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Enhancing capacitance behaviour of CoOOH nanostructures using transition metal dopants by ambient oxidation.

ABSTRACT: Cobalt hydrate and doped binary Co0.9M0.1OOH (M?=?Ni, Mn, Fe) nanorings of 100-300?nm were fabricated in solution through a facile ambient oxidation method. A transformation from Co0.9Ni0.1(OH)2 nanodiscs to hollow Co0.9Ni0.1OOH nanorings was observed with prolonged reaction time. Core-shell nanodiscs have elemental segregation with a Co(OH)2 core and Ni(OH)2 shell. Co0.9Ni0.1OOH nanorings displayed a higher electrochemical capacitance than Mn and Fe doped nanorings materials or materials with disc-like geometries.

SUBMITTER: Chen Y

PROVIDER: S-EPMC4745070 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Enhancing capacitance behaviour of CoOOH nanostructures using transition metal dopants by ambient oxidation.

Chen Yanhui Y Zhou Junfeng J Maguire Pierce P O'Connell Robert R Schmitt Wolfgang W Li Yonghe Y Yan Zhengguang Z Zhang Yuefei Y Zhang Hongzhou H

Scientific reports 20160208

Cobalt hydrate and doped binary Co0.9M0.1OOH (M = Ni, Mn, Fe) nanorings of 100-300 nm were fabricated in solution through a facile ambient oxidation method. A transformation from Co0.9Ni0.1(OH)2 nanodiscs to hollow Co0.9Ni0.1OOH nanorings was observed with prolonged reaction time. Core-shell nanodiscs have elemental segregation with a Co(OH)2 core and Ni(OH)2 shell. Co0.9Ni0.1OOH nanorings displayed a higher electrochemical capacitance than Mn and Fe doped nanorings materials or materials with d ...[more]

PMID: 26853105

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