CN108281663A - The preparation method of conductive carbon fibre - Google Patents
The preparation method of conductive carbon fibre Download PDFInfo
- Publication number
- CN108281663A CN108281663A CN201711458138.6A CN201711458138A CN108281663A CN 108281663 A CN108281663 A CN 108281663A CN 201711458138 A CN201711458138 A CN 201711458138A CN 108281663 A CN108281663 A CN 108281663A
- Authority
- CN
- China
- Prior art keywords
- clad
- parts
- conductive carbon
- kirsite
- carbon fibre
- 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- Withdrawn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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
-
- 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)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present patent application belongs to battery technology field, specifically discloses a kind of preparation method of conductive carbon fibre, includes the following steps：(1) prepare coating layer material, (2) handle kirsite cladding material, and (3) handle coating layer material, (4) heating melting coating layer material, the processing of (5) clad, the processing of (6) stratum granulosum.Compared with prior art, the conductive carbon fibre that prepared by this method is free of lead, and zinc can be inhibited to be reacted in active material during battery use and generate hydrogen, the security performance of battery is ensure that, extend the service life of battery.
Description
Technical field
The invention belongs to battery technology fields, specifically disclose a kind of preparation method of conductive carbon fibre.
Background technology
The development of science and technology, the improvement of living quality of people, petroleum resources face a crisis, ball ecological environment is worsening,
Form new secondary battery and the science and technology in associated materials field and the dual social background of industry fast development.Market it is urgent
Demand makes new secondary battery come into being.Wherein accumulator has that voltage is steady, safe and reliable, the cheap, scope of application
Extensively, abundant raw materials and the advantages that high recycling utilization rate are yield is maximum in all kinds of batteries in the world, purposes is most wide one
Kind battery.
The operation principle of accumulator：So that internal active material is regenerated using external electric energy when charging, electric energy is stored as
Chemical energy needs that chemical energy is converted to electric energy output again when electric discharge.Although accumulator has many merits, but with respect to nickel-
For the battery systems such as metal hydride battery or lithium battery, the accumulator has the shortcomings that service life is short again.According to more
Item is studies have shown that the main reason for causing the life of storage battery short is：Battery anode active substance softens, so that active matter
Matter is fallen in electrolyte, is formed short circuit in inside battery, to make battery lose capacity, is caused battery failure.And it causes just
The reason of pole active material softens, falls off has prodigious relationship with the corrosion-deformation of grid.
Main composed structure is grid in accumulator, and grid accounts for about a quarter of lead-acid battery gross mass, and grid exists
Effect in accumulator mainly has at 3 points：First, as the carrier of active material, active material is coated on grid, active matter
Matter keeps and is supported by grid；Second, the conductor as electric current plays a part of afflux, confluence and defeated stream；Third, as
The stream of pole plate, which plays, to be made to act in balanced current distribution to active material.Grid is mainly woven using conductive carbon fibre,
Conductive carbon fibre is linear, will be raised at two conductive carbon fibre overlappings so that grid when intersection is compiled into the grid of plate
When as conductor afflux, confluence and defeated stream, the high spot of grid generates point discharge effect, makes to be transmitted to active material
Size of current differs, and the conductive performance of grid is bad.
Conductive carbon fibre mainly uses kirsite as conductive material at present, but since zinc and electrolyte will produce hydrogen,
It can lead to cell damage, lead can be added in kirsite, during inhibiting battery use, zinc effect generates hydrogen.And lead is in electricity
It can be etched into brown lead oxide during the use of pond, since the volume of brown lead oxide is more than the volume of lead, it will make kirsite material
Expect that volume increases, so that anode plate grid is under stress state, and then is gradually occurred creep and is linearly grown up, it is final to lose
Support the effect of active material.In addition, containing a large amount of lead in grid and metal bus-bar, hold in casting, chemical conversion, welding stage
Easily cause heavy metal lead pollution.
Invention content
The purpose of the present invention is providing a kind of preparation method of conductive carbon fibre, to solve the conductive material of conductive carbon fibre
In contain lead so that grid generates brown lead oxide in use, make grid using accelerate damage the problem of.
In order to achieve the above object, base case of the invention is：The preparation method of conductive carbon fibre, including following step
Suddenly：
(1) prepare coating layer material, clad includes the material of following mass fraction：87-91 parts of kirsite cladding material resists
2-4 parts of oxidant, 3-5 parts of polypropylene, 0.5-1.5 parts of graphite fibre, 0.5-1 parts of lithium；The kirsite cladding material includes following
The raw material of mass fraction：0.1-0.5 parts of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.5-2 parts of bismuth, 95-98 parts of zinc；
(2) processing kirsite cladding material carries out being mixed to get mixture, by mixture in indifferent gas to kirsite cladding material
Processing is dried in body, the water content of mixture is made to be less than 5%；Mixture is ground to 400- by then ground and mixed material
The powdery of 600 mesh；
(3) coating layer material is handled, antioxidant, graphite fibre and polypropylene are ground into the powdery of 500-800 mesh, it will
Lithium is ground into the graininess of 200-400 mesh；
(4) mixed material heating obtained in step (2) is warming up to molten condition, then added by heating melting coating layer material
Enter antioxidant, graphite fibre and the polypropylene obtained in step (3) to be heated to molten condition and stir, obtains melting charge；
(5) clad is processed, and selection intensity is 2000-2400MPa, and elasticity modulus is the carbon fiber conduct of 200-250Gp
Core material, the melting charge obtained in step (4) is coated on to the outside of carbon fiber by extrusion cladding machine becomes clad, clad
Longitudinal section both sides be symmetrical sinusoidal waveform；
(6) stratum granulosum is processed, and the surface that the lithium obtained in step (3) is uniformly sprinkling upon to clad obtains stratum granulosum, obtains
Conductive carbon fibre.
The advantageous effect of this base case is：
1, the conductive carbon fibre prepared by this method, core material use carbon fiber, carbon fiber to have many excellent performances, carbon fiber
The intensity and elasticity modulus of dimension are high, and, superhigh temperature resistant higher than performance, fatigue durability is good, good electric conductivity, and no creep is having
Insoluble and in-expandable in solvent, acid, alkali, corrosion resistance protrude.It uses carbon fiber as core material, makes the grid of establishment that there is high intensity and height
Strong bearing capacity makes that pole plate is made also with good structural strength and dimensional stability using the grid.
2, the conductive carbon fibre prepared by this method, kirsite cladding material comprising aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium,
Tin, bismuth and zinc, aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium, tin, bismuth possess the hydrogen overvoltage for being only second to lead, can effectively inhibit electricity
During the use of pond, zinc generates hydrogen with electrolyte effect, and battery is made to be hardly damaged, and makes to be free of lead in this conductive carbon fibre,
The formation for having prevented brown lead oxide is avoided because the brown lead oxide volume of formation increases damage grid, to make the service life of battery
It is effectively increased.In this conductive carbon fibre, increase antioxidant, avoid during the use of battery, active material with originally lead
Oxidation reaction just raw oxidized metal occurs for electric carbon fiber, influences the use in the battery of this conductive carbon fibre.
3, the conductive carbon fibre prepared by this method, clad include kirsite cladding material, antioxidant, polypropylene and stone
Black fiber, kirsite cladding material are included in outside core material, this conductive carbon fibre can be made to have good conductive property.Graphite fibre is resistance to
It is hot, corrosion-resistant, coefficient of thermal expansion is small, and electric conductivity is excellent, and graphite fibre and the common cooperation of kirsite cladding material are further protected
It has demonstrate,proved conductive carbon fibre to have good conductive property, it is ensured that made grid can normally play afflux, confluence and defeated stream
Effect.Polypropylene mobility, caking property are good, and when preparing conductive carbon fibre, polypropylene can enhance kirsite cladding material, antioxygen
The viscosity of agent and graphite fibre enables kirsite cladding material, antioxidant and graphite fibre preferably to condense together, has
Help the formation of clad, while also clad being enable preferably to be fixed on core surfaces；And since polypropylene is with good
Good mobility is conducive to squeeze out conductive carbon fibre.
5, the conductive carbon fibre clad prepared by this method is added to antioxidant, effectively inhibits this conductive carbon fibre
Oxidation reaction occurs during battery use, influences the performance of battery.
6, the conductive carbon fibre prepared by this method is free of lead in kirsite cladding material, during having prevented battery use
Influence of the brown lead oxide of generation to battery, greatly reduces heavy metal pollution, makes cell safety, environmental protection.
7, during the use of conductive carbon fibre, active material needs grid made of being coated in conductive carbon fibre braiding
On, and during the use of battery, active material will chemically react, and active material is easy from grid during this
It falls off.This method makes the more coarse of cover surface by processing stratum granulosum in cover surface so that active material and packet
Frictional force between coating increases, to make active material be not easy to fall off from cover surface；And stratum granulosum can make active material
Increase with the contact area of clad, to make electric conductivity more preferably.Lithium compressibility is small, fusing point is high, electrically conductive, is suitable as thus
On the one hand the stratum granulosum at place will not be dissolved in clad in clad process, on the other hand can play collection with clad one
The effect of stream, confluence and defeated stream.
8, the clad of this method processing, longitudinal section both sides are symmetrical sinusoidal waveform, and conductive carbon fibre was using
It needs to be cross-woven in journey and grid is made, it, can be at the trough of sine wave by two conductive carbons when conductive carbon fibre is cross-woven
Fiber overlaps, and the wave crest of sine wave then makes two conductive carbon fibres overlappings everywhere between two conductive carbon fibres overlap
Place is between the trough of two sine waves of conductive carbon fibre, so that not having high spot on manufactured grid.Nothing on grid
Protrusion is not in point discharge effect, grid is made to make the afflux of electric current, confluence and defeated stream then during grid use
With preferable, performance is preferable.
Compared with prior art, the conductive carbon fibre that prepared by this method is free of lead, and zinc can be inhibited to use process in battery
In in active material react generate hydrogen, ensure that the security performance of battery, extend the service life of battery.
Preferred embodiment one：As the preferred of basic scheme, further include the processing of step (7) pine tar, pine tar is heated to melting,
The pine tar that a melting layer is wrapped up at clad diameter minimum is cooled to pine tar solidification, obtains conductive carbon fibre.Conductive carbon fibre
When intersection is compiled into grid, pine tar has been wrapped up in the position to become smaller positioned at clad right angle, and under the action of establishment, pine tar will
It is extruded on entire grid, to make grid surface cover one layer of pine tar, grid and active material are completely cut off, kept away by pine tar
Exempt from during battery use, chemical reaction, which occurs, for the two influences the use of grid.
Preferred embodiment two：As the preferred of basic scheme, which is characterized in that in step (1), the clad includes following
The material of mass fraction：88 parts of kirsite cladding material, 3 parts of antioxidant, 5 parts of polypropylene, 1 part of graphite fibres.By inventor
Test of many times find, by kirsite coat material, antioxidant, polypropylene, graphite fibre state modulator within the above range,
The conductive carbon fibre electric conductivity of preparation is good, good combination property.
Preferred embodiment three：As the preferred of basic scheme, in step (1), the kirsite cladding material includes following quality
The raw material of number：0.2 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.8 part of bismuth, 96 parts of zinc.By the more of inventor
Secondary experiment finds that the raw material control of kirsite cladding material effectively can inhibit zinc to react with electrolyte within above range
Hydrogen is generated, also makes kirsite cladding material that there is preferable electric conductivity.
Preferred embodiment four：As the preferred of basic scheme, in step (5), when processing clad, diameter at clad minimum
For 0.2mm, a diameter of 0.4mm of clad maximum.On the one hand make slab lattice thickness made of conductive carbon fibre obtained small,
The weight that grid accounts for electrode plate is reduced, active material is substantially increased and plays the mass ratio of carrying electric action battery grid；
On the other hand the protrusion on grid has been prevented completely, grid is further made to act on more preferably the afflux of electric current, confluence and defeated stream.
Description of the drawings
Fig. 1 is the longitudinal section sectional view of conductive carbon fibre in the present invention；
Fig. 2 is the cladding head schematic cross-section of continued extrusion machine；
Fig. 3 is the side view of elastic extruding plate.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail：
Reference numeral in Figure of description includes：Conductive carbon fibre 10, carbon fiber 11, clad 12, stratum granulosum 13, pine
Oil 14, head body 20, installation passage 21, single screw rod 22, first bevel gear 23, runner 24, stent 30, turning set, second
Bevel gear 41, helical blade 42, first gear 43, extrusion die 50, bull stick 51, second gear 511, the first cam 512, second are convex
Wheel 513, extruded hole 521, the first spring 53, spills material chamber 54, sliding block 541, second spring 542, cooling duct at elastic extruding plate 52
55。
Embodiment 1
The preparation method of conductive carbon fibre 10, includes the following steps：
(1) prepare 12 material of clad, clad 12 includes the material of following mass fraction：91 parts of kirsite cladding material,
4 parts of antioxidant, 5 parts of polypropylene, 1.5 parts of graphite fibre, 0.5-1 parts of lithium；The kirsite cladding material includes following mass parts
Several raw materials：0.5 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 2 parts of bismuth, 98 parts of zinc；
(2) processing kirsite cladding material carries out being mixed to get mixture, by mixture in indifferent gas to kirsite cladding material
Processing is dried in body, the water content of mixture is made to be less than 5%；Mixture is ground to 400- by then ground and mixed material
The powdery of 600 mesh；
(3) 12 material of clad is handled, antioxidant, graphite fibre and polypropylene are ground into the powdery of 500-800 mesh,
Lithium is ground into the graininess of 400 mesh；
(4) mixed material heating obtained in step (2) is warming up to molten condition by heating melting 12 material of clad, then
Antioxidant, graphite fibre and the polypropylene obtained in step (3) is added to be heated to molten condition and stir, obtains melting charge；
(5) clad 12 is processed, and selection intensity is 2400MPa, and the carbon fiber 11 that elasticity modulus is 250Gp is used as core material,
The melting charge obtained in step (4) is coated on to the outside of carbon fiber 11 by extrusion cladding machine becomes clad 12, clad
12 longitudinal section both sides are symmetrical sinusoidal waveform；And a diameter of 0.2mm at 12 minimum of clad, 12 maximum of the clad
A diameter of 0.4mm；
(6) stratum granulosum 13 is processed, and the surface that the lithium obtained in step (3) is uniformly sprinkling upon to clad 12 obtains stratum granulosum
13, obtain conductive carbon fibre 10；
(7) pine tar 14 is processed, and pine tar 14 is heated to melting, and the pine of a melting layer is wrapped up at 12 diameter minimum of clad
Oil 14 is cooled to the solidification of pine tar 14, obtains conductive carbon fibre 10 as shown in Figure 1.
It is found when preparing conductive carbon fibre 10 using existing extrusion cladding machine, melting charge after screw extrusion by that will wrap
It is layed onto the outer surface of carbon fiber 11, but since in this conductive carbon fibre 10, the longitudinal section both sides of clad 12 are symmetrical sinusoidal
Waveform, a diameter of 0.2mm, a diameter of 0.4mm of 12 maximum of clad at the minimum of clad 12；The cladding of existing extrusion cladding machine
Head cannot be realized preferably makes symmetrical sinusoidal waveform by the longitudinal section both sides of clad 12.For this purpose, in this preparation method
In implementation process, the cladding head of research and development is applied in existing extrusion cladding machine by the required cladding head of especial manufacture,
The structure of this conductive carbon fibre 10 can be produced.
As shown in Fig. 2, used cladding head includes head body 20 and shaping mould when the preparation of this conductive carbon fibre 10
Tool, handpiece body are interior equipped with installation passage 21, runner 24 and the single screw rod 22 squeezed into runner 24 for that will melt cladding material, installation
Channel 21 is distributed along short transverse, and single screw rod 22 is distributed along short transverse and is rotatably connected in runner 24；Runner 24 is along level
Directional spreding, runner 24 circulate with installation passage 21.The lower end of single screw rod 22 is fixedly connected with first bevel gear 23, single screw rod 22
One end be equipped with driving its rotation motor.Shaping dies is mounted in runner 24, and shaping dies includes stent 30, rotation
Set 40 and the extrusion die 50 for squeezing out conductive carbon fibre 10, turning set 40 are fixedly connected with second bevel gear 41, first bevel gear outside
23 and second bevel gear 41 engage, turning set 40 is when single screw rod 22 rotates, in first bevel gear 23 and second bevel gear 41
It can be rotated therewith under effect.Turning set 40 is nested with outside stent 30, and stent 30 is used for across carbon fiber 11, turning set 40
Outside is equipped with the helical-blade of transmission melting cladding material.
Pressing mold is mounted in head body 20, and pressing mold includes bull stick 51, second gear 511 and elastic extruding plate 52, rotation
It has been nested with first gear 43 on set 40, the second gear 511 engaged with first gear 43 is fixed on bull stick 51.As shown in figure 3,
Elastic extruding plate 52 surrounds side and surrounds a circular extruded hole 521, and extruded hole 521 is directed at the outlet of runner 24, for squeezing
Pressure melting cladding material is coated on carbon fiber 11.Extrusion die 50 is equipped with the first bullet with 52 side elastic connection of elastic extruding plate
Spring 53, bull stick 51 is equipped with the first cam 512 for pushing against 52 side of elastic extruding plate, under the action of the first cam 512, squeezes
Becoming larger for 521 intermittent of hole becomes smaller.One end far from elasticity extruding plate 52 on extrusion die 50, which is equipped with, spills material chamber 54, spills under material chamber 54
End is slidably connected there are one sliding block 541, spills material chamber 54 and is internally provided with the second spring 542 being connect with 541 upper end of sliding block, bull stick 51
On be fixed with the second cam 513 pushed against with 541 lower end of sliding block, lithium particle is put into spill material chamber 54 in, in the second cam 513
It, can will be on lithium spraying particles to conductive carbon fibre 10 under effect.Extrusion die 50, which is located to spill, expects that the both sides of chamber 54 are equipped with cooling lead to
Road 55 carries out the conductive carbon fibre 10 being covered to complete in use, cooling water can be passed through in cooling water channel in extrusion cladding machine
It is cooling.
In step (5), using the extrusion cladding machine for being mounted with above-mentioned cladding head, carbon fiber 11 is passed through into driving channel,
And stent 30 is passed through, melting cladding material is poured into installation passage 21.Starting motor at this time makes single screw rod 22 rotate, and will install
In melting cladding material in channel 21 is squeezed into and flowed to, since turning set 40 is in the effect of first bevel gear 23 and second bevel gear 41
Under rotated with single screw rod 22, the outside of turning set 40 is equipped with helical-blade；Melting cladding material in runner 24 is under the action of helical-blade
It is pushed to extrusion die 50, is covered by outside carbon fiber 11 through the extruding of extruded hole 521.
Under the action of first gear 43 and second gear 511, bull stick 51 will be with the rotation of turning set 40, due to elasticity
Extruding plate 52 surrounds side and surrounds a circular extruded hole 521, and extrusion die 50 is equipped with and 52 side of elastic extruding plate elasticity
First spring 53 of connection, bull stick 51 are equipped with the first cam 512 for pushing against 52 side of elastic extruding plate；In the rotation of bull stick 51
In the process, the first cam 512 rotate therewith and to one end of elastic extruding plate 52 act on, make 521 interval of extruded hole become larger and
Become smaller, the longitudinal section both sides of the clad 12 to make are symmetrical sinusoidal waveform.Due to being squeezed far from elasticity on extrusion die 50
One end of piece 52, which is equipped with to spill, expects chamber 54, spills 54 lower end of material chamber and is slidably connected there are one sliding block 541, spills material chamber 54 and is internally provided with and slides
The second spring 542 of 541 upper end of block connection, is fixed with the second cam 513 pushed against with 541 lower end of sliding block on bull stick 51；By lithium
Particle, which is put into, to be spilt in material chamber 54, can be by lithium spraying particles to conductive carbon fibres when bull stick 51 rotates under the action of the second cam 513
In dimension 10, processing of the step (6) to stratum granulosum 13 is completed.
Using above-mentioned cladding head, turning set 40 and bull stick 51 are to rotate therewith while 22 feeding of single screw rod, are turned
Helical-blade on dynamic set 40 will transmit melting cladding material, the first cam 512 and the second cam 513 on bull stick 51 respectively with bullet
Property extruding plate 52 and sliding block 541 coordinate, be longitudinal section both sides be symmetrical sinusoidal waveform by the extruding of clad 12, and by stratum granulosum
13 intervals are uniformly arranged on outside clad 12.Cooling duct 55 is two and is located at the both sides for spilling material chamber 54, can exist convenient for particle lithium
Cladding expects that also incomplete cooled and solidified is to contact, and is embedded outside clad 12 convenient for particle lithium.
Embodiment 2
The present embodiment and embodiment 1 difference lies in：Clad 12 includes the material of following mass fraction in step (1)：
90 parts of kirsite cladding material, 3.5 parts of antioxidant, 4.5 parts of polypropylene, 1 part of graphite fibres；Kirsite cladding material includes following matter
Measure the raw material of number：0.4 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 1.5 parts of bismuth, 97 parts of zinc.It will in step (3)
Lithium is ground into the graininess of 350 mesh.It is 2300MPa that intensity is selected in step (5), and elasticity modulus is the carbon fiber 11 of 240Gpa.
Embodiment 3
The present embodiment and embodiment 1 difference lies in：Clad 12 includes the material of following mass fraction in step (1)：
88 parts of kirsite cladding material, 3 parts of antioxidant, 5 parts of polypropylene, 1 part of graphite fibres；Kirsite cladding material includes following mass parts
Several raw materials：0.2 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.8 part of bismuth, 96 parts of zinc.Step grinds lithium in (3)
Wear into the graininess of 300 mesh.It is 2200MPa that intensity is selected in step (5), and elasticity modulus is the carbon fiber 11 of 230Gpa.
Embodiment 4
The present embodiment and embodiment 1 difference lies in：Clad 12 includes the material of following mass fraction in step (1)：
89 parts of kirsite cladding material, 2.5 parts of antioxidant, 3.5 parts of polypropylene, 0.9 part of graphite fibres；Kirsite cladding material includes following
The raw material of mass fraction：0.3 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 1 part of bismuth, 96 parts of zinc.It will in step (3)
Lithium is ground into the graininess of 250 mesh.It is 2100MPa that intensity is selected in step (5), and elasticity modulus is the carbon fiber 11 of 220Gpa.
Embodiment 5
The present embodiment and embodiment 1 difference lies in：Clad 12 includes the material of following mass fraction in step (1)：
87 parts of kirsite cladding material, 2 parts of antioxidant, 3 parts of polypropylene, 0.5 part of graphite fibres；Kirsite cladding material includes following quality
The raw material of number：0.1 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.5 part of bismuth, 95 parts of zinc.By lithium in step (3)
It is ground into the graininess of 200 mesh.It is 2000MPa that intensity is selected in step (5), and elasticity modulus is the carbon fiber 11 of 200Gpa.
Comparative example 1
This comparative example and embodiment 1 difference lies in：Clad 12 is free of polypropylene.
Comparative example 2
This comparative example and embodiment 1 difference lies in：Clad 12 is free of graphite fibre.
Comparative example 3
This comparative example and embodiment 1 difference lies in：Clad 12 is free of antioxidant.
Comparative example 4
This comparative example and embodiment 1 difference lies in：Kirsite cladding material in, using lead replace aluminium, indium, gallium, thallium, magnesium,
Calcium, strontium, cadmium, tin, bismuth.
Comparative example 5
This comparative example and embodiment 1 difference lies in：12 consistency of thickness of clad.
Comparative example 6
This comparative example and embodiment 1 difference lies in：Without stratum granulosum 13 and pine tar 14.
Comparative example 7：
Comparative example 7 is the conductive carbon fibre 10 for preparing grid in existing accumulator.
It is respectively adopted and grid is made using the conductive carbon fibre in embodiment 1-5 and comparative example 1-7, and grid is used respectively
In accumulator of the same race, the service condition of accumulator is detected, obtains table 1.
By the data of observation table 1 it is found that grid is made in the conductive carbon fibre prepared using the present invention, and is used in accumulator
The inside, conductive and storage electricity better performances, and the service life of accumulator greatly increases, the recycling of accumulator is disposable
Less pollution.Simultaneously during battery prolonged use, less generation gas, the volume increasing of grid after prolonged use
Add smaller, i.e., grid is smaller by oxidization condition.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and patent practicability.
Claims (5)
1. the preparation method of conductive carbon fibre, which is characterized in that include the following steps：
(1) prepare coating layer material, clad includes the material of following mass fraction：Kirsite cladding material 87-91 parts, it is anti-oxidant
2-4 parts of agent, 3-5 parts of polypropylene, 0.5-1.5 parts of graphite fibre, 0.5-1 parts of lithium；The kirsite cladding material includes following quality
The raw material of number：0.1-0.5 parts of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.5-2 parts of bismuth, 95-98 parts of zinc；
(2) processing kirsite cladding material carries out being mixed to get mixture, by mixture in inert gas to kirsite cladding material
Processing is dried, the water content of mixture is made to be less than 5%；Mixture is ground to 400-600 mesh by then ground and mixed material
Powdery；
(3) coating layer material is handled, antioxidant, graphite fibre and polypropylene are ground into the powdery of 500-800 mesh, lithium is ground
Wear into the graininess of 200-400 mesh；
(4) mixed material heating obtained in step (2) is warming up to molten condition, adds step by heating melting coating layer material
Suddenly antioxidant, graphite fibre and the polypropylene obtained in (3) is heated to molten condition and stirs, and obtains melting charge；
(5) clad is processed, and selections intensity is 2000-2400MPa, elasticity modulus for 200-250Gp carbon fiber as core material,
The melting charge obtained in step (4) is coated on to the outside of carbon fiber by extrusion cladding machine becomes clad, and clad is indulged
Section both sides are symmetrical sinusoidal waveform；
(6) stratum granulosum is processed, and the surface that the lithium obtained in step (3) is uniformly sprinkling upon to clad obtains stratum granulosum, is obtained conductive
Carbon fiber.
2. the preparation method of conductive carbon fibre as described in claim 1, which is characterized in that further include the processing of step (7) pine tar,
Pine tar is heated to melting, the pine tar of a melting layer is wrapped up at clad diameter minimum, is cooled to pine tar solidification, is obtained conductive
Carbon fiber.
3. the preparation method of conductive carbon fibre as described in claim 1, which is characterized in that in step (1), the clad packet
Include the material of following mass fraction：88 parts of kirsite cladding material, 3 parts of antioxidant, 5 parts of polypropylene, 1 part of graphite fibres.
4. the preparation method of conductive carbon fibre as described in claim 1, which is characterized in that in step (1), the kirsite packet
Cover the raw material that material includes following mass fraction：0.2 part of aluminium, indium, gallium, thallium, magnesium, calcium, strontium, cadmium and tin total, 0.8 part of bismuth, zinc 96
Part.
5. the preparation method of conductive carbon fibre as described in claim 1, which is characterized in that in step (5), process clad
When, a diameter of 0.2mm, a diameter of 0.4mm of clad maximum at clad minimum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458138.6A CN108281663A (en) | 2017-12-28 | 2017-12-28 | The preparation method of conductive carbon fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458138.6A CN108281663A (en) | 2017-12-28 | 2017-12-28 | The preparation method of conductive carbon fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108281663A true CN108281663A (en) | 2018-07-13 |
Family
ID=62802576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711458138.6A Withdrawn CN108281663A (en) | 2017-12-28 | 2017-12-28 | The preparation method of conductive carbon fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108281663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908436A (en) * | 2022-07-04 | 2022-08-16 | 江苏振宁半导体研究院有限公司 | Stretchable thermoplastic conductive fiber |
-
2017
- 2017-12-28 CN CN201711458138.6A patent/CN108281663A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908436A (en) * | 2022-07-04 | 2022-08-16 | 江苏振宁半导体研究院有限公司 | Stretchable thermoplastic conductive fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Employing Ni-embedded porous graphitic carbon fibers for high-efficiency lithium–sulfur batteries | |
| Wang et al. | Low-cost and high-performance hard carbon anode materials for sodium-ion batteries | |
| CN103187551B (en) | Lithium ion liquid flow battery | |
| CN101221853A (en) | Semi-solid state or full-solid state water system super capacitor | |
| CN103560233A (en) | Carbon coated silicon graphite cathode material of lithium ion battery and preparation method thereof | |
| CN105958033B (en) | A kind of preparation method and application of non-graphitized carbon nanotube/sulphur composite material | |
| CN109037626A (en) | A kind of alkali metal base cathode and its preparation method and application | |
| CN103137955A (en) | Lead/carbon composite for storage battery and preparation method of lead/carbon composite material | |
| CN101814605A (en) | Preparation method of fluororesin-containing conductive plastic bi-polar plate | |
| CN102544462A (en) | Anode material of lithium-ion battery | |
| JP2014212111A (en) | Sea water battery | |
| CN102637922B (en) | Preparation method of lithium air battery | |
| CN106848379B (en) | Electrode of lithium secondary cell containing hygroscopic matter and the lithium secondary battery comprising it | |
| CN108336359A (en) | Conductive carbon fibre | |
| CN102779981B (en) | Preparation method of negative electrode plate of nickel-metal hydride battery | |
| CN108281663A (en) | The preparation method of conductive carbon fibre | |
| Ren et al. | Rational design of nanoarray structures for lithium–sulfur batteries: recent advances and future prospects | |
| CN201773894U (en) | Special nickel hydroxide positive plate for SC type nickel-metal hydride batteries | |
| CN109037627A (en) | A kind of alkali metal base composite negative pole and its application | |
| CN105702943A (en) | Lithium-compensating method for negative electrode material of lithium ion battery | |
| CN107565146B (en) | Bipolar plate for flow battery and preparation and application thereof | |
| KR20130075339A (en) | Carbon-metal compound anode material and manufacturing method of the same | |
| CN102403537A (en) | Method for manufacturing lithium iron phosphate battery | |
| CN100369303C (en) | A modified lithium-ion battery cathode material, cathode and battery | |
| CN108129747B (en) | Bipolar plate for flow battery and preparation and application thereof |
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: 20180713 |
|
| WW01 | Invention patent application withdrawn after publication |