Study Of Non-Equilibrium Condensation In A Pulsed Plasma, Of The Flow And Self-Organization Of Platinum Nano-Catalysts Used For The Oxidation Of Hydrogen
Universities and Institutes of France
22 May 2023
Job InformationOrganisation/Company
UNIVERSITE D'ORLEANS
Department
GREMI
Research Field
Engineering » Process engineering
Engineering » Materials engineering
Physics » Applied physics
Physics
Researcher Profile
First Stage Researcher (R1)
Country
France
Application Deadline
9 Jun 2023 - 23:59 (Europe/Paris)
Type of Contract
Temporary
Job Status
Full-time
Is the job funded through the EU Research Framework Programme?
Not funded by an EU programme
Is the Job related to staff position within a Research Infrastructure?
No
Offer DescriptionThis thesis aims to design multimetallic nano-catalysts for hydrogen oxidation using a magnetron plasma confined in a condensation source.
This thesis will be carried out within the general framework of the PEPR PEMFC95 project which aims to meet the needs of heavy mobility (trains, trucks, buses) requiring proton exchange membrane fuel cells (PEMFC) capable of delivering higher powers than with current systems, while being more durable and less expensive. This project aims to meet these objectives by developing PEMFCs that can operate at a stabilized temperature of 95°C (compared to 80°C in current systems). This rise in temperature should also make it possible to supply the PEMFCs with less pure hydrogen with an equivalent yield.
The first objective will be to control the growth and organization of nano- catalysts based on the understanding of the involved phenomena and the use of pulsed plasma to finely adjust the different stages of growth and relaxation. The growth mechanisms of these nanoalloys in the plasma will be investigated by combining experiments (operando and ex-situ) with theoretical models.
The second objective will be to study and control the organization of these nanoparticles on the substrate by promoting self-organization phenomena. For this, a particular attention will be paid to the electrical charges of the nanoparticles and to the plasma-nanoparticle interactions (+ nanoparticle- substrates) in order to see to what extent these properties coupled with a functionalization of the substrate surface can induce self-organization on surface, possibly activated (thermal post-treatment or laser irradiation).
Finally, the third part will concern the characterization of multi-metallic electro-catalysts with respect to the oxidation of hydrogen in the presence of impurities with the support of GREMI partner laboratories. All along the thesis, the candidate must pay a particular attention to the greenhouse gas emissions emitted by his research activity.
This thesis will be directed by Maxime MIKIKIAN (GREMI) and co-supervised by Amaël CAILLARD (GREMI) and Pascal ANDREAZZA (ICMN)
RequirementsResearch Field
Engineering » Process engineering
Education Level
Master Degree or equivalent
Research Field
Engineering » Materials engineering
Education Level
Master Degree or equivalent
Research Field
Physics » Applied physics
Education Level
Master Degree or equivalent
Skills/Qualifications
The candidate has a background in low-temperature plasma physics or/and in materials science. He or she will have a strong taste for experimental sciences and will have to use or develop methods of diagnostic for both the plasma phase and the designed materials. The candidate will use commercial softwares or will develop codes to analyze the experimental data. Theoretical approaches will also be required in order to validate and explain the experimental results.
Languages
ENGLISH
Level
Good
Languages
FRENCH
Number of offers available
1
Company/Institute
GREMI
Country
France
City
Orléans
Postal Code
45067
Street
14 rue d'Issoudun
City
Orléans
Website
https:// www. univ-orleans.fr/gremi
Street
Château de la Source, Avenue du Parc Floral
Postal Code
45067
STATUS: EXPIRED