CN106252659A - Integrated flexible thin film lithium sulfur or lithium ion battery cell, battery and preparation method - Google Patents
Integrated flexible thin film lithium sulfur or lithium ion battery cell, battery and preparation method Download PDFInfo
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- CN106252659A CN106252659A CN201610870698.1A CN201610870698A CN106252659A CN 106252659 A CN106252659 A CN 106252659A CN 201610870698 A CN201610870698 A CN 201610870698A CN 106252659 A CN106252659 A CN 106252659A
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of integrated flexible thin film lithium sulfur or lithium ion battery cell, battery and preparation method.The preparation method of this battery battery core comprises: step 1, prepares anode sizing agent；Step 2, is attached on barrier film the first side by anode sizing agent, forms anode sizing agent layer；Step 3, prepares positive conductive slurry；Step 4, is attached on positive conductive slurry on anode sizing agent layer, forms positive electrode conducting layer；Step 5, prepares cathode size；Step 6, is attached on barrier film the second side by cathode size, forms cathode size layer；Step 7, prepares negative conductive slurry；Step 8, is attached on negative conductive slurry on cathode size layer, forms negative conducting layer, obtains battery core.Battery battery core prepared by the present invention does not contains collector, positive and negative electrode and barrier film one, and whole battery core is film like, has extremely strong pliability.The flexible package lithium-sulfur cell that the battery discharge specific energy using the battery battery core of the present invention to prepare is prepared higher than conventional method, and cycle performance is suitable.
Description
Technical field
The invention belongs to electrochemical energy storage technical field, relate to a kind of lithium-sulfur cell or lithium ion battery, in particular it relates to
A kind of integrated flexible thin film lithium sulfur or lithium ion battery cell, resultant battery and preparation method thereof.
Background technology
Increasingly serious along with world today's energy and environment problem, people are for clean and effective and the need of regenerative resource
Asking and be continuously increased, the Efficient Conversion of energy is the most of increasing concern with storage.High-energy-density and eco-friendly lithium-ion electric
Pond and lithium-sulfur cell become the newly selected of energy storage field.And along with the development of flexibility/foldable electronic in recent years,
Exploitation has high-energy-density (i.e. high power capacity), high power density (can fast charging and discharging) and has the flexible lithium of bending stability
Ion battery has become one of focus of current energy storage area research the most.
Existing lithium ion battery or lithium-sulfur cell are by anode pole piece, cathode pole piece, lug, barrier film, electrolyte, outer package
Composition.Generally using metal aluminum foil as plus plate current-collecting body, Copper Foil is as negative current collector, by active material in a form of slurry
Be coated in metal collector and prepare positive and negative, pole pole piece, then by positive and negative electrode pole piece with barrier film separately with lamination or winding
Mode is assembled into battery core.The battery core that this method is prepared, pliability is very poor, and metal collector and active material adhesion strength
Deficiency, causes active material low with collector interface bond strength, easy to fall off under bending state.The most this method is prepared
Battery be not suitable for the flexible battery that use process need to repeatedly bend.
Summary of the invention
It is an object of the invention to provide a kind of without metal collector, the flexibility being positive and negative electrode material support with barrier film
Integration thin film lithium-sulfur cell or lithium ion battery cell, resultant battery and preparation method thereof.The method uses barrier film as propping up
Support body, positive and negative electrode material is attached on the both sides of barrier film respectively.Use the lithium-sulfur cell prepared of the present invention or lithium ion battery cell
Without conventional aluminium foil, copper foil current collector, positive and negative electrode and barrier film one, whole battery core is film like, has extremely strong pliable and tough
Property.
For reaching above-mentioned purpose, the invention provides a kind of integrated flexible thin film lithium sulfur or the system of lithium ion battery cell
Preparation Method, the method comprises:
Step 1, is uniformly prepared by mixing into anode sizing agent by positive active material, conductive agent, binding agent, solvent；
Step 2, is attached on barrier film the first side by anode sizing agent, forms anode sizing agent layer, dries；
Step 3, is uniformly mixed with positive conductive slurry by conductive material, binding agent, solvent；
Step 4, is attached on positive conductive slurry on anode sizing agent layer, and lug or lug lead pressure are attached to electrocondution slurry
On, form positive electrode conducting layer, dry；
Step 5, prepares cathode size by negative electrode active material, conductive agent, binding agent, solvent mix homogeneously；
Step 6, is attached on barrier film the second side by cathode size, forms cathode size layer, dries；
Step 7, is uniformly mixed with negative conductive slurry by conductive material, binding agent, solvent；
Step 8, is attached on negative conductive slurry on cathode size layer, and lug or lug lead pressure are attached to electrocondution slurry
On, form negative conducting layer, dry, obtain battery core.
Step 1, in 5, described hybrid mode is mechanical mixture, ball milling or ultrasonic mixing.
Step 2, in 4,6,8, the method for sticking of described slurry includes: scratches, spray, transfer coated, electrophoretic deposition.
Step 4, in 8, described lug is the tinsel of band sealing, metal wire, bonding jumper；Lug lead is metal
Silk, metal wire, bonding jumper.Described positive and negative electrode lug lead can not contact with each other after sticking, and ensures that welding is positive and negative
After the lug of pole, lug does not contacts.
Step 2, in 4,6,8, described drying temperature is 40 ~ 100 DEG C.
Preferably, in step 1, positive active material selects lithium sulfur battery anode material or anode material for lithium-ion batteries.
Preferably, described lithium sulfur battery anode material includes elemental sulfur, lithium sulfide, polysulfide (the most lithium sulfides),
Or, elemental sulfur, lithium sulfide or polysulfide and carbon or conducting polymer compound or mix material.
Preferably, described anode material for lithium-ion batteries includes the acid of LiFePO4, cobalt acid lithium, LiMn2O4, lithium manganese phosphate, nickel
One or more combinations in manganese lithium, phosphoric acid vanadium lithium, nickel ion doped and nickel cobalt manganese, nickel cobalt aluminum, rich lithium ternary material.
Preferably, in step 1, the ratio of positive active material contained by described anode sizing agent is 50% ~ 89%, the ratio of conductive agent
Example is 1 ~ 40%, and the ratio of binding agent is 1% ~ 10%；In step 5, the ratio 50% ~ 89% of described negative electrode active material, conductive agent
Ratio be 1 ~ 40%, the ratio of binding agent is 10%, and aforementioned proportion is by weight percentage.
Preferably, described negative electrode active material includes lithium metal, native graphite, Delanium, silicon-base alloy, silica-based oxidation
One or more in thing, kamash alloy, tin-based oxide (such as stannum oxide), lithium titanate, titanium dioxide, ferrum oxide and cobalt oxide
Combination.
Described conductive agent includes acetylene black, Ketjen black, Super P, Super S, 350G, carbon fiber, graphite agent, stone
In ink alkene, macropore carbon, mesoporous carbon, microporous carbon, graded porous carbon, activated carbon, hollow carbon sphere, CNT, carbon fiber, fullerene
One or more.
Described binding agent is selected from polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), sodium carboxymethyl cellulose
(CMC), polyvinyl alcohol (PVA), modified styrene butadiene rubber (SBR), LA series binding agent.
Described solvent includes water, N-Methyl pyrrolidone, ethanol, dimethylbenzene, butyrolactone.
Described barrier film includes polyethylene diagrams, polypropylene diaphragm, Kynoar barrier film, cellulose composite diaphragm, and with
Upper barrier film modifies, through carbon, metal-oxide, organic polymer, the composite diaphragm formed.
Described conductive material include acetylene black, Ketjen black, Super P, Super S, 350G, graphite agent, Graphene,
Macropore carbon, mesoporous carbon, microporous carbon, graded porous carbon, activated carbon, hollow carbon sphere, CNT, carbon fiber, fullerene, metal are received
One or more in rice grain, metal nanometer line.
Present invention also offers integrated flexible thin film lithium sulfur or lithium ion battery cell prepared by a kind of above-mentioned method,
This battery core uses barrier film also to comprise as supporter, this battery core: sticks and is arranged on the anode sizing agent layer of barrier film both sides, cathode size
Layer, is arranged on the positive electrode conducting layer on anode sizing agent layer, and, it is arranged on the negative conducting layer on cathode size layer.
Present invention also offers and a kind of comprise above-mentioned integrated flexible thin film lithium sulfur or the battery of lithium ion battery cell,
This battery also comprises electrolyte and seals outer package, and described battery core and electrolyte sealing are placed in outer package.
Preferably, described outer package material is aluminum plastic film or stainless steel membrane；Described outer packaging bag shape can be arbitrary shape
Shape；Described electrolyte is made up of lithium salts, solvent, additive.
Present invention also offers the preparation method of a kind of above-mentioned battery, it comprises: step 1, adopts and makes with the aforedescribed process
For battery core, it comprises both positive and negative polarity lug: when the electrocondution slurry of battery core both positive and negative polarity presses attached lug lead, by battery core both positive and negative polarity pole
Ear is welded on this lug lead；When electrocondution slurry directly presses attached lug, then need not turn weldering；Step 2, seals outer package
Pouch, this bag stays a mouth to make battery core pass through；Step 3, is placed in battery core in outer package, injects the electrolyte into battery core；Step
4, outer package is fully sealed.
The battery core that the present invention provides is integrally forming without the collectors such as conventional aluminium foil, Copper Foil, its positive and negative electrode and barrier film,
Whole battery core is film like, has extremely strong pliability.Use the integrated flexible flexible package lithium-sulfur cell prepared by this battery core
The flexible package lithium-sulfur cell prepared higher than conventional method of electric discharge specific energy, and cycle performance is suitable.
Accompanying drawing explanation
Fig. 1 is integrated flexible thin film lithium sulfur or the schematic cross-section of lithium ion battery cell of the present invention.
Fig. 2 is the photo of the battery battery core prepared by embodiments of the invention 1.
Fig. 3 is scanning electron microscope (SEM) figure in battery battery core cross section prepared by embodiments of the invention 1.
Fig. 4 is with the cycle performance curve of the flexible-packed battery prepared by embodiments of the invention 2 and comparative example.
Detailed description of the invention
Below in conjunction with accompanying drawing, by specific embodiment, the invention will be further described, and these embodiments are merely to illustrate
The present invention, is not limiting the scope of the invention.
As it is shown in figure 1, a kind of integrated flexible thin film lithium sulfur provided for the present invention or lithium ion battery cell, this battery core
Barrier film 3 is used also to comprise as supporter, this battery core: to stick and be arranged on the anode sizing agent layer 2 of barrier film both sides, cathode size layer 4,
It is arranged on the positive electrode conducting layer 1 on anode sizing agent layer, and, it is arranged on the negative conducting layer 5 on cathode size layer.
Described battery core has splendid pliability, can be prepared as arbitrary shape.
Embodiment 1
Weigh 0.5g PVDF and add 30g NMP(N-methyl pyrrolidone) in, the most molten to PVDF by magnetic stirrer
Solve；Weigh 0.4g acetylene black, 0.1g CNT adds in PVDF solution, stirs 2h；Weigh 4g richness lithium ternary material to add
State in dispersion liquid, stir 8h, obtain anode sizing agent.Anode sizing agent is scratched on polyethylene diagrams, puts into 60 DEG C of oven dryings.
Weigh 0.2g PVDF to be placed in 30g NMP, be completely dissolved to PVDF by magnetic stirrer；Weigh 0.15g
SP, 0.1g VGCF, 0.5g Graphene adds in PVDF solution, stirs 3h, obtains electrocondution slurry；Electrocondution slurry is just sprayed on
In the coating of pole, lug pressure is sticked on electrocondution slurry, put into 90 DEG C of oven dryings.
Weigh 0.4g CMC to add in 20g deionized water to stir to CMC and be completely dissolved；Weigh 0.3g Super S, 0.2g
VGCF adds in CMC solution, stirs 2h；；Weighing 4g graphite material and add stirring 6h in CMC solution, adding 1g concentration is 1%
SBR dispersion liquid stirring 1h, obtains cathode size, scratches cathode size at above-mentioned barrier film opposite side, put into 50 DEG C of oven dryings.
Weigh 0.1g PVDF to be placed in deionized water, be completely dissolved to PVDF by magnetic stirrer；Weigh 0.2g
Acetylene black, 0.3g CNT, 0.4g Graphene add in PVDF solution, stir 3h, obtain electrocondution slurry；By electrocondution slurry
It is sprayed in negative pole coating, lug pressure is sticked on electrocondution slurry, put into 70 DEG C of oven dryings, obtain battery core.
Gained battery core material object photo is shown in that Fig. 2, the stereoscan photograph in gained battery core cross section are shown in Fig. 3.In Fig. 3,1,2,3,4,5
It is respectively positive electrode conducting layer, anode sizing agent layer, barrier film, cathode size layer, negative conducting layer.
With heat sealing machine, aluminum plastic film three side sealing is dressed up bag；Above-mentioned battery core is placed in aluminum plastic film bag；Inject the electrolyte into electricity
Core；Aluminum plastic film is fully sealed.Battery standing is evacuation after 48 hours.Battery is carried out electric performance test.0.1C discharge and recharge times
Under rate, this battery specific capacity is up to 257Wh/kg.
Embodiment 2
Weigh 0.5g PVDF to add in 30g NMP, be completely dissolved to PVDF by magnetic stirrer；Weigh 0.4g Super
P and 0.1g VGCF adds in PVDF solution, stirs 2h；Weigh 4g carbon/sulfur composite and add in above-mentioned dispersion liquid, stirring
8h, obtains anode sizing agent.Anode sizing agent is scratched on polyethylene diagrams, puts into 60 DEG C of oven dryings.
Weigh 0.3g PVDF to be placed in 30g NMP, be completely dissolved to PVDF by magnetic stirrer；Weigh 0.6g
SP, 0.3g VGCF, 0.1g Graphene adds in PVDF solution, stirs 3h, obtains electrocondution slurry；Electrocondution slurry is just sprayed on
In the coating of pole, lug pressure is sticked on electrocondution slurry, put into 90 DEG C of oven dryings.
In drying shed, weigh 0.5g PVDF and add in 20g gamma-butyrolacton to stir to PVDF and be completely dissolved；Weigh 4g
The lithium powder particles of surface passivating treatment adds stirring 6h in PVDF solution, obtains cathode size, scratches cathode size above-mentioned
Barrier film opposite side, puts into 50 DEG C of oven dryings.
Weigh 0.3g PVDF to be placed in 30g gamma-butyrolacton, be completely dissolved to PVDF by magnetic stirrer；Weigh
0.2g acetylene black, 0.3g CNT, 0.4g Graphene add in PVDF solution, stir 3h, obtain electrocondution slurry；It is being dried
Electrocondution slurry is sprayed in negative pole coating in room, lug pressure is sticked on electrocondution slurry, put into 70 DEG C of oven dryings, obtain electricity
Core finished product.
With heat sealing machine, aluminum plastic film three side sealing is dressed up bag；Above-mentioned battery core is placed in aluminum plastic film bag；Inject the electrolyte into electricity
Core；Aluminum plastic film is fully sealed.Battery standing is evacuation after 48 hours.With 0.05C charge-discharge magnification, battery is carried out electrical property
Test.The electric discharge specific energy of positive pole is shown in Fig. 4 with the change curve of cycle-index.
Comparative example
Weigh 0.5g PVDF to add in 30g NMP, be completely dissolved to PVDF by magnetic stirrer；Weigh 0.4g Super
P and 0.1g VGCF adds in PVDF solution, stirs 2h；Weigh 4g carbon/sulfur composite and add in above-mentioned dispersion liquid, stirring
8h, obtains anode sizing agent.Anode sizing agent is scratched on aluminium foil, it is ensured that the surface density of pole piece positive electrode is identical with embodiment 2,
Put into 60 DEG C of oven dryings.Anode pole piece is cut by embodiment 2 pole piece size.Barrier film is same as in Example 2, is negative with lithium band
Pole, assembles flexible-packed battery.Battery standing is evacuation after 48 hours.With the charge-discharge magnification of 0.05C, battery is carried out electrical property
Test.The electric discharge specific energy of positive pole is shown in Fig. 4 with the change curve of cycle-index.
From fig. 4, it can be seen that the electric discharge specific energy of the integrated flexible flexible package lithium-sulfur cell prepared by the present invention is higher than routine
Flexible package lithium-sulfur cell prepared by method, and cycle performance is suitable.
In sum, the battery core that the present invention provides is without collector, and its positive and negative electrode is integrally forming with barrier film, whole battery core
In film like, there is extremely strong pliability.Use the electric discharge ratio of integrated flexible flexible package lithium-sulfur cell prepared by this battery core
The flexible package lithium-sulfur cell that energy is prepared higher than conventional method, and cycle performance is suitable.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. an integrated flexible thin film lithium sulfur or the preparation method of lithium ion battery cell, it is characterised in that the method comprises:
Step 1, is uniformly prepared by mixing into anode sizing agent by positive active material, conductive agent, binding agent, solvent；
Step 2, is attached on barrier film the first side by anode sizing agent, forms anode sizing agent layer, dries；
Step 3, is uniformly mixed with positive conductive slurry by conductive material, binding agent, solvent；
Step 4, is attached on positive conductive slurry on anode sizing agent layer, and lug or lug lead pressure are attached to electrocondution slurry
On, form positive electrode conducting layer, dry；
Step 5, prepares cathode size by negative electrode active material, conductive agent, binding agent, solvent mix homogeneously；
Step 6, is attached on barrier film the second side by cathode size, forms cathode size layer, dries；
Step 7, is uniformly mixed with negative conductive slurry by conductive material, binding agent, solvent；
Step 8, is attached on negative conductive slurry on cathode size layer, and lug or lug lead pressure are attached to electrocondution slurry
On, form negative conducting layer, dry, obtain battery core.
2. integrated flexible thin film lithium sulfur as claimed in claim 1 or the preparation method of lithium ion battery cell, its feature exists
In, in step 1, positive active material selects lithium sulfur battery anode material or anode material for lithium-ion batteries.
3. integrated flexible thin film lithium sulfur as claimed in claim 2 or the preparation method of lithium ion battery cell, its feature exists
In, described lithium sulfur battery anode material includes elemental sulfur, lithium sulfide, polysulfide, or, elemental sulfur, lithium sulfide or polysulfide
With the compound of carbon or conducting polymer or mix material.
4. integrated flexible thin film lithium sulfur as claimed in claim 2 or the preparation method of lithium ion battery cell, its feature exists
In, described anode material for lithium-ion batteries includes LiFePO4, cobalt acid lithium, LiMn2O4, lithium manganese phosphate, nickel acid manganese lithium, vanadium phosphate
One or more combinations in lithium, nickel ion doped and nickel cobalt manganese, nickel cobalt aluminum, rich lithium ternary material.
5. integrated flexible thin film lithium sulfur as claimed in claim 1 or the preparation method of lithium ion battery cell, its feature exists
In, in step 1, the ratio of positive active material contained by described anode sizing agent is 50% ~ 89%, and the ratio of conductive agent is 1 ~ 40%, viscous
The ratio of knot agent is 1% ~ 10%；In step 5, the ratio 50% ~ 89% of described negative electrode active material, the ratio of conductive agent is 1 ~
40%, the ratio of binding agent is 10%, and aforementioned proportion is by weight percentage.
6. integrated flexible thin film lithium sulfur as claimed in claim 1 or the preparation method of lithium ion battery cell, its feature exists
In, described negative electrode active material include lithium metal, native graphite, Delanium, silicon-base alloy, silicon-base oxide, kamash alloy,
The combination of one or more in tin-based oxide, lithium titanate, titanium dioxide, ferrum oxide and cobalt oxide.
7. integrated flexible thin film lithium sulfur as claimed in claim 1 or the preparation method of lithium ion battery cell, its feature exists
In, described conductive agent include acetylene black, Ketjen black, Super P, Super S, 350G, carbon fiber, graphite agent, Graphene,
In macropore carbon, mesoporous carbon, microporous carbon, graded porous carbon, activated carbon, hollow carbon sphere, CNT, carbon fiber, fullerene one
Plant or multiple；Described binding agent is selected from polyvinylidene fluoride, politef, sodium carboxymethyl cellulose, polyvinyl alcohol, modified fourth
One or more in benzene rubber and LA series binding agent；Described solvent includes water, N-Methyl pyrrolidone, ethanol, diformazan
Benzene, butyrolactone；Described barrier film includes polyethylene diagrams, polypropylene diaphragm, Kynoar barrier film, cellulose composite diaphragm, and
Above barrier film modifies, through carbon, metal-oxide, organic polymer, the composite diaphragm formed；Described conductive material includes acetylene
Black, Ketjen black, Super P, Super S, 350G, graphite agent, Graphene, macropore carbon, mesoporous carbon, microporous carbon, classification are many
One in hole carbon, activated carbon, hollow carbon sphere, CNT, carbon fiber, fullerene, metal nanoparticle, metal nanometer line or
Multiple.
8. the integrated flexible thin film lithium sulfur that prepared by method according to claim 1 or a lithium ion battery cell, its
Being characterised by, this battery core uses barrier film (3) also to comprise as supporter, this battery core: stick the positive pole slurry being arranged on barrier film both sides
The bed of material (2), cathode size layer (4), be arranged on the positive electrode conducting layer (1) on anode sizing agent layer, and, it is arranged on cathode size layer
On negative conducting layer (5).
9. comprise the integrated flexible thin film lithium sulfur described in claim 8 or a battery for lithium ion battery cell, its feature
Being, this battery also comprises electrolyte and seals outer package, and described battery core and electrolyte sealing are placed in outer package.
10. the preparation method of battery as claimed in claim 9, it is characterised in that the method comprises: step 1, uses right to want
The method asking 1 prepares battery core, and it comprises both positive and negative polarity lug；Step 2, seals pouch by outer package, and this bag stays a mouth to make battery core
Pass through；Step 3, is placed in battery core in outer package, injects the electrolyte into battery core；Step 4, fully seals outer package.
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