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Negative electrode material for zinc-nickel battery, preparation method thereof, and battery using the same

A negative electrode material, zinc-nickel technology, which is applied in the field of zinc-nickel battery negative electrode materials and its preparation, can solve the problems of low gram capacity, poor structural stability, and reduction, and achieve the goals of reducing hydrogen evolution reaction, improving conductivity, and long cycle life Effect

Active Publication Date: 2020-03-10
XINXIANG CHAOLI NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a zinc-nickel secondary battery negative electrode material with excellent cycle performance and its preparation method. Due to the problem of relatively poor structural stability, the use of this new negative electrode material can reduce the deformation of the zinc electrode, inhibit the growth of zinc dendrites and improve the stability of the zinc negative electrode in alkaline solution, which greatly improves the performance of the zinc-nickel secondary battery. cycle life

Method used

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  • Negative electrode material for zinc-nickel battery, preparation method thereof, and battery using the same
  • Negative electrode material for zinc-nickel battery, preparation method thereof, and battery using the same
  • Negative electrode material for zinc-nickel battery, preparation method thereof, and battery using the same

Examples

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Effect test

Embodiment 1

[0031] [Zn 0.8 Bi 0.2 (OH) 2 ]·[(CO 3 2− ) 0.15 ·H 2 O] Preparation of anode materials

[0032] Dissolve bismuth nitrate in nitric acid solution, add zinc nitrate, in which the molar ratio of bismuth nitrate and zinc nitrate is controlled as (Zn / Bi=4), then add deionized water to prepare zinc bismuth with a molar concentration of 1.5mol / L Compound salt solution; dissolving potassium hydroxide in deionized water to prepare a potassium hydroxide solution with a molar concentration of 3mol / L; adding the potassium hydroxide solution dropwise to the zinc-bismuth compound salt solution under the reaction conditions of 25°C, continuously Stir until the pH of the mixed solution is 9 after the reaction is completed; transfer the mixed solution to a hydrothermal reaction kettle for hydrothermal treatment at 120°C for 20 hours, cool to room temperature, filter, wash, and dry to obtain a white powder; transfer the obtained white powder into the prepared sodium carbonate solution wi...

Embodiment 2

[0034] [Zn 0.6 Bi 0.4 (OH) 2 ]·[(BO 2 − ) 0.15 ·H 2 O] Preparation of anode materials

[0035] Dissolve bismuth sulfate in nitric acid solution, add zinc sulfate, wherein the molar ratio of bismuth sulfate and zinc sulfate is controlled as (Zn / Bi=3 / 2), and then add deionized water to make a molar concentration of 2.0mol / L Zinc-bismuth compound salt solution; dissolving sodium hydroxide in deionized water to prepare a sodium hydroxide solution with a molar concentration of 2mol / L; adding the sodium hydroxide solution dropwise to the zinc-bismuth compound salt solution under the reaction conditions of 30°C , stirring continuously until the pH of the mixed solution was 8 after the reaction was completed; the mixed solution was transferred to a hydrothermal reaction kettle for hydrothermal treatment at 130°C for 15 hours, cooled to room temperature, filtered, washed, and dried to obtain a white powder; the obtained white The powder was transferred to a prepared solution of ...

Embodiment 3

[0037] [Zn 0.8 Bi 0.2 (OH) 2 ]·[(BO 2 − ) 0.15 (CO 3 - ) 0.05 2H 2 O] Preparation of anode materials

[0038] Dissolve bismuth chloride in nitric acid solution, add zinc chloride, in which the molar ratio of bismuth nitrate and zinc nitrate is controlled to be (Zn / Bi=4), then add deionized water to make a molar concentration of 1.5mol / L Zinc-bismuth compound salt solution; dissolving potassium hydroxide in deionized water to prepare a potassium hydroxide solution with a molar concentration of 2 mol / L; adding the potassium hydroxide solution dropwise to the zinc-bismuth compound salt solution under the reaction conditions of 35°C , stirred continuously until the pH of the mixed solution was 10 after the reaction was completed; transferred the mixed solution to a hydrothermal reaction kettle for hydrothermal treatment at 130°C for 15 hours, cooled to room temperature, filtered, washed, and dried to obtain a white powder; the obtained white The powder was transferred to...

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Abstract

The invention discloses a zinc-nickel battery anode material and its preparation method and a battery using the anode material, and belongs to the technical field of alkaline secondary battery anode materials. The technical scheme of the invention is characterized in that the zinc-nickel secondary battery anode material is composed of lamellar hydroxide [ZnxBi1-x(OH)2].[(Aa-)y.mH2O] or composite of lamellar hydroxide [ZnxBi1-x(OH)2].[(Aa-)y.mH2O] and graphene, wherein 0.8> / =x> / =0.4, y>0 and m>0. The invention also discloses a preparation method of the zinc-nickel battery anode material and application thereof in zinc-nickel secondary battery negative plates. A zinc-nickel secondary battery prepared by using the novel anode material of the invention has the advantages of high specific energy, high specific power and long cycle life.

Description

technical field [0001] The invention belongs to the technical field of negative electrode materials for alkaline secondary batteries, and in particular relates to a zinc-nickel battery negative electrode material, a preparation method thereof and a battery using the negative electrode material. Background technique [0002] As a new type of alkaline secondary battery, zinc-nickel battery has unique advantages such as large specific energy, high specific power and high cost performance, and is widely used in various energy storage devices. The zinc-nickel secondary battery market is currently in rapid development. However, one problem with this type of battery is that the cycle life is poorer than other secondary batteries. This is mainly due to the problems of deformation and dendrites in the zinc negative electrode used in the zinc-nickel secondary battery, resulting in a decrease in its cycle performance. In response to this problem, scientific researchers have done a lot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/583H01M4/62H01M4/36H01M4/48H01M4/58H01M10/30
CPCH01M4/362H01M4/48H01M4/5825H01M4/583H01M4/625H01M10/30Y02E60/10
Inventor 上官恩波李耀李林倩李晶常照荣李全民
Owner XINXIANG CHAOLI NEW ENERGY
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