CN105185971B - A kind of cathode of alkaline dry battery and its application - Google Patents
A kind of cathode of alkaline dry battery and its application Download PDFInfo
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- CN105185971B CN105185971B CN201510686373.3A CN201510686373A CN105185971B CN 105185971 B CN105185971 B CN 105185971B CN 201510686373 A CN201510686373 A CN 201510686373A CN 105185971 B CN105185971 B CN 105185971B
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/42—Alloys based on zinc
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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
- H01M4/06—Electrodes for primary cells
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
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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
- H01M2004/023—Gel electrode
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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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative 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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
Abstract
The present invention relates to a kind of cathode of alkaline dry battery and its applications, the cathode includes Zinc alloy powder, PAA, PA and electrolyte, and the weight fraction ratio of Zinc alloy powder, PAA, PA and electrolyte is 100:(0.9-1.2): (0.06-0.2): (51-56)；Wherein, partial size≤150 μm of PA.Use PAA and PA as anode binder in the present invention, collocation is simple, reduce additive types in cathode, bringing into for impurity element is reduced simultaneously, and the present invention also rationally controls the particle diameter distribution of PAA and PA, and PAA is made to guarantee the mobility and electric conductivity of cathode as big skeleton, the stickiness of PA guarantee cathode, conducive to the stability of zinc powder dispersion, cathode layering and sedimentation are prevented, to guarantee the leak resistance for promoting battery while cell discharge performance is stablized.When the cathode is applied to alkaline dry battery, make that the discharge performance of alkaline dry battery is more stable, leak resistance is more preferable.
Description
Technical field
The present invention relates to the cathode and its application of a kind of alkaline dry battery more particularly to a kind of alkaline dry battery, belong to electricity
Pool technology field.
The meaning of following expression formula in the present invention are as follows:
PAA: polyacrylic acid sodium salt
PA: polyacrylic acid powder
Background technique
Alkaline battery is most successful high capacity type dry cell, and one of the battery of current most cost performance.Alkaline battery
It is with manganese dioxide for anode, zinc is cathode, and cathode zinc is also granulated by sheet change, increases the response area of cathode,
Potassium hydroxide is electrolyte.So electrical property is greatly improved, the alkaline battery of general same model is common batteries
3-7 times of capacity and discharge time, both cryogenic properties gap is bigger.Alkaline battery is more suitable for high current continuous discharge and wants
The electricity consumption occasion for seeking high operating voltage, especially suitable for camera, flash lamp, shaver, electronic toy, CD player, high-power
Remote controler, wireless mouse, keyboard etc..
But the active material zinc powder of the cathode of alkaline dry battery in the prior art and electrolyte, other additives etc.
It is easy layering, sedimentation, the progress of negative reaction is influenced, to influence the discharge performance of alkaline dry battery.
In addition to this, alkaline dry battery is easy to appear the phenomenon of leakage in harsh environment or under long term storage, due to electricity
Solving liquid is to have stimulation to eyes, respiratory tract and skin with mordant alkaline matter potassium hydroxide solution.Moreover,
Electrolyte also can attack metal, destroy electronic component, therefore battery leak out electrolyte can also destroy the product using the battery,
Especially electronic product.
About the solution easy layering, sedimentation such as negative electrode of alkaline dry cell active material zinc powder and electrolyte, other additives
The problem of, in the prior art it has been reported that as Chinese invention patent (publication number: CN102760894A) to disclose a kind of alkalinity dry
Battery and alkaline dry battery anode mixture pellet, while also disclosing that the cathode of the alkaline dry battery includes Zinc alloy powder and alkali
Property electrolyte, relative to the Zinc alloy powder of 100 parts by weight, the parts by weight of each component in alkaline electrolyte are as follows: cross-linking type poly- third
Olefin(e) acid: 1.25 parts by weight, cross linked sodium polyacrylate: 0.2 parts by weight, indium oxide: 0.04 parts by weight, electrolyte liquid: 53 weights
Measure part, pure water: 3 parts by weight.Wherein, the cross-linking type polyacrylic acid in alkaline electrolyte and cross linked sodium polyacrylate play gel
Effect, the two make alkaline electrolyte in gel jointly, although can alleviate zinc powder and electrolyte, other additive hierarchicals,
The phenomenon that sedimentation, still, not clearly, still have greatly improved effect space；Moreover, the patent fails to improve alkaline do
The leak resistance of battery, and since cathode additive agent type is more, it can also bring impurity element into, influence the property of alkaline dry battery
Energy.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned problems in the prior art, proposing one kind can guarantee battery discharge
It can stablize and be promoted the cathode of the alkaline dry battery of the leak resistance of battery.
Object of the invention can be realized by the following technical scheme: a kind of cathode of alkaline dry battery, including kirsite
Powder, PAA, PA and electrolyte, the weight fraction ratio of Zinc alloy powder, PAA, PA and electrolyte are 100:(0.9-1.2): (0.06-
0.2): (51-56)；Wherein, partial size≤150 μm of PA.
PAA and PA mainly acts on the dispersed distribution of zinc powder as anode binder in the present invention, keeps the flowing of cathode
Property and stickiness, prevent the layering and sedimentation of negative electrode active material zinc powder and electrolyte, other additives etc., meanwhile, absorb negative
It is used as conducting matrix grain after the electrolyte of pole, guarantees that negative reaction steadily carries out.
Both of the invention anode binders solve needed in current alkaline battery a variety of gelling agents keep cathode regardless of
The problem of layer is with sedimentation, collocation is simple, additive types in cathode is reduced, while reducing bringing into for impurity element, to guarantee
The leak resistance of battery is promoted while cell discharge performance is stablized.
Preferably, Zinc alloy powder and electrolyte are common Zinc alloy powder and electrolysis in alkaline dry battery in the present invention
Liquid.
In a kind of cathode of above-mentioned alkaline dry battery, the particle diameter distribution of PA is (by percentage to the quality): partial size≤
75 μm: >=85%, 75 partial size≤105 μm <: 7-12%, 105 partial size≤150 μm <: 3-8%.The present invention passes through orthogonal experiment
It obtains, the partial size of PA presses above-mentioned distribution, and electrolyte stratification, which oozes out ratio, reduces by 60% or so, and oozes out identical quality electrolytic liquid institute
It takes time and increases 230%.Meanwhile in high-temperature storage, electrolyte, which oozes out ratio, reduces by 65% or so, embodies good
High-temperature stability.
In a kind of cathode of above-mentioned alkaline dry battery, the specific gravity of PA is 0.15-0.50g/cm3, water content≤
3.5wt%.
In a kind of cathode of above-mentioned alkaline dry battery, the pH of PA is 2-4.
In a kind of cathode of above-mentioned alkaline dry battery, partial size≤300 μm of PAA.
In a kind of cathode of above-mentioned alkaline dry battery, the particle diameter distribution of PAA is (by percentage to the quality): partial size≤
75 μm: 12-18%, 75 partial size≤105 μm <: 62-75%, 105 partial size≤150 μm <: 6-20%, 150 < partial sizes≤300 μ
M:1-8%.The present invention show that the partial size of PAA presses above-mentioned distribution by orthogonal experiment, and electrolyte retention promotes 2% or so,
When loading same resistance electric discharge, initial voltage improves 0.3%, and high section discharge performance promotes 5.3% or so.
In a kind of cathode of above-mentioned alkaline dry battery, the specific gravity of PAA is 0.4-0.8g/cm3, water content≤
3.5wt%.
In a kind of cathode of above-mentioned alkaline dry battery, the pH of PAA is 5-7.
In the present invention, PAA is polyacrylic acid sodium salt, and particle is thick with respect to PA, and main function is support zinc powder in cathode, is made
Guarantee the mobility and electric conductivity of cathode for big skeleton；And PA is the polyacrylic acid powder that alkaline battery uses, and is hard and crisp
White powder, particle is smaller, meet water easily be swollen and soften, in the electrolytic solution swelling after, viscosity is larger, guarantee cathode stick
Property, conducive to the stability of zinc powder dispersion, cathode layering and sedimentation are prevented, to guarantee the electric performance stablity of battery.
In the present invention, the specific gravity of two kinds of gelling agents is to be determined by its size distribution profile, and pH range is that it is main
The chemical property of ingredient determines.Therefore, the indexs such as the specific gravity of two kinds of gelling agents, water content, pH value are required to control in certain model
It encloses.Because will affect the character of cathode if any relatively large deviation: if water content is higher, active constituent content is reduced, identical
The cathode stability made in the case of formula just has certain influence, while can also generate corresponding influence to battery performance.
It is another object of the present invention to provide a kind of alkaline dry batteries of cathode using above-mentioned alkaline dry battery.
The cathode of alkaline dry battery of the invention is applied in alkaline dry battery, makes the discharge performance of alkaline dry battery more
Stablize, and leak resistance is more preferable.
Compared with prior art, the method has the advantages that
1. using PAA and PA as anode binder in the present invention, collocation is simple, reduces additive types in cathode, together
When reduce impurity element and bring into, to guarantee the leak resistance for promoting battery while cell discharge performance is stablized.
2. rationally control the particle diameter distribution of PAA and PA in the present invention, make PAA as big skeleton guarantee cathode mobility and
Electric conductivity, PA guarantee the stickiness of cathode, conducive to the stability of zinc powder dispersion, cathode layering and sedimentation are prevented, to guarantee electricity
The discharge performance in pond is stablized.
3. in the present invention, rationally controlling specific gravity, the water content, pH value of two kinds of gelling agents, guaranteeing the stabilization of battery performance.
4. the cathode of alkaline dry battery of the invention is stable, anti-applied to that can obtain discharge performance in alkaline dry battery
Leak the better alkaline dry battery of performance.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Table 1: the constituent and its weight fraction ratio of the cathode of 1-5 alkaline dry battery of the embodiment of the present invention
Embodiment 1:
By the constituent of the cathode of 1 alkaline dry battery of embodiment in table 1 and its weighed raw material of weight fraction ratio.
Wherein, Zinc alloy powder and electrolyte are common Zinc alloy powder and potassium hydroxide electricity in alkaline dry battery in raw material
Solve liquid.
In raw material, the specific gravity of PAA is 0.6g/cm3, water content 3wt%, pH 6.Particle diameter distribution is (with quality percentage
Than meter): partial size≤75 μm: 15%, 75 partial size≤105 μm <: 70%, 105 partial size≤150 μm <: 10%, 150 < partial sizes≤
300 μm: 5%.
In raw material, the specific gravity of PA is 0.3g/cm3, water content 3wt%, pH 3.Particle diameter distribution is (with mass percent
Meter): partial size≤75 μm: 85%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 5%.
Then it by the preparation method of the alkaline dry battery of the prior art, disperses Zinc alloy powder, PAA and PA in electrolyte
Cathode is made.
Embodiment 2:
By the constituent of the cathode of 2 alkaline dry battery of embodiment in table 1 and its weighed raw material of weight fraction ratio.
Wherein, Zinc alloy powder and electrolyte are common Zinc alloy powder and potassium hydroxide electricity in alkaline dry battery in raw material
Solve liquid.
In raw material, the specific gravity of PAA is 0.8g/cm3, water content 3.5wt%, pH 6.Particle diameter distribution is (with quality hundred
Divide than meter): partial size≤75 μm: 15%, 75 partial size≤105 μm <: 70%, 105 partial size≤150 μm <: 10%, 150 < partial sizes
≤ 300 μm: 5%.
In raw material, the specific gravity of PA is 0.5g/cm3, water content 3.5wt%, pH 4.Particle diameter distribution is (with quality percentage
Than meter): partial size≤75 μm: 85%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 5%.
Then it by the preparation method of the alkaline dry battery of the prior art, disperses Zinc alloy powder, PAA and PA in electrolyte
Cathode is made.
Embodiment 3:
By the constituent of the cathode of 3 alkaline dry battery of embodiment in table 1 and its weighed raw material of weight fraction ratio.
Wherein, Zinc alloy powder and electrolyte are common Zinc alloy powder and potassium hydroxide electricity in alkaline dry battery in raw material
Solve liquid.
In raw material, the specific gravity of PAA is 0.6g/cm3, water content 3wt%, pH 6.Particle diameter distribution is (with quality percentage
Than meter): partial size≤75 μm: 15%, 75 partial size≤105 μm <: 70%, 105 partial size≤150 μm <: 10%, 150 < partial sizes≤
300 μm: 5%.
In raw material, the specific gravity of PA is 0.3g/cm3, water content 3wt%, pH 3.Particle diameter distribution is (with mass percent
Meter): partial size≤75 μm: 85%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 5%.
Then it by the preparation method of the alkaline dry battery of the prior art, disperses Zinc alloy powder, PAA and PA in electrolyte
Cathode is made.
Embodiment 4:
By the constituent of the cathode of 4 alkaline dry battery of embodiment in table 1 and its weighed raw material of weight fraction ratio.
Wherein, Zinc alloy powder and electrolyte are common Zinc alloy powder and potassium hydroxide electricity in alkaline dry battery in raw material
Solve liquid.
In raw material, the specific gravity of PAA is 0.6g/cm3, water content 3wt%, pH 6.Particle diameter distribution is (with quality percentage
Than meter): partial size≤75 μm: 15%, 75 partial size≤105 μm <: 70%, 105 partial size≤150 μm <: 10%, 150 < partial sizes≤
300 μm: 5%.
In raw material, the specific gravity of PA is 0.3g/cm3, water content 3wt%, pH 3.Particle diameter distribution is (with mass percent
Meter): partial size≤75 μm: 85%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 5%.
Then it by the preparation method of the alkaline dry battery of the prior art, disperses Zinc alloy powder, PAA and PA in electrolyte
Cathode is made.
Embodiment 5:
By the constituent of the cathode of 5 alkaline dry battery of embodiment in table 1 and its weighed raw material of weight fraction ratio.
Wherein, Zinc alloy powder and electrolyte are common Zinc alloy powder and potassium hydroxide electricity in alkaline dry battery in raw material
Solve liquid.
In raw material, the specific gravity of PAA is 0.6g/cm3, water content 3wt%, pH 6.Particle diameter distribution is (with quality percentage
Than meter): partial size≤75 μm: 15%, 75 partial size≤105 μm <: 70%, 105 partial size≤150 μm <: 10%, 150 < partial sizes≤
300 μm: 5%.
In raw material, the specific gravity of PA is 0.3g/cm3, water content 3wt%, pH 3.Particle diameter distribution is (with mass percent
Meter): partial size≤75 μm: 85%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 5%.
Then it by the preparation method of the alkaline dry battery of the prior art, disperses Zinc alloy powder, PAA and PA in electrolyte
Cathode is made.
Zinc in the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, relative to 100 parts by weight
Alloyed powder, the parts by weight of PAA can be with are as follows: 0.95,1.05,1.15.
Zinc in the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, relative to 100 parts by weight
Alloyed powder, the parts by weight of PA can be with are as follows: 0.065,0.07,0.075,0.085,0.09,0.095,0.105,0.11,0.115,
0.12、0.125、0.13、0.135、0.14、0.145、0.155、0.16、0.165、0.17、0.175、0.18、0.185、0.19、
0.195。
Zinc in the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, relative to 100 parts by weight
Alloyed powder, the parts by weight of electrolyte can be with are as follows: 51.5,52.5,53.5,54,54.5,55.5.
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the specific gravity of PAA can also be
0.4g/cm3、0.45g/cm3、0.5g/cm3、0.55g/cm3、0.65g/cm3、0.7g/cm3、0.75g/cm3。
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the moisture content of PAA can also be
0.1wt%, 0.5wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%.
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the pH of PAA can also for 5,
5.1、5.2、5.3、5.4、5.5、5.6、5.7、5.8、5.9、6.1、6.2、6.3、6.4、6.5、6.6、6.7、6.8、6.9、7。
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the particle diameter distribution of PAA can be with
For (by percentage to the quality): partial size≤75 μm: 12%, 75 partial size≤105 μm <: 74%, 105 partial size≤150 μm <: 6%,
150 partial size≤300 μm <: 8%；Partial size≤75 μm: 13%, 75 partial size≤105 μm <: 66%, 105 partial size≤150 μm <:
20%, 150 partial size≤300 μm <: 1%；Partial size≤75 μm: 14%, 75 partial size≤105 μm <: 62%, 105 partial size≤150 <
μm: 18%, 150 partial size≤300 μm <: 6%；Partial size≤75 μm: 16%, 75 partial size≤105 μm <: 75%, 105 < partial sizes≤
150 μm: 7%, 150 partial size≤300 μm <: 2%；Partial size≤75 μm: 17%, 75 partial size≤105 μm <: 65%, 105 < partial sizes
≤ 150 μm: 15%, 150 partial size≤300 μm <: 3%；Partial size≤75 μm: 18%, 75 partial size≤105 μm <: 68%, 105 <
Partial size≤150 μm: 8%, 150 partial size≤300 μm <: 6%.
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the specific gravity of PA can also be
0.15g/cm3、0.2g/cm3、0.25g/cm3、0.35g/cm3、0.4g/cm3、0.45g/cm3。
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the moisture content of PA can also be
0.1wt%, 0.5wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%.
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the pH of PA can also for 2,2.1,
2.2、2.3、2.4、2.5、2.6、2.7、2.8、2.9、3.1、3.2、3.3、3.4、3.5、3.6、3.7、3.8、3.9、4。
In the embodiment and its alternative of the cathode of above-mentioned alkaline dry battery, the particle diameter distribution of PA can also be
(by percentage to the quality): partial size≤75 μm: 90%, 75 partial size≤105 μm <: 7%, 105 partial size≤150 μm <: 3%；Grain
Diameter≤75 μm: 89%, 75 partial size≤105 μm <: 7%, 105 partial size≤150 μm <: 4%；Partial size≤75 μm: 88%, 75 <
Diameter≤105 μm: 7%, 105 partial size≤150 μm <: 5%；Partial size≤75 μm: 87%, 75 partial size≤105 μm <: 7%, 105 <
Partial size≤150 μm: 6%；Partial size≤75 μm: 86%, 75 partial size≤105 μm <: 7%, 105 partial size≤150 μm <: 7%；Partial size
≤ 75 μm: 85%, 75 partial size≤105 μm <: 7%, 105 partial size≤150 μm <: 8%；
Partial size≤75 μm: 89%, 75 partial size≤105 μm <: 8%, 105 partial size≤150 μm <: 3%；Partial size≤75 μm:
88%, 75 partial size≤105 μm <: 8%, 105 partial size≤150 μm <: 4%；Partial size≤75 μm: 87%, 75 < partial sizes≤105 μ
M:8%, 105 partial size≤150 μm <: 5%；Partial size≤75 μm: 86%, 75 partial size≤105 μm <: 8%, 105 partial size≤150 <
μm: 6%；Partial size≤75 μm: 85%, 75 partial size≤105 μm <: 8%, 105 partial size≤150 μm <: 7%；
Partial size≤75 μm: 88%, 75 partial size≤105 μm <: 9%, 105 partial size≤150 μm <: 3%；Partial size≤75 μm:
87%, 75 partial size≤105 μm <: 9%, 105 partial size≤150 μm <: 4%；Partial size≤75 μm: 86%, 75 < partial sizes≤105 μ
M:9%, 105 partial size≤150 μm <: 5%；Partial size≤75 μm: 85%, 75 partial size≤105 μm <: 9%, 105 partial size≤150 <
μm: 6%；
Partial size≤75 μm: 87%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 3%；Partial size≤75 μm:
86%, 75 partial size≤105 μm <: 10%, 105 partial size≤150 μm <: 4%；
Partial size≤75 μm: 86%, 75 partial size≤105 μm <: 11%, 105 partial size≤150 μm <: 3%；Partial size≤75 μm:
85%, 75 partial size≤105 μm <: 11%, 105 partial size≤150 μm <: 4%；
Partial size≤75 μm: 85%, 75 partial size≤105 μm <: 12%, 105 partial size≤150 μm <: 3%.
Application Example 1-5:
Respectively by the cathode of alkaline dry battery made from 1-5 of the embodiment of the present invention instead of the negative of LR20 battery in the prior art
New alkaline dry battery is prepared in pole.
Comparative example: commercially available LR20 battery.
By the Application Example 1-5 alkaline dry battery being prepared and the alkaline dry battery of comparative example carry out discharge performance and
Leak resistance test, test result are as shown in table 2.
Table 2: test result
In addition, the interior gas amount using the alkaline dry battery of the cathode of alkaline dry battery of the present invention exists through detecting
3.2-4.8mL, and the interior gas amount of the commercially available LR20 battery of comparative example is in 4.6-6.5mL.
Thus, it can be known that the discharge performance and leak resistance of the alkaline dry battery of the cathode of application alkaline dry battery of the present invention are equal
It is greatly improved.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, but simultaneously
Spirit or beyond the scope defined by the appended claims of the invention is not deviated by.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.
Claims (2)
1. a kind of cathode of alkaline dry battery, which is characterized in that the cathode includes Zinc alloy powder, PAA, PA and electrolyte, institute
The weight fraction ratio for stating Zinc alloy powder, PAA, PA and electrolyte is 100:(0.9-1.2): (0.06-0.2): (51-56)；Wherein,
Partial size≤150 μm of the PA, partial size≤300 μm of the PAA；
The particle diameter distribution of the PA is by percentage to the quality: partial size≤75 μm: >=85%, 75 partial size≤105 μm <: 7-
12%, 105 partial size≤150 μm <: 3-8%；
The specific gravity of the PA is 0.15-0.50g/cm3, water content≤3.5wt%；
The pH of the PA is 2-4；
The particle diameter distribution of the PAA is by percentage to the quality: partial size≤75 μm: 12-18%, 75 partial size≤105 μm <: 62-
75%, 105 partial size≤150 μm <: 6-20%, 150 partial size≤300 μm <: 1-8%；
The specific gravity of the PAA is 0.4-0.8g/cm3, water content≤3.5wt%；
The pH of the PAA is 5-7；
The PAA is polyacrylic acid sodium salt；
The PA is polyacrylic acid powder.
2. a kind of alkaline dry battery for the cathode for applying alkaline dry battery as described in claim 1.
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| JP2006331767A (en) * | 2005-05-25 | 2006-12-07 | Hitachi Maxell Ltd | Alkaline cell |
| CN103078119A (en) * | 2013-01-22 | 2013-05-01 | 中银（宁波）电池有限公司 | Mercury-free alkaline battery negative electrode material and preparation method thereof |
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