Study on Preparation and Properties of β-NiOOH

Hui Min Gu; Wei Wang; Yu Chun Zhai

doi:10.4028/www.scientific.net/AMR.239-242.646

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Study on Preparation and Properties of β-NiOOH

Study on Preparation and Properties of β-NiOOH

Abstract:

Taking β-Ni(OH)₂ powder as raw material and K₂S₂O₈ as oxidant, β-NiOOH was prepared through chemical oxidation process, then which was used as cathode material to assemble nickel-zinc cell. Effects of reaction time, reaction temperature, NaOH concentration, Ni(OH)₂ concentration and mass ratio of K₂S₂O₈ and Ni(OH)₂ on 1^st discharge specific capacity of cells were studied. XRD result indicates that the crystal structure of β-NiOOH is disordered in a way. TG-DTA analysis indicates that the decomposition reaction of β-NiOOH occurs at temperature of 156-280 °C, the end product is NiO.