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

An electrolyte film, zinc-nickel battery technology, applied in nickel storage batteries, electrolyte immobilization/gelling, alkaline storage batteries, etc., can solve the problems of insufficient ionic conductivity, high conductivity and good mechanical properties cannot be satisfied at the same time, Achieve high electrical conductivity, excellent mechanical properties and good flexibility

Active Publication Date: 2017-10-13
顾程松 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Alkaline polymer electrolyte film for zinc-nickel batteries, said alkaline polymer electrolyte film is processed by the following raw materials by weight through batching, film formation and drying: 1400 parts of deionized water, 280 parts of polymer, 7 parts of surfactant, 2.5 parts of emulsifier, 28.1 parts of plasticizer, 1.3 parts of binder, 10 parts of modified starch, 0.5 part of defoamer, alkali 280, the polymer is PVA, and the alkali is KOH, The specific processing steps of the alkaline polymer electrolyte film are as follows:

[0039] S1: Add 1200-1300 parts of deionized water, heat to boiling, start stirring, add the formula amount of polymer, 0.3 parts of defoamer, stir for more than 1 hour, and then add the remaining amount of deionized water;

[0040]S2: Add emulsifiers, plasticizers, and binders in the prescribed amount, and stir for at least 10 minutes, wherein the binders are dissolved in 5 parts of boiling water before adding;

[0041] S3: Dissolve the...

Embodiment 2

[0049] Alkaline polymer electrolyte film for zinc-nickel batteries, the composition of raw materials is as follows:

[0050] 1600 parts of deionized water

[0051] 320 parts of PEO with a molecular weight of 150,000

[0052] Surfactant (stearic acid) 9 parts

[0053] Emulsifier (soy lecithin) 3.0 parts

[0054] Plasticizer (propylene glycol) 32.5 parts

[0055] Binder (phenolic resin) 1.6 parts

[0056] Modified starch 14 parts

[0057] 0.7 parts of defoamer

[0058] 320 parts of NaOH,

[0059] The steps of the preparation method of the alkaline polymer electrolyte film in Example 2 are the same as those in Example 1, and the obtained alkaline polymer electrolyte film is 52 g / ㎡, 150 μm in thickness and less than or equal to 10% moisture.

Embodiment 3

[0061] Alkaline polymer electrolyte film for zinc-nickel batteries, the composition of raw materials is as follows:

[0062] 1500 parts of deionized water

[0063] 300 copies of PVA

[0064] Surfactant 8 parts

[0065] Emulsifier 2.8 parts

[0066] Plasticizer 28.9 parts

[0067] Binder 1.5 parts

[0068] Modified starch 12 parts

[0069] 0.6 parts of defoamer

[0070] KOH or NaOH 300 parts

[0071] Wherein the surfactant is lecithin, the emulsifier is monoglyceride laurate, the plasticizer is dibutyl phthalate, and the binder is urea aldehyde resin.

[0072] The molecular weight of the PVA is 84000-89000, the average degree of polymerization is 1700-1800, the pH value is 5-7, the viscosity is 21-26cps, and the alkalization degree is 86-89.

[0073] The steps of the preparation method of the alkaline polymer electrolyte film in Example 3 are the same as those in Example 1, and the alkaline polymer electrolyte film with a weight of 50 g / ㎡, a thickness of 100 μm, and a m...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/26H01M10/30
CPCH01M10/26H01M10/30H01M2300/0085Y02E60/10
Inventor 顾程松
Owner 顾程松
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