Simplest Prussian-blue deposition from ferric ferricyanide solution by a reducing Ag spot put onto an ITO substrate

Reference:

Barton, R.T., Kellawi, H., Marken, F., Mortimer, R.J. and Rosseinsky, D.R., 2012. Simplest Prussian-blue deposition from ferric ferricyanide solution by a reducing Ag spot put onto an ITO substrate. Journal of Solid State Electrochemistry, 16 (12), pp. 3723-3724.

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Official URL:

http://dx.doi.org/10.1007/s10008-012-1811-7

Abstract

Prussian-blue (PB) film for electro-chromism can be electro-deposited on to an electrode (usually tin-doped indium oxide/glass) either directly from a PB colloid or from ferric ferricyanide in a two-electrode electro-chemical cell by applying a reductive potential. Alternatively, a "sacrificial" electron-producing silver flag electrode in the solution, when connected to the PB-receiving electrode, can effect the required reductive deposition. A silver spot, here innovatively applied as silver paint directly onto the deposition electrode, produces PB film on immersion in the iron(III)(III) solution, obviating the separate counter-electrode method.

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