A fractal study for the effective electrolyte diffusion through charged porous media
| Autor: | Liang Luo, Mingchao Liang, Chengguo Fu, Zhankui Wang, Boqi Xiao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Mechanical Engineering Thermodynamics 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal diffusivity 01 natural sciences Physics::Geophysics 010305 fluids & plasmas Electrokinetic phenomena Fractal 0103 physical sciences Zeta potential Diffusion (business) 0210 nano-technology Porosity Porous medium |
| Zdroj: | International Journal of Heat and Mass Transfer. 137:365-371 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2019.03.141 |
| Popis: | Electrolyte diffusion in electrolyte solutions exists in various areas including rechargeable batteries, soil physics and chemical engineering. In this paper, a fractal model based on the capillary model and fractal theory of porous media is proposed to quantify the effective electrolyte diffusivity in porous media with consideration of the electrical double layer (EDL) effects. The present model explicitly relates to the micro-structural parameters of porous media and electrokinetic parameters. To validate this model, a comparison is carried out with experimental data and semi-analytical model results, and yields satisfying agreement. Besides, the influences of the parameters (the porosity, equivalent particle diameter, ratio of the minimum pore radius to the maximum pore radius, molar concentration, zeta potential, and dimensionless parameter β ) are discussed in details. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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