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A kind of preparation method of alkaline secondary zinc-nickel storage battery

A nickel storage battery and secondary zinc technology, applied in the field of preparation of alkaline secondary zinc-nickel storage batteries, can solve the problems of poor storage performance, large self-discharge, etc., and achieve the effects of excellent performance, improved life, and stable quality

Inactive Publication Date: 2016-01-20
HUNAN SCI & TECH RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to overcome the deficiencies of the prior art, solve the factors restricting its scale application such as the cycle life period of zinc-nickel batteries, large self-discharge and poor storage performance, and provide a preparation method for alkaline secondary zinc-nickel batteries

Method used

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  • A kind of preparation method of alkaline secondary zinc-nickel storage battery
  • A kind of preparation method of alkaline secondary zinc-nickel storage battery
  • A kind of preparation method of alkaline secondary zinc-nickel storage battery

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Effect test

Embodiment 1

[0026] The preparation method of described alkaline secondary zinc-nickel accumulator comprises the steps:

[0027] (1) Gel preparation: prepare a KOH solution with a KOH content of 6mol / L, add lithium magnesium silicate and CMC to the KOH solution, stir evenly, and prepare a gel for later use; the CMC and KOH in the KOH solution The weight ratio is 1:5, and the weight ratio of lithium magnesium silicate to CMC is 0.5:1;

[0028] (2) Electrode plate wrapping: Wrap the zinc electrode plate with a sulfonated or grafted and hydrophilically modified polypropylene diaphragm with a thickness of 0.04mm to obtain the wrapped zinc electrode plate; use PP with a thickness of 0.14mm / PE blended separator wraps the nickel electrode plate to obtain the wrapped nickel electrode plate;

[0029] (3) Battery assembly: assemble the wrapped zinc electrode plate and the wrapped nickel electrode plate into a battery, and fill the battery with the gel prepared in step (1).

[0030] Wherein, the p...

Embodiment 2

[0033] The preparation method of described alkaline secondary zinc-nickel accumulator comprises the steps:

[0034] (1) Gel preparation: Prepare a KOH solution with a KOH content of 5.5 mol / L, add magnesium aluminum silicate and PVA to the KOH solution, stir evenly, and prepare a gel for later use; the PVA and KOH in the KOH solution The weight ratio of magnesium aluminum silicate to PVA is 0.3:1;

[0035] (2) Electrode plate wrapping: Wrap the zinc electrode plate with a sulfonated or grafted and hydrophilically modified polypropylene diaphragm with a thickness of 0.06mm to obtain the wrapped zinc electrode plate; use a PP diaphragm with a thickness of 0.1mm The diaphragm wraps the nickel electrode plate to obtain the wrapped nickel electrode plate;

[0036] (3) Battery assembly: Assemble the included zinc electrode plate and wrapped nickel electrode plate into a battery, and fill the battery with the gel prepared in step (1).

[0037] Wherein, the particle size of magnesiu...

Embodiment 3

[0040] The preparation method of described alkaline secondary zinc-nickel accumulator comprises the steps:

[0041] (1) Gel preparation: prepare a KOH solution with a KOH content of 6.5mol / L, add lithium magnesium carbonate and sodium polyacrylate to the KOH solution, stir evenly, and prepare a gel for later use; the sodium polyacrylate and KOH The weight ratio of KOH in the solution is 1:5, and the weight ratio of lithium magnesium carbonate and sodium polyacrylate is 0.5:1;

[0042] (2) Electrode plate wrapping: Wrap the zinc electrode plate with a sulfonated or grafted and hydrophilically modified polypropylene diaphragm with a thickness of 0.04 to obtain a wrapped zinc electrode plate; use a 0.14mm thick PP / The PE blended separator wraps the nickel electrode plate to obtain the wrapped nickel electrode plate;

[0043] (3) Battery assembly: Assemble the included zinc electrode plate and wrapped nickel electrode plate into a battery, and fill the battery with the gel prepa...

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Abstract

The invention discloses a preparation method of an alkaline secondary zinc-nickel storage battery. The method adopts an inorganic organic compound thixotropy alkaline gel electrolyte to alleviate the dissolution of a zinc electrode plate and lower the zinc dendrite generating probability; the method adopts a two-diaphragm combining manner for combining a polypropylene diaphragm subjected to grafting or sulphonation treatment and a PP / PE blending diaphragm, wherein the modified polypropylene diaphragm is adopted to effectively prevent zinc ions from enrichment in an imbibition diaphragm, and the blending type diaphragm is adopted to effectively keep the imbibition quantity of the diaphragm and avoid a condition that the diaphragm lacks of a solution so that the internal resistance of the battery is increased; the organic or carbon source coating treatment is preformed on zinc oxide, coating carbon is used for one or more coating treatment, and thus the conductivity and the combination property of the material are improved; nanometer sub-titanium oxide porcelain powder is adopted as a zinc electrode plate addition agent and is good in conductivity and electrochemical stability, and thus the property of a zinc electrode plate is remarkably improved by adding the material.

Description

technical field [0001] The invention relates to a preparation method of an alkaline secondary zinc-nickel storage battery. Background technique [0002] Zinc-nickel batteries have high specific energy (60-80Wh / kg), abundant sources of materials and cheap prices, and are environmentally friendly in the process of preparation, use and recycling, and do not cause environmental pollution. It is a secondary power source with broad prospects (alkali permanent secondary zinc-nickel battery). [0003] Zinc-nickel batteries have been developed for over a hundred years, but the charge-discharge cycle life of zinc-nickel batteries is relatively short, because the discharge product of the zinc negative electrode has a high solubility in the potassium hydroxide electrolyte, and uneven zinc deposition occurs during charging. The shape of the zinc negative electrode changes after charging and discharging for many times, the periphery of the electrode plate becomes thinner, the middle thic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/30
CPCH01M4/624H01M4/625H01M4/661H01M10/26H01M10/28H01M2300/0085H01M50/411Y02E60/10
Inventor 李方李新堂桑商斌
Owner HUNAN SCI & TECH RES & DEV CENT
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