An Efficient control over molecular weights of the catalyst binder (PWN) was achieved by using RAFT polymerization technique and radical transfer agent. The reduction of molecular weight of the binder stand for better processability by the catalyst ink preparation and increased the efficiency of the phosphonation reaction by the synthesis of PWN from 46 up to 91%.

During the 18M consortium meeting, USTUTT has presented methylated polyvinylpyridinium as an alternative ionomer. A membrane based on this ionomer has been tested in the HT-PEMFC and delivered peak power density of 1.6 W cm-2 at 180°C using oxygen on the cathode side. The performance at broad temperature range from 20 to 200°C was recorded and the accelerated stress test (temperature cycling from 160 to 80°C) showed a stable performance of the system up to 100 cycles (~ 10 days).