In-situ investigation of vanadium ion transport in redox flow battery

Flow batteries with vanadium and iron redox couples as the electroactive species are employed to investigate the transport behavior of vanadium ions in the presence of an electric field. It is shown that the electric field accelerated the positive-to-negative and reduced the negative-to-positive transport of vanadium ions in the charging process and affected the vanadium ion transport in the opposite way during discharge. In addition, a method is designed to differentiate the concentration-gradient-driven vanadium ion diffusion and electric-field-driven vanadium ion migration. A simplified mathematical model is established to simulate the vanadium ion transport in real charge–discharge operation of the flow battery. The concentration gradient diffusion coefficients and electric-migration coefficients of V2+, V3+, VO2+, and VO2+ across a NAFION® membrane are obtained by fitting the experimental data.

[1]  R. Lichtenthaler,et al.  Sorption isotherms of vanadium with H3O+ ions in cation exchange membranes , 1998 .

[2]  Jun Liu,et al.  Electrochemical energy storage for green grid. , 2011, Chemical reviews.

[3]  G. Graff,et al.  A Stable Vanadium Redox‐Flow Battery with High Energy Density for Large‐Scale Energy Storage , 2011 .

[4]  Julio Pellicer,et al.  On the nature of the diffusion potential derived from Nernst-Planck flux equations by using the electroneutrality assumption , 1987 .

[5]  Anthony G. Fane,et al.  New All‐Vanadium Redox Flow Cell , 1986 .

[6]  Chenxi Sun,et al.  Investigations on transfer of water and vanadium ions across Nafion membrane in an operating vanadium redox flow battery , 2010 .

[7]  R. Lichtenthaler,et al.  Transport properties of vanadium ions in cation exchange membranes:: Determination of diffusion coefficients using a dialysis cell , 1998 .

[8]  Maria Skyllas-Kazacos,et al.  Membrane stability studies for vanadium redox cell applications , 2004 .

[9]  M. Mench,et al.  Redox flow batteries: a review , 2011 .

[10]  Maria Skyllas-Kazacos,et al.  Progress in Flow Battery Research and Development , 2011 .

[11]  Maria Skyllas-Kazacos,et al.  Investigation of the V(V)/V(IV) system for use in the positive half-cell of a redox battery , 1985 .

[12]  Jun Liu,et al.  Towards understanding the poor thermal stability of V5+ electrolyte solution in Vanadium Redox Flow Batteries , 2011 .

[13]  Maria Skyllas-Kazacos,et al.  A study of the V(II)/V(III) redox couple for redox flow cell applications , 1985 .

[14]  Jianguo Liu,et al.  A significantly improved membrane for vanadium redox flow battery , 2010 .

[15]  Chenxi Sun,et al.  Preparation and characterization of Nafion/SPEEK layered composite membrane and its application in vanadium redox flow battery , 2008 .

[16]  Zhenguo Yang,et al.  Cycling performance and efficiency of sulfonated poly(sulfone) membranes in vanadium redox flow batteries , 2010 .

[17]  B. Dunn,et al.  Electrical Energy Storage for the Grid: A Battery of Choices , 2011, Science.