CN109301173A - A method of improving zinc-air battery electrode corrosion resistance - Google Patents
A method of improving zinc-air battery electrode corrosion resistance Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/244—Zinc electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/26—Processes of manufacture
- H01M4/30—Pressing
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Abstract
The present invention provides a kind of methods for improving zinc-air battery electrode corrosion resistance.Polyethylene glycol (PEG) and pyroglutamic acid (PGlu) is added in deionized water, conciliation value alkalescent after insertion zinc electrode, neopelex (DTAB) is slowly added dropwise, cleaning obtains the zinc electrode of corrosion inhibiter cladding metal completely after reaction, finally make the smooth densification of electrode surface using physical means or hot pressing, the raising to zinc-air battery electrode corrosion resistance can be realized.This method is attached to zinc load metal surface by the way that the copolymer of polyethylene glycol, pyroglutamic acid and neopelex attract each other, the corrosion resistance of metallic zinc can be effectively improved by acting synergistically, obtained zinc load material is when being used for zinc-air battery, the generation of gas-evolving electrodes can be effectively relieved, improve stability and durability in battery use.
Description
Technical field
The present invention relates to zinc-air battery fields, and in particular to zinc-air battery zinc load material, more particularly to one kind
The method for improving zinc-air battery electrode corrosion resistance.
Background technique
In renewable energy power generation and electric vehicle engineering field, develop energy density height, safe and reliable, green non-pollution
Zinc-air battery have important social economic value.Zinc-air battery has energy density more higher than lithium ion battery, together
When its electrolyte be water system, will not burn and explode, in addition low raw-material cost, becomes the important of next-generation new energy battery
Composition, domestic researcher is already in full swing for the research of its system at present.
The principal element for restricting zinc-air battery development at present is that gas-evolving electrodes, dendritic growth, the electrode of negative electrode material become
The problems such as shape and passivation, not yet it is applied to industrialized production system.One of important disadvantage is the metallic zinc of cathode
Hydrogen is generated by the hydroxide ion corrosion in electrolyte, causes the loss and battery bulging and breakage of negative electrode active material.It is right
Mainly pass through corrosion inhibiter combined processing in the protection of cathode, the mainstream studied at present is attached most importance to metal-based compounds and organic compound
Object.Wherein, organic compound mainly covers the active site of surface corrosion reaction by forming adsorption layer.But single type is organic
Additive is generally unattainable preferable effect due to the monotonicity in its function and structure.Therefore multiple by a variety of organic phases
The corrosion effect for closing control metal zinc load has a very important significance.
Chinese invention patent application number 201810025014.7 discloses a kind of zinc-based secondary battery cathode material and its preparation
Method, invention addition modifying agent make zinc oxide surface be evenly distributed with positive charge, and resin cation is equal by Electrostatic Absorption
It is coated on zinc oxide surface, evenly with a thickness of 5 ~ 50nm.The zinc oxide that resin cation coats is put into mixed salt solution
Middle stirring, metal ion are equably adsorbed in resin cation clad, and reducing agent, which is added, makes metal ion be reduced into 3 ~ 7nm
Metal simple-substance.
Chinese invention patent application number 201711226658.4 discloses a kind of porous zinc based on braiding structure-air electricity
The preparation method of pond cathode belongs to zinc-air battery negative electrode material technical field.The porous zinc-air battery of braiding structure is negative
Pole: using metal zinc wire as raw material, by method pore-creating on zinc-air battery electrode of braiding, improving its specific surface area, is formed
The zinc-air battery cathode of porous structure.
Chinese invention patent application number 201611191755.X discloses a kind of zinc-air battery zinc load material and its system
Preparation Method, negative electrode material include metal zinc, oxide powder and zinc, bonding agent and the one-dimensional tubulose being made of two layer metal oxide
The addictive with dual functions of structure, preparation method are to be added to metal zinc, oxide powder and zinc, conductive agent and addictive with dual functions
In solution containing bonding agent, ultrasonic disperse processing, then under agitation, heating evaporation solvent obtains zinc load material.
Chinese invention patent application number 201710626137.1, which discloses a kind of flexibility, can fill zinc-air battery with porous zinc
The preparation method of negative electrode material comprising following steps: pre-processing copper foil to obtain copper foil matrix, and prepares copper electricity respectively
Plating solution and zinc electroplate liquid；In copper electroplating liquid, using copper sheet as anode, copper foil matrix is connect with cathode, carries out acid copper,
Obtain the opper matrix of sufficient porosity；In zinc electroplate liquid, using zinc metal sheet as anode, the opper matrix of sufficient porosity is connect with cathode, carries out electro-deposition
It after zinc, is successively freezed and is freeze-dried, obtain porous zinc load material.
According to above-mentioned, the zinc load in existing scheme for zinc-air battery is thermodynamic instability in alkaline solution,
Gas-evolving electrodes easily occur, the hydrogen that corrosion reaction generates can be such that inner pressure of battery increases, battery bulging, or even damage battery are caused,
And corrosion reaction consumes active material zinc, can also battery capacity be made to decay.
Summary of the invention
Wider zinc-air battery negative electrode material seriously corroded in alkaline electrolyte is applied for current, easily causes battery
The problems such as capacity attenuation or even bulging or damage, the present invention propose a kind of side for improving zinc-air battery electrode corrosion resistance
Method improves the durability of zinc-air battery to effectively reduce corrosivity of the zinc load in lye.
Specific technical solution of the present invention is as follows:
A method of improving zinc-air battery electrode corrosion resistance, comprising the following steps:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made.
Polyoxyethylene group good hydrophilic property and acid-fast alkali-proof stability height, it is slow to be highly suitable for zinc from the point of view of structure and property
Agent is lost, and polyethylene glycol is the simplest compound containing polyoxyethylene groups；Neopelex is that a kind of performance is excellent
Good, widely used anionic surfactant.The present invention is adsorbed on zinc electricity by the copolymer of polyethylene glycol and pyroglutamic acid
Pole surface, later by the copolymer with negative electrical charge and with the neopelex of positive charge under weak basic condition
It is attracted each other by electrostatic interaction, is being attached to zinc metal surface, it can be achieved that excellent corrosion mitigating effect.
Preferably, the parts by weight of each raw material are in step (1), 22 ~ 25 parts by weight of polyethylene glycol, 18 ~ 22 weight of pyroglutamic acid
Measure part, 48 ~ 58 parts by weight of deionized water, 2 ~ 5 parts by weight of neopelex solution.
Preferably, the mass concentration of step (1) the neopelex solution is 10 ~ 20%.
Preferably, step (1) the rodlike inhibitor of metal zinc electrode should be activated in advance, and treatment process is, first by stick
Shape inhibitor of metal zinc electrode immerses in the hydrochloric acid solution that mass concentration is 20 ~ 30%, takes out after 2 ~ 5min, then clean 2 ~ 3 with deionized water
Time.
Preferably, it is 7.4 ~ 7.5 that step (1), which adjusts the pH value of the solution after pH value,.
Preferably, the rate of addition of step (1) the neopelex solution is 1 ~ 3mL/min.
Preferably, the temperature after step (1) adjusting temperature is 85 ~ 90 DEG C.
Preferably, the number of step (2) the deionized water washing is 2 ~ 5 times.
Preferably, step (3) physical means are that laser treatment or vacuum plasma are handled.
Preferably, the temperature of step (3) described hot pressing is 130 ~ 150 DEG C, and the dwell time is 5 ~ 20s.
The present invention also provides a kind of methods for the raising zinc-air battery electrode corrosion resistance that above content obtains.It will gather
Ethylene glycol and pyroglutamic acid are dissolved in deionized water, and the rodlike inhibitor of metal zinc electrode of surface active is inserted into solution system, is adjusted
Neopelex solution is slowly added dropwise in pH value, while adjusting the temperature to metal surface and floccule occur, completely after reaction
Metal bar is taken out and washes away unreacted organic matter using deionized water, the zinc electrode of corrosion inhibiter cladding metal is obtained, finally makes
Make the smooth densification of electrode surface with physical means or hot pressing, obtain required negative electrode material, realizes and improve zinc load corrosion resistance
The purpose of energy.
The present invention provides a kind of methods for improving zinc-air battery electrode corrosion resistance, compared with prior art,
Prominent feature and excellent effect are:
1, it proposes the compound zinc load surface that is attached to of polyethylene glycol and neopelex realizing high zinc-air battery electricity
The method of pole corrosion resistance.
2, it is attached to zinc by the way that the copolymer of polyethylene glycol, pyroglutamic acid and neopelex attract each other and bears
Pole metal surface, neopelex can inhibit the anode branch of corrosion reaction, and polyethylene glycol can inhibit cathode branch, pass through two
The synergistic effect of person can effectively improve the corrosion resistance of metallic zinc.
3, gas-evolving electrodes can be effectively relieved when being used for zinc-air battery in the zinc load material that method of the invention obtains
Occur, improves the service performance and service life of battery.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 16%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 24%, after 3min
It takes out, then is cleaned 2 times with deionized water；The pH value of solution is 7.4；The rate of addition of neopelex solution is 2mL/
min；Reaction temperature is 87 DEG C；The parts by weight of each raw material are 23 parts by weight of polyethylene glycol, 21 parts by weight of pyroglutamic acid, deionization
53 parts by weight of water, 3 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 3 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are laser treatment；The temperature of hot pressing is 138 DEG C, dwell time 13s.
Test method are as follows:
1 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 1 measured by the above method obtains
Shown in 1.
Embodiment 2
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 12%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 23%, after 3min
It takes out, then is cleaned 3 times with deionized water；The pH value of solution is 7.5；The rate of addition of neopelex solution is 1mL/
min；Reaction temperature is 86 DEG C；The parts by weight of each raw material are 23 parts by weight of polyethylene glycol, 19 parts by weight of pyroglutamic acid, deionization
55 parts by weight of water, 3 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 3 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are vacuum plasma processing；The temperature of hot pressing is 135 DEG C, dwell time 18s.
Test method are as follows:
2 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 2 measured by the above method obtains
Shown in 1.
Embodiment 3
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 17%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 28%, after 4min
It takes out, then is cleaned 2 times with deionized water；The pH value of solution is 7.4；The rate of addition of neopelex solution is 3mL/
min；Reaction temperature is 88 DEG C；The parts by weight of each raw material are 24 parts by weight of polyethylene glycol, 21 parts by weight of pyroglutamic acid, deionization
51 parts by weight of water, 4 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 4 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are that laser treatment or vacuum plasma are handled；The temperature of hot pressing is 145 DEG C, dwell time 10s.
Test method are as follows:
3 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 3 measured by the above method obtains
Shown in 1.
Embodiment 4
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 10%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 20%, after 5min
It takes out, then is cleaned 3 times with deionized water；The pH value of solution is 7.5；The rate of addition of neopelex solution is 1mL/
min；Reaction temperature is 85 DEG C；The parts by weight of each raw material are 22 parts by weight of polyethylene glycol, 18 parts by weight of pyroglutamic acid, deionization
58 parts by weight of water, 2 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 2 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are vacuum plasma processing；The temperature of hot pressing is 130 DEG C, dwell time 20s.
Test method are as follows:
4 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 4 measured by the above method obtains
Shown in 1.
Embodiment 5
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 20%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 30%, after 2min
It takes out, then is cleaned 2 times with deionized water；The pH value of solution is 7.4；The rate of addition of neopelex solution is 3mL/
min；Reaction temperature is 90 DEG C；The parts by weight of each raw material are 25 parts by weight of polyethylene glycol, 22 parts by weight of pyroglutamic acid, deionization
48 parts by weight of water, 5 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 5 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are laser treatment；The temperature of hot pressing is 150 DEG C, dwell time 80s.
Test method are as follows:
5 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 5 measured by the above method obtains
Shown in 1.
Embodiment 6
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；The mass concentration of neopelex solution is 15%；Rodlike inhibitor of metal zinc electrode is answered pre- advanced
Row is activated, and treatment process is first to immerse rodlike inhibitor of metal zinc electrode in the hydrochloric acid solution that mass concentration is 25%, after 4min
It takes out, then is cleaned 3 times with deionized water；The pH value of solution is 7.5；The rate of addition of neopelex solution is 2mL/
min；Reaction temperature is 88 DEG C；The parts by weight of each raw material are 24 parts by weight of polyethylene glycol, 20 parts by weight of pyroglutamic acid, deionization
52 parts by weight of water, 4 parts by weight of neopelex solution；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 4 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are vacuum plasma processing；The temperature of hot pressing is 140 DEG C, dwell time 15s.
Test method are as follows:
6 method of 1g embodiment is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
The hydrogen-separating quantity such as table of the gas-evolving electrodes test for the zinc electrode that the method for the embodiment 6 measured by the above method obtains
Shown in 1.
Comparative example 1
Preparation process are as follows:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, while adjusting the temperature to metal surface and floccule occur；Rodlike metallic zinc electricity
Pole should be activated in advance, and treatment process is that rodlike inhibitor of metal zinc electrode is first immersed the hydrochloric acid solution that mass concentration is 25%
In, it is taken out after 4min, then cleaned 3 times with deionized water；The pH value of solution is 7.5；Reaction temperature is 88 DEG C；The weight of each raw material
Part is 24 parts by weight of polyethylene glycol, 20 parts by weight of pyroglutamic acid, 56 parts by weight of deionized water；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；The number of deionized water washing is 4 times；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made；Object
Reason means are vacuum plasma processing；The temperature of hot pressing is 140 DEG C, dwell time 15s.
Test method are as follows:
1 method of 1g comparative example is taken treated zinc electrode, is added in the potassium hydroxide solution of the 10mol/L of 100mL, is put into closed
In container, bath temperature is 50 DEG C, the hydrogen of acquisition is collected, using MOT500-H2It is rotten that hydrogen measurement instrument measures zinc electrode liberation of hydrogen
The amounts of hydrogen that erosion reaction generates measures accumulative hydrogen-separating quantity when 1h, 3h, 6h and 10h.
Comparative example 1 is not added with neopelex solution, and the method for the comparative example 1 measured by the above method obtains
Zinc electrode gas-evolving electrodes test hydrogen-separating quantity it is as shown in table 1.
Table 1:
Claims (10)
1. a kind of method for improving zinc-air battery electrode corrosion resistance, which comprises the following steps:
(1) polyethylene glycol and pyroglutamic acid are dissolved in wiring solution-forming in deionized water, are then inserted into rodlike inhibitor of metal zinc electrode
In solution system, adjusting solution ph to alkalescent, then neopelex solution is slowly added dropwise, it adjusts the temperature to simultaneously
There is floccule in metal surface；
(2) metal bar is taken out after reaction completely, washes away unreacted organic matter using deionized water, corrosion inhibiter cladding gold is made
The zinc electrode of category；
(3) the smooth densification of electrode surface is made using physical means or hot pressing, the negative electrode material of required zinc-air battery is made.
2. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) parts by weight of each raw material are in, 22 ~ 25 parts by weight of polyethylene glycol, 18 ~ 22 parts by weight of pyroglutamic acid, 48 ~ 58 weight of deionized water
Measure part, 2 ~ 5 parts by weight of neopelex solution.
3. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) mass concentration of the neopelex solution is 10 ~ 20%.
4. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) the rodlike inhibitor of metal zinc electrode should be activated in advance, and treatment process is that rodlike inhibitor of metal zinc electrode is first immersed quality
In the hydrochloric acid solution that concentration is 20 ~ 30%, taken out after 2 ~ 5min, then cleaned 2 ~ 3 times with deionized water.
5. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) pH value for adjusting the solution after pH value is 7.4 ~ 7.5.
6. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) rate of addition of the neopelex solution is 1 ~ 3mL/min.
7. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(1) temperature after adjusting is 85 ~ 90 DEG C.
8. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(2) number of the deionized water washing is 2 ~ 5 times.
9. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
(3) physical means are that laser treatment or vacuum plasma are handled.
10. a kind of method for improving zinc-air battery electrode corrosion resistance according to claim 1, it is characterised in that: step
Suddenly the temperature of (3) described hot pressing is 130 ~ 150 DEG C, and the dwell time is 5 ~ 20s.
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| WO2024027353A1 (en) * | 2022-08-01 | 2024-02-08 | 隆基绿能科技股份有限公司 | Copper-aluminum granular powder containing coating layer, and preparation method therefor and use thereof |
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2018
- 2018-09-29 CN CN201811144296.9A patent/CN109301173A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027353A1 (en) * | 2022-08-01 | 2024-02-08 | 隆基绿能科技股份有限公司 | Copper-aluminum granular powder containing coating layer, and preparation method therefor and use thereof |
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