Negative plate of secondary nickel-iron battery, preparation method of negative plate and secondary nickel-iron battery of using negative plate

A secondary battery and negative plate technology, which is applied to battery electrodes, nickel storage batteries, alkaline storage batteries, etc., can solve the problems that it is difficult to make up the gap between energy density and power density, and achieve improved hydrogen evolution overpotential, long cycle life, and reduced The effect of the hydrogen evolution reaction

Inactive Publication Date: 2018-02-09
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is still a lot of room for improvement in the capacity performance and rate performance of iron electrodes, and it is still difficult to bridge the gap between them and other alkaline secondary batteries such as zinc-nickel batteries in terms of energy density and power density, and further development is still needed

Method used

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  • Negative plate of secondary nickel-iron battery, preparation method of negative plate and secondary nickel-iron battery of using negative plate
  • Negative plate of secondary nickel-iron battery, preparation method of negative plate and secondary nickel-iron battery of using negative plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] [Zn x Ti y (OH) 2 ]·[(A a- ) n ·mH 2 O](Zn / Ti=4 / 1,A=S 2- ) preparation of additives

[0025]In a fume hood, dissolve the titanium tetrachloride solution in a certain amount of deionized water, add zinc chloride, control the molar ratio of titanium tetrachloride to zinc salt to be Zn / Ti=4 / 1, and then add a certain amount of The amount of urea was mixed into a zinc-titanium composite salt solution with a molar concentration of 2 mol / L after stirring; the zinc-titanium composite salt solution was moved into a hydrothermal reactor and hydrothermally treated at 180 ° C for 25 hours, and then filtered to obtain an intermediate product white powder ; Transfer the white powder to a sodium sulfide solution with a molar concentration of 1 mol / L, treat it at 80°C for 5 hours under inert gas nitrogen, and then filter, wash and dry to obtain the target product.

[0026] Application of additives: (1) 75g of triiron tetroxide, synthesized [Zn x Ti y (OH) 2 ]·[(A a- ) n ·mH...

Embodiment 2

[0029] [Zn x Bi y (OH) 2 ]·[(A a- ) n ·mH 2 O](Zn / Bi=3 / 1,A=CO 3 2- ) preparation of additives

[0030] The bismuth sulfate is dissolved in the nitric acid solution, and zinc sulfate is added, wherein the molar ratio of bismuth sulfate and zinc sulfate is controlled as (Zn / Bi=3 / 1), and then the deionized water is added and the molar concentration is 2mol / L of zinc. Bismuth complex salt solution; dissolving sodium hydroxide in deionized water to prepare a sodium hydroxide solution with a molar concentration of 2 mol / L; adding the sodium hydroxide solution dropwise to the zinc-bismuth complex salt solution under the reaction conditions of 30 °C, Stir continuously until the pH of the mixed solution is 8 after the reaction is completed; transfer the mixed solution into a hydrothermal reaction kettle for hydrothermal treatment at 130 ° C for 15 h, cool to room temperature, filter, wash and dry to obtain a white powder; the obtained white powder Transfer to the prepared sodiu...

Embodiment 3

[0034] [Zn x Ti y Cu z (OH) 2 ]·[(A a- ) n ·mH 2 O](Zn / Ti / Cu=4 / 1 / 1, A=WO 4 2- , OH - ) preparation of additives

[0035] In a fume hood, dissolve the titanium tetrachloride solution in a certain amount of deionized water, add zinc chloride and copper chloride, control the molar ratio of Zn / Ti / Cu to 4 / 1 / 1, and then add a certain amount of Amount of urea was mixed into a compound salt solution with a molar concentration of 3 mol / L after stirring; the compound salt solution was moved into a hydrothermal reactor and hydrothermally treated at 170 ° C for 25 hours, and then filtered to obtain an intermediate product white powder; the white powder was It was transferred to an alkaline solution of sodium tungstate with a molar concentration of 2 mol / L with a pH value of 14, treated at 100 °C for 10 h under inert gas nitrogen, and then filtered, washed and dried to obtain the target product.

[0036] Application of additives: (1) 65g of triiron tetroxide, synthesized Zn x Ti...

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Abstract

The invention discloses a negative plate of a secondary nickel-iron battery, a preparation method of the negative plate and a secondary nickel-iron battery of using the negative plate and belongs to the technical field of negative electrode materials for secondary nickel-iron batteries. According to the main points of the technical scheme, a negative active material in the negative plate of the secondary nickel-iron battery comprises an additive zinc-based multilayered hydroxide [ZnxMyM'z(OH)2].[(A<a->)n.mH2O]. The invention further particularly discloses a preparation method of the negative plate of the secondary nickel-iron battery and the secondary nickel-iron battery of using the negative plate. By adopting the novel negative plate of the secondary nickel-iron battery, the energy density and the rate capability of the secondary nickel-iron battery can be greatly improved and the cycle life of the secondary nickel-iron battery can be greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of iron-nickel secondary batteries, and in particular relates to a negative electrode plate of an iron-nickel secondary battery, a preparation method thereof, and an iron-nickel secondary battery using the negative electrode plate. Background technique [0002] In recent years, the development of nickel-cadmium secondary batteries has been greatly limited due to the pollution of cadmium electrodes; nickel-hydrogen secondary batteries have high cost and slow development due to the use of high-priced hydrogen storage alloy electrodes; zinc-nickel secondary batteries Due to the problems of easy generation of zinc dendrites and deformation in the zinc anode of the battery, the cycle performance of the battery is poor, and the related technology still needs to be further developed. Traditional iron-nickel secondary batteries usually use iron or iron compounds as negative electrode active materials, which have uni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/131H01M4/1391H01M4/62H01M10/30
CPCH01M4/131H01M4/1391H01M4/628H01M10/30Y02E60/10
Inventor 上官恩波付淑倩李晶王芹李全民
Owner HENAN NORMAL UNIV
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