The Dissolution Kinetics of Lithiated NiO in Aqueous Acid Solutions
Abstract
The factors controlling the dissolution of metal oxides are of major importance in understanding the role of such oxides in the control of corrosion through the formation of passivation films and the use of various oxides as battery cathodes. The dissolution kinetics of mosaic lithiated nickel oxide have been examined in concentrated H2SO4 and HCl solutions as a function of potential and found to be strongly dependent on potential with the rate increasing with increasingly anodic potentials and passing through a maximum in the H2SO4 solutions. The temperature dependence indicates Arrhenius behavior with an enthalpy of activation of 23 kcal/mole. Complexing agents such as EDTA have been found to increase the dissolution rate. At relatively anodic potentials, O18 labelling experiments indicate that the generation of O2 involves to a significant extent lattice O(-2), probably through a mechanism involving the p-carriers falling into O(-2) surface states.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1975
- Accession Number
- ADA008426
Entities
People
- Alan Riga
- Chin-ho Lee
- E. Yeager
Organizations
- Case Western Reserve University