The formation mechanism of alkaline iron electrodes has been studied using galvanostatic polarisation techniques. An increase in electrode capacity is observed during initial charge-discharge cycling and is attributed to changes in the electrical conductivity, texture, and porosity of the active mat
Self-discharge of the alkaline iron electrode
✍ Scribed by Lars Öjefors
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 270 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The self-discharge reaction, which is a hydrogenevolving corrosion process, where the anode reaction is identical to the first discharge step, has been studied by three different methods: H,-evolution, polarization curves and potentiodynamic discharge. The influence of 28 additives at 30, 50 and 70°C on both discharge and self-discharge is shown. Most additives decrease both the self-discharge and discharge rates but for K2S and hydrazinesulphate added to the electrolyte. These two additives have a positive influence on the discharge process of the iron electrode.
📜 SIMILAR VOLUMES
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
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 electrod