Core-shell catalysts mass activity values

Figure 19.8 illustrates the effect of hold time at each current density point in MEA tests using different nanostructured thin film (NSTF) MEAs, showing increased MEA mass activity at 900 mV using 5 s holds (matching RDE values more closely) compared with lower MEA mass activity using 1,050 s holds at each point in the polarization curve [13] similar variations in activity between the MEA and RDE techniques may also be expected for core-shell catalyst materials. 

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