CN110808352A - PE partition plate for increasing capacity of storage battery and preparation process thereof - Google Patents
PE partition plate for increasing capacity of storage battery and preparation process thereof Download PDFInfo
- Publication number
- CN110808352A CN110808352A CN201911100497.3A CN201911100497A CN110808352A CN 110808352 A CN110808352 A CN 110808352A CN 201911100497 A CN201911100497 A CN 201911100497A CN 110808352 A CN110808352 A CN 110808352A
- Authority
- CN
- China
- Prior art keywords
- parts
- stirring
- storage battery
- increasing
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- 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
- H01M50/411—Organic 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a PE separator plate for increasing the capacity of a storage battery, which comprises the following raw materials in parts by weight: 75-85 parts of ultrahigh molecular weight polyethylene, 20-30 parts of epoxy resin, 40-60 parts of high specific surface area silicon dioxide, 15-25 parts of modified bentonite, 2-6 parts of furfural acetone resin and 5-10 parts of nano porous pre-activator. The invention takes the ultra-high molecular weight polyethylene as the main material of the matrix, the added epoxy resin is taken as the blending agent of the ultra-high molecular weight polyethylene, the performance of the whole material can be improved under the combined action of the epoxy resin and the ultra-high molecular weight polyethylene, and the added raw materials such as the silicon dioxide with specific surface area, the modified bentonite and the like further improve the performance of the material, so that the prepared PE clapboard can still enable the storage battery to have high capacitance capacity even if the PE clapboard is introduced into the storage battery under the conditions of corrosion and long-term storage battery charging and discharging.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to a PE (polyethylene) clapboard for increasing the capacity of a storage battery and a preparation process thereof.
Background
The device for converting chemical energy into electric energy is called a chemical battery, generally called a battery for short. After discharging, the internal active material can be regenerated by charging to store the electric energy as chemical energy; chemical energy is converted into electrical energy again when electrical discharge is required. Such batteries are referred to as secondary batteries, also called secondary batteries; a secondary battery is a device for directly converting chemical energy into electrical energy, and is a battery designed to be rechargeable, and recharging is achieved through a reversible chemical reaction, and is generally referred to as a lead-acid battery, which is one of batteries and belongs to a secondary battery. The working principle is as follows: when the battery is charged, the internal active substance is regenerated by using external electric energy, the electric energy is stored into chemical energy, and the chemical energy is converted into electric energy again to be output when the battery needs to be discharged, such as a mobile phone battery and the like which are commonly used in life.
The separator is an important component in the storage battery, and is arranged between a positive plate and a negative plate of the storage battery, and the quality of the separator directly influences the discharge capacity and the charge-discharge cycle service life of the storage battery. The separator has the following functions in the storage battery, and firstly, the separator prevents the anode and the cathode from contacting with each other to generate the internal short circuit of the battery; secondly, the pole plate has certain strength to prevent the pole plate from deforming and bending and prevent the active substances from falling off; and thirdly, the required amount of electrolyte is stored in the separator to ensure higher conductivity and the requirement of battery reaction.
The existing PE separator has certain corrosivity because a certain amount of electrolyte is stored inside and is composed of substances such as organic salt and the like, and meanwhile, the performance of the PE separator is deteriorated under the charging and discharging conditions of a storage battery for a long time, so that the capacitance capacity of the storage battery is influenced.
The prior Chinese patent literature publication number is as follows: CN106340605A discloses a novel storage battery PE separator production process, which comprises the following steps: (1) weighing raw materials in parts by weight; (2) primary mixing: mixing the raw materials for 30-60min at the rotating speed of 300-500r/min at the mixing temperature of 45 ℃; (3) secondary material mixing: after the first mixing, adding process oil into the raw materials to enable the process oil to account for 60% of the weight of the mixed materials, mixing and stirring the mixed materials at the rotating speed of 80-120r/min for 10-30min, wherein the mixing temperature is 35 ℃; (4) adding the mixed materials into an extruder and extruding to obtain a semi-finished PE separator product; (5) pressurizing and shaping the PE partition plate semi-finished product through a five-roller calender to obtain a PE partition plate semi-finished product with reinforcing ribs; (6) cooling, pumping oil and rolling the PE baffle plate semi-finished product with the reinforcing ribs to obtain the PE baffle plate; the PE separator disclosed in the patent document is prepared from conventional raw materials, and the capacitance capacity of the storage battery is remarkably reduced under the conditions of corrosion and long-term storage battery charging and discharging.
Disclosure of Invention
The present invention is directed to a PE separator for increasing the capacity of a battery and a process for preparing the same, which solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a PE separator plate for increasing the capacity of a storage battery, which comprises the following raw materials in parts by weight:
75-85 parts of ultrahigh molecular weight polyethylene, 20-30 parts of epoxy resin, 40-60 parts of high specific surface area silicon dioxide, 15-25 parts of modified bentonite, 2-6 parts of furfural acetone resin and 5-10 parts of nano porous pre-activator;
the preparation method of the nano porous pre-activator comprises the steps of firstly placing nano porous nickel in a ferric chloride solution with the mass fraction of 20% to react for 10-20min, then centrifuging, washing and drying, then placing the nano porous nickel in an alumina crucible to be sintered at the sintering temperature of 1000-1400 ℃, sintering for 1-2h, and obtaining the nano porous pre-activator after sintering.
The invention further comprises the following steps: the PE separator plate for increasing the capacity of the storage battery comprises the following raw materials in parts by weight:
78-82 parts of ultrahigh molecular weight polyethylene, 23-28 parts of epoxy resin, 43-58 parts of high specific surface area silicon dioxide, 18-23 parts of modified bentonite, 3-5 parts of furfural acetone resin and 6-9 parts of nano porous pre-activator.
The invention further comprises the following steps: the PE separator plate for increasing the capacity of the storage battery comprises the following raw materials in parts by weight:
80 parts of ultrahigh molecular weight polyethylene, 25 parts of epoxy resin, 50 parts of high specific surface area silicon dioxide, 20 parts of modified bentonite, 4 parts of furfural acetone resin and 7.5 parts of nano porous preactivator.
The invention further comprises the following steps: the preparation method of the high specific surface area silicon dioxide comprises the following steps: firstly carrying out thermal activation treatment on the silicon dioxide at the temperature of 150-250 ℃ for 25-35min, then reducing the temperature to 120 ℃ at the speed of 2 ℃/min, continuing to keep the temperature for 15min, finally cooling to the room temperature, then adding the mixed acid, stirring for 20-30min at the stirring speed of 300-500r/min, then washing, centrifuging, then placing the mixture in a ball mill for ball milling for 20-30min, and finishing the ball milling to obtain the silicon dioxide with the high specific surface area.
The invention further comprises the following steps: the preparation method of the mixed acid comprises the steps of mixing 30-40% of dilute sulfuric acid and 20-30% of phosphoric acid according to the weight ratio of 1:3, then adding dimethylacetamide, and stirring at a constant rotating speed of 100-150r/min for 20-30 min.
The invention further comprises the following steps: the preparation method of the modified bentonite comprises the steps of firstly carrying out corona treatment on the bentonite, then placing the bentonite in a coupling agent KH560 for boiling for 10-20min at the boiling temperature of 100 ℃, then washing and drying the bentonite, then placing the bentonite in a reaction kettle, then adding fluorocarbon resin and nano-diamond powder accounting for 20-30% of the total amount of the bentonite, stirring the mixture for 30-40min at the pressure of 20-30MPa and the temperature of 85-95 ℃ at the rotation speed of 1000r/min with 300-materials, finishing stirring, and then centrifuging and drying the mixture to obtain the modified bentonite.
The invention further comprises the following steps: the corona treatment power is 2-10Kw, the treatment temperature is 10-50 ℃, and the treatment time is 15-25 min.
The invention further comprises the following steps: the corona treatment power is 6Kw, the treatment temperature is 30 ℃, and the treatment time is 20 min.
The invention also provides a preparation method of the PE clapboard for increasing the capacity of the storage battery, which comprises the following steps:
the method comprises the following steps: weighing the raw materials of each component as required:
adding the ultra-high molecular weight polyethylene, the epoxy resin, the modified bentonite and the furfural acetone resin into a high-speed stirrer, and stirring for 20-30min at the rotating speed of 1000-1500r/min to obtain a mixed material A;
adding high-specific-surface-area silicon dioxide and a nano porous pre-activator into the mixed material A, stirring at a high speed, then stirring at a low speed, and obtaining a mixed material B after stirring;
and step four, feeding the mixed material B into a double-screw extruder for extrusion, and cooling after extrusion to obtain the PE partition plate.
The invention further comprises the following steps: the specific steps of high-speed stirring and low-speed stirring in the third step are firstly stirring at the rotating speed of 1100r/min for 45-55min, then stirring at the rotating speed of 150-250r/min for 1-2h, and finishing stirring.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention takes the ultra-high molecular weight polyethylene as the main material of the matrix, the added epoxy resin is taken as the blending agent of the ultra-high molecular weight polyethylene, the performance of the whole material can be improved under the combined action of the epoxy resin and the ultra-high molecular weight polyethylene, and the added raw materials such as the silicon dioxide with specific surface area, the modified bentonite and the like further improve the performance of the material, so that the prepared PE clapboard can still enable the storage battery to have high capacitance capacity even if the PE clapboard is introduced into the storage battery under the conditions of corrosion and long-term storage battery charging and discharging.
(2) The added nano-porous pre-activator takes nano-porous nickel as a matrix, the nano-porous nickel can enhance the capacitance capacity of the material in the material, and simultaneously, a large amount of aluminum elements in an alumina crucible activate the nano-porous nickel under the high-temperature condition after being calcined in the alumina crucible, so that the nano-porous nickel stimulates the reaction between raw materials in the partition material, and the combination effect between the raw materials is better.
(3) The bentonite added in the invention has a lamellar structure, can be inserted into the material to play a role in connecting raw materials of the material, the bentonite is firstly subjected to corona treatment, the surface activity is firstly improved, the surface becomes rougher, and the modification is further easier by a coupling agent, fluorocarbon resin and the like, the bentonite after the coupling agent treatment is more compatible with ultrahigh molecular weight polyethylene and epoxy resin prepolymer in the material, the fluorocarbon resin has very strong corrosion resistance, and meanwhile, the nano diamond powder has very strong stability and is introduced into the interlayer spacing of the bentonite under the ultrahigh pressure condition, so that the whole material has very strong corrosion resistance.
(4) The invention relates to a preparation method of high specific surface area silicon dioxide, which comprises the steps of firstly carrying out thermal activation treatment on silicon dioxide, aiming at activating the silicon dioxide, being easier to strip by mixed acid in the mixed acid, and finally carrying out further stripping treatment in a ball mill, so that the specific surface area of the prepared silicon dioxide is greatly improved, and the prepared silicon dioxide can improve the capacitance of the material in a PE plate, simultaneously plays the role of a bearing body and is matched with modified bentonite, so that the material still has strong capacitance under the conditions of corrosion resistance and charging and discharging.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the PE separator for increasing the capacity of the storage battery comprises the following raw materials in parts by weight:
75 parts of ultrahigh molecular weight polyethylene, 20 parts of epoxy resin, 40 parts of high specific surface area silicon dioxide, 15 parts of modified bentonite, 2 parts of furfural acetone resin and 5 parts of nano porous preactivator;
the preparation method of the nano-porous pre-activator comprises the steps of placing nano-porous nickel into a ferric chloride solution with the mass fraction of 20% for reaction for 10min, then centrifuging, washing and drying, placing the nano-porous nickel into an alumina crucible for sintering treatment, wherein the sintering temperature is 1000 ℃, sintering is carried out for 1h, and the sintering is finished to obtain the nano-porous pre-activator.
The preparation method of the silica with high specific surface area of the embodiment comprises the following steps: thermal activation treatment is carried out on silicon dioxide at 150 ℃ for 25min, then the temperature is reduced to 120 ℃ at the speed of 2 ℃/min, heat preservation is continued for 15min, finally cooling is carried out to the room temperature, then the silicon dioxide is added into mixed acid and stirred for 20min, the stirring speed is 300r/min, then washing and centrifugation are carried out, the mixture is placed in a ball mill for ball milling for 20min, and the silicon dioxide with high specific surface area is obtained after ball milling is finished.
The preparation method of the mixed acid of the embodiment is to mix the dilute sulfuric acid with the mass fraction of 30% and the phosphoric acid with the mass fraction of 20% according to the weight ratio of 1:3, then add the dimethyl acetamide, and stir the mixture for 20min at the constant rotating speed of 100 r/min.
The preparation method of the modified bentonite in this embodiment is to perform corona treatment on the bentonite, then to boil the bentonite in a coupling agent KH560 for 10min at 100 ℃, then to wash with water, to dry, then to put the bentonite in a reaction kettle, then to add fluorocarbon resin and nano diamond powder 20% of the total amount of the bentonite, to stir the mixture for 30min at a rotation speed of 300r/min under a pressure of 20MPa and a temperature of 85 ℃, to finish stirring, to centrifuge and to dry the mixture, and to obtain the modified bentonite.
The corona treatment power of this example was 2Kw, the treatment temperature was 10 ℃ and the treatment time was 15 min.
The method for preparing the PE separator for increasing the capacity of the storage battery of the embodiment includes the following steps:
the method comprises the following steps: weighing the raw materials of each component as required:
adding the ultra-high molecular weight polyethylene, the epoxy resin, the modified bentonite and the furfural acetone resin into a high-speed stirrer, and stirring for 20min at the rotating speed of 1000r/min to obtain a mixed material A;
adding high-specific-surface-area silicon dioxide and a nano porous pre-activator into the mixed material A, stirring at a high speed, then stirring at a low speed, and obtaining a mixed material B after stirring;
and step four, feeding the mixed material B into a double-screw extruder for extrusion, and cooling after extrusion to obtain the PE partition plate.
The specific steps of high-speed stirring and low-speed stirring in the third step of this embodiment are firstly stirring at a rotation speed of 1100r/min for 45min, and then stirring at a rotation speed of 150r/min for 1h, and then stirring is completed.
Example 2:
the PE separator for increasing the capacity of the storage battery comprises the following raw materials in parts by weight:
85 parts of ultrahigh molecular weight polyethylene, 30 parts of epoxy resin, 60 parts of high specific surface area silicon dioxide, 25 parts of modified bentonite, 6 parts of furfural acetone resin and 10 parts of nano porous preactivator;
the preparation method of the nano-porous pre-activator comprises the steps of placing nano-porous nickel in a ferric chloride solution with the mass fraction of 20% for reacting for 20min, then centrifuging, washing and drying, placing the nano-porous nickel in an alumina crucible for sintering treatment, wherein the sintering temperature is 1400 ℃, sintering is carried out for 2h, and the nano-porous pre-activator is obtained after sintering.
The preparation method of the silica with high specific surface area of the embodiment comprises the following steps: performing thermal activation treatment on the silicon dioxide at 250 ℃ for 35min, then reducing the temperature to 120 ℃ at the speed of 2 ℃/min, continuing to preserve heat for 15min, finally cooling to room temperature, then adding the silicon dioxide into mixed acid, stirring for 30min at the stirring speed of 500r/min, then washing, centrifuging, then placing the mixture into a ball mill for ball milling for 30min, and finishing ball milling to obtain the silicon dioxide with high specific surface area.
The preparation method of the mixed acid of the embodiment is to mix the dilute sulfuric acid with the mass fraction of 40% and the phosphoric acid with the mass fraction of 30% according to the weight ratio of 1:3, then add the dimethyl acetamide, and stir the mixture for 30min at the constant rotating speed of 150 r/min.
The preparation method of the modified bentonite of the embodiment includes the steps of firstly performing corona treatment on the bentonite, then placing the bentonite in a coupling agent KH560 for boiling for 20min at the boiling temperature of 100 ℃, then washing and drying the bentonite, then placing the bentonite in a reaction kettle, then adding fluorocarbon resin and nano diamond powder accounting for 30% of the total amount of the bentonite, stirring the mixture for 40min at the pressure of 30MPa and the temperature of 95 ℃ and at the rotating speed of 1000r/min, finishing stirring, centrifuging and drying the mixture, and obtaining the modified bentonite.
The corona treatment power of this example was 10Kw, the treatment temperature was 50 ℃ and the treatment time was 25 min.
The method for preparing the PE separator for increasing the capacity of the storage battery of the embodiment includes the following steps:
the method comprises the following steps: weighing the raw materials of each component as required:
adding the ultra-high molecular weight polyethylene, the epoxy resin, the modified bentonite and the furfural acetone resin into a high-speed stirrer, and stirring for 30min at the rotating speed of 1500r/min to obtain a mixed material A;
adding high-specific-surface-area silicon dioxide and a nano porous pre-activator into the mixed material A, stirring at a high speed, then stirring at a low speed, and obtaining a mixed material B after stirring;
and step four, feeding the mixed material B into a double-screw extruder for extrusion, and cooling after extrusion to obtain the PE partition plate.
The specific steps of high-speed stirring and low-speed stirring in the third step of this embodiment are firstly stirring at a rotation speed of 1100r/min for 55min, and then stirring at a rotation speed of 250r/min for 2h, and then stirring is completed.
Example 3:
the PE separator for increasing the capacity of the storage battery comprises the following raw materials in parts by weight:
80 parts of ultrahigh molecular weight polyethylene, 25 parts of epoxy resin, 50 parts of high specific surface area silicon dioxide, 20 parts of modified bentonite, 4 parts of furfural acetone resin and 7.5 parts of nano porous preactivator;
the preparation method of the nano-porous pre-activator comprises the steps of placing nano-porous nickel in a ferric chloride solution with the mass fraction of 20% for reacting for 15min, then centrifuging, washing and drying, placing the nano-porous nickel in an alumina crucible for sintering treatment, wherein the sintering temperature is 1200 ℃, sintering is carried out for 1.5h, and the nano-porous pre-activator is obtained after sintering.
The preparation method of the silica with high specific surface area of the embodiment comprises the following steps: performing thermal activation treatment on the silicon dioxide at 200 ℃ for 30min, then reducing the temperature to 120 ℃ at the speed of 2 ℃/min, continuing to preserve heat for 15min, finally cooling to room temperature, then adding the silicon dioxide into mixed acid, stirring for 25min at the stirring speed of 400r/min, then washing, centrifuging, then placing the mixture into a ball mill for ball milling for 25min, and obtaining the silicon dioxide with high specific surface area after the ball milling is finished.
The preparation method of the mixed acid of the embodiment is to mix the dilute sulfuric acid with the mass fraction of 35% and the phosphoric acid with the mass fraction of 25% according to the weight ratio of 1:3, then add the dimethyl acetamide, and stir at the constant rotating speed of 125r/min for 25 min.
The preparation method of the modified bentonite of the embodiment includes the steps of firstly performing corona treatment on the bentonite, then placing the bentonite in a coupling agent KH560 for boiling for 15min at the boiling temperature of 100 ℃, then washing and drying the bentonite, then placing the bentonite in a reaction kettle, then adding fluorocarbon resin and nano diamond powder accounting for 25% of the total amount of the bentonite, stirring the mixture for 35min at the pressure of 25MPa and the temperature of 90 ℃ and at the rotating speed of 700r/min, after the stirring is finished, centrifuging and drying the mixture to obtain the modified bentonite.
The corona treatment power of this example was 6Kw, the treatment temperature was 30 ℃ and the treatment time was 20 min.
The method for preparing the PE separator for increasing the capacity of the storage battery of the embodiment includes the following steps:
the method comprises the following steps: weighing the raw materials of each component as required:
adding the ultra-high molecular weight polyethylene, the epoxy resin, the modified bentonite and the furfural acetone resin into a high-speed stirrer, and stirring for 25min at the rotating speed of 1250r/min to obtain a mixed material A;
adding high-specific-surface-area silicon dioxide and a nano porous pre-activator into the mixed material A, stirring at a high speed, then stirring at a low speed, and obtaining a mixed material B after stirring;
and step four, feeding the mixed material B into a double-screw extruder for extrusion, and cooling after extrusion to obtain the PE partition plate.
The specific steps of high-speed stirring and low-speed stirring in the third step of this embodiment are firstly stirring at a rotation speed of 1100r/min for 50min, and then stirring at a rotation speed of 200r/min for 1.5h, and then stirring is completed.
Comparative example 1:
the materials and preparation process were substantially the same as those of example 3, except that the nanoporous preactivator was not added.
Comparative example 2:
the materials and preparation process were substantially the same as those of example 3, except that no modified bentonite was added.
Comparative example 3:
the materials and preparation process are basically the same as those of example 3, except that Chinese patent document publication No.: CN106340605A discloses a raw material and a method in the embodiment 1 of the production process of the novel storage battery PE separator.
And (3) performance testing: the PE separators prepared in examples 1-3 and comparative examples 1-3 are treated for 1h under the conditions of simulating capacitor electrolyte and charging and discharging, and then the performance of the PE separators in the capacitor is tested
| Group of | Initial discharge capacity (mAh/g) | Initial charge (mAh/g) | Coulombic efficiency (%) |
| Example 1 | 1314 | 1221 | 99.3 |
| Example 2 | 1310 | 1218 | 99.1 |
| Example 3 | 1319 | 1224 | 99.4 |
| Comparative example 1 | 1025 | 1107 | 93.2 |
| Comparative example 2 | 1124 | 1024 | 91.1 |
| Comparative example 3 | 689 | 721 | 68.9 |
TABLE 1
As shown in Table 1, examples 1 to 3 according to the present invention and comparative examples 1 to 3, example 3 according to the present invention had an initial discharge of 1319mAh/g, an initial charge of 1224mAh/g, and a coulombic efficiency of 99.4%, whereas comparative example 3 had an initial discharge of 1319mAh/g, an initial charge of 721mAh/g, and a coulombic efficiency of 68.9%.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The PE separator for increasing the capacity of the storage battery is characterized by comprising the following raw materials in parts by weight:
75-85 parts of ultrahigh molecular weight polyethylene, 20-30 parts of epoxy resin, 40-60 parts of high specific surface area silicon dioxide, 15-25 parts of modified bentonite, 2-6 parts of furfural acetone resin and 5-10 parts of nano porous pre-activator;
the preparation method of the nano porous pre-activator comprises the steps of firstly placing nano porous nickel in a ferric chloride solution with the mass fraction of 20% to react for 10-20min, then centrifuging, washing and drying, then placing the nano porous nickel in an alumina crucible to be sintered at the sintering temperature of 1000-1400 ℃, sintering for 1-2h, and obtaining the nano porous pre-activator after sintering.
2. The PE separator plate for increasing the battery capacity according to claim 1, wherein the PE separator plate for increasing the battery capacity comprises the following raw materials in parts by weight:
78-82 parts of ultrahigh molecular weight polyethylene, 23-28 parts of epoxy resin, 43-58 parts of high specific surface area silicon dioxide, 18-23 parts of modified bentonite, 3-5 parts of furfural acetone resin and 6-9 parts of nano porous pre-activator.
3. The PE separator plate for increasing the battery capacity according to claim 2, wherein the PE separator plate for increasing the battery capacity comprises the following raw materials in parts by weight:
80 parts of ultrahigh molecular weight polyethylene, 25 parts of epoxy resin, 50 parts of high specific surface area silicon dioxide, 20 parts of modified bentonite, 4 parts of furfural acetone resin and 7.5 parts of nano porous preactivator.
4. A PE separator for increasing the capacity of a storage battery as claimed in claim 1, wherein said high specific surface area silica is prepared by: firstly carrying out thermal activation treatment on the silicon dioxide at the temperature of 150-250 ℃ for 25-35min, then reducing the temperature to 120 ℃ at the speed of 2 ℃/min, continuing to keep the temperature for 15min, finally cooling to the room temperature, then adding the mixed acid, stirring for 20-30min at the stirring speed of 300-500r/min, then washing, centrifuging, then placing the mixture in a ball mill for ball milling for 20-30min, and finishing the ball milling to obtain the silicon dioxide with the high specific surface area.
5. The PE separator plate for increasing the capacity of a storage battery as claimed in claim 4, wherein the mixed acid is prepared by mixing 30-40% by weight of dilute sulfuric acid and 20-30% by weight of phosphoric acid in a weight ratio of 1:3, adding dimethylacetamide, and stirring at a constant rotation speed of 100-150r/min for 20-30 min.
6. The PE separator plate for increasing the storage battery capacity as claimed in claim 1, wherein the modified bentonite is prepared by subjecting bentonite to corona treatment, boiling in KH560 as a coupling agent for 10-20min at 100 ℃, washing with water, drying, placing in a reaction kettle, adding fluorocarbon resin and nano-diamond powder 20-30% of the total amount of bentonite, stirring at a pressure of 20-30MPa and a temperature of 85-95 ℃ at a rotation speed of 300-1000r/min for 30-40min, stirring, centrifuging, and drying to obtain the modified bentonite.
7. A PE separator plate for increasing the capacity of a storage battery as in claim 6, wherein the corona treatment power is 2-10Kw, the treatment temperature is 10-50 ℃ and the treatment time is 15-25 min.
8. The PE separator plate for increasing the battery capacity according to claim 7, wherein the corona treatment power is 6Kw, the treatment temperature is 30 ℃, and the treatment time is 20 min.
9. A method of producing a PE separator for increasing the capacity of a storage battery as claimed in claims 1-8, comprising the steps of:
the method comprises the following steps: weighing the raw materials of each component as required:
adding the ultra-high molecular weight polyethylene, the epoxy resin, the modified bentonite and the furfural acetone resin into a high-speed stirrer, and stirring for 20-30min at the rotating speed of 1000-1500r/min to obtain a mixed material A;
adding high-specific-surface-area silicon dioxide and a nano porous pre-activator into the mixed material A, stirring at a high speed, then stirring at a low speed, and obtaining a mixed material B after stirring;
and step four, feeding the mixed material B into a double-screw extruder for extrusion, and cooling after extrusion to obtain the PE partition plate.
10. The method as claimed in claim 9, wherein the step of agitating at high speed and then agitating at low speed in the third step comprises agitating at a speed of 1100r/min for 45-55min, and then agitating at a speed of 150-250r/min for 1-2h, and the agitation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100497.3A CN110808352A (en) | 2019-11-12 | 2019-11-12 | PE partition plate for increasing capacity of storage battery and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100497.3A CN110808352A (en) | 2019-11-12 | 2019-11-12 | PE partition plate for increasing capacity of storage battery and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110808352A true CN110808352A (en) | 2020-02-18 |
Family
ID=69502264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911100497.3A Withdrawn CN110808352A (en) | 2019-11-12 | 2019-11-12 | PE partition plate for increasing capacity of storage battery and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110808352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403665A (en) * | 2020-03-25 | 2020-07-10 | 石狮申泰新材料科技有限公司 | Ceramic-coated lithium battery diaphragm and preparation method thereof |
-
2019
- 2019-11-12 CN CN201911100497.3A patent/CN110808352A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403665A (en) * | 2020-03-25 | 2020-07-10 | 石狮申泰新材料科技有限公司 | Ceramic-coated lithium battery diaphragm and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102354751B (en) | Formula and preparation method of high energy storage lead-acid battery lead paste | |
| CN107230777A (en) | A kind of lead-acid accumulator lead plaster and preparation method thereof | |
| CN109755481B (en) | Manufacturing process for improving low-temperature performance of lead storage battery | |
| CN102610801B (en) | Hydrothermal preparation method of carbon coated lead powder composite materials for lead carbon super batteries | |
| CN109921020A (en) | A kind of preparation method of high-capacity lithium ion cell hard charcoal negative electrode material | |
| CN105977470B (en) | Silicon dioxide activity carbon composite, preparation method and lead carbon battery | |
| CN108987713A (en) | A kind of preparation method of carbon/lithium sulfide composite material | |
| CN101841029B (en) | Cathode active material of lead-acid battery for UPS (Uninterruptible Power Supply) | |
| CN111710861A (en) | High-performance lead-carbon negative electrode lead plaster and preparation method thereof | |
| CN110808352A (en) | PE partition plate for increasing capacity of storage battery and preparation process thereof | |
| CN108565427A (en) | A kind of preparation method of carbon/lithium titanate composite material | |
| CN107863518A (en) | A kind of lead-acid accumulator negative pole lead paste | |
| CN109256561B (en) | Hard carbon negative electrode material, manufacturing method thereof and method for manufacturing battery by using hard carbon negative electrode material | |
| CN106207101A (en) | Lead-acid accumulator and preparation method thereof | |
| CN112614980B (en) | Graphene lead-carbon battery positive grid and preparation method thereof | |
| CN112952106B (en) | Carbon-coated aluminum foil, preparation method thereof and lithium ion battery | |
| CN108923033A (en) | A kind of preparation method of the lithium-sulfur cell porous carbon positive electrode based on phase transfer method | |
| CN114373896A (en) | Processing technology of lead-acid green plate battery | |
| CN113972407A (en) | Ultra-thin lead-acid storage battery plate cluster module | |
| CN112448027B (en) | Blended gel polymer electrolyte and preparation method and application thereof | |
| CN112993489A (en) | Lithium battery capable of being charged quickly | |
| CN108493414B (en) | Lithium-sulfur battery positive electrode material and preparation method thereof | |
| CN106910895B (en) | Organic electrode material and preparation method and application thereof | |
| CN111661835A (en) | Sulfur/carbon composite material and preparation method and application thereof | |
| CN110137454A (en) | A kind of Pt/Polypyrrole composite material and its preparation method and application for lithium-sulfur cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200218 |
|
| WW01 | Invention patent application withdrawn after publication |