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RESEARCH PRODUCT
Prussian blue films deposited on graphite+epoxy composite electrodes: electrochemical detection of the second percolation threshold
J. VilaplanaFrancisco VicenteJosé Juan García-jareñoJ. Navarro-laboulaisJ. Navarro-laboulaisJuan LópezD. Benitosubject
Prussian blueGeneral Chemical EngineeringComposite numberPercolation thresholdAnalytical ChemistryCondensed Matter::Materials Sciencechemistry.chemical_compoundchemistryPercolation theoryPercolationElectrodeElectrochemistryGraphiteComposite materialCyclic voltammetrydescription
Abstract The electrochemical behavior of Prussian blue films galvanostatically electrodeposited on graphite+epoxy-resin composite electrodes was studied. The composite electrodes were prepared with different graphite proportions and their effect on electrochemical reduction of the Prussian blue was analyzed by means of the uncompensated resistance approximation and the electrical percolation theory. The results suggest that the electrode with 60% graphite reaches the second percolation threshold and its internal structure changes from a compact to a porous one. Mechanical tensile tests were performed in order to confirm the critical behavior of this material at the percolation thresholds. The percolation threshold measured agrees with those calculated theoretically.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-04-01 | Journal of Electroanalytical Chemistry |