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Tab Design Based on the Internal Distributed Properties in a Zinc–Nickel Single-Flow Battery by Rui Zhou; Shouguang Yao; Yunhui Zhao; Jie Cheng is a Engineering article available to read on EtoBox.

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The distribution of physicochemical properties inside the battery, which is difficult to measure using experimental methods, has a significant impact on the performance of the battery. Therefore, based on the numerical simulation method, this paper established a three-dimensional transient model of a zinc-nickel single-flow battery considering the tabs for the first time. The model is based on universal conservation laws (mass, momentum, and charge) coupled with global reaction dynamics. On this basis, the influence of tabs on the physicochemical property distribution in the battery was studied, including the change of ion concentration, current density, overpotential, and local state of charge distribution with time and space. Based on overpotential distribution and ion concentration distribution, the effects of tab size, position, and number on voltage loss and ion concentration distribution were investigated. The results show that the extreme values of various physicochemical properties always appear in the region near the tabs, and the chemical reaction rate in the region near the positive electrode tab decreases significantly in the later period of discharge. The voltage loss

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Author

Rui Zhou; Shouguang Yao; Yunhui Zhao; Jie Cheng

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Engineering (Physical Sciences)