X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography

No Thumbnail Available
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal

Other link related to publication
Date
2019-10-15
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-8
Series
Journal of Power Sources
Abstract
We have constructed a 5 cm2 proton exchange membrane hydrogen fuel cell optimized for transparency of high energy X-rays. This cell allows for in situ elastic scattering measurements (WAXS, SAXS) during electrochemical operation with minimal trade-offs in cell performance vs benchtop designs, and is capable of reaching automotive current densities. A key feature is that the beam enters the cell at grazing incidence to the electrodes, massively increasing the effective pathlength and therefore the signal-to-background ratio. The 360∘ transparency in the plane of the sample permits imaging coupled with advanced techniques, such as X-ray diffraction computed tomography.
Description
| openaire: EC/H2020/679933/EU//MEMERE
Keywords
PEMFC, Tomography, X-ray scattering, XRD-CT
Other note
Citation
Martens , I , Vamvakeros , A , Chattot , R , Blanco , M V , Rasola , M , Pusa , J , Jacques , S D M , Bizzotto , D , Wilkinson , D P , Ruffmann , B , Heidemann , S , Honkimäki , V & Drnec , J 2019 , ' X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography ' , Journal of Power Sources , vol. 437 , 226906 , pp. 1-8 . https://doi.org/10.1016/j.jpowsour.2019.226906