Catalytic Performance of Nanotunneled Mesoporous Thick H-CNF

The 1-Vcurves from single cell tests with the Pt-Ru 40 wt% catalysts supported on thick H-CNE and nanotunneled H-CNE (Pt 1.33, Ru 0.67 and CNE 3mgcm ) and with the Pt-Ru 60 wt% E-TEK catalyst (Pt 2, Ru 1 and C 2 mg cm ) (5 mg slurry hand-brushed on carbon paper) are shown in Eigure 3.6, and their maximum power densities are listed in Table 3.2. The maximum power densities produced by the E-TEK catalyst at 30 and 90 ° C were 41 and 140 mWcm , respectively. The maximum 

H-CNF atre H-CNF SffT H-CNF giFc - -NH-CNFSOrC Ner-CNFarc - NH-CWFWC 

The single cell performance of the catalyst supported on nanotunneied mesoporous H-CNE was found to be affected by the pH used in the impregnation procedure, which was controlled by adding 1 M NaOH solution. The highest maximum power density of 169 mWcm was produced with the catalyst obtained at pH 3-4. Accurate control of the pH in the impregnation procedure is therefore an important factor for improving the catalytic activity. 

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