Teflon-bonded electrodes, cyclic

Figure 3.6. Cyclic voltammograms of Teflon-bonded electrodes (2 mg active material, 0.15 cm projected area) containing intact (panel A) and heat treated ClFeTMPP/BP (panel B) in 1 M H3PO4 (according to Figure 1 in ref. [45] reproduced with permission of the American Chemical Society).

FIGURE 12, In situ Mossbauer spectra of a 50% w/w Fe-enriched hydrated ferric oxide precipitated on Shawinigan black high-area carbon in the form of a Teflon-bonded electrode in 4 M KOH at (a) -0.3 V and (b) -1.1 V versus Hg/HgO, OH". Inset Cyclic voltammogram of the same, although nonenriched, material as in (a) in the form of a thin porous Teflon-bonded coating electrode deposited on an ordinary pyrolytic graphite electrode, in 4 M KOH. Scan rate 10 mV s" ... 

Fig. 1 shows the cyclic voltammetry of an FePc/XC-72 dispersion, heated at 280°C in an inert atmosphere, in the form a thin porous Teflon bonded coating electrode in a 1 M NaOH solution. A description of the methodology involved in the preparation of this type of electrode may be found in Ref. 3. As can be clearly seen, the voltammetry of this specimen exhibits two sharply defined peaks separated by about 330 mV. The potentials associated with these features are essentially identical to those found by other workers for the reduction and oxidation of films of iron oxy-hydroxide formed on a number of host surfaces, including iron and carbon.(5)... 

FIGURE 9. Cyclic voltammetry of 7% w/w iron phthalocyanine dispersed on Vulcan XC-72 carbon, after a heat treatment at 300°C in a flowing inert atmosphere. The measurement was conducted with the material in the form of a thin porous Teflon-bonded coating electrode in 1 M NaOH at 25 C. Sweep rate 5 mV s" ... 

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