Open AccessPerformance of a fuel cell optimized for in situ X‐ray absorption experiments
Author(s) -
Principi Emiliano,
Di Cicco Andrea,
Witkowska Agnieszka,
Marassi Roberto
Publication year - 2007
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049507013593
Subject(s) - x ray absorption spectroscopy , synchrotron radiation , absorption (acoustics) , absorption spectroscopy , materials science , extended x ray absorption fine structure , optics , synchrotron , aperture (computer memory) , range (aeronautics) , diffraction , x ray , transmission (telecommunications) , electrode , analytical chemistry (journal) , physics , chemistry , computer science , telecommunications , chromatography , quantum mechanics , acoustics , composite material
A commercial fuel cell has been successfully modified to carry out X‐ray absorption spectroscopy (XAS) measurements under optimized in operando conditions. The design is conceived for the performance of XAS experiments in transmission mode over a wide range of X‐ray energies above 6 keV, owing to the reduced absorption of the cell. The wide angular aperture allows the collection of XAS in fluorescence mode and of X‐ray diffraction patterns when needed. Details of the design of the cell and its performances are given. The quality of the extended X‐ray absorption fine‐structure spectra under working conditions has been verified at the ESRF and ELETTRA synchrotron radiation facilities, showing that relatively fast and low‐noise transmission measurements on electrodes over a wide range of catalyst concentrations and energies are feasible.