DISCHARGE MECHANISM OF THE V2O5 ELECTRODE.
Abstract
The behavior of V2O5 single crystals, grown from the melt, during cathodic polarization and recovery, was investigated. The dependence of potential upon pH showed that the only plausible reduction product was a solid oxide or oxyhydroxide, polarization being due to the formation of a solid solution. In the pH range 2.0 - 5.5, the curve of electrode potential vs. time during both polarization and recovery was accurately predicted by an equation, already applied to MnO2, derived from the assumption that the product is removed from the surface by diffusion into the electrode. Using tritium as a tracer, it was shown that hydrogen is incorporated in the electrode during discharge at pH 4.7. The activation energy for diffusion was found to be 6.7 kcal/mole, which is consistent with bipolar diffusion of protons and electrons. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1969
- Accession Number
- AD0693308
Entities
People
- Allen B. Scott
- Kenneth R. Newby
Organizations
- Oregon State University