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چکیده
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Electrode coatings are now extensively employed to improve the performance of modern electrochemical technology [1]. Lead dioxide coatings have a low cost compared to those based on precious metals, high electrical conductivity (comparable to metals), high oxygen over potential and good stability in controlled conditions leading to possible application in new processes present study. This paper focuses on lead dioxide coatings, formed ex-situ by electrodeposition onto inert substrates such as stainless steel from aqueous electrolytes containing Pb(II)[2]. Pb2++ 2H2O PbO2+ 4H++2e Lead dioxide electrodes can only be used in applications that require a rather positive potential. If a potential positive to the equilibrium potential is applied, the coating will be protected from corrosion. On the other hand, at any potential significantly negative to the equilibrium potential, cathodic reduction and dissolution of the lead dioxide coating are to be expected. In present study nanostructured layer has been made in aqueous solution of lead(ІІ)nitrate on the surface of stainless steel as anode in the constant current. The purpose was synthesis the β-PbO2 on stainless steel that XRD investigation confirmed desired product. Refinement of the β-PbO2 structure converged well and the extent of crystal faulting appeared to have been much less. The recognition of this structural degree of freedom in PbO2 is significant in view of its potential influence on properties such as electronic conductivity and electrochemical activity. The electrode was used for oxidation of chloride to chlorate. In the second stage oxidation of chlorate to perchlorate was investigated [2].
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