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.

中文翻译：

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锌镍单液电池正极内部反应机理的孔径模拟

摘要

根据锌镍单流电池组电池的结构和工作特点，提出了一种内部传质和正极化学反应的孔径分析模型，用以描述液相传质，固相传质和电化学反应。格子Boltzmann方法用于模拟恒流充电下的稳态反应。测定液相反应离子的浓度分布，固相的质子浓度和反应电流密度。进一步探讨了电解液流速和恒流充电电流密度对电极反应的影响。