Hydrophilic processing method for zinc nickle alkaline accumulator diaphragm

A technology for hydrophilic treatment and storage batteries, which is applied in battery pack parts, circuits, electrical components, etc., can solve the problems of inability to apply zinc-nickel storage batteries, and achieve good hydrophilic liquid absorption performance, improved cycle life, and good air permeability. Effect

Inactive Publication Date: 2009-07-01
HENAN HUANYU GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this type of separator does not undergo the above treatment, it will be impossible to improve the technical performan

Method used

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  • Hydrophilic processing method for zinc nickle alkaline accumulator diaphragm
  • Hydrophilic processing method for zinc nickle alkaline accumulator diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] This example illustrates a method of making a non-hydrophilic membrane hydrophilic:

[0049] a. Preparation of hydrophilic treatment solution

[0050] According to the following weight percentages:

[0051] Hydrophilic surfactant: C 8 H 17 CH 2 COONa 0.1%

[0052] Oxidizer: hydrogen peroxide 1%

[0053] Ketones: Acetone 3%

[0054] Alcohols: 3% isopropanol

[0055] Deionized water: balance

[0056] b. The non-hydrophilic diaphragm is completely immersed in the hydrophilic treatment solution for 5 minutes;

[0057] c. Clean the treated diaphragm with deionized water until the PH value reaches 7;

[0058] d. Preparation of coating solution

[0059] According to the following weight percentages:

[0060] Additive to inhibit zinc dendrite growth: C 8H 17 CH 2 NH 3 ·HCl 6%

[0061] Deionized water: balance

[0062] e. The diaphragm is completely immersed in the coating solution for 2 minutes;

[0063] f. Dry at 65℃ or dry naturally.

[0064] Note: This ratio o...

Example Embodiment

[0067] Example 2

[0068] This example illustrates a method of making a non-hydrophilic membrane hydrophilic:

[0069] a. Preparation of hydrophilic treatment solution

[0070] According to the following weight percentage:

[0071] Hydrophilic surfactant: C 9 H 19 CH 2 OSO 3 Na 6%

[0072] Oxidizer: sodium hypochlorite 3%

[0073] Ketones: Acetone 2%

[0074] Alcohols: 2% isopropanol

[0075] Alkali: potassium hydroxide 0.5%

[0076] Deionized water: balance

[0077] b. The non-hydrophilic diaphragm is completely immersed in the hydrophilic treatment solution for 20 minutes;

[0078] c. Clean the treated diaphragm with deionized water until the PH value reaches 7;

[0079] d. Preparation of coating solution

[0080] According to the following weight percentages:

[0081] Additive to inhibit zinc dendrite growth: C 8 H 17 CH 2 NH3·HCl 6%

[0082] Deionized water: balance

[0083] e. The diaphragm is completely immersed in the coating solution for 5 minutes;

[0084] f. Dry at 75℃ o...

Example Embodiment

[0086] Example 3

[0087] This example illustrates a method of making a non-hydrophilic membrane hydrophilic:

[0088] a. Preparation of hydrophilic treatment solution

[0089] According to the following weight percentage:

[0090] Hydrophilic surfactant: C 12 H 25 C 6 H 5 SO 3 K 16%

[0091] Oxidizer: hydrogen peroxide 1%

[0092] Ketones: Acetone 2%

[0093] Alcohols: ethanol 3%

[0094] Deionized water: balance

[0095] b. The non-hydrophilic diaphragm is completely immersed in the hydrophilic treatment solution for 30 minutes;

[0096] c. Clean the treated diaphragm with deionized water until the PH value reaches 7;

[0097] d. Preparation of coating solution

[0098] According to the following weight percentage:

[0099] Additive to inhibit zinc dendrite growth: tetrabutyl amine bromide 0.1%

[0100] Deionized water: balance

[0101] e. The diaphragm is completely immersed in the coating solution for 1 min;

[0102] f. Dry at 85℃ or dry naturally.

[0103] Note: This ratio of...

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Abstract

The invention provides a hydrophilic treatment method of Zn-Ni alkaline storage battery diaphragm, which comprises the following steps: preparing a hydrophilic treatment solution and a coating layer solution; soaking a hydrophobic polypropylene diaphragm, a polyethylene diaphragm, a polysulfone diaphragm and a polyvinyl chloride diaphragm in the hydrophilic treatment solution and the coating layer solution; washing the diaphragm with water; and drying in an oven or in air; or directly applying the coating layer solution on a hydrophilic polypropylene diaphragm, a polyethylene diaphragm, a polysulfone diaphragm, a polyvinyl chloride diaphragm and cellulose acetate diaphragm. The diaphragm treatment method has the advantages that the diaphragm subjected to hydrophilic treatment has good air permeability and hydrophilic solution adsorption performance; and the diaphragm treated by the coating layer is applied with an additive capable of stopping or suppressing the growth of zinc dendrites, so that the Zn electrode has more stable performance in circle use and prolonged circle life, thereby improving the circle life of the Zn-Ni battery and widening the use range of the Zn-Ni battery.

Description

technical field [0001] The invention relates to a battery diaphragm treatment technology, in particular to a method for hydrophilic treatment of a zinc-nickel alkaline storage battery diaphragm. Background technique [0002] In zinc-nickel alkaline storage battery technology, traditionally used separators for alkaline storage batteries are vinylon, nylon, non-woven fabrics, and alkali-resistant tissue paper. Since the zinc electrode in the zinc-nickel battery has the ability to grow zinc dendrites, the original vinylon, nylon, non-woven fabric, alkali-resistant tissue paper, etc. have been far from meeting the needs of the zinc-nickel battery. Zinc electrodes need microporous, good hydrophilic properties, strong alkali and corrosion resistance, oxidation resistance, good mechanical strength and ion conductivity, and separators that can block or inhibit the growth of zinc dendrites. This type of separator is often PP, PE, PSF, PVC separator with very small pores. This type o...

Claims

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Application Information

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IPC IPC(8): H01M2/14H01M50/403H01M50/411
CPCY02E60/12Y02E60/10
Inventor 李文漫王明煜李永创赵林治胡云锋
Owner HENAN HUANYU GROUP
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