Supérieure des Mines de Saint-Etienne, 2005. Français. ⟨tel-00009968⟩

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