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Cathodic behavior of molten CaCl2-CaO and CaCl2-NaCl-CaO

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Abstract

The cathodic behavior of molten CaCl2, CaCl2-CaO and equimolar CaCl2-NaCl-CaO was studied by cyclic voltammograms and constant potential polarization at temperatures of 1123 to 1173 K on molybdenum and titanium electrodes. The diffusion coefficient of Ca2+ (CaO) in molten CaCl2-CaO was calculated from the linear relationship between the square root of scan rate and the peak current density. The deposition potentials and the potential temperature coefficient of CaO in molten CaCl2-0.5mol%CaO and CaCl2-NaCl-0.5mol%CaO were also obtained from their cyclic voltammograms. The result shows that CaO is more easily reduced than CaCl2. The addition of NaCl in molten CaCl2-CaO induces the underpotential electrodeposition of CaO.

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Authors and Affiliations

  1. Department of Chemistry, Northeastern University, Shenyang, 110004, China

    Shu-lan Wang, Wei Wang, Shi-chao Li & Shan-hui Cao

Authors
  1. Shu-lan Wang
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  2. Wei Wang
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  3. Shi-chao Li
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  4. Shan-hui Cao
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Correspondence to Shu-lan Wang.

Additional information

This work was financially supported by the National Natural Science Foundation of China (No.50674027).

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Wang, Sl., Wang, W., Li, Sc. et al. Cathodic behavior of molten CaCl2-CaO and CaCl2-NaCl-CaO. Int J Miner Metall Mater 17, 791–794 (2010). https://doi.org/10.1007/s12613-010-0391-8

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  • DOI: https://doi.org/10.1007/s12613-010-0391-8

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