Synthesis and characterization of Co<sub>3</sub>O<sub>4</sub> prepared from atmospheric pressure acid leach liquors of nickel laterite ores

Long Meng; Zhan-cheng Guo; Jing-kui Qu; Tao Qi; Qiang Guo; Gui-hua Hou; Peng-yu Dong; Xin-guo Xi

doi:10.1007/s12613-018-1542-6

Volume 25 Issue 1

Jan. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(1): 20-27

Long Meng, Zhan-cheng Guo, Jing-kui Qu, Tao Qi, Qiang Guo, Gui-hua Hou, Peng-yu Dong, and Xin-guo Xi, Synthesis and characterization of Co₃O₄ prepared from atmospheric pressure acid leach liquors of nickel laterite ores, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 20-27. https://doi.org/10.1007/s12613-018-1542-6

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Long Meng, Zhan-cheng Guo, Jing-kui Qu, Tao Qi, Qiang Guo, Gui-hua Hou, Peng-yu Dong, and Xin-guo Xi, Synthesis and characterization of Co3O4 prepared from atmospheric pressure acid leach liquors of nickel laterite ores, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 20-27. https://doi.org/10.1007/s12613-018-1542-6

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Research Article

Synthesis and characterization of Co₃O₄ prepared from atmospheric pressure acid leach liquors of nickel laterite ores

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Corresponding author:
Qiang Guo E-mail: qguo@home.ipe.ac.cn
Received: 16 February 2017; Revised: 1 May 2017; Accepted: 1 June 2017

Abstract

Abstract

A chemical precipitation-thermal decomposition method was developed to synthesize Co₃O₄ nanoparticles using cobalt liquor obtained from the atmospheric pressure acid leaching process of nickel laterite ores. The effects of the precursor reaction temperature, the concentration of Co²⁺, and the calcination temperature on the specific surface area, morphology, and the electrochemical behavior of the obtained Co₃O₄ particles were investigated. The precursor basic cobaltous carbonate and cobaltosic oxide products were characterized and analyzed by Fourier transform infrared spectroscopy, thermogravimetric differential thermal analysis, X-ray diffraction, field-emission scanning electron microscopy, specific surface area analysis, and electrochemical analysis. The results indicate that the specific surface area of the Co₃O₄ particles with a diameter of 30 nm, which were obtained under the optimum conditions of a precursor reaction temperature of 30℃, 0.25 mol/L Co²⁺, and a calcination temperature of 350℃, was 48.89 m²/g. Electrodes fabricated using Co₃O₄ nanoparticles exhibited good electrochemical properties, with a specific capacitance of 216.3 F/g at a scan rate of 100 mV/s.
- nickel laterite ores, acid leach liquors;
- synthesis;
- cobaltosic oxide;
- characterization

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