PGM (precious group metal) amount in PEM catalyst layers – by EWII

One of the ambitious targets in HPEM2Gas is to lower the amount of precious group metal (PGM) in the catalyst layers without jeopardizing good performance or durability. The specific target is to reduce the total PGM loadings down to 0.5 mgPGM/cm2 or below. Good results are obtained e.g. the cathode PGM loading has been reduced by a factor of five without significant loss of performance nor durability (Figure below). Furthermore, prolonged single cell test show encouraging low degradation rates in steady state test.

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