## Abslract -A model of the negative plate of the Ni-Fe accumulator is proposed, similar to that of the negative plate of the Ni-Cd accumulator. Besides volume changes of the solid phase and other obvious effects, the dependence of the tortuosity factor of the pores on porosity was also taken into
Theory of porous electrodes—XVI. The nickel hydroxide electrode
✍ Scribed by K. Micka; I. Roušar
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 581 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0013-4686
No coin nor oath required. For personal study only.
✦ Synopsis
Abstact -A model of the positive plate of a nickel-cadmium accumulator is proposed, based on the known electrochemical behaviour of hydrated nickel oxides and on transport equations similar to those used previously for the cadmium electrode. The mathematical treatment of this model allows to predict the theoretical discharge characteristics, which are compared with those measured on a real electrode. A comparison of the calculated and measured discharge time suggests that the composition of the oxidised form is intermediate between NiO,., and NiO1.s.
📜 SIMILAR VOLUMES
## Abstrac -An electrode reaction coupled with dismutation of the reduction product is treated mathematically for the case of a porous oxygen electrode in an alkaline medium. The electrode is regarded as a superposition of three continuous phases and the changes of the electrolyte concentration ar
Abstraet-The voltage depression phenomenon which occurs when beta-NiOOH electrodes are held on potential float for long periods, after being charged, has been investigated. It has been shown that the effect is mainly due to the formation of a low energy form of beta-NiOOH, rather than the formation
The ageing of c+Ni(OH)I causes changes in the characteristics of the electrode due to the formation of different oxyhydroxides on charging. The discharge process has heen studied by potential step technique, and diffusion coefficients refined by extrapolation have shown little variation with ageing
Structural changes during the anodic oxidation and cathodic reduction of nickelous hydroxide have been observed by direct X-ray examination of electrodes, combined with powder photography and optical microscopy. The tendency towards persistence of texture and lattice structure during anodic oxidati