An easily constructed reciprocating device for the X-ray examination of working electrodes is described, and an example is given of its application to the study of electrodeposited layers. RCsum&Un dispositif facile ii assembler permet d'obtenir in situ les intensitks relatives des diagrammes de di
The nickel hydroxide electrode; the effects of ageing—I X-ray diffraction study of the electrode process
✍ Scribed by G.W.D. Briggs; W.F.K. Wynne-Jones
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- English
- Weight
- 657 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
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 oxidation was confirmed by comparison of the processes for freshly prepared and for aged electrodes. The diffraction evidence is shown to imply the formation of a series of nearly related layer structures rather than of distinct crystalline phases.
Rf!sum&--L'examen roentgenographique et la microscopic dknotent des changements structuraux durant l'oxydation anodique et la rCduction cathodique de l'hydroxyde de nickel, fralchement prkparb ou muri. 11 apparait une s&ie de structures stratifikes voisines les unes des autres, pluti3t que des phases cristallines distinctes. Zusammenfassung-Die strukturellen Vergnderungen von Nickel-(II)-Hydroxyd w&end der anodischen Oxydation und der kathodischen Reduktion wurden sowohl durch unmittelbare Rtintgen-Untersuchung der Elektroden als such mit Hilfe von Pulveraufnahmen und durch optische Mikroskopie verfolgt. Die Tendenz zur Aufrechterhaltung der Textur und der Gitterstruktur bei der anodischen Oxydation konnte durch den Vergleich zwischen frisch bereiteten und gealterten Elektroden gesichert werden. Die Diffraktogramme weisen eher auf die Bildung einer Reihe nahe verwandter Schichtstrukturen hin als auf die Ausbildung einzelner ausgeprtigter kristalliner Phasen.
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