Scientific direction Development of key enabling technologies
Transfer of knowledge to industry

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Technological challenges >> Advanced nano characterization
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Electron tomography for 3D characterization of Fuel Cell Electrodes

Département des Technologies des NanoMatériaux (LITEN)

Laboratoire de Nanocaractérisation et Nanosécurité

01-09-2020

PsD-DRT-20-0099

laure.guetaz@cea.fr

Context: The objective of this post doc work is to characterize in 3D the microstructure of proton exchange membrane fuel cell (PEMFC) electrodes. These electrodes are composed of carbon grains (30 nm) supporting Pt nanoparticles (4 nm) and linked together by an ionomer (proton conducting polymer). Currently, little information is known about the 3D distribution of the ionomer, although it is a key parameter that the electrode manufacturers seek to optimize in order to improve the performance and the durability of PEMFC. The success of this work could have a strong impact in the fuel cell community. The work of the post doc researcher will mainly focus on: - Electron tomography experiments, - Sample preparation by ultramicrotomy or FIB, - 3D image reconstruction combining the different techniques,

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