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- W3170259664 abstract "Although Ni-Zn battery has high energy density, low material cost and excellent performance in the wide range of temperatures, is still has problems to be solved for EV application. The problems are short cycle life and change of quality with variation of season. In this paper, reaction mechanism in Ni-Zn battery and the factors which affect the mechanism have been studied. Firstly, density of electrolyte was studied. It was observed that a number of OH{sup -} affects the activation potential in the Ni electrode. The longer cycle life and higher capacity were obtained when the concentration of electrolyte(KOH) was 35wt% Secondly, the temperature effect was studied and the vest result in capacity was obtained when the battery was charged at 25{sup o} C. If it is proposed to improve efficiency of EV, the battery has to be charged at the ambient temperature. And thirdly, Ni/Zn electrode has also been tested by cyclic voltammetry measurement. When the Ni electrode is tested at low temperature, more amount of {gamma}-NiOOH is formed. This state caused the swelling in the Ni electrode, which lowers the battery performance. When the battery is charged at higher than 40{sup o} C, gas evaporation was accelerated and charging efficiency dropped. As the temperature rises, the more amount of Zn is soluble in electrolyte as like Zn(OH){sub 4}{sup 2-}, so that the cathode and anode capacity are increased. However, the capacity of Ni-Zn battery decreased at higher than 40{sup o} C because the capacity is controlled by Ni electrode. (author). 13 figs., 3 tabs., 15 figs." @default.
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- W3170259664 date "1996-12-25" @default.
- W3170259664 modified "2023-09-27" @default.
- W3170259664 title "Electrolyte and temperature effect on the performance of Ni-Zn battery" @default.
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