Self-assembled nickel hydroxide three-dimensional nanostructures: A nanomaterial for alkaline rechargeable batteries

Minhua Cao*, Xiaoyan He, Jun Chen, Changwen Hu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

166 Citations (Scopus)

Abstract

α- and β-Ni(OH)2 with three-dimensional (3D) nanostructures were synthesized in a water-in-oil reverse micelle/microemulsion system. The form and shape of Ni(OH)2 can be readily tuned by adjusting experimental parameters of the reverse micelle/microemulsion system. α-Ni(OH)2 with dandelion-like nanostructures was obtained in the reverse microemulsion of cetyltrimethylammonium bromide (CTAB)/water/ cyclohexane/n-pentanol with a molar ratio of H2O to surfactant of 40; β-Ni(OH)2 phase with flower-like nanostructures was formed in the reverse micelles of the same composition with a molar ratio of H 2O to surfactant of 10. Electrochemical measurements of the as-synthesized α-Ni(OH)2 phase showed that the 3D α-Ni(OH)2 nanostructures exhibited superior cycling reversibility and improved capacity compared with commercial Ni(OH)2.

Original languageEnglish
Pages (from-to)170-174
Number of pages5
JournalCrystal Growth and Design
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 2007
Externally publishedYes

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