Device fabrication anode preparation

A num ber of different techniques have been used to study the surface preparation techniques used prior to anodic oxidation. For device fabrication, mechanical polishing Is usually necessary to insure a relatively flat surface. Some chemical treatment is necessary to remove the mechanical damage induced by grit polishing. Often etching or chem-mechanical polishing is used to remove this damaged layer. However, it has been shown that chemical treatments do not leave a stoichiometric surface (27-30)(63). A kinetic study of the reaction of 0.1N Br in methanol with (Hg,Cd)Te under etch conditions found the relative rates of reaction of the individual constituents to be ... 

In Chapter 10, the authors will demonstrate the preparation techniques for ASPEM and the characterization results. The relationship between structure and properties will be discussed and compared. The double-layer carbon air cathodes were also prepared for solid-state alkaline metal fuel cell fabrication. The alkaline solid state electrochemical systems, sueh as Ni-MH, Zn-air fuel cells, Al-air fuel cells, Zn-Mn02 and Al-Mn02 cells, were assembled with anodes, cathodes and alkaline solid polymer electrolyte membranes. The electrochemical cells showed excellent cell power density and high electrode utilization. Therefore, these PVA-based solid polymer electrolyte membranes have great advantages in the applications for all-solid-state alkaline fuel cells. Some other potential applieations include small electrochemical devices, sueh as supercapacitors and 3C electronic products. 

A p-n-heterojunction type device can be fabricated on the basis of the junction formed between poly(pyrrole) and PT derivatives (e.g. PT or PMT) [784]. A PODT/Cfio junction device with a photo-induced charge transfer between PODT and Cgo is shown in Fig. 22 [449]. Rectifying bilayer electrodes with sequential bilayer structures are prepared from any pair of PBT/poly(pyrrole) and poly(3-bromothiophene)/poIy(pyrrole) by anodic electropolymerization on platinum electrodes [785]. 

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