Alkaline polymer electrolyte film for zinc-nickel battery and preparation method thereof

Abstract

The invention relates to an alkaline polymer electrolyte film for a zinc-nickel battery and a preparation method thereof. The alkaline polymer electrolyte film is prepared by adopting the following raw materials in parts by weight in steps of mixing, film forming and drying: 1400 to 1600 parts of deionized water, 280 to 320 parts of polymer, 7 to 9 parts of surface active agent, 28.1 to 32.5 parts of plasticizer, 10 to 14 parts of variable starch, 0.5 to 0.7 parts of defoaming agent and 280 to 320 parts of alkali, wherein the polymer is any one or two of PVA and PEO, and the alkali is KOH or NaOH. The alkaline polymer electrolyte film applicable to the zinc-nickel battery is high in electric conductivity, good in mechanical performance, unlikely to lose water in the air and good in flexibility. The preparation method of the alkaline polymer electrolyte film for the zinc-nickel battery is easy for realizing the industrialized and automatic production and low in processing cost, and the prepared alkaline polymer electrolyte film is stable in weight and excellent in electric conductivity and mechanical performance.

Description

technical field [0001] The invention relates to an alkaline polymer electrolyte film for a zinc-nickel battery and a preparation method thereof, belonging to the technical field of polymer electrolyte film preparation. Background technique [0002] Zinc-nickel batteries have the advantages of high theoretical specific energy, high theoretical voltage, high specific power, wide operating temperature range, low cost, and no pollution. They have become one of the important candidates for the development of secondary batteries. Occupying the market, the main reason is that the zinc electrode is prone to deformation and dendrite problems during charging and discharging, which leads to its short service life. [0003] At present, zinc-nickel battery researchers have adopted many improvement methods for problems such as deformation, dendrites, and corrosion of zinc electrodes, including electrode and electrolyte additives, but with little success. The goal has begun to shift to sol...

AI Technical Summary

Problems solved by technology

At present, the research on polymer electrolytes is mostly focused on the application of lithium-ion batteries. The polymer electrolytes studied mainly include PEO, PVA, PAA and other systems. This type of research is currently mainly concentrated in the laboratory stage, which is far from industrial production and There is still a certain distance to be applied, and the main problem is that the ionic conductivity is not high enough and high conductivity and good mechanical properties cannot be satisfied at the same time.