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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

MULTIPHYSICS-COUPED FIELD ANALYSIS FOR ZINC-NICKEL SINGLE- FLOW BATTERY CELL STACK

Get access (open in a dialog) DOI: 10.1615/IHTC16.ecl.023229
pages 4141-4150

要約

By taking zinc-nickel single flow battery cell stack as the research object, a three-dimensional simulation model is established for coupling flow, mass transfer, charge conservation and chemical reaction kinetics. Numerical simulation is initially conducted to obtain the electrolyte flow, mass transfer and component concentration distribution in the cell stack. Then, the effects of electrolyte flow on flow field uniformity, concentration polarization distribution and electrochemical performance are studied and the effects of different ion inlet concentrations on concentration polarization and electrochemical performance are also analyzed. The results show that increasing the electrolyte inlet flow rate and the ion inlet concentration can improve the ionic concentration polarization and electrochemical performance. The optimal inlet flow rate during simulation was 0.06 m/s, the suitable zincate ion inlet concentration was 500 mol/m3, and the hydroxide ion inlet concentration was 8000 mol/m3.