Structural study of β-Ni(OH)2 and α-Ni(OH)2 variants for electrode applications

Autor:	Armin Olbrich, Herbert Dittrich, Margret Wohlfahrt-Mehrens, Julia Meese-Marktscheffel, Peter Axmann, Jürgen Garche, Sven Albrecht, Gerhard Gille
Rok vydání:	2005
Předmět:	Coprecipitation Analytical chemistry Stacking chemistry.chemical_element Crystal structure Condensed Matter Physics Inorganic Chemistry Nickel chemistry Transition metal X-ray crystallography General Materials Science Chemical composition Powder diffraction
Zdroj:	Zeitschrift für Kristallographie - Crystalline Materials. 220:306-315
ISSN:	2196-7105 2194-4946
DOI:	10.1524/zkri.220.2.306.59135
Popis:	Powder samples of β-Ni(OH)2 and doped variants of the α-Ni(OH)2 structure type were prepared by a coprecipitation method. Chemical composition was analysed by ICP. Samples were measured by X-ray powder diffraction (XRD). Single peak profiles were analysed by fitting a splitted Pearson VII funktion to the measured patterns. Peak profile data were collected and a strong anisotropic peak broadening was observed. Structure models of possible stacking orders in β-Ni(OH)2 and doped α-Ni(OH)2 were developed. DIFFaX simulations of structure models with statistical stacking orders were carried out. The simulated peak profiles were compared to the measured ones and a fairly good agreement was found. A semiquantitative analysis of the stacking faults in these materials is shown.
Databáze:	OpenAIRE
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