CN106785028A - Application of the chitosan polymer in terms of solid electrolyte membrane - Google Patents
Application of the chitosan polymer in terms of solid electrolyte membrane Download PDFInfo
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- CN106785028A CN106785028A CN201611178582.8A CN201611178582A CN106785028A CN 106785028 A CN106785028 A CN 106785028A CN 201611178582 A CN201611178582 A CN 201611178582A CN 106785028 A CN106785028 A CN 106785028A
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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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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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
Abstract
The invention belongs to lithium battery preparation field, and in particular to a kind of application of chitosan polymer in terms of solid electrolyte membrane.Described solid electrolyte membrane is obtained using following methods：1) after being cleaned and dried for the shitosan monomer of 50K 500K to molecular weight, it is dissolved into 1% acetum and is configured to the precursor solution that mass concentration is 0.4 1%；2) presoma is added into cross-link dosage form into precrosslink solution；The ratio of the aldehyde radical reactive functionality of described cross-link agent and the amino reactive functionality of described shitosan is 1：1‑1:10；3) precrosslink solution is blended with the polymer molecule solution of the high conductivity containing lithium salts, is obtained blended liquid；4) blended liquid is coated in positive plate surface, carries out in-situ polymerization so that blended liquid is crosslinked film forming, obtain required solid polymer electrolyte membrane.
Description
Technical field
The invention belongs to lithium battery preparation field, and in particular to a kind of chitosan polymer is in terms of solid electrolyte membrane
Using.
Background technology
Due to the traditional fossil energy of global range is increasingly deficient, environmental pollution is serious and the problems such as greenhouse effects it is more tight
Weight.The new energy of accelerated development cleaning, sets up energy system efficiently, safe, realizes that sustainable development of new energy etc. becomes
It is particularly significant and urgent.
Lithium ion battery has energy density high, and output voltage is high, long service life, environment-friendly to wait many merits, extensively
It is general to be applied to consumer electronics, electric tool, medical electronics, electric automobile etc..But with electronic device and electric automobile for
The requirement of lithium ion battery is improved, and lithium ion battery energy density, high rate performance etc. do higher and higher, and the security performance of lithium battery is just
It is particularly important.Many lithium ion batteries still have thermal runaway, overheat, the catching fire even safety wind such as blast now
Danger.
Advantage due to solid electrolyte at aspects such as security, heat endurance, electrochemical stabilities is protruded very much, because
This, exploitation solid lithium ion battery is the only way which must be passed for fundamentally solving safety problem.The general knot of solid lithium ion battery
Structure is positive pole, electrolyte, negative pole, is all made up of solid-state material.It has many advantages compared with conventional lithium ion battery：
1, the potential safety hazard of corrosion and the leakage of electrolyte is eliminated, the security performance of battery is greatly increased；2, it is not necessary to encapsulate liquid, letter
Change processing step, improve production efficiency；3, system and weight can be mitigated, electrochemical window is wide, has using the energy for improving battery
Metric density etc..But due to development time section, technology is not also very ripe to solid lithium ion battery, still there is conductance
The problems such as rate is low, temperature in use is high, mechanical strength is low, interfacial effect is notable, waits for the improvement and solution of scientific research personnel.
Due to the unique advantage of solid lithium ion battery, it is in the latent of the field such as large-sized power battery and miniature thin-film battery
Power is very big.In recent years, scientific research structure all over the world all expands positive research to solid lithium ion battery, and China exists
To this it is also very to pay attention to during " 13 ", a kind of electrical conductivity of improvement all-solid-state battery that this patent is provided is low, machinery
The significant method of low intensity, interfacial effect, for the technological development of national solid lithium ion battery provides a new technical side
To.
The content of the invention
It is an object of the invention to overcome, prior art electrical conductivity is low, temperature in use is high, mechanical strength is low, interfacial effect is aobvious
A kind of defect of work, there is provided solid polymer electrolyte membrane.
To realize the purpose of the present invention, the technical scheme for being used for：
1. a kind of application of chitosan polymer in terms of solid electrolyte membrane, it is characterised in that described solid state electrolysis
Plasma membrane is obtained using following methods：
1) after being cleaned and dried for the shitosan monomer of 50K-500K to molecular weight, it is dissolved into 1% acetum
It is configured to the precursor solution that mass concentration is 0.4-1%；
2) by step 1) presoma that obtains adds cross-link dosage form into precrosslink solution；Described cross-link agent
The ratio of the amino reactive functionality of aldehyde radical reactive functionality and described shitosan is 1：1-1:10；
3) by step 2) the precrosslink solution that obtains is total to the polymer molecule solution of the high conductivity containing lithium salts
It is mixed, obtain blended liquid；
4) by step 3) blended liquid that obtains is coated in positive plate surface, carries out in-situ polymerization so that blended liquid is cross-linked into
Film, obtains required solid polymer electrolyte membrane.
Preferably, step 3) lithium salts concentration be 0.5-2M；The quality of the polymer molecule of described high conductivity is dense
It is 0.5-2% to spend；Preferably, solvent is acetonitrile；
Described cross-link agent is glutaraldehyde.
The polymer molecule of described high conductivity is that molecular weight is polyether compound, the poly- Ammonia chemical combination of 50k-500k
One kind in thing or polysulfide ether compound.Described polyether compound be molecular weight for 50K-500K PEO or
PPO；Described poly- ammoniac compounds are that molecular weight is the polyethyene diamine of 50K-500K；Described polysulfide ether is compound molecule
Measure the poly- dithioglycol for 50K-500K.
Characterized in that, described lithium salts is LiPF6、LiAsF6、LiBF4、LiCl、LiAlCl4、LiSbF6、LiSCN、
LiCF3SO3、LiCF3CO2、LiTFSI、LiN(C4F9SO2)、Li2B12F12Or one or several mixing in LiBOB.
Described positive plate is electrolytic aluminum foil, rolling aluminum foil, carbon-coated aluminum foils, stamp aluminium foil, intersection aluminium wire, ultra-thin aluminium net
Piece, bag stainless steel, nickel, copper, titanium, carbon, electroconductive resin and the one kind being coated with the stainless steel substrates of nickel or titanium.
As one kind therein preferably, described positive plate includes active material and conductive material；Described active matter
Matter includes layered lithium metal oxides, the metal oxide without lithium, spinel structure lithium metal oxide, lithium metal phosphoric acid
One or more mixing in salt, lithium metal fluorination sulfate, lithium metal vanadate；Described conductive material is graphite, second
One kind in acetylene black, conductive fiber, metal dust or organic conductive polymer.
Described positive plate is prepared using following methods：Made after described active material and conductive material are dissolved in into acetonitrile
Into slurry, described slurry is coated to aluminium foil both sides, roll to form positive plate after drying；The quality of described active material is dense
It is 40%-80% to spend；The mass concentration of described conductive material is 5%-30%.
As one kind therein preferably, described positive plate includes active material, conductive material and solid electrolyte；Institute
The solid electrolyte stated includes the lithium salts of the polymer molecule and absorption of high conductivity on described polymer molecule.
The method for preparing described positive plate is：The polymer molecule and lithium salts of high conductivity are dissolved in acetonitrile and are made
Solution；Then active material, and conductive material are added in the solution；Stirring is made slurry, and described slurry is coated to aluminium
Paper tinsel both sides, roll to form positive plate after drying；The mass concentration of the polymer molecule of described high conductivity is 1%-30%；Lithium
The dense mass concentration of salt is 1%-20%；The mass concentration of described active material is 40%-80%；Described conductive material
Mass concentration is 5%-30%..
Compared with prior art, the beneficial effects of the invention are as follows：
Solid polymer electrolyte membrane in the present invention is that the chitosan three-dimensional tunnel of cross-linked structure stabilization and absorption exist
Moved for the ion of lithium battery in the polymer molecule of the high conductivity on the inwall in described chitosan three-dimensional tunnel, micro-nano tunnel
Move and provide passage, and the carbohydrate group of shitosan can reduce the crystallinity of polymer molecule, improve its dispersiveness and machinery
Intensity；And the polymer molecule of high conductivity can increase chitosan three-dimensional tunnel ionic conductivity in itself, two kinds of structure phases
Mutually improve, promote mutually, effectively raise the electrical conductivity of self-contained battery, improve the low defect of its mechanical strength.
It is the most therein it is a kind of preferably solid polymer electrolyte membrane of the invention is coated in positive electrode surface, it is described just
Extremely can be common positive plate, or improved positive plate, as improved positive plate, be added in described positive plate
It is polymerized in described with the polymer molecule of composition identical high conductivity in solid polymer electrolyte membrane and absorption
Lithium salts on thing molecule, makes the content of polymer molecule that staged distribution be presented from positive pole to electrolyte, reduces lithium battery
Interface impedance, obtain the more preferable solid state lithium battery of electrical property.
Meanwhile, the present invention in be modified natural polysaecharides material, its material obtain it is convenient, cheap, to environment without
Pollution, suitable for the pollution-free industry modern industry of sustainable development.
Brief description of the drawings
The polymer molecular structure schematic diagram of Fig. 1 micro-nano three-dimensional tunneled networks of the present invention and absorption high conductivity；
The electron scanning micrograph (SEM) of Fig. 2 Inventive polymers solution plasma membranes；
The chitosan crosslinked reaction schematic diagram of Fig. 3 present invention；
Fig. 4 lithium battery loop-around data figures of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
Fig. 1,2 show a kind of solid polymer electrolyte membrane, including chitosan three-dimensional tunnel 1, and absorption is poly- in described shell
Lithium salts of the polymer molecule 2 and absorption of the high conductivity on the inwall of sugared three-dimensional tunnel on described polymer molecule；
Described chitosan three-dimensional tunnel is that the shitosan with molecular weight as 50K-500K is formed with multiple for monomer carries out cross-linked polymeric
The network structure of micro/nano level hole；The polymer molecule of described high conductivity is that molecular weight is the polyethers of 50k-500k
One kind in compound, poly- ammoniac compounds or polysulfide ether compound.
Embodiment 1：Step 1) it is that solution temperature is 50 DEG C, is dissolved in quality by the shitosan dissolving for reacting film forming
Concentration be 1% aqueous acetic acid in carry out preliminary clearning treatment (described shitosan be that the prawn shell molecular weight that obtains for the treatment of exists
50k, deacetylated rate is the shitosan of 50%-100% scopes), stir 5 hours and form homogeneous chitosan solution；In quartz sand
Funnel carries out filtration under diminished pressure, removes the insoluble matter in chitosan solution；Filtrate freeze-drying, the shitosan after freeze-drying can use
Concentration carries out cleaning 5 times for the sodium hydrate aqueous solution of 1M；Cleaning 5 times is carried out with deionized water again, then under temperature 60 C
It is dried, drying time is 5 hours；Dried shitosan is dissolved in the aqueous acetic acid that mass concentration is 1% and is matched somebody with somebody
It is made the chitosan reaction precursor solution that mass concentration is 0.4%.
Step 2) in the chitosan reaction precursor solution for preparing, add glutaraldehyde modified crosslinking agent, described penta
The mol ratio of the reactive functionality amino in reactive functionality aldehyde radical and shitosan in dialdehyde crosslinking agent is 1:10, stirring
5 minutes, ultrasonically treated 5 minutes, homogeneous shitosan precrosslink solution is formed, crosslinking schematic diagram is as shown in Figure 3.
Step 3) by step 2) the precrosslink shitosan coating solution for preparing, the polymer point with 0.5% high conductivity
The LiTFSI acetonitrile solutions blending of the 0.5M of sub- PEO (molecular weight 50k), is coated, 50 DEG C of originals on positive plate aluminium foil surface
Position is polymerized and dries, and polymerization time is 5 hours so that mixed solution cross-linked polymeric and drying and forming-film, obtain be containing yardstick
The shitosan skeleton of 200-500nm three-dimensional tunnels, the absorption on the PEO polymer long-chain, PEO long-chains of the absorption of three-dimensional tunnel inwall
LITFSI salt multilevel hierarchy dielectric film, the inhibitory action crystallized for PEO long-chains due to polysaccharide functional group in structure and
The tunnel-effect of multilevel hierarchy so that the more conventional technique of ionic conductivity of the dielectric film of preparation has larger lifting；
Step 4) prepare full solid state polymer lithium battery：
Using step 3) prepare positive plate as positive pole, lithium metal piece as negative pole, in the glove box containing inert gas
It is middle that the solid electrolyte membrane and lithium an- ode piece that are coated on positive plate, positive plate are combined with each other, obtain entirely solid after rolling
State poly-lithium battery A1.
Step 5) to prepare solid polymer lithium battery carry out charge-discharge test：
By step 4) the solid polymer lithium battery for preparing carries out battery charging and discharging and follows on U.S.'s Arbin charging/discharging apparatus
Ring test, the capability retention that test is obtained after 200 circulations is better than the PEO solid polymer lithium batteries of conventional method preparation
A0, conventional method is the lithium battery of the solid electrolyte film preparation obtained with positive plate surface by the coating of PEO solution, herein no longer
Repeat.
Embodiment 2：Embodiment 2 is identical with the preparation method of embodiment 1, differs only in, step 1) in shitosan point
Son amount is 200k, is configured to 0.8% chitosan-acetic acid solution；Step 2) middle addition glutaraldehyde, the aldehyde in described glutaraldehyde
The mol ratio of the reactive functionality amino in base and shitosan is 1:5；Step 3) in high conductivity polymer molecule be molecule
Measure as the mass fraction of 200k is 1%PPO, lithium salts is the LiAlCl of 2M4, obtain full solid state polymer lithium battery A2.
Embodiment 3：Embodiment 3 is identical with the preparation method of embodiment 1, differs only in, step 1) in shitosan point
Son amount is 500k, is configured to 0.4% chitosan-acetic acid solution；Step 2) in add glutaraldehyde, the aldehyde radical of described glutaraldehyde
It is 1 with the mol ratio of the reactive functionality amino in shitosan:1；Step 3) in high conductivity polymer molecule be molecular weight
For the mass fraction of 500k is 2%PEO, lithium salts is for the LITFSI of 1M, and the preparation method of positive pole：Added in acetonitrile solution
LiFePO4 LFP as positive electrode active materials and acetylene black and CNT as conductive agent, the wherein mass concentration of LFP
It is 40%, the mass concentration of acetylene black is 2.5%, the mass concentration of CNT is 2.5%；Any of the above material is stirred into 2-
8h, is sufficiently mixed it and prepares slurry.The slurry is coated into the aluminium foil both sides to 12um, in forced air drying 20h at 85 DEG C,
Roll to prepare positive plate.Obtain full solid state polymer lithium battery A3.
Embodiment 4：Embodiment 4 is identical with the preparation method of embodiment 3, differs only in, step 1) in shitosan point
Son amount is 200k, is configured to 1% chitosan-acetic acid solution；Step 3) in the polymer molecule of high conductivity be for molecular weight
The polyethyene diamine of 50k, lithium salts is LITFSI, and the preparation method of positive pole is：Positive-active material is added used as in acetonitrile solution
The LiFePO4 LFP of material and acetylene black and CNT as conductive agent, the wherein mass concentration of LFP are 80%, acetylene black
Mass concentration be 15%, the mass concentration of CNT is 15%；Any of the above material is stirred into 2-8h, it is sufficiently mixed
Prepare slurry.The slurry is coated into the aluminium foil both sides to 12um, in forced air drying 20h at 85 DEG C, rolls to prepare positive pole
Piece.Obtain full solid state polymer lithium battery A4.
Embodiment 5：Embodiment 5 is identical with the preparation method of embodiment 1, differs only in, step 1) in shitosan point
Son amount is 200k, is configured to 0.5% chitosan-acetic acid solution；Step 2) middle addition glutaraldehyde, described glutaraldehyde and shell gather
The mol ratio of the reactive functionality hydroxyl in sugar is 1:5；Step 3) in high conductivity polymer molecule for molecular weight be 500k
1%PEO, lithium salts is the LITFSI of 1M, and the preparation method of positive pole is：It is 200k polyethylene glycol oxides PEO and lithium by molecular weight
Salt LiTFSI is dissolved in acetonitrile, and wherein the mass concentration of PEO is that the mass concentration of 5%, LiTFSI is 5%；Then in the solution
It is added used as the LiFePO4 LFP and acetylene black and CNT as conductive agent of positive electrode active materials, the wherein quality of LFP
Concentration is 40%, and the mass concentration of acetylene black is 2.5%, and the mass concentration of CNT is 2.5%；Any of the above material is stirred
2-8h is mixed, it is sufficiently mixed and is prepared slurry.The slurry is coated into the aluminium foil both sides to 12um, in forced air drying at 85 DEG C
20h, rolls to prepare positive plate.Obtain full solid state polymer lithium battery A5.
Embodiment 6：Embodiment 6 is identical with the preparation method of embodiment 1, differs only in, step 1) in shitosan point
Son amount is 200k, is configured to 0.5% chitosan-acetic acid solution；Step 2) middle addition glutaraldehyde, described glutaraldehyde and shell gather
The mol ratio of the reactive functionality hydroxyl in sugar is 1:5；Step 3) in high conductivity polymer molecule for molecular weight be 500k
PEO, lithium salts is LITFSI, and the preparation method of positive pole is：It is 200k polyethylene glycol oxides PEO and lithium salts LiTFSI by molecular weight
It is dissolved in acetonitrile, wherein the mass concentration of PEO is that the mass concentration of 30%, LiTFSI is 20%；Then add in the solution and use
Make the LiFePO4 LFP and acetylene black and CNT as conductive agent of positive electrode active materials, the wherein mass concentration of LFP is
60%, the mass concentration of acetylene black is 15%, and the mass concentration of CNT is 15%；Any of the above material is stirred into 2-8h,
It is sufficiently mixed it and prepares slurry.The slurry is coated into the aluminium foil both sides to 12um, in forced air drying 20h at 85 DEG C, volume
Rise to prepare positive plate.Obtain full solid state polymer lithium battery A6.
Fig. 4 shows lithium battery loop-around data figure, as can be seen from the figure the solid polymer electrolyte membrane energy in the present invention
The electrical conductivity of self-contained battery is enough effectively raised, meanwhile, preferably, the selection of positive pole can also have to the electrical conductivity of battery
Facilitation.
In a word, chitosan three-dimensional tunnel and suction of the solid polymer electrolyte membrane in the present invention for cross-linked structure stabilization
The polymer molecule of the high conductivity being attached on the inwall in described chitosan three-dimensional tunnel, micro-nano tunnel for lithium battery from
Son migration provides passage, and the carbohydrate group of shitosan can reduce the crystallinity of polymer molecule, improve its dispersiveness and
Mechanical strength；And the polymer molecule of high conductivity can increase chitosan three-dimensional tunnel ionic conductivity in itself, two kinds of knots
Structure mutually improves, and promotes mutually, effectively raises the electrical conductivity of self-contained battery, improves the low defect of its mechanical strength.
It is the most therein it is a kind of preferably solid polymer electrolyte membrane of the invention is coated in positive electrode surface, it is described just
Extremely can be common positive plate, or improved positive plate, as improved positive plate, be added in described positive plate
It is polymerized in described with the polymer molecule of composition identical high conductivity in solid polymer electrolyte membrane and absorption
Lithium salts on thing molecule, makes the content of polymer molecule that staged distribution be presented from positive pole to electrolyte, reduces lithium battery
Interface impedance, obtain the more preferable solid state lithium battery of electrical property.
Meanwhile, the present invention in be modified natural polysaecharides material, its material obtain it is convenient, cheap, to environment without
Pollution, suitable for the pollution-free industry modern industry of sustainable development.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of application of chitosan polymer in terms of solid electrolyte membrane, it is characterised in that described solid electrolyte membrane
It is obtained using following methods：
1) after being cleaned and dried for the shitosan monomer of 50K-500K to molecular weight, it is dissolved into configuration in 1% acetum
It is the precursor solution of 0.4-1% into mass concentration；
2) by step 1) presoma that obtains adds cross-link dosage form into precrosslink solution；The aldehyde radical of described cross-link agent
The ratio of the amino reactive functionality of reactive functionality and described shitosan is 1：1-1:10；
3) by step 2) the precrosslink solution and the polymer molecule solution of the high conductivity containing lithium salts that obtain is blended, obtained
To blended liquid；
4) by step 3) blended liquid that obtains is coated in positive plate surface, carries out in-situ polymerization so that blended liquid is crosslinked film forming, obtains
To required solid polymer electrolyte membrane.
2. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
Cross-link agent be glutaraldehyde.
3. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
High conductivity polymer molecule for molecular weight be the polyether compound of 50k-500k, poly- ammoniac compounds or polythiaether
One kind in class compound.
4. application of the chitosan polymer according to claim 3 in terms of solid electrolyte membrane, it is characterised in that described
Polyether compound for molecular weight for 50K-500K PEO or PPO；Described poly- ammoniac compounds are that molecular weight is 50K-
The polyethyene diamine of 500K；Described polysulfide ether is that compound molecular weight is the poly- dithioglycol of 50K-500K.
5. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
Lithium salts be LiPF6、LiAsF6、LiBF4、LiCl、LiAlCl4、LiSbF6、LiSCN、LiCF3SO3、LiCF3CO2、LiTFSI、
LiN(C4F9SO2)、Li2B12F12Or one or several mixing in LiBOB.
6. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
Positive plate for electrolytic aluminum foil, rolling aluminum foil, carbon-coated aluminum foils, stamp aluminium foil, intersect aluminium wire, ultra-thin aluminium net piece, bag stainless steel,
Nickel, copper, titanium, carbon, electroconductive resin and the one kind being coated with the stainless steel substrates of nickel or titanium.
7. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
Positive plate include active material and conductive material；Described active material is including layered lithium metal oxides, without lithium
Metal oxide, spinel structure lithium metal oxide, lithium metal phosphates, lithium metal fluorination sulfate, lithium metal vanadate
In one or more mixing；Described conductive material is graphite, acetylene black, conductive fiber, metal dust or organic leads
One kind in electric polymer.
8. application of the chitosan polymer according to claim 7 in terms of solid electrolyte membrane, it is characterised in that described
Positive plate using following methods prepare：Slurry is made after described active material and conductive material are dissolved in into acetonitrile, by institute
The slurry stated is coated to aluminium foil both sides, rolls to form positive plate after drying；The mass concentration of described active material is 40%-
80%；The mass concentration of described conductive material is 5%-30%.
9. application of the chitosan polymer according to claim 1 in terms of solid electrolyte membrane, it is characterised in that described
Positive plate include active material, conductive material and solid electrolyte；Described solid electrolyte includes the poly- of high conductivity
The lithium salts of adduct molecule and absorption on described polymer molecule.
10. application of the chitosan polymer according to claim 9 in terms of solid electrolyte membrane, it is characterised in that system
The method of standby described positive plate is：The polymer molecule and lithium salts of high conductivity are dissolved in acetonitrile and are made solution；Then
Active material, and conductive material are added in the solution；Stirring is made slurry, and described slurry is coated to aluminium foil both sides, does
Roll to form positive plate after dry；The mass concentration of the polymer molecule of described high conductivity is 1%-30%；The dense matter of lithium salts
Amount concentration is 1%-20%；The mass concentration of described active material is 40%-80%；The mass concentration of described conductive material
It is 5%-30%.
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