The electrochemical behaviour of a pure iron electrode was studied by cyclic voltammetry in solutions of KOH containing LiOH, NazS or SeOz. The maximum charge delivered by the electrode in one cycle was observed in the concentration ranges 1.1 -2.4 M KOH and lop4 -lop3 M NazS. Sulphide ions enhance
Study of iron oxide electrodes in an alkaline electrolyte
✍ Scribed by K. Micka; Z. Zábranský
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 633 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0378-7753
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✦ Synopsis
Electrodes were prepared by pressing a mixture of iron oxides with a conducting component and a plastic binder, and their electrochemical behaviour in aqueous KOH solution was studied with regard to the influence of doping agents, impurities, and other factors. The discharge capacity of the electrodes was substantially enhanced by adding a conducting component such as acetylene black, and decreased when impurities in the iron oxides, mainly manganese, were present. Of the doping agents, sulphide ions proved most effective in increasing the discharge capacity.
📜 SIMILAR VOLUMES
The passivation characteristics of a planar zinc electrode have been examined in 2 M KOH electrolytes containing a variety of additions. The time to passivation has been measured and compared to that of a planar cadmium electrode in 5.3 M KOH. The most promising additives were found to be borate and