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Electrodeposition of cobalt from urea-acetamide-LiBr melt

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Abstract

The electrodeposition behavior of cobalt in a urea-acetamide-LiBr melt was investigated using a tungsten electrode at 353 K. Cyclic voltammetry studies demonstrated that the reduction of Co(II) to Co is an irreversible, one-step, two-electron transfer process, and chronoamperometry experiments revealed that the electrodeposition of cobalt proceeds via 3D instantaneous nucleation with diffusion-controlled growth on the tungsten electrode. The electrodeposition of cobalt was performed at various cathodic potentials (−0.75 to −0.90 V) and temperatures (343 to 373 K) in a urea-acetamide-LiBr melt. The deposits were examined using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The SEM images revealed that uniform, dense, and compact deposits were obtained at more positive cathodic potentials between 343 and 353 K. The EDS and XRD analysis confirmed that the obtained deposits were pure cobalt.

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Acknowledgments

The authors would like to express their gratitude for the financial support provided by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (Grant No. 2012BAE08B01) and the National Natural Science Foundation of China (Grant Nos. 51074045, 51474060, 51322406, 51434005).

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Authors and Affiliations

  1. School of Materials and Metallurgy, Northeastern University, Shenyang, 110819, China

    Min Li, Bingliang Gao, Zhongning Shi, Xianwei Hu, Liangxing Li, Zhaowen Wang & Jiangyu Yu

  2. Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Shenyang, China

    Min Li, Bingliang Gao, Zhongning Shi, Xianwei Hu, Liangxing Li, Zhaowen Wang & Jiangyu Yu

  3. Division of HSE Department, Aluminum Corporation of China, Beijing, 100082, China

    Shixing Wang

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  1. Min Li
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  2. Bingliang Gao
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  3. Zhongning Shi
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  4. Xianwei Hu
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  7. Zhaowen Wang
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Correspondence to Min Li.

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Li, M., Gao, B., Shi, Z. et al. Electrodeposition of cobalt from urea-acetamide-LiBr melt. J Solid State Electrochem 20, 247–254 (2016). https://doi.org/10.1007/s10008-015-3025-2

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  • DOI: https://doi.org/10.1007/s10008-015-3025-2

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