Research on Assessment Parameters of Adsorption Properties in Cation Exchange Membranes for all Vanadium Redox Flow Battery

Jin Qing Chen; Hong Ling Lv; Bao Guo Wang

doi:10.4028/www.scientific.net/AMM.687-691.4269

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 687-691Research on Assessment Parameters of Adsorption...

Research on Assessment Parameters of Adsorption Properties in Cation Exchange Membranes for all Vanadium Redox Flow Battery

Abstract:

The relative adsorption coefficient, a novel parameter was introduced to describe the dominant adsorption ability of ions in cation membrane for all vanadium redox flow battery instead of traditional selectivity coefficient. The parameter as a function of membrane property and vanadium ions in membrane was derived from the relative potential differences in membrane between an isothermal adsorption and an ideal equivalent adsorption. The adsorption isotherms of three kinds of commercial membranes were measured for VO²⁺/H⁺ electrolyte system. The results show the reasonable rules that the relative adsorption coefficients increase as the VO²⁺ contents are increased whereas decrease as the H⁺ contents are increased in electrolyte.

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Periodical:

Applied Mechanics and Materials (Volumes 687-691)

Pages:

4269-4272

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.687-691.4269

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Online since:

November 2014

Authors:

Jin Qing Chen, Hong Ling Lv*, Bao Guo Wang

Keywords:

Adsorption Equilibrium, All Vanadium Redox Flow Battery, Membrane, Relative Adsorption Coefficient, Selectivity Coefficient

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* - Corresponding Author

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