Pt Loading Mass Determination of PEMFC Catalyst Sheet Using a Benchtop EDXRF Analyzer

We introduce a fast and non-destructive method for Pt catalyst loading mass determination in catalyst sheet of proton exchange membrane fuel cell using a benchtop EDXRF analyzer. We made a calibration curve by analyzing multiple in-house samples with different Pt loading masses (0.052 - 0.39 mg/cm2) and determined catalyst loading mass of a sample using the curve. Our result showed that the curve had a good linearity and that the calculated result was consistent with the labeled value of the sample with good repeatability.