Ruthenium standard curve

Figure 35 X-ray diffractograms of calcined 5 y Rull.6%Sn/y-Al20i catalyst. Replacement of Ru by Sn in the lattice of RUO2. Preparation co-impregnation, Sn Ru atomic ratio 2, Calcination 450 °C all lines were referred to that of Si internal standard. Curve 1 - catalyst, 2 - simulated spectrum of RUO2 with 6 %-replacement of Ru by Sn, 3 - simulated spectrum of pure Ru02- RuOx -ruthenium(IV)-oxide, GamA - y-Al20 ...

Fig. 12. Rotating (45 Hz) ruthenium dioxide/titanium dioxide electrode (35%w/w ruthenium dioxide) in 1.0 M NaCl solution, (a) Standard rate constant-potential curve assuming a constant Tafel slope of 70mV. Dcl = 5 x 10 6cm s-1, Dc = 7 x 10 6cm s-1, E° = 1050mV SCE, and R = 0.8 ohm cm2. (b) Standard rate constant-potential curve assuming a constant Tafel slope of 40mV. DC1 = 5 x 10 8cm s 1, Z)ct2 = 7 x 10 8cm s 1, E° = 1050mV SCE, and R = 0.8ohm cm2. (c) Common experimental and calculated current-potential curve using the parameters of Fig. 12(b). (d) Double layer capacity curve.

Figure 9-2 shows the discharge curve of borosilicate electrode versus the standard carbon electrode of the H-Tec fuel cell. The load across the fuel cell for this test is 10 Q, resulting in a discharge of 100 mA cm. The cermet electrode demonstrates minimal increases of impedance over the discharge period and the higher overall voltage. The maximum developed by borosihcate substrate is 0.3489 V. This demonstrates that Ag metallization with a platinum/ruthenium catalyst can be developed as a cathode structure in DMFCs. 

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