Cathodic behavior of the manganese dioxide electrode in non-aqueous organic electrolytes
Abstract
The cathodic behavior of MnO2 electrodes in electrolytes of LiClO4 dissolved in propylene carbonate, tetrahydrofurane, dimethyl sulphoxide, and gamma butyrolacetone, was investigated. Studies were done by using an electric potential scanning method and a steady current discharge method. Heat treatment conditions were found to have a large effect on the electrochemical activity of the MnO2; maximum discharge capacity occurring with a MnO2 electrode heat treated in air at 200 C and inactivity occurring with drying at room temperature and vacuum heat treatment. The viscosity of the electrolyte used also affected the cathode reaction. An apparent utilization factor/percentage was obtained from the ratio of the quantity of electricity used for electrodeposition to the amount gotten on discharge. This factor decreased when the electrolytic layer became thick, or when the discharge current density became high.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1977
- Bibcode:
- 1977STIN...7814251M
- Keywords:
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- Electrodes;
- Manganese Oxides;
- Nonaqueous Electrolytes;
- Cathodes;
- Electric Potential;
- Electrochemistry;
- Heat Treatment;
- Organic Liquids;
- Electronics and Electrical Engineering