6533b85ffe1ef96bd12c2431
RESEARCH PRODUCT
Ohmic drop of Prussian-blue/graphite+epoxy electrodes
J. TrijuequeFrancisco VicenteJosé Juan García-jareñoA. Sanmatı́asJ. Navarro-laboulaissubject
Prussian blueMaterials scienceGeneral Chemical EngineeringDrop (liquid)Analytical chemistryPercolation thresholdOverpotentialchemistry.chemical_compoundchemistryElectrodeElectrochemistryGraphiteOhmic contactElectrode potentialdescription
Abstract Ohmic drop effects on the voltammogram shape of the Prussian-blue⇌Everitt’s salt system have been studied by considering the electroactive film model. As the uncompensated resistance varies, the experimental characteristic curve parameters also varies. A dependence of the voltammograms with the graphite proportion was found related with the ohmic drop due to the composite electrodes. The optimal graphite proportion to obtain a good faradaic-to-charge current ratio was 62% in weight which coincides with the second percolation threshold. The ohmic overpotential, which relates the ohmic drop with the electrochemical magnitudes, is also minimum at this proportion.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-11-01 | Electrochimica Acta |