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Alkaline colloidal diaphragm for zinc nickel battery and preparation method thereof, zinc nickel battery

A zinc-nickel battery and diaphragm technology, which is applied in the direction of nickel storage battery, alkaline battery manufacturing, alkaline storage battery, etc., can solve the problems of zinc accumulation, high cost, and deterioration of cycle life of zinc-nickel battery, so as to reduce self-discharge and solve the problem of dissolution , the effect of reducing the migration of zinc

Active Publication Date: 2018-04-13
XINXIANG CHAOLI NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of substances added in the electrolyte is relatively high, and the electrolyte composition still functions in the form of a liquid electrolyte when used. Zinc is very easy to dissolve in the battery system and moves very quickly in the electrolyte system. It is easy to lead to the accumulation of zinc in specific parts of the battery, resulting in a sharp deterioration of the cycle life of zinc-nickel batteries

Method used

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  • Alkaline colloidal diaphragm for zinc nickel battery and preparation method thereof, zinc nickel battery

Examples

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Embodiment 1

[0028] The preparation method of the zinc-nickel battery alkaline colloid separator of the present embodiment comprises the steps:

[0029] 1) Add 0.08kg of PEO (polyethylene oxide), 0.12kg of CMC (carboxymethylcellulose), 0.6kg of sodium dodecylbenzenesulfonate, and 0.1kg of polycaprolactone into 99.10kg of In water, stir for 20 minutes to mix evenly to obtain glue A; the molecular weight of the polycaprolactone is 3000;

[0030] Add 20kg of KOH and 1kg of NaOH into 79kg of water and stir for 8 minutes to prepare glue B;

[0031] 2) Put the polypropylene diaphragm into the glue solution A, soak it for 5 minutes under the condition of a vacuum degree of 0.02Mpa, take it out, put it into the glue solution B, soak it for 5 minutes under the condition of a vacuum degree of 0.02Mpa, take it out, and Let it dry in the air for 5 minutes.

[0032] The zinc-nickel battery of this embodiment includes a positive electrode, a negative electrode, and a diaphragm. The positive electrode ...

Embodiment 2

[0034] The preparation method of the zinc-nickel battery alkaline colloid separator of the present embodiment comprises the steps:

[0035] 1) Add 0.1kg of HEC (hydroxyethyl cellulose), 0.15kg of CMC, 0.4kg of sodium dodecylbenzenesulfonate, and 0.12kg of polycaprolactone into 99.23kg of water, stir for 30 minutes and mix well. Glue A is obtained; the molecular weight of the polycaprolactone is 3000;

[0036] Add 35kg of KOH and 1kg of NaOH into 64kg of water and stir for 10 minutes to prepare glue B;

[0037] 2) Put the polypropylene diaphragm into the glue solution A, soak it for 8 minutes under the condition of a vacuum degree of 0.03Mpa, take it out, put it into the glue solution B, soak it for 10 minutes under the condition of a vacuum degree of 0.03Mpa, take it out, and put it in the glue solution B. Let it dry in the air for 5 minutes.

[0038] The zinc-nickel battery of this embodiment includes a positive electrode, a negative electrode, and a diaphragm. The positive...

Embodiment 3

[0040] The preparation method of the zinc-nickel battery alkaline colloid separator of the present embodiment comprises the steps:

[0041]1) Add 0.05kg of PEO, 0.1kg of CMC, 0.5kg of sodium dodecylbenzenesulfonate, and 0.1kg of branched polycaprolactone into 99.25kg of water, stir for 20 minutes and mix well to obtain glue A ; The molecular weight of the branched polycaprolactone is 3000;

[0042] The branched polycaprolactone is prepared by the following method: add caprolactone, glycerol, and adipic acid into toluene solvent in a molar ratio of 95:2:3, and then add lipase to catalyze it. After reacting for 30 hours, add chloroform, filter and dry to prepare;

[0043] Add 28kg of KOH, 1kg of NaOH, and 0.05kg of LiOH into 70.95kg of water, and stir for 6 minutes to prepare glue B;

[0044] 2) Put the polypropylene diaphragm into glue solution A, soak it for 10 minutes under the condition of vacuum degree of 0.02Mpa, take it out, put it into glue solution B, soak it for 8 mi...

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Abstract

The invention relates to an alkaline colloidal diaphragm for a zinc nickel battery and a preparation method thereof, and a zinc nickel battery, belonging to the technical field of zinc nickel batteries. The preparation method of the alkaline colloid diaphragm for the zinc nickel battery disclosed by the invention comprises the following steps: adding water to a raw material A and mixing evenly toprepare a colloidal solution A, wherein the raw material A comprises a gelatinizing agent and an anionic surfactant, the mass ratio of the gelatinizing agent and the anionic surfactant is 1.5 to 2.5:4to 6, the gelatinizing agent is polyethylene oxide, polyvinyl alcohol and so on, and the anionic surfactant is sodium dodecyl benzene sulfonate; adding water to a raw material B and mixing evenly toprepare a colloidal solution B, wherein the raw material B is one or more of KOH, KF, LiOH and NaOH; soaking the polyolefin diaphragm in the colloidal solution A for 5 to 10min, then soaking in the colloidal solution B for 5 to 10min; and taking out to obtain the alkaline colloid diaphragm for the zinc nickel battery. The colloidal diaphragm disclosed by the invention can greatly improve the cyclelife of the zinc nickel battery.

Description

technical field [0001] The invention relates to an alkaline colloid diaphragm for a zinc-nickel battery, a preparation method thereof, and a zinc-nickel battery, belonging to the technical field of zinc-nickel batteries. Background technique [0002] As a new type of rechargeable battery, zinc-nickel battery has the characteristics of low self-discharge, low cost and relatively high discharge voltage. It can replace nickel-cadmium batteries and nickel-metal hydride batteries within a certain range. With the development of technology, zinc-nickel batteries have good application prospects in the fields of power tools and electric vehicles due to their large discharge rate. [0003] However, zinc-nickel batteries also have certain disadvantages. For example, the dissolution of the zinc negative electrode and the generation of zinc dendrites will lead to a sharp deterioration in the performance of the zinc-nickel battery to a certain extent. In order to reduce the dissolution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M10/28H01M10/26H01M10/30H01M50/403H01M50/417
CPCH01M10/26H01M10/28H01M10/30H01M2300/0068H01M50/403H01M50/446Y02E60/10Y02P70/50
Inventor 王明煜
Owner XINXIANG CHAOLI NEW ENERGY
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