CN106531932A - Polymer composite separator for lead acid storage battery and preparation method thereof - Google Patents
Polymer composite separator for lead acid storage battery and preparation method thereof Download PDFInfo
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- CN106531932A CN106531932A CN201611133589.8A CN201611133589A CN106531932A CN 106531932 A CN106531932 A CN 106531932A CN 201611133589 A CN201611133589 A CN 201611133589A CN 106531932 A CN106531932 A CN 106531932A
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a polymer composite separator for a lead acid storage battery, and the polymer composite separator comprises the following raw materials by weight: 50-70 parts of polypropylene, 40-60 parts of polyethylene, 5-12 parts of silica, 15-25 parts of maleic anhydride, 1-3 parts of an initiator, 4-8 parts of an additive, 8-15 parts of glass fiber, 10-20 parts of an impregnating compound, 0.8-2 parts of a coupling agent, 1-3 parts of an antioxidant, 2-5 parts of a rare earth material, 10-16 parts of a hydrochloric acid solution and 16-24 parts of a non-ionic surfactant. The polymer composite separator for the lead acid storage battery has the advantages of super-high strength, toughness and permeability resistance, large flexural coefficient, good heat resistance and oxidation resistance, simple preparation method, no high cost equipment investment, low production cost and suitability for industrial production, the polymer composite separator for the lead acid storage battery is used in the lead-acid battery for effectively reducing the short-circuit problem caused by the separator, prolongs the service life of the lead acid storage battery, and widens the application prospect.
Description
Technical field
The present invention relates to battery technology field, more particularly to a kind of lead-acid accumulator macromolecule composite diaphragm and its system
Preparation Method.
Background technology
Dividing plate is referred to as " the 3rd pole " of battery, is that boundary can prevent both positive and negative polarity short circuit between accumulator anode and cathode,
The part of ionic conduction is can guarantee that again.A vitals of the dividing plate as storage battery production, the quality of its performance are directly affected
The discharge capacity and charge and discharge circulation life of battery.Existing baffle plate of lead acid storage battery species has on the market：PVC sheets
Formula dividing plate, polypropylene fibre dividing plate, polyethylene film or pocket type dividing plate and glass fibre composite diaphragm etc..With communications and transportation and electricity
The causes such as news flourish, and lead-acid accumulator is more and more applied as a kind of ripe power supply product, people couple
The performance requirement of lead-acid accumulator also more and more higher, vitals of the dividing plate as lead-acid accumulator, the quality of its performance is directly
Affect the service life of lead-acid accumulator.The dividing plate of high-quality answers good permeability resistance, intensity and good toughness, heat-resisting, acid-alkali-corrosive-resisting
Property is good, the features such as anti-oxidant, aging is good.However, in actual applications, it has been found that the short circuit problem of dividing plate is especially prominent.
All there is infiltration problem in what existing dividing plate was more or less on the market, with aperture is big, intensity and poor toughness, in assembling process
The problems such as easily there is damaged, jackknifing.Based on above statement, the present invention proposes a kind of lead-acid accumulator macromolecule composite diaphragm
And preparation method thereof.
The content of the invention
The invention aims to shortcoming present in prior art is solved, and a kind of lead-acid accumulator for proposing is high
Molecule composite diaphragm and preparation method thereof.
A kind of lead-acid accumulator macromolecule composite diaphragm, including the raw material of following weight portion：It is 50～70 parts of polypropylene, poly-
40～60 parts of ethene, 5～12 parts of silica, 15～25 parts of maleic anhydride, 1～3 part of initiator, 4～8 parts of additive, glass
8～15 parts of fiber, 10～20 parts of size, 0.8～2 part of coupling agent, 1～3 part of antioxidant, 2～5 parts of rare earth material, hydrochloric acid
10～16 parts of solution, 16～24 parts of nonionic surfactant.
Preferably, a kind of described lead-acid accumulator macromolecule composite diaphragm, including the raw material of following weight portion：Poly- third
55～65 parts of alkene, 45～55 parts of polyethylene, 6～10 parts of silica, 18～22 parts of maleic anhydride, 1.5～2.5 parts of initiator,
5～7 parts of additive, 10～14 parts of glass fibre, 12～18 parts of size, 1～1.8 part of coupling agent, antioxidant 1.5～2.5
Part, 3～4 parts of rare earth material, 12～15 parts of hydrochloric acid solution, 18～22 parts of nonionic surfactant.
Preferably, a kind of described lead-acid accumulator macromolecule composite diaphragm, including the raw material of following weight portion：Poly- third
60 parts of alkene, 50 parts of polyethylene, 8 parts of silica, 20 parts of maleic anhydride, 2 parts of initiator, 6 parts of additive, 12 parts of glass fibre,
15 parts of size, 1.5 parts of coupling agent, 2 parts of antioxidant, 3.5 parts of rare earth material, 14 parts of hydrochloric acid solution, non-ionic surface active
20 parts of agent.
Preferably, the initiator is benzoyl peroxide.
Preferably, the additive is dimethylformamide or the one kind in thioester.
Preferably, the coupling agent is the one kind in silane coupler or aluminate coupling agent, and preferred γ-ammonia supports propyl group three
One kind in Ethoxysilane, γ propyltrimethoxy silane or methacryl chlorination chromium complex.
Preferably, the hydrochloric acid solution is hydrochloric acid solution that concentration is 0.8～1.2mol/L.
The invention allows for a kind of lead-acid accumulator preparation method of macromolecule composite diaphragm, comprises the following steps：
S1, by the polypropylene of the proportion, polyethylene, maleic anhydride, initiator and additive be added to melting tank in, in high temperature
170～190 DEG C, it is slowly stirred in heating, until completely melted, with the rotating speed of 520～700r/min, high-speed stirred 18～
30min, is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added in the hydrochloric acid solution of the proportion, soaks 15～25min, then carry out
Filter, and 30～50min is vacuum dried in the environment of 70～100 DEG C, obtain glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the coupling agent of the proportion
And rare earth material, 22～34min of ultrasonic disperse, obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 146～168 DEG C passes through twin-screw after being well mixed
Extruder extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after 1～3h of immersion,
Take out drying.
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, which has the intensity of superelevation, permeability resistance
And toughness, buckling factor is big, heat resistance and good in oxidation resistance, polypropylene and polyethylene raw material is entered using maleic anhydride in formula
Row graft modification, greatly improves its mechanical property and boundary strength, right respectively using hydrochloric acid solution, coupling agent and rare earth material
Glass fibre is modified, and improves compatibility, wellability and the reactivity of glass fibre and resin matrix, and the present invention is also proposed
A kind of preparation method of lead-acid accumulator with macromolecule composite diaphragm, is carried out to polypropylene, polyethylene and glass fibre respectively
It is modified, it is molded with silica and antioxidant blending extrusion, after nonionic surfactant immersion sheet forming, taking-up
Drying, its preparation method are simple, and without big cost equipment investment, preparation cost is low, are adapted to industrialized production, and gained plumbic acid stores
Battery macromolecule composite diaphragm, is applied in lead-acid accumulator, is effectively reduced the short circuit problem caused by dividing plate, extends
The service life of lead-acid accumulator, has a extensive future.
Specific embodiment
The present invention is further explained with reference to specific embodiment.
Embodiment one
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, including the raw material of following weight portion：Polypropylene 58
Part, 60 parts of polyethylene, 8 parts of silica, 18 parts of maleic anhydride, 2 parts of benzoyl peroxide, 6 parts of dimethylformamide, glass fibers
12 parts of dimension, 15 parts of size, 1.5 parts of methacryl chlorination chromium complex, 1.5 parts of antioxidant, 4 parts of rare earth material, hydrochloric acid
12 parts of solution, 20 parts of nonionic surfactant.
Its preparation method, comprises the following steps：
S1, the polypropylene of the proportion, polyethylene, maleic anhydride, benzoyl peroxide and dimethylformamide are added to it is molten
Melt in tank, in 185 DEG C of high temperature, be slowly stirred in heating, until completely melted, with the rotating speed of 580r/min, high-speed stirred
22min, is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added to the concentration of the proportion in the hydrochloric acid solution of 0.9mol/L, immersion
18min, is then filtered, and in the environment of 80 DEG C is vacuum dried 45min, obtains glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the methyl-prop of the proportion
Alkene chloride chromium complex and rare earth material, ultrasonic disperse 28min obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 146 DEG C passes through double screw extruder after being well mixed
Extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after immersion 2h, is taken out
Drying.
Embodiment two
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, including the raw material of following weight portion：Polypropylene 70
Part, 40 parts of polyethylene, 6 parts of silica, 22 parts of maleic anhydride, 1.5 parts of benzoyl peroxide, 4 parts of thioester, glass fibre
8 parts, 12 parts of size, γ-ammonia support 0.8 part of propyl-triethoxysilicane, 1 part of antioxidant, 2 parts of rare earth material, hydrochloric acid solution
10 parts, 18 parts of nonionic surfactant.
Its preparation method, comprises the following steps：
S1, the polypropylene of the proportion, polyethylene, maleic anhydride, benzoyl peroxide and thioester are added to into melting tank
In, in 170 DEG C of high temperature, it is slowly stirred in heating, until completely melted, with the rotating speed of 650r/min, high-speed stirred 30min,
It is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added to the concentration of the proportion in the hydrochloric acid solution of 1.2mol/L, immersion
22min, is then filtered, and in the environment of 100 DEG C is vacuum dried 30min, obtains glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the γ-ammonia of the proportion
Foster propyl-triethoxysilicane and rare earth material, ultrasonic disperse 25min obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 160 DEG C passes through double screw extruder after being well mixed
Extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after immersion 1.5h, is taken
Go out drying.
Embodiment three
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, including the raw material of following weight portion：Polypropylene 62
Part, 50 parts of polyethylene, 2 parts of silica 1,15 parts of maleic anhydride, 1 part of benzoyl peroxide, 8 parts of dimethylformamide, glass
15 parts of fiber, 18 parts of size, 2 parts of methacryl chlorination chromium complex, 3 parts of antioxidant, 2.5 parts of rare earth material, hydrochloric acid
16 parts of solution, 24 parts of nonionic surfactant.
Its preparation method, comprises the following steps：
S1, the polypropylene of the proportion, polyethylene, maleic anhydride, benzoyl peroxide and dimethylformamide are added to it is molten
Melt in tank, in 190 DEG C of high temperature, be slowly stirred in heating, until completely melted, with the rotating speed of 700r/min, high-speed stirred
18min, is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added to the concentration of the proportion in the hydrochloric acid solution of 0.8mol/L, immersion
15min, is then filtered, and in the environment of 70 DEG C is vacuum dried 50min, obtains glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the methyl-prop of the proportion
Alkene chloride chromium complex and rare earth material, ultrasonic disperse 34min obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 150 DEG C passes through double screw extruder after being well mixed
Extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after immersion 3h, is taken out
Drying.
Example IV
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, including the raw material of following weight portion：Polypropylene 68
Part, 45 parts of polyethylene, 0 part of silica 1,20 parts of maleic anhydride, 3 parts of benzoyl peroxide, 5 parts of thioester, glass fibre
10 parts, that 10 parts of size, γ-ammonia support 1.2 parts of propyl-triethoxysilicane, 2.5 parts of antioxidant, 3 parts of rare earth material, hydrochloric acid is molten
14 parts of liquid, 22 parts of nonionic surfactant.
Its preparation method, comprises the following steps：
S1, the polypropylene of the proportion, polyethylene, maleic anhydride, benzoyl peroxide and thioester are added to into melting tank
In, in 175 DEG C of high temperature, it is slowly stirred in heating, until completely melted, with the rotating speed of 520r/min, high-speed stirred 28min,
It is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added to the concentration of the proportion in the hydrochloric acid solution of 1mol/L, immersion
20min, is then filtered, and in the environment of 90 DEG C is vacuum dried 35min, obtains glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the γ-ammonia of the proportion
Foster propyl-triethoxysilicane and rare earth material, ultrasonic disperse 22min obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 168 DEG C passes through double screw extruder after being well mixed
Extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after immersion 1h, is taken out
Drying.
Embodiment five
A kind of lead-acid accumulator macromolecule composite diaphragm proposed by the present invention, including the raw material of following weight portion：Polypropylene 65
Part, 55 parts of polyethylene, 5 parts of silica, 25 parts of maleic anhydride, 2.5 parts of benzoyl peroxide, 7 parts of dimethylformamide, glass
11 parts of fiber, 20 parts of size, 1.8 parts of γ propyltrimethoxy silane, 2 parts of antioxidant, 5 parts of rare earth material, hydrochloric acid solution
15 parts, 16 parts of nonionic surfactant.
Its preparation method, comprises the following steps：
S1, the polypropylene of the proportion, polyethylene, maleic anhydride, benzoyl peroxide and dimethylformamide are added to it is molten
Melt in tank, in 180 DEG C of high temperature, be slowly stirred in heating, until completely melted, with the rotating speed of 680r/min, high-speed stirred
25min, is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added to the concentration of the proportion in the hydrochloric acid solution of 1.1mol/L, immersion
25min, is then filtered, and in the environment of 85 DEG C is vacuum dried 40min, obtains glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the γ-the third of the proportion
Base trimethoxy silane and rare earth material, ultrasonic disperse 30min obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 155 DEG C passes through double screw extruder after being well mixed
Extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after immersion 2.5h, is taken
Go out drying.
The lead-acid accumulator performance of macromolecule composite diaphragm prepared in the embodiment of the present invention one～five is tested respectively, is obtained
Go out following result：
| Embodiment | One | Two | Three | Four | Five |
| Base is thick（mm） | 0.73 | 0.65 | 0.72 | 0.69 | 0.66 |
| Maximum diameter of hole（μm） | 12 | 18 | 15 | 9 | 13 |
| Tensile strength（kN/m） | 5.9 | 6.7 | 6.1 | 6.5 | 6.3 |
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its invention
Design in addition equivalent or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of lead-acid accumulator macromolecule composite diaphragm, it is characterised in that including the raw material of following weight portion：Polypropylene 50
～70 parts, 40～60 parts of polyethylene, 5～12 parts of silica, 15～25 parts of maleic anhydride, 1～3 part of initiator, additive 4～
8 parts, 8～15 parts of glass fibre, 10～20 parts of size, 0.8～2 part of coupling agent, 1～3 part of antioxidant, rare earth material 2～5
Part, 10～16 parts of hydrochloric acid solution, 16～24 parts of nonionic surfactant.
2. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that including following heavy
The raw material of amount part：55～65 parts of polypropylene, 45～55 parts of polyethylene, 6～10 parts of silica, 18～22 parts of maleic anhydride, draw
Send out 1.5～2.5 parts of agent, 5～7 parts of additive, 10～14 parts of glass fibre, 12～18 parts of size, 1～1.8 part of coupling agent, anti-
1.5～2.5 parts of oxidant, 3～4 parts of rare earth material, 12～15 parts of hydrochloric acid solution, 18～22 parts of nonionic surfactant.
3. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that including following heavy
The raw material of amount part：60 parts of polypropylene, 50 parts of polyethylene, 8 parts of silica, 20 parts of maleic anhydride, 2 parts of initiator, additive 6
Part, 12 parts of glass fibre, 15 parts of size, 1.5 parts of coupling agent, 2 parts of antioxidant, 3.5 parts of rare earth material, hydrochloric acid solution 14
Part, 20 parts of nonionic surfactant.
4. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that the initiator
For benzoyl peroxide.
5. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that the additive
For the one kind in dimethylformamide or thioester.
6. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that the coupling agent
For the one kind in silane coupler or aluminate coupling agent, preferred γ-ammonia supports propyl-triethoxysilicane, γ-propyl group trimethoxy
One kind in base silane or methacryl chlorination chromium complex.
7. a kind of lead-acid accumulator macromolecule composite diaphragm according to claim 1, it is characterised in that the hydrochloric acid is molten
Liquid is hydrochloric acid solution that concentration is 0.8～1.2mol/L.
8. preparation method of a kind of lead-acid accumulator with macromolecule composite diaphragm, it is characterised in that comprise the following steps：
S1, by the polypropylene of the proportion, polyethylene, maleic anhydride, initiator and additive be added to melting tank in, in high temperature
170～190 DEG C, it is slowly stirred in heating, until completely melted, with the rotating speed of 520～700r/min, high-speed stirred 18～
30min, is well mixed to obtain modified mixture A；
S2, the glass fibre of the proportion is added in the hydrochloric acid solution of the proportion, soaks 15～25min, then carry out
Filter, and 30～50min is vacuum dried in the environment of 70～100 DEG C, obtain glass fibre B；
S3, the glass fibre B of gained in step S2 is added in the size of the proportion, adds the coupling agent of the proportion
And rare earth material, 22～34min of ultrasonic disperse, obtain modified glass fibre Vc；
S4, the modified glass fibre Vc of gained in step S3 is added in step S1 in the modified mixture A of gained, adds institute
The silica and antioxidant of proportion are stated, the mixed at high speed in the environment of 146～168 DEG C passes through twin-screw after being well mixed
Extruder extrusion, it is compressing；
S5, sheet material compressing in step S4 is placed in the nonionic surfactant of the proportion, after 1～3h of immersion,
Take out drying.
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| CN107732114A (en) * | 2017-09-27 | 2018-02-23 | 芜湖华力五星电源科技有限公司 | A kind of nano colloidal silica lead-acid battery dividing plate used for electric vehicle |
| CN107732105A (en) * | 2017-09-27 | 2018-02-23 | 芜湖华力五星电源科技有限公司 | A kind of valve controlled sealed lead-acid accumulator dividing plate and preparation method thereof |
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| CN114374001A (en) * | 2021-12-31 | 2022-04-19 | 江苏理士电池有限公司 | Novel lead-acid storage battery colloidal electrolyte and preparation method thereof |
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| CN107069600A (en) * | 2017-04-25 | 2017-08-18 | 瞿慧 | A kind of building pipe |
| CN107732114A (en) * | 2017-09-27 | 2018-02-23 | 芜湖华力五星电源科技有限公司 | A kind of nano colloidal silica lead-acid battery dividing plate used for electric vehicle |
| CN107732105A (en) * | 2017-09-27 | 2018-02-23 | 芜湖华力五星电源科技有限公司 | A kind of valve controlled sealed lead-acid accumulator dividing plate and preparation method thereof |
| CN114361582A (en) * | 2021-12-08 | 2022-04-15 | 佛山(华南)新材料研究院 | Polymer electrolyte membrane, preparation method thereof and battery |
| CN114374001A (en) * | 2021-12-31 | 2022-04-19 | 江苏理士电池有限公司 | Novel lead-acid storage battery colloidal electrolyte and preparation method thereof |
| CN114374001B (en) * | 2021-12-31 | 2023-10-27 | 江苏理士电池有限公司 | Novel lead-acid storage battery colloid electrolyte and preparation method thereof |
| CN114665219A (en) * | 2022-03-10 | 2022-06-24 | 江苏厚生新能源科技有限公司 | High-flame-retardance and high-breathability coating membrane and preparation method thereof |
| CN114665219B (en) * | 2022-03-10 | 2023-09-01 | 江苏厚生新能源科技有限公司 | High-flame-retardance and high-air-permeability coated diaphragm and preparation method thereof |
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