A H2/O2 Fuel Cell for In situ μ-Raman Measurements. In-depth Characterization of an Ionic Liquid Filled Nafion Membrane
Journal article, 2012

We report the design of a H2/O2 (fuel) cell for in situ μ-Raman spectroscopic measurements. The horizontal orientation of the cell is conceived to allow the penetration of the laser beam along the z-axis from one electrode to the other. We show that during in-depth analyses the Raman signal is not significantly lost and the axial resolution is sufficiently good to allow quantitative and qualitative spectral interpretation. We report “proof of principle” tests performed on Nafion membranes swelled with protic ionic liquids to demonstrate the validity of the design and the potentiality of the method. Our results confirm that this experimental setup can efficiently be used to follow structural changes and concentration gradients in the electrolyte of a fuel cell operando. In particular, we have been able to resolve both in time and in space the hydration state of the membrane as well as spatial variations for the coordination shell during a compositional transient state.

Nafion

PEM Fuel Cell

In situ Characterization

Raman Spectroscopy

Protic Ionic Liquid

Author

Anna Martinelli

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Christina Iojoiu

Grenoble Alpes University

Nicolas Sergent

Grenoble Alpes University

Fuel Cells

1615-6846 (ISSN) 1615-6854 (eISSN)

Vol. 12 2 169-178

Subject Categories

Physical Chemistry

Other Materials Engineering

Condensed Matter Physics

Areas of Advance

Energy

Materials Science

DOI

10.1002/fuce.201100098

More information

Latest update

10/3/2023