Determination of Diffusion Coefficients of Mg2+ Ions from Molten LiCl-KCl-MgCl2

Hyo Yeol Ryu; Sang Mun Jeong

doi:10.14233/ajchem.2014.17701

Issue

Vol. 26 No. 13 (2014): Vol 26 Issue 13

Issue Published : June 23, 2014

This work is licensed under a Creative Commons Attribution 4.0 International License.

Determination of Diffusion Coefficients of Mg2+ Ions from Molten LiCl-KCl-MgCl2

https://doi.org/10.14233/ajchem.2014.17701

Hyo Yeol Ryu

Department of Chemical Engineering, Chungbuk National University, Heungduk-gu, Cheongju, Chungbuk 361-763, Republic of Korea

Sang Mun Jeong

Department of Chemical Engineering, Chungbuk National University, Heungduk-gu, Cheongju, Chungbuk 361-763, Republic of Korea

Corresponding Author(s) : Sang Mun Jeong

smjeong@chungbuk.ac.kr

Asian Journal of Chemistry, Vol. 26 No. 13 (2014): Vol 26 Issue 13
Article Published : June 26, 2014

Abstract

The diffusion coefficients of Mg²⁺ ions at molybdenum electrode in molten LiCl-KCl-MgCl₂ at 670 ºC were determined using the cyclic voltammetry, chronoamperometry and chronopotentiometry, which were calculated to be 1.47 × 10^-6, 1.23 × 10^-6 and 1.67 × 10^-6 cm²/s, respectively. The activation energy for the diffusion process of Mg²⁺ ions was found to be 106.3 kJ/mol. The underpotential deposition (UPD) of Li⁺ ions on the pre-deposited Mg and the codeposition of Mg²⁺ and Li⁺ ions led a formation of liquid Mg-Li solution at a more positive potential than a potential for Li deposition.

Keywords

Magnesium Diffusion coefficient Activation energy LiCl-KCl-MgCl2

Yeol Ryu, H., & Mun Jeong, S. (2014). Determination of Diffusion Coefficients of Mg2+ Ions from Molten LiCl-KCl-MgCl2. Asian Journal of Chemistry, 26(13), 4011–4014. https://doi.org/10.14233/ajchem.2014.17701

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References

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References

S.M. Jeong, H.S. Shin, S.S. Hong, J.M. Hur, J.B. Do and H.S. Lee, Electrochim. Acta, 55, 1749 (2010); doi:10.1016/j.electacta.2009.10.060.

H.Y. Ryu, S.M. Jeong, Y.C. Kang and J.G. Kim, Asian J. Chem., 25, 7019 (2013); doi:10.14233/ajchem.2013.08.

F. Gao, C. Wang, L. Liu, J. Guo, S. Chang, L. Chang, R. Li and Y. Ouyang, J. Rare Earths, 27, 986 (2009); doi:10.1016/S1002-0721(08)60375-0.

Y.D. Yan, M.L. Zhang, Y. Xue, W. Han, D.X. Cao, X.Y. Jing, L.Y. He and Y. Yuan, Phys. Chem. Chem. Phys., 11, 6148 (2009); doi:10.1039/b821609f.

K. Ye, M.L. Zhang, Y. Chen, W. Han, Y.D. Yan, S.Q. Wei and L.J. Chen, J. Appl. Electrochem., 40, 1387 (2010); doi:10.1007/s10800-010-0106-x.

Y.D. Yan, M.L. Zhang, Y. Xue, W. Han, D.X. Cao and S.Q. Wei, Electrochim. Acta, 54, 3387 (2009); doi:10.1016/j.electacta.2009.01.008.

M.L. Zhang, Y.D. Yan, W. Han, Y. Xue, X.Y. Jing, X.L. Liu, S.S. Wang and X.M. Zhang, Electrochem., 77, 699 (2009); doi:10.5796/electrochemistry.77.699.

Y.D. Yan, M.L. Zhang, Y. Xue, W. Han, D.X. Cao and L.Y. He, J. Appl. Electrochem., 39, 455 (2009); doi:10.1007/s10800-008-9693-1.

A.M. Martinez, B. Borresen, G.M. Haarberg, Y. Castrillejo and R. Tunold, J. Electrochem. Soc., 151, C508 (2004); doi:10.1149/1.1758814.

Y. Castrillejo, A.M. Martinez, R. Pardo and G.M. Haarberg, Electrochim. Acta, 42, 1869 (1997); doi:10.1016/S0013-4686(96)00399-4.

Y. Yan, M. Zhang, W. Han, Y. Xue, D. Cao and Y. Yuan, Chem. Lett., 37, 212 (2008); doi:10.1246/cl.2008.212.

A.M. Martinez, B. Borresen, G.M. Haarberg, Y. Castrillejo and R. Tunold, J. Appl. Electrochem., 34, 1271 (2004); doi:10.1007/s10800-004-1761-6.

T. Store, G.M. Haarberg and R. Tunold, J. Appl. Electrochem., 30, 1351 (2000); doi:10.1023/A:1026578713427.

Issue

Vol. 26 No. 13 (2014): Vol 26 Issue 13

Determination of Diffusion Coefficients of Mg2+ Ions from Molten LiCl-KCl-MgCl2

Corresponding Author(s) : Sang Mun Jeong

Abstract

Keywords

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