The Fuel Cells and Solid State Chemistry Division at Risø DTU is seeking a Ph.D. student to develop improved electrochemical devices for the energy system of the future.
Many electrochemical devices are multilayered structures; examples include fuel cells, electrolysers and gas separation membranes. According to the application, the single layers may vary in 1) thickness from 5 microns to a few millimeters, 2) microstructure from highly porous to gas tight and 3) composition from metal to ceramic. These multilayered structures can be shaped using commercially viable shaping techniques such as tape casting or screen printing to form individual layers from a suspension consisting of nano- to micron-sized particles, followed by stacking of the layers. The multilayered structures are then sintered at high temperatures. The suspension composition and properties, as well as the shaping and sintering parameters of the multilayer determine the resulting microstructure. Therefore, it is very important to understand the underlying physics, chemistry and thermodynamics in each step of processing and its impact on the microstructure.
The project will focus on a 500 µm thick metal single porous layer and its challenging combination with a dense ceramic or metallic layer, which is of interest for both fuel cells and gas separation membranes. To achieve this, the different parameters influencing the micro- and macrostructures will be tested, understood and optimised; these parameters include the powder composition and fabrication route, the suspension composition and properties, and the different variables and mechanisms influencing the heat treatment.
- Education as a chemist, engineer, materials scientist, physicist, or equivalent
- Ability to work independently, to plan and carry out complicated tasks, and to be a part of a large, dynamical group
- Good communication skills in English, both written and spoken
We offer an exciting and challenging job in an international environment with good possibilities for professional and personal growth. Risø DTU is a family friendly organisation with flexible working hours.
Terms of employment
The terms of employment will be in accordance with those of the scientific staff at Risø DTU. The PhD student has a fixed duration of 3 years. The place of work is Risø DTU in Roskilde.
We must have your online application by 25 January 2009. Please open the link “apply online” and fill in the application form and attach your application and CV.
Please contact Group Leader Severine Ramousse, +45 4677 5799, for further information.
Additional information about Risø DTU and the Fuel Cells and Solid State Chemistry Department can be found onwww.risoe.dtu.dk
Source : RISO