Gold ring electrode

Figure 7.22 Manufacturing sequence of the heart compression device (a) four IPMNC fingers cut to scale (b) the fingers assembled between two gold ring electrodes (c) the fingers placed between the ring electrodes and closed.

Krausa and Schorb [23] described such a solid-state TNT gas sensor based on 25- xm gold disk working electrode, surrounded by a gold ring reference/counter electrode,... 

Fig. 31. Experimental potential fronts (a) during the corrosion of gold in a concentrated HCl/NaCl solution (after Ref. [85]) (b) during the potentiostatic reduction of SgOg2 on a silver ring electrode in dilute electrolyte [166], On the left are the corresponding set-ups.

For all measurements H2SO4 serves as supporting electrolyte. All chemicals were p.a. grade. For all vapour phase experiments the gold ring serves as reference electrode. 

A combined optical/electrochemical microelectrode can be used as the tip to study, for example, photoelectrochemical reactions on semiconductors [60-63]. This tip consists of a several micron diameter optical fiber coated with gold and insulated with a polymer film [60]. The optical fiber creates a focused light spot on the substrate surface and the concentric gold ring serves as an electrode to monitors the products of the photoelectrochemical reaction at a substrate. If ij and (the substrate photocurrent) are acquired, it is possible to image the photoelectrochemical response... 

Figure 16. Rotating disk-ring electrode data for O2 reduction on gold in O.lMNaOH at 25°C. IdUr vs. at various disk potentials. Au ring potentiostated at f n = 11 V. iV = 0.43.

The electrical conductivities were measured by using a guard ring electrode on the 3-ZrNCl samples pressed under a pressure of 100 MPa. Thin gold films were vacuum-evaporated onto the pressed sample as electrodes for the measurements. The lithium intercalated samples for the conductivity measurements were prepared by immersing another pressed 3 ZrNCl into a n-butyl lithium solution (15w/o in hexane) for 3 days, followed by washing with anhydrous hexane. The conductivities of the intercalated samples were measured by the four-probe method. 

Fig. 4.21 - Application of Equation (4.62) to the study of oxygen reduction at a gold disc electrode using a ring-disc electrode with Pt ring held at 0.4 V. Solution is NaOH (I moIdin ). Potentials vs Hg/HgO. Reproduced with permission from R. R. Adzic, N. M. Markovic and A. V. Tripkovic, Bull. Sco. Chim. Beograd, 45, (1980), 399.

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