High-capacity double-bag type zinc-nickel secondary battery and preparation method thereof

A secondary battery, high-capacity technology, applied in the manufacture of nickel batteries, alkaline batteries, battery electrodes, etc., can solve the problems of short cycle life, difficult to meet industrial applications, etc., to suppress swelling, optimize electrode preparation methods, and improve activity. The effect of material utilization

Active Publication Date: 2018-11-23
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a large-capacity double-pocket type zinc-nickel secondary battery and a preparation method thereof in view of the problems of short cycle life and difficulty in meeting industrial application in current zinc-nickel secondary batteries

Method used

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  • High-capacity double-bag type zinc-nickel secondary battery and preparation method thereof
  • High-capacity double-bag type zinc-nickel secondary battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] [Ni 0.8 Al 0.2 co 0.05 (OH) 2 ]·[(BO 2 - ) z mH 2 O] Preparation of positive electrode active material:

[0023] First, the nickel chloride compound is made into a nickel salt solution with a molar concentration of 1.8mol / L with deionized water that removes carbon dioxide, and aluminum sulfate and cobalt sulfate are dissolved in a ratio of 0.8:0.2:0.05 in the molar ratio of nickel, aluminum and cobalt elements. In the sodium hydroxide solution with a molar concentration of 4mol / L, under the protection of inert gas nitrogen, slowly add the nickel salt solution dropwise into the reaction kettle equipped with the composite alkaline solution, the reaction temperature is 55 ° C, and the final reaction of the mixture is completed. pH=10.5, after the reaction is completed, age the mother liquor at 55°C for 36 hours, then filter; dry the filter cake at 125°C for 2 hours, and grind it into powder, pass through a 200-mesh sieve for later use, transfer 8g of the obtained po...

Embodiment 2

[0034] [Ni 0.9 Al 0.1 Ca 0.05 (OH) 2 ]·[(CO 3 2- ) z mH 2 O] Preparation of positive electrode active material:

[0035] First, nickel sulfate is made into a nickel salt solution with a molar concentration of 2.0 mol / L with deionized water, and aluminum sulfate and calcium chloride are dissolved in a molar concentration of 5 mol with a molar ratio of nickel, aluminum and calcium elements of 0.9:0.10.05. / L of sodium hydroxide solution, the nickel salt solution was slowly added dropwise to the reaction kettle equipped with the composite alkaline solution, the reaction temperature was 55°C, the pH of the final reaction mixture was 10.5, after the reaction was completed, the reaction temperature was 55°C The mother liquor was aged for 36 hours under the conditions, and then filtered; the filter cake was dried at 125°C for 2 hours, and ground into powder, and passed through a 200-mesh sieve to obtain Ni 0.9 Al 0.1 Ca 0.05 (OH) 2 ]·[(CO 3 2- ) z mH 2 O powder samples...

Embodiment 3

[0045] [Ni 0.7 Al 0.3 Y 0.05 (OH) 2 ]·[(Cl - ) z mH 2 O] Preparation of positive electrode active material:

[0046] First, the nickel chloride compound is made into a nickel salt solution with a molar concentration of 2.0 mol / L with deionized water that removes carbon dioxide, and the ratio of aluminum chloride and yttrium chloride to the molar ratio of nickel, aluminum, and yttrium is 0.7:0.3:0.05 Dissolve in a sodium hydroxide solution with a molar concentration of 3mol / L, under the protection of inert gas nitrogen, slowly add the nickel salt solution dropwise into the reaction kettle equipped with a composite alkaline solution, the reaction temperature is 60°C, and the final reaction is completed The pH of the mixture is 11. After the reaction is completed, the mother liquor is aged at 70°C for 48h, and then filtered; the filter cake is dried at 125°C for 2h, and ground into powder to obtain [Ni 0.7 Al 0.3 Y 0.05 (OH) 2 ]·[(Cl - ) z mH 2 O] Powder samples.

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Abstract

The invention discloses a high-capacity double-bag type zinc-nickel secondary battery and a preparation method thereof, wherein a battery polar plate group consists of a bag type nickel positive plate, a bag type zinc negative plate and a multilayer composite diaphragm positioned between the bag type nickel positive plate and the bag type zinc negative plate; the electrode material of the bag typenickel positive plate is composed of a positive electrode active material, a conductive agent, an additive and a binding agent; the electrode material of the bag type zinc negative plate is composedof a negative active material, a conductive agent, an additive and a binding agent; an electrolyte is an alkaline solution containing additives. According to the secondary battery, the formula of thepositive and negative electrodes and the formula of the electrolyte are optimized and the structure of the battery is adjusted, so that the charge and discharge performance and the cycle performance of the novel zinc-nickel secondary battery are improved, and the application requirements in the industrial field can be further met.

Description

technical field [0001] The invention belongs to the technical field of zinc-nickel secondary batteries, and in particular relates to a large-capacity double-pocket zinc-nickel secondary battery and a preparation method thereof. Background technique [0002] Large-capacity pouch batteries (nickel-cadmium batteries) have the characteristics of safety, durability, and long cycle life. They are currently widely used in industrial fields such as railway locomotives, mines, armored vehicles, and aircraft engines as starting or emergency power supplies. Large-capacity industrial batteries are a major component of rail transit vehicles, and their main task is to ensure that the vehicle has enough power to maintain the electrical equipment to meet the time requirements for emergency power supply in the event of a main power supply failure. Large-capacity battery cells have become the development trend of rail transit batteries, and good electrical performance and safety performance a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/52H01M4/48H01M4/62H01M4/24H01M4/26H01M4/32H01M10/28H01M10/30H01M10/26
CPCH01M4/244H01M4/26H01M4/32H01M4/362H01M4/48H01M4/52H01M4/62H01M4/628H01M10/26H01M10/28H01M10/30Y02E60/10Y02P70/50
Inventor 上官恩波傅培滢李晶吴呈轲付淑倩张慧洁李全民
Owner HENAN NORMAL UNIV
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