Abstract
According to the structure and working characteristics of zinc-nickel single-flow battery stack cell, this paper proposes a pore-size analysis model for internal mass transfer and chemical reaction of positive electrode to describe liquid-phase mass transfer, solid-phase mass transfer, and electrochemical reaction. The lattice Boltzmann method was used to simulate the steady-state reaction under constant current charging. The distribution of the concentration of liquid-phase reaction ions, the proton concentration of the solid phase, and the reaction current density were determined. The influence of electrolyte flow velocity and constant current charge-current density on the electrode reaction was further explored.
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