CN109585778A - A method of preparing thermal cell combination pole piece - Google Patents
A method of preparing thermal cell combination pole piece Download PDFInfo
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- CN109585778A CN109585778A CN201811221370.2A CN201811221370A CN109585778A CN 109585778 A CN109585778 A CN 109585778A CN 201811221370 A CN201811221370 A CN 201811221370A CN 109585778 A CN109585778 A CN 109585778A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
- H01M6/36—Deferred-action cells containing electrolyte and made operational by physical means, e.g. thermal cells
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Abstract
The invention discloses a kind of methods for preparing thermal cell combination pole piece, comprising steps of step 1: preparation is compounded with the positive composite mortar of positive electrode powder of thermal batteries body material and molten salt electrolyte, positive composite mortar is coated on plus plate current-collecting body, positive plate is solidified into；Step 2: preparation is compounded with the cathode composite mortar of thermal cell cathode powder body material and molten salt electrolyte, and cathode composite mortar is coated on negative current collector, negative electrode tab is solidified into；Step 3: preparing molten salt electrolyte slurry, and molten salt electrolyte slurry is coated in negative electrode tab, composite sheet is solidified into；Step 4: thermal cell anode composite pole piece is stacked in composite sheet, is pressed together, pole piece semi-finished product must be combined；Step 5: preparation heating slurry material will heat slurry material and be respectively coated on the plus plate current-collecting body of combination pole piece semi-finished product two sides and on negative current collector, and be solidified into combination pole piece finished product；The present invention improves the multiplying power property of battery by positive/negative composite mortar.
Description
Technical field
The invention belongs to thermal cell technical fields, are specifically related to a kind of method for preparing thermal cell combination pole piece.
Background technique
Thermal cell is to make electrolyte with fused salt, and a reserve cell of its fusing and activation is made using heat source, is had very
It is excellent that high specific energy and specific power, period of storage are long, activation is reliable rapidly, use environment temperature is wide and does not need maintenance etc.
Point；Currently, the electrode slice of domestic thermal cell is all made of the preparation of pressed powder technique, i.e., the uniform cloth of electrode powder body material is sprinkled upon and is led
On electric substrate, then pressing formation；Since powder self-supporting is poor, thermal cell is caused to be difficult to be made into combination pole piece, the group of major diameter
Closing pole piece can not form.
Summary of the invention
In view of this, passing through slurry the purpose of the present invention is to provide a kind of method for preparing thermal cell combination pole piece
Coating processes replace traditional pressed powder technique, realize the preparation of combination pole piece.
In order to achieve the above object, a kind of method for preparing thermal cell combination pole piece of the present invention, comprising the following steps:
Step 1: positive electrode powder of thermal batteries body material, first binder, the first dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, positive composite mortar is obtained, positive composite mortar is coated on plus plate current-collecting body, after dry solidification, carries out compression process,
Form positive plate；Step 2: thermal cell cathode powder body material, the second binder, the second dispersing agent and molten salt electrolyte are mixed
And stir evenly, cathode composite mortar is obtained, cathode composite mortar is coated on negative current collector, after dry solidification, is carried out
Compression process forms negative electrode tab；Step 3: by molten salt electrolyte, the second binder and the second dispersant and stirring evenly,
Molten salt electrolyte slurry is obtained, molten salt electrolyte slurry is coated in negative electrode tab, after dry solidification, formation is compounded with molten-salt electrolysis
The composite sheet of matter layer；Step 4: thermal cell anode composite pole piece is stacked in composite sheet, and molten salt electrolyte layer is made to be in anode
It between piece and negative electrode tab, is pressed together, pole piece semi-finished product must be combined；Step 5: by heating powder of thermal batteries material, the second binder
With the second dispersant and stir evenly, slurry material must be heated, heating slurry material is respectively coated in combination pole piece semi-finished product
On the plus plate current-collecting body of two sides and on negative current collector, after dry solidification, compression process is carried out, forms combination pole piece finished product.
Further, the positive composite mortar be coated on plus plate current-collecting body with a thickness of 100~1000 μm, anode collection
Body with a thickness of 10~50 μm.
Further, the cathode composite mortar be coated on negative current collector with a thickness of 100~1000 μm, negative pole currect collecting
Body with a thickness of 10~50 μm.
Further, the heating slurry material is coated on, with a thickness of 10~200 μm, heating slurry material applies on negative current collector
Be overlying on negative current collector with a thickness of 10~200 μm.
Further, the positive electrode powder of thermal batteries body material is FeS2, and thermal cell cathode powder body material is Li-Si alloy, fused salt
Electrolyte is the mixture of KCl and LiCl, wherein the mass percent that the mass percent of KCl is 30~60%, LiCl is 40
~70%, first binder is epoxy resin, and the first dispersing agent is deionized water, and the second binder is ptfe emulsion, the
Two dispersing agents are alkane organic solvent of ketone, and the general formula of alkane organic solvent of ketone is CmHnNtOs, wherein m=4~10, n=7~
12, t=1~3, s=1~5, heating powder of thermal batteries material are the mixture of Fe powder and KClO 4；Wherein, the mass percent of Fe powder
Mass percent for 5~20%, KClO 4 is 80~95%；In the step 1, each component of positive composite mortar presses quality
Percentage are as follows: positive electrode powder of thermal batteries body material 30~60%, molten salt electrolyte 10~20%, first binder 2~10%, remaining is
First dispersing agent；In the step 2, each component of cathode composite mortar is by mass percentage are as follows: thermal cell cathode powder body material
30~60%, molten salt electrolyte 10~20%, the second binder 2~10%, remaining is the second dispersing agent；In the step 3, fused salt
The each component of electrolyte slurry is by mass percentage are as follows: molten salt electrolyte 30~60%, the second binder 2~10%, remaining is
Two dispersing agents；In the step 5, heat slurry material each component by mass percentage are as follows: by heating powder of thermal batteries material 30~
60%, the second binder 2~10%, remaining is the second dispersing agent.
Further, for step 1 into step 5, the temperature of dry solidification is 100 DEG C, and the time of dry solidification is 30min,
The intensity of compacting is 2~10Mpa, and time of compacting is 1~4min, and the intensity of pressing is 5~12Mpa, the time of pressing is 1~
4min。
Further, plus plate current-collecting body and negative current collector are graphite paper.
The beneficial effects of the present invention are:
1. a kind of method for preparing thermal cell combination pole piece of the present invention replaces traditional pressed powder by slurry coating processes
Technique realizes the preparation of combination pole piece；Also, positive electrode powder of thermal batteries body material and fused salt electricity are compounded in positive composite mortar
Xie Zhi increases the contact area of positive electrode powder of thermal batteries body material and molten salt electrolyte；Similarly, it is compounded in cathode composite mortar
Thermal cell cathode powder body material and molten salt electrolyte increase the contact surface of thermal cell cathode powder body material and molten salt electrolyte
Product, to improve the multiplying power property of lithium ion battery；On this basis, since heating slurry material is respectively coated in combination pole piece
On the plus plate current-collecting body of semi-finished product two sides and on negative current collector, hence it is evident that improve the rate of activation of battery: on the one hand, heating powder
The shortest distance of slurry and molten salt electrolyte can shorten as far as possible, i.e., most short between heating slurry material and molten salt electrolyte
Distance can be equal to the thickness of plus plate current-collecting body or the thickness of negative current collector, so that rate of activation is faster；On the other hand, it is located at
The heating slurry material of pole piece semi-finished product two sides is combined as heat source while when causing, activationary time is than the activation that single heat source causes
Time is shorter.
2. a kind of method for preparing thermal cell combination pole piece of the present invention is conducive to improve battery energy storage density and stored energy capacitance；With
For positive plate, since plus plate current-collecting body only plays electronics conduction, energy can not be stored, it is appropriate to increase positive composite pulp
Material is coated on the thickness on plus plate current-collecting body, while reducing the thickness of plus plate current-collecting body, be conducive to improve battery energy storage density and
Stored energy capacitance.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment one:
A kind of method for preparing thermal cell combination pole piece of the present invention, comprising the following steps:
Step 1: positive electrode powder of thermal batteries body material, first binder, the first dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, positive composite mortar is obtained, positive composite mortar is coated on plus plate current-collecting body, after dry solidification, carries out compression process,
Form positive plate.Here, positive electrode powder of thermal batteries body material is FeS2；First binder is epoxy resin；First dispersing agent is to go
Ionized water；Molten salt electrolyte is the mixture of KCl and LiCl, wherein the mass percent of KCl is the quality percentage of 30%, LiCl
Than being 70%；The each component of positive composite mortar is by mass percentage are as follows: positive electrode powder of thermal batteries body material 30%, molten salt electrolyte
10%, first binder 5%, remaining is the first dispersing agent；Plus plate current-collecting body uses graphite paper, and positive composite mortar is coated on anode
On collector with a thickness of 100 μm, plus plate current-collecting body with a thickness of 10 μm；It can be dried at solidification in a vacuum drying oven
Reason, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting is 2Mpa, and the time of compacting is
4min。
Step 2: thermal cell cathode powder body material, the second binder, the second dispersing agent and molten salt electrolyte are mixed and is stirred
It mixes uniformly, obtains cathode composite mortar, cathode composite mortar is coated on negative current collector, after dry solidification, is suppressed
Processing forms negative electrode tab.Here, thermal cell cathode powder body material is Li-Si alloy, and molten salt electrolyte is the mixing of KCl and LiCl
Object, wherein the mass percent that the mass percent of KCl is 30%, LiCl is 70%, and the second binder is polytetrafluoroethylene (PTFE) cream
Liquid, the second dispersing agent are alkane organic solvent of ketone, and alkane organic solvent of ketone is specially C4H7NO；Cathode composite mortar is coated on negative
On the collector of pole with a thickness of 100 μm, negative current collector with a thickness of 10 μm；It can be dried at solidification in a vacuum drying oven
Reason, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting is 2Mpa, and the time of compacting is
4min。
Step 3: it by molten salt electrolyte, the second binder and the second dispersant and stirs evenly, obtains molten salt electrolyte
Molten salt electrolyte slurry is coated in negative electrode tab by slurry, and after dry solidification, formation is compounded with the compound of molten salt electrolyte layer
Piece.Here, the KCl and mixed by the LiCl that mass percent is 70% that molten salt electrolyte is 30% by mass percent, the
Two binders are ptfe emulsion, and the second dispersing agent is alkane organic solvent of ketone, and alkane organic solvent of ketone is specially
C4H7NO；The each component of molten salt electrolyte slurry is by mass percentage are as follows: molten salt electrolyte 30%, the second binder 5%, remaining is
Second dispersing agent.Curing process can be dried in a vacuum drying oven, the temperature of dry solidification is 100 DEG C, dry solidification
Time is 30min.
Step 4: thermal cell anode composite pole piece is stacked in composite sheet, make molten salt electrolyte layer be in positive plate with
It between negative electrode tab, is pressed together, pole piece semi-finished product must be combined.Here, the intensity of pressing is 5Mpa, and the time of pressing is 4min.
Step 5: it by heating powder of thermal batteries material, the second binder and the second dispersant and stirs evenly, must heat
Slurry material, will heat slurry material be respectively coated in combination pole piece semi-finished product two sides plus plate current-collecting body on and negative current collector on,
After dry solidification, compression process is carried out, forms combination pole piece finished product.Heating powder of thermal batteries material is the mixed of Fe powder and KClO 4
Close object；Wherein, the mass percent that the mass percent of Fe powder is 10%, KClO 4 is 90%, and the second binder is polytetrafluoroethyl-ne
Alkene lotion, the second dispersing agent are alkane organic solvent of ketone, C4H7NO.Heat each component of slurry material by mass percentage are as follows: will be hot
Battery heats powder material 30%, the second binder 5%, remaining is the second dispersing agent.Slurry material is heated to be coated on negative current collector
With a thickness of 10 μm, heating slurry material be coated on negative current collector on a thickness of 10 μm.It can be done in a vacuum drying oven
Dry curing process, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min.The intensity of compacting is 2Mpa, compacting
Time be 4min.
Embodiment two:
A kind of method for preparing thermal cell combination pole piece of the present invention, comprising the following steps:
Step 1: positive electrode powder of thermal batteries body material, first binder, the first dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, positive composite mortar is obtained, positive composite mortar is coated on plus plate current-collecting body, after dry solidification, carries out compression process,
Form positive plate.Here, positive electrode powder of thermal batteries body material is FeS2；First binder is epoxy resin；First dispersing agent is to go
Ionized water；Molten salt electrolyte is the mixture of KCl and LiCl, wherein the mass percent of KCl is the quality percentage of 60%, LiCl
Than being 40%；The each component of positive composite mortar is by mass percentage are as follows: positive electrode powder of thermal batteries body material 60%, molten salt electrolyte
20%, first binder 2%, remaining is the first dispersing agent；Plus plate current-collecting body uses graphite paper, and positive composite mortar is coated on anode
On collector with a thickness of 500 μm, plus plate current-collecting body with a thickness of 30 μm；It can be dried at solidification in a vacuum drying oven
Reason, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting is 6Mpa, and the time of compacting is
2min。
Step 2: thermal cell cathode powder body material, the second binder, the second dispersing agent and molten salt electrolyte are mixed and is stirred
It mixes uniformly, obtains cathode composite mortar, cathode composite mortar is coated on negative current collector, after dry solidification, is suppressed
Processing forms negative electrode tab.Here, thermal cell cathode powder body material is Li-Si alloy, and molten salt electrolyte is the mixing of KCl and LiCl
Object, wherein the mass percent that the mass percent of KCl is 60%, LiCl is 40%, and the second binder is polytetrafluoroethylene (PTFE) cream
Liquid, the second dispersing agent are alkane organic solvent of ketone, and the general formula of alkane organic solvent of ketone is C5H9N3O5；The coating of cathode composite mortar
In on negative current collector with a thickness of 500 μm, negative current collector with a thickness of 30 μm；It can be dried in a vacuum drying oven solid
Change processing, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting be 6Mpa, compacting when
Between be 2min.
Step 3: it by molten salt electrolyte, the second binder and the second dispersant and stirs evenly, obtains molten salt electrolyte
Molten salt electrolyte slurry is coated in negative electrode tab by slurry, and after dry solidification, formation is compounded with the compound of molten salt electrolyte layer
Piece.Here, the KCl and mixed by the LiCl that mass percent is 40% that molten salt electrolyte is 60% by mass percent, the
Two binders are ptfe emulsion, and the second dispersing agent is alkane organic solvent of ketone, and alkane organic solvent of ketone is specially
C5H9N3O5；The each component of molten salt electrolyte slurry is by mass percentage are as follows: molten salt electrolyte 50%, the second binder 2%, remaining
For the second dispersing agent.Curing process can be dried in a vacuum drying oven, the temperature of dry solidification is 100 DEG C, dry solidification
Time be 30min.
Step 4: thermal cell anode composite pole piece is stacked in composite sheet, make molten salt electrolyte layer be in positive plate with
It between negative electrode tab, is pressed together, pole piece semi-finished product must be combined.Here, the intensity of pressing is 8Mpa, and the time of pressing is 2min.
Step 5: it by heating powder of thermal batteries material, the second binder and the second dispersant and stirs evenly, must heat
Slurry material, will heat slurry material be respectively coated in combination pole piece semi-finished product two sides plus plate current-collecting body on and negative current collector on,
After dry solidification, compression process is carried out, forms combination pole piece finished product.Heating powder of thermal batteries material is the mixed of Fe powder and KClO 4
Close object；Wherein, the mass percent that the mass percent of Fe powder is 5%, KClO 4 is 95%, and the second binder is polytetrafluoroethyl-ne
Alkene lotion, the second dispersing agent are alkane organic solvent of ketone, and alkane organic solvent of ketone is specially C5H9N3O5.Heat each of slurry material
Component is by mass percentage are as follows: by heating powder of thermal batteries material 50%, the second binder 20%, remaining is the second dispersing agent.Heating
Slurry material be coated on negative current collector on a thickness of 100 μm, heating slurry material be coated on negative current collector on a thickness of 100
μm.Curing process can be dried in a vacuum drying oven, the temperature of dry solidification is 100 DEG C, and the time of dry solidification is
30min.The intensity of compacting is 6Mpa, and the time of compacting is 2min.
Embodiment three:
A kind of method for preparing thermal cell combination pole piece of the present invention, comprising the following steps:
Step 1: positive electrode powder of thermal batteries body material, first binder, the first dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, positive composite mortar is obtained, positive composite mortar is coated on plus plate current-collecting body, after dry solidification, carries out compression process,
Form positive plate.Here, positive electrode powder of thermal batteries body material is FeS2；First binder is epoxy resin；First dispersing agent is to go
Ionized water；Molten salt electrolyte is the mixture of KCl and LiCl, wherein the mass percent of KCl is the quality percentage of 40%, LiCl
Than being 60%；The each component of positive composite mortar is by mass percentage are as follows: positive electrode powder of thermal batteries body material 45%, molten salt electrolyte
15%, first binder 10%, remaining is the first dispersing agent；Plus plate current-collecting body uses graphite paper, and positive composite mortar is coated on just
On the collector of pole with a thickness of 1000 μm, plus plate current-collecting body with a thickness of 50 μm；Solidification can be dried in a vacuum drying oven
Processing, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting is 10Mpa, the time of compacting
For 1min.
Step 2: thermal cell cathode powder body material, the second binder, the second dispersing agent and molten salt electrolyte are mixed and is stirred
It mixes uniformly, obtains cathode composite mortar, cathode composite mortar is coated on negative current collector, after dry solidification, is suppressed
Processing forms negative electrode tab.Here, thermal cell cathode powder body material is Li-Si alloy, and molten salt electrolyte is the mixing of KCl and LiCl
Object, wherein the mass percent that the mass percent of KCl is 40%, LiCl is 60%, and the second binder is polytetrafluoroethylene (PTFE) cream
Liquid；Second dispersing agent is alkane organic solvent of ketone, and alkane organic solvent of ketone is specially C10H12NO；Cathode composite mortar is coated on
On negative current collector with a thickness of 1000 μm, negative current collector with a thickness of 50 μm；It can be dried in a vacuum drying oven solid
Change processing, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min；The intensity of compacting be 10Mpa, compacting when
Between be 1min
Step 3: it by molten salt electrolyte, the second binder and the second dispersant and stirs evenly, obtains molten-salt electrolysis chylema
Molten salt electrolyte slurry is coated in negative electrode tab by material, after dry solidification, forms the composite sheet for being compounded with molten salt electrolyte layer.
Here, the KCl and mixed by the LiCl that mass percent is 40% that molten salt electrolyte is 60% by mass percent, second is viscous
Knot agent is ptfe emulsion；Second dispersing agent is alkane organic solvent of ketone, and alkane organic solvent of ketone is specially C10H12NO；
The each component of molten salt electrolyte slurry is by mass percentage are as follows: molten salt electrolyte 60%, the second binder 10%, remaining is second point
Powder.Curing process can be dried in a vacuum drying oven, the temperature of dry solidification is 100 DEG C, and the time of dry solidification is
30min。
Step 4: thermal cell anode composite pole piece is stacked in composite sheet, make molten salt electrolyte layer be in positive plate with
It between negative electrode tab, is pressed together, pole piece semi-finished product must be combined.Here, the intensity of pressing is 12Mpa, and the time of pressing is 1min.
Step 5: it by heating powder of thermal batteries material, the second binder and the second dispersant and stirs evenly, must heat
Slurry material, will heat slurry material be respectively coated in combination pole piece semi-finished product two sides plus plate current-collecting body on and negative current collector on,
After dry solidification, compression process is carried out, forms combination pole piece finished product.Heating powder of thermal batteries material is the mixed of Fe powder and KClO 4
Close object；Wherein, the mass percent that the mass percent of Fe powder is 20%, KClO 4 is 80%；Second dispersing agent is that alkanone class has
Solvent, alkane organic solvent of ketone are specially C10H12NO.Heat each component of slurry material by mass percentage are as follows: by thermal cell
Powder material 60%, the second binder 10% are heated, remaining is the second dispersing agent.Heat the thickness that slurry material is coated on negative current collector
Degree be 200 μm, heating slurry material be coated on negative current collector on a thickness of 200 μm.It can be dried in a vacuum drying oven
Curing process, the temperature of dry solidification are 100 DEG C, and the time of dry solidification is 30min.The intensity of compacting is 10Mpa, compacting
Time is 1min.
The thermal cell as made of gained combination pole piece final package in each embodiment, activationary time are significantly less than traditional powder
The activationary time of thermal cell made of last electrode pressing piece encapsulation.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of method for preparing thermal cell combination pole piece, it is characterised in that: the following steps are included:
Step 1: positive electrode powder of thermal batteries body material, first binder, the first dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, positive composite mortar is obtained, positive composite mortar is coated on plus plate current-collecting body, after dry solidification, carries out compression process,
Form positive plate；
Step 2: thermal cell cathode powder body material, the second binder, the second dispersing agent and molten salt electrolyte are mixed and stirred for
It is even, cathode composite mortar is obtained, cathode composite mortar is coated on negative current collector, after dry solidification, carries out compression process,
Form negative electrode tab；
Step 3: it by molten salt electrolyte, the second binder and the second dispersant and stirs evenly, obtains molten-salt electrolysis chylema
Molten salt electrolyte slurry is coated in negative electrode tab by material, after dry solidification, forms the composite sheet for being compounded with molten salt electrolyte layer；
Step 4: thermal cell anode composite pole piece is stacked in composite sheet, and molten salt electrolyte layer is made to be in positive plate and cathode
It between piece, is pressed together, pole piece semi-finished product must be combined；
Step 5: it by heating powder of thermal batteries material, the second binder and the second dispersant and stirs evenly, obtains heating slurry
Material will heat slurry material and be respectively coated on the plus plate current-collecting body of combination pole piece semi-finished product two sides and on negative current collector, through dry
After dry solidification, compression process is carried out, forms combination pole piece finished product.
2. a kind of method for preparing thermal cell combination pole piece as described in claim 1, it is characterised in that: the anode is compound
Slurry be coated on plus plate current-collecting body with a thickness of 100~1000 μm, plus plate current-collecting body with a thickness of 10~50 μm.
3. a kind of method for preparing thermal cell combination pole piece as described in claim 1, it is characterised in that: the cathode is compound
Slurry be coated on negative current collector with a thickness of 100~1000 μm, negative current collector with a thickness of 10~50 μm.
4. a kind of method for preparing thermal cell combination pole piece as described in claim 1, it is characterised in that: the heating slurry
Material be coated on negative current collector on a thickness of 10~200 μm, heating slurry material be coated on negative current collector on a thickness of 10
~200 μm.
5. such as a kind of described in any item methods for preparing thermal cell combination pole piece of Claims 1 to 4, it is characterised in that: institute
Stating positive electrode powder of thermal batteries body material is FeS2, and thermal cell cathode powder body material is Li-Si alloy, and molten salt electrolyte is KCl and LiCl
Mixture, wherein the mass percent that the mass percent of KCl is 30~60%, LiCl is 40~70%, and first binder is
Epoxy resin, the first dispersing agent are deionized water, and the second binder is ptfe emulsion, and the second dispersing agent is that alkanone class has
The general formula of solvent, alkane organic solvent of ketone is CmHnNtOs, wherein m=4~10, n=7~12, t=1~3, s=1~5, heat
Battery heats the mixture that powder material is Fe powder and KClO 4；Wherein, the mass percent of Fe powder is 5~20%, KClO's 4
Mass percent is 80~95%；
In the step 1, each component of positive composite mortar is by mass percentage are as follows: and positive electrode powder of thermal batteries body material 30~
60%, molten salt electrolyte 10~20%, first binder 2~10%, remaining is the first dispersing agent；
In the step 2, each component of cathode composite mortar is by mass percentage are as follows: and thermal cell cathode powder body material 30~
60%, molten salt electrolyte 10~20%, the second binder 2~10%, remaining is the second dispersing agent；
In the step 3, each component of molten salt electrolyte slurry is by mass percentage are as follows: molten salt electrolyte 30~60%, second
Binder 2~10%, remaining is the second dispersing agent；
In the step 5, heat slurry material each component by mass percentage are as follows: by heating powder of thermal batteries material 30~60%,
Second binder 2~10%, remaining is the second dispersing agent.
6. such as a kind of described in any item methods for preparing thermal cell combination pole piece of Claims 1 to 4, it is characterised in that: step
Rapid one into step 5, and the temperature of dry solidification is 100 DEG C, and the time of dry solidification is 30min, and the intensity of compacting is 2~
10Mpa, the time of compacting are 1~4min, and the intensity of pressing is 5~12Mpa, and the time of pressing is 1~4min.
7. such as a kind of described in any item methods for preparing thermal cell combination pole piece of Claims 1 to 4, it is characterised in that: just
Pole collector and negative current collector are graphite paper.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400905A (en) * | 2019-06-14 | 2019-11-01 | 江西力能新能源科技有限公司 | A kind of pole piece containing solid electrolyte and preparation method thereof and application |
| CN110534697A (en) * | 2019-09-11 | 2019-12-03 | 中国工程物理研究院电子工程研究所 | A kind of single cell of thermo battery and preparation method thereof |
| CN110890564A (en) * | 2019-11-29 | 2020-03-17 | 贵州梅岭电源有限公司 | Preparation method of co-heating multi-monomer for thermal battery |
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| CN110400905A (en) * | 2019-06-14 | 2019-11-01 | 江西力能新能源科技有限公司 | A kind of pole piece containing solid electrolyte and preparation method thereof and application |
| CN110534697A (en) * | 2019-09-11 | 2019-12-03 | 中国工程物理研究院电子工程研究所 | A kind of single cell of thermo battery and preparation method thereof |
| CN110890564A (en) * | 2019-11-29 | 2020-03-17 | 贵州梅岭电源有限公司 | Preparation method of co-heating multi-monomer for thermal battery |
| CN110890564B (en) * | 2019-11-29 | 2021-01-05 | 贵州梅岭电源有限公司 | Preparation method of co-heating multi-monomer for thermal battery |
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