Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method]

Jorne, J; Wing-Tat, H

doi:10.1149/1.2124051

Title: Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method]

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Abstract

Migration of zinc-ion species affects the local zinc chloride concentration and solution density in the electrolyte adjacent to the zinc electrode and thereby influences natural convection at this electrode during both charge and discharge. This work presents experimentally measured transference numbers for ionic-zinc species in aqueous solutions containing 1.5-3m ZnCl/sub 2/+0-4m KCl+0-3m NaCl+0-0.4m HCl at 30/degree/C using the Hittorf method. Negative transference numbers for zinc are obtained in most mixed-salt solutions with minima of -0.2 to -0.3 occurring in the chloride ion concentration range of 6-8m. The transference number of zinc depends generally on the total chloride content. The effect of the cations is small, noticeable only at higher concentration, and follows the order of their ionic mobilities. The data support the presence of anionic zinc complexes such as ZnCl/sub 3//sup -/ and ZnCl/sub 4//sup 2-/, which account for the negative transference numbers. 41 refs.

Authors:: Jorne, J; Wing-Tat, H

Publication Date:: Sat May 01 00:00:00 EDT 1982

Research Org.:: Wayne State Univ, Detroit, MI, USA

OSTI Identifier:: 6660481

Resource Type:: Journal Article

Journal Name:: J. Electrochem. Soc.; (United States)

Additional Journal Information:: Journal Volume: 129:5

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; ZINC-CHLORINE BATTERIES; ELECTROLYTES; MASS TRANSFER; ION MOBILITY; IONIC CONDUCTIVITY; NATURAL CONVECTION; ZINC; ZINC CHLORIDES; CHLORIDES; CHLORINE COMPOUNDS; CONVECTION; ELECTRIC BATTERIES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; METAL-GAS BATTERIES; METALS; MOBILITY; PARTICLE MOBILITY; PHYSICAL PROPERTIES; ZINC COMPOUNDS; ZINC HALIDES; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries

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                    Jorne, J, and Wing-Tat, H. Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method].  United States: N. p., 1982. 
        Web.  doi:10.1149/1.2124051.

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                    Jorne, J, & Wing-Tat, H. Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method].  United States.  https://doi.org/10.1149/1.2124051

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                    Jorne, J, and Wing-Tat, H. 1982.  
        "Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method]".  United States.  https://doi.org/10.1149/1.2124051.

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@article{osti_6660481,

  title        = {Transference numbers of zinc in zinc-chloride battery electrolytes. [The Hittorf method]},

  author       = {Jorne, J and Wing-Tat, H},

  abstractNote = {Migration of zinc-ion species affects the local zinc chloride concentration and solution density in the electrolyte adjacent to the zinc electrode and thereby influences natural convection at this electrode during both charge and discharge. This work presents experimentally measured transference numbers for ionic-zinc species in aqueous solutions containing 1.5-3m ZnCl/sub 2/+0-4m KCl+0-3m NaCl+0-0.4m HCl at 30/degree/C using the Hittorf method. Negative transference numbers for zinc are obtained in most mixed-salt solutions with minima of -0.2 to -0.3 occurring in the chloride ion concentration range of 6-8m. The transference number of zinc depends generally on the total chloride content. The effect of the cations is small, noticeable only at higher concentration, and follows the order of their ionic mobilities. The data support the presence of anionic zinc complexes such as ZnCl/sub 3//sup -/ and ZnCl/sub 4//sup 2-/, which account for the negative transference numbers. 41 refs.},

  doi          = {10.1149/1.2124051},

  url          = {https://www.osti.gov/biblio/6660481},
  journal      = {J. Electrochem. Soc.; (United States)},
number       = ,

  volume       = 129:5,

  place        = {United States},

  year         = {Sat May 01 00:00:00 EDT 1982},

  month        = {Sat May 01 00:00:00 EDT 1982}

}

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