[OFER-TRABEC] NAC: Beca para estudio de materiales cer=?ISO-8859-1?Q?=C3=A1micos?=

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---Procedencia:
Institución:Universidad de Sevilla
Contacto correo-e:melendo@us.es
---
OFERTA DE BECA PARA TESIS DOCTORAL – ÉCOLE CENTRALE PARIS

Title:
Study of novel proton conductors for High temperature pressurized electrolysis cells
Field:
Materials for Solid Oxide Cells, hydrogen production, proton conductors

Context and objective:
Hydrogen will play a more and more important role in a near future for energy applications. Its production, based at 95% on hydrocarbon resources, is still a problem in a general context of low carbon emissions. One of the most promising route for hydrogen production is the water electrolysis coupled to heat sources and clean electricity production. Nevertheless, their main limitation lies in their efficiency losses with time or their breaking under temperature cycling. To explain this degradation, the evolution of mechanical properties play a central role. For now, very few studies have been performed that allow the testing of mechanical properties in real working conditions. Recently, the test of mechanical properties under controlled atmosphere have been developed at Univ. of Sevilla. Parallely, the SPMS lab. at Ecole Centrale Paris has been working on the synthesis of dense nanostructured ceramics and on the measurement of their ion conduction properties. The objective is
to synthesize and study the evolution of electro-mechanical properties of materials for high temperature Solid Oxide Cells.

Work:
After choosing several compositions adapted to the application, the PhD student will prepare nanosized powder samples through chemical routes (freeze-drying, hydrothermal) and then obtain dense ceramics through classical or Spark Plasma Sintering. Hydration and transport properties will be determined respectively by thermogravimetry and impedance spectroscopy in controlled atmosphere. The student will also participate to the building of a measuring cell that will allow to determine electro-mechanical properties as a function of mechanical strain and controlled atmosphere.
The thesis will be done (and co-supervised) in close collaboration with Prof. Manuel Jímenez-Melendo at University of Sevilla.

Skills:
Materials science, Mechanical properties, Ceramics. Master,
Laboratory: Lab. Structures, Propriétés et Modélisation des Solides, Ecole centrale Paris
Supervisor: Guilhem DEZANNEAU, guilhem.dezanneau@ecp.fr
Co-Supervisor: Manuel MELENDO JIMENEZ, melendo@us.es
PhD grant: The salary is of 1374 €/month net (+277€/month if teaching).

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Información complementaria de la oferta:
CONTACTAR CON PROF. MANUEL JIMÉNEZ MELENDO (melendo@us.es
Departamento de Física de la Materia Condensada
Universidad de Sevilla

LÍMITE: 15 MARZO 2014

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