- Title
- Proton diffusion in gamma-manganese dioxide
- Creator
- Browning, Gregory J; Donne, Scott W.
- Relation
- Journal of Applied Electrochemistry Vol. 35, no. 9, p. 871-878
- Publisher
- Chapman & Hall
- Resource Type
- journal article
- Date
- 2005
- Description
- Deconvolution of the electrolytic manganese dioxide (EMD) discharge curve has indicated the presence of a number of energetically different reduction processes. This has been used to determine the contribution of each reduction process to the total discharge. Using step potential electrochemical spectroscopy ( SPECS), the i-t data were modelled as the sum of the discharge of the individual reduction processes. From this, A root D for each reduction process as a function of degree of discharge was determined. The maximum A root D values for each process ranged from 2.3 x 10(-2) to 4.0 x 10(-4) cm(3) s(-1/2) g(-1) values are consistent with previously reported values for A root D, although in this case we have determined values for the entire compositional range.
- Subject
- electrolytic manganese dioxide; proton diffusion; step potential; electrochemical spectroscopy; cathodic reduction mechanism; alkaline electrolyte; redox processes; cation vacancies; MnO2; spectroscopy; polarization; discharge
- Identifier
- uon:21
- Identifier
- http://hdl.handle.net/1959.13/24475
- Identifier
- ISSN:0021-891X
- Language
- eng
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