Effects of different Ni(OH)2 precursors on the structure and electrochemical properties of NiOOH

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DOIResolve DOI: http://doi.org/10.1016/j.ijhydene.2011.02.132
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TypeArticle
Journal titleInternational Journal of Hydrogen Energy
Volume36
Issue16
Pages1005710064; # of pages: 8
SubjectNickel oxyhydroxide; High tap-density; Zn-NiOOH batteries; Cathode materials
AbstractNickel oxyhydroxide (NiOOH), an active material for alkaline Zn-NiOOH batteries, was synthesized by electrolysis oxidation of different Ni(OH)2 precursors, which were prepared by three methods: polyacrylamide (PAM) assisted two-step drying (PTSD), conventional coprecipitation (CCP), and “controlled crystallization” (CC). The NiOOH samples were characterized and tested using X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), BrunauereEmmetteTeller (BET) testing, laser particle size analysis, tap-density testing, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and a discharge test. The results demonstrate that the physical and electrochemical properties of NiOOH are strongly dependent on the properties of the Ni(OH)2 precursor, such as its morphology, microstructure, tap density, and specific surface area. The results of the electrochemical studies also show that the sample prepared by the PTSD method is superior to the others in electrochemical performance. The as-prepared, highdensity, non-spherical NiOOH is a promising active material for the positive electrode in Zn-NiOOH batteries.
Publication date
LanguageEnglish
AffiliationNRC Institute for Fuel Cell Innovation; National Research Council Canada
Peer reviewedYes
NPARC number19542547
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Record identifier93dfa755-1186-4e16-b11a-624484c0c603
Record created2012-02-23
Record modified2016-05-09
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