TY - JOUR
T1 - A New Simultaneous Membrane Thickness and Catalyst Loading Measurement for Fuel Cell Proton-Exchange Assemblies by IR Transmission
T2 - Article No. 232601
AU - Green, Brian
AU - Rupnowski, Przemyslaw
AU - Mauger, Scott
AU - Ulsh, Michael
PY - 2023
Y1 - 2023
N2 - We present a study of mid-infrared (mid-IR) transmission through typical proton-exchange fuel cell and water electrolyzer catalyst-coated membrane materials, and the determination of membrane layer thickness, and catalyst layer loading, from the power of the transmitted beam. Measured membrane thicknesses lay in the range of 25-125 um, and catalyst areal loadings range from 0.05 to 0.35 mg/cm2. We show that the transmission spectrum correlated to membrane thickness and catalyst loading values separately, and also used a mathematical model to calculate both quantities simultaneously, from a single measurement of transmission. Measurements were carried out using a Fourier-transform infrared (FTIR) spectrometer, in specular transmission mode, in the wavelength range of 3-13 um (3333-770 cm-1). We discuss the potential application of this method to the development of roll-to-roll manufacturing full-area-scanning quality inspection of catalyst-coated membrane (CCM) materials.
AB - We present a study of mid-infrared (mid-IR) transmission through typical proton-exchange fuel cell and water electrolyzer catalyst-coated membrane materials, and the determination of membrane layer thickness, and catalyst layer loading, from the power of the transmitted beam. Measured membrane thicknesses lay in the range of 25-125 um, and catalyst areal loadings range from 0.05 to 0.35 mg/cm2. We show that the transmission spectrum correlated to membrane thickness and catalyst loading values separately, and also used a mathematical model to calculate both quantities simultaneously, from a single measurement of transmission. Measurements were carried out using a Fourier-transform infrared (FTIR) spectrometer, in specular transmission mode, in the wavelength range of 3-13 um (3333-770 cm-1). We discuss the potential application of this method to the development of roll-to-roll manufacturing full-area-scanning quality inspection of catalyst-coated membrane (CCM) materials.
KW - catalyst-coated membranes
KW - Fourier-transform infrared spectroscopy
KW - fuel cells
KW - proton-exchange membranes
KW - quality control
KW - roll-to-roll manufacturing
KW - water electrolyzers
UR - http://www.scopus.com/inward/record.url?scp=85146035723&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2022.232601
DO - 10.1016/j.jpowsour.2022.232601
M3 - Article
SN - 0378-7753
VL - 559
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -