Synthesis and characterization of nickel hydroxide powders for battery application

Abstract

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Cyanate Intercalation in Nickel Hydroxide

“…In support of the above argument, BET surface areas of the powders do not change significantly with the prolonged digestion times. This suggests that the available surfaces of the micron-sized secondary particles remain at a constant level. , …”

“…Urea decomposition at temperatures above 60 °C has been widely applied to produce various precursors for mixed metal oxides. − Homogeneous precipitation forced by urea decomposition in solutions containing Ni 2+ ions has been observed to yield α-Ni(OH) 2 . − Nevertheless, the product does not show stability against transformation into β in alkaline solutions. The intercalating species besides water were found to be either cyanate (intermediate decomposition product) or carbonaceous species. ,,− …”

Kinetics of Urea Decomposition in the Presence of Transition Metal Ions: Ni2+

“…Therefore, crystallite size calculations in these systems should be considered qualitative in nature but definitely “nano‐sized.” On the other hand, crystallite size calculations explain the growth mechanism of the precipitated particles. Although the particles grow up to several micrometers, 11,38,39 the fact that primary crystallites remain nanosized implies an agglomerative growth mechanism (Fig. 8).…”