Zinc electrode containing combined zinc corrosion inhibitor and zinc-nickel battery using zinc electrode

Abstract

The invention provides a zinc electrode containing a combined zinc corrosion inhibitor. The material of the zinc electrode comprises the following components in percentage by mass: 0.001-1% of an organic corrosion inhibitor; 0.001 to 1% of indium oxide; 0-5% of bismuth oxide; 0.1 to 30% of conductive ceramic; 0.5%-5% of PTFE (polytetrafluoroethylene); 0.1%-3% of a thickening agent; the balance is zinc oxide; wherein an F-containing surfactant is selected as the organic corrosion inhibitor. The invention also provides a zinc-nickel battery of the zinc electrode and a zinc-nickel battery simultaneously applying the organic corrosion inhibitor and indium oxide. The zinc electrode containing the combined zinc corrosion inhibitor has the advantages of high capacity retention ratio, strong charge retention capability and capability of inhibiting self discharge.

Description

technical field [0001] The invention relates to the technical field of zinc electrodes, in particular to a zinc electrode containing a combined zinc corrosion inhibitor and a zinc-nickel battery using the same. Background technique [0002] Zinc-nickel batteries have no memory effect, moderate operating voltage and wide operating temperature range. The zinc-nickel battery adopts water-based electrolyte, which is safe and reliable, has good high-rate discharge performance, and can be quickly charged and discharged. The electrode materials are non-toxic, harmless and environmentally friendly, and the production, use and recycling of batteries are safe and environmentally friendly. Therefore, zinc-nickel batteries have a wide range of applications, especially in applications with high requirements for safety, reliability and environmental adaptation, such as high-speed trains, airplanes, and battlefield environments. Zinc-nickel batteries are one of the best power candidates. ...

AI Technical Summary

Problems solved by technology

However, the negative electrode active material of zinc-nickel batteries has poor conductivity and is easily soluble in alkali solution, which leads to problems such as zinc electrode deformation and zinc dendrites, which in turn leads to a decrease in battery performance and poor cycle stability.

[0003] Zinc-nickel batteries use aqueous lye as the electrolyte, and the negative electrode is a zinc electrode. Metal zinc is thermodynamically unstable in the lye. Although the hydrogen evolution overpotential of zinc is high, the self-discharge of the zinc negative electrode is still very serious, even Affect the shelf life of the battery, and affect the use of the battery in scenarios that often need to be put on hold

For example, the power performance of the zinc-nickel battery is very good, suitable for starting the car, but due to the large self-discharge, its application in this field is affected to a certain extent

Although a lot of research work has been reported, most of the zinc-nickel batteries on the market have relatively large self-discharge, and it is still necessary to continue to improve the charge retention capacity of the battery and suppress self-discharge.

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