Electrochemistry of Prussian blue films on metal and semiconductor electrodes

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2114118· OSTI ID:5159322

Viehbeck, A; DeBerry, D W

The electrochemical properties of Prussian blue films on Pt and spark anodized n-type TiO/sub 2/ electrodes were investigated. Evidence for four redox states for Prussian blue was obtained. While the oxidation of Everitt's salt to Prussian blue involves the high spin iron atoms, the oxidation of Prussian blue to Berlin green and Berlin green to Prussian yellow involves the low spin hexacyanoferrate groups. The Prussian blue/Everitt's salt redox system (E/sub 0/ = +0.2V vs. SCE) is the most stable and reversible couple. The diffusion coefficients for reduction and oxidation of this redox couple are 5.0 x 10/sup -9/ and 2.7 x 10/sup -9/ cm/sup 2//S, respectively. The photoelectrochromic behavior of Prussian blue on semiconductor TiO/sub 2/ electrodes is discussed. The films deposited on TiO/sub 2/ have short-circuit memory, and lateral color spreading through the film is slow. A light addressable electrochromic display is described.

• Research Organization: SumX Corporation, Austin, Texas
• OSTI ID: 5159322
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:6; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DIFFUSION
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
FILMS
MATERIALS
METALS
N-TYPE CONDUCTORS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOTOCHROMIC MATERIALS
PLATINUM
PLATINUM METALS
REDOX POTENTIAL
REDUCTION
SEMICONDUCTOR MATERIALS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS