CN104810555B - A kind of high-lithium ion conductivity fast-ionic conductor and its preparation - Google Patents
A kind of high-lithium ion conductivity fast-ionic conductor and its preparation Download PDFInfo
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- CN104810555B CN104810555B CN201410036341.4A CN201410036341A CN104810555B CN 104810555 B CN104810555 B CN 104810555B CN 201410036341 A CN201410036341 A CN 201410036341A CN 104810555 B CN104810555 B CN 104810555B
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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
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- 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
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
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- H01M2300/0085—Immobilising or gelification of electrolyte
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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
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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 present invention provides a kind of high-lithium ion conductivity fast-ionic conductor, and preparation method thereof.Specifically, the present invention provides it is a kind of improve lithium fast-ionic conductor material total conductivity method, the method includes：(1) a lithium fast-ionic conductor material is provided；(2) solution containing lithium ion is provided, wherein by lithium fast-ionic conductor material submergence；(3) by the material and solution heat preservation a period of time, material is taken out, the Lithium Ionic Conducting Materials of ionic conductivity raising are obtained.The method has many advantages, such as at low cost, suitable extensive manufacture.
Description
Technical field
The present invention relates to fast-ionic conductor fields, in particular it relates to which a kind of fast ion of high-lithium ion conductivity is led
Body, and preparation method thereof.
Background technology
With the extensive application of the information equipments such as PC, video camera and mobile phone, the lithium-ion electric used as power supply
Pond is of increased attention.Since lithium ion battery energy density is high, small, self-discharge rate is low, be one kind has very much
The battery of future.Based on these advantages, lithium ion battery also results in enough in terms of power battery and large capacity stored energy application
Concern.
In recent years, pair automobile dynamic system research that can replace internal combustion engine is paid attention to by the whole world.Wherein, lithium ion battery exists
There is advantage outstanding will gradually replace ni-mh with the development of technology for energy density, power density and cycle life etc.
Power battery and be widely used in parallel hybrid electric vehicle (PHEV) and pure electric automobile (BEV).
Electric vehicle has pushed solid lithium battery significantly to the active demand of large capacity high security rechargeable battery
Research and development replace the solid state lithium battery of traditional liquid organic electrolyte just to attract and more and more pay close attention to and look steadily with solid electrolyte
Mesh.Using next-generation power battery as in the power supply of application background, energy density improves and is expected to ensure the solid-state lithium electricity of safety
Pond is becoming the candidate of a great competitiveness.
The conditions such as lithium ion battery has had been provided with the long-life at present, safe and reliable, maintenance cost is few, transfer efficiency is high,
And with the progress of battery management system technology, the difficult point of large-scale integrated application is breached, has gradually been developed into novel
The ideal source of chemical energy storage technology can be used for the frequency modulation, phase modulation and pressure regulation of intelligent grid, ensure the quality of new energy electric power.
And there is solid electrolyte liquid electrolyte to be difficult the safety of analogy, chemical stability is good, and use temperature range is wide, the service life
It is long.Although there is the above advantage, migration rate of the carrier in solid electrolyte is slower compared to other steps, therefore at
For the rate determining step in electrochemical reaction.Therefore, the solid electrolyte material for preparing high ionic conductivity is solid-state lithium electricity
Pond its obtain the key point of practical application.
Currently, oxide lithium ion solid electrolyte, such as NASICON types, garnet structure, perovskite structure lithium are fast
Ion conductor is since its stability is good, the characteristic that can be used in air, has obtained extensively and in-depth study.No matter however,
It is ceramiic solid electrolyte material or glass ceramics solid electrolyte material, total conductivity is still relatively low, does not reach real
The requirement of border application.
In conclusion this field, which still lacks one kind, can effectively prepare total conductivity height, lithium ion battery can be applied to
Solid electrolyte method.
Invention content
The object of the present invention is to provide a kind of total conductivity height, can be applied to the solid electrolyte of lithium ion battery.
The first aspect of the present invention provides a kind of method improving lithium fast-ionic conductor material total conductivity, the side
Method includes：
(1) a lithium fast-ionic conductor material is provided；
(2) solution containing lithium ion is provided, wherein by lithium fast-ionic conductor material submergence；
(3) material and the solution are kept the temperature, takes out material, the lithium ion for obtaining ionic conductivity raising is led
Body material.
In another preferred example, the lithium fast-ionic conductor material does not react with solution.
In another preferred example, the solution containing lithium ion is saturation lithium salt solution.
In another preferred example, the lithium salts is selected from the group：LiNO3、LiCl、Li2SO4、CH3COOLi, or combinations thereof.
In another preferred example, each lithium salts is unable to interreaction in the solution.
In another preferred example, the holding temperature is 60-100 DEG C.
In another preferred example, the heat preservation is carried out by method selected from the group below：Constant temperature oven heating, water-bath add
Heat, oil bath heating, hydrothermal reaction kettle heating.
In another preferred example, the soaking time is 3-10 days.
In another preferred example, the lithium fast-ionic conductor is selected from the group：LiTi2(PO4)3Based solid electrolyte,
LiGe2(PO4)3Based solid electrolyte, garnet-base solid electrolyte, perovskite structure lithium fast-ionic conductor.
In another preferred example, before the ionic conductivity of the method treated lithium fast-ionic conductor material is more untreated
>=30% is improved, is more preferably >=50% preferably >=40%.
In another preferred example, before the ionic conductivity of the method treated lithium fast-ionic conductor material is more untreated
Improve >=100%.
The second aspect of the present invention, provides a kind of lithium fast-ionic conductor material, and the lithium fast-ionic conductor material is
With the processed lithium fast-ionic conductor material of method as described in the first aspect of the invention.
In another preferred example, lithium fast-ionic conductor is selected from the group：LiTi2(PO4)3Based solid electrolyte, LiGe2(PO4)3
Based solid electrolyte, garnet-base solid electrolyte.
In another preferred example, lithium fast-ionic conductor is selected from the group：LAGP,LLZ,LLTO.
In another preferred example, the ionic conductivity of the material is >=1.0 × 10-4S/cm, preferably >=2.0 ×
10-4S/cm is more preferably >=5.0 × 10-4S/cm。
The third aspect of the present invention, provides a kind of product, and the product includes lithium as described in respect of the second aspect of the invention
Fast ion conducting material or the product are with lithium fast-ionic conductor material preparation as described in respect of the second aspect of the invention.
In another preferred example, the product is selected from the group：Lithium ion battery, electrochromic device.
It should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment)
It can be combined with each other between each technical characteristic of body description, to form a new or preferred technical solution.As space is limited, exist
This no longer tires out one by one states.
Description of the drawings
The fast lithium ion solid electrolyte materials of Fig. 1 are being saturated processing procedure schematic diagram in guest materials containing lithium.
The fast lithium ion solid electrolyte materials of Fig. 2 inner particle surface and grain boundary area schematic diagram before treatment.
The fast lithium ion solid electrolyte materials of Fig. 3 inner particle surface and grain boundary area schematic diagram after treatment.Position in figure
Lithium ion is represented in the blue bead of grain boundaries.
Li in Fig. 4 embodiments 11.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid electrolyte glass ceramics are satisfied at 80 DEG C
And LiNO3The AC impedance figure that middle processing compares before and after 7 days.Li in Fig. 5 embodiments 21.52Al0.5Ge1.5P3O12.01(LAGP-
0.01) solid electrolyte glass ceramics are saturated at 80 DEG C handled 5 days in LiCl before and after the AC impedance figure that compares.
Li in Fig. 6 embodiments 31.5Al0.5Ge1.5P3O12(LAGP-0) solid electrolyte glass ceramics are saturated Li at 70 DEG C2SO4
The AC impedance figure that middle processing compares before and after 5 days.
Li in Fig. 7 embodiments 47La3Zr2O12(LLZ) solid electrolyte glass ceramics are saturated in LiCl at 100 DEG C and handle 8 days
The AC impedance figure of front and back comparison.
LLTO (Li in Fig. 8 embodiments 70.33La0.56TiO3) solid electrolyte glass ceramics are saturated Li at 80 DEG C2SO4Middle place
The AC impedance figure that reason compares before and after 7 days.
Li in Fig. 9 embodiments 11.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid electrolyte glass ceramics are satisfied at 80 DEG C
And LiNO3Section SEM figure before middle processing 7 days.
Li in Figure 10 embodiments 11.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid electrolyte glass ceramics are at 80 DEG C
It is saturated LiNO3Section SEM figure after middle processing 7 days.
Specific implementation mode
The present inventor's in-depth study by long-term, it has unexpectedly been found that, lithium fast-ionic conductor material is soaked in containing lithium
In the solution of ion, the ionic conductivity of conductor material greatly improves unexpectedly.And the method is easy, is suitable for various differences
The lithium fast-ionic conductor of type.Based on above-mentioned discovery, inventor completes the present invention.
Term
Term " lithium fast-ionic conductor material " refer to material at use temperature lithium ion conductivity have quite or close to
Fused salt or a kind of solid matter that liquid electrolyte ionic conductivity is horizontal, Conductance activation energy is less than 0.5eV.
The method for improving the fast ionic conductivity of lithium
The present invention provides it is a kind of improve lithium fast-ionic conductor conductivity method, the method includes：
(1) a lithium fast-ionic conductor material is provided；
(2) solution containing lithium ion is provided, wherein by lithium fast-ionic conductor material submergence；
(3) by the material and the solution heat preservation a period of time, take out material, obtain ionic conductivity raising lithium from
Sub- conductor material.
The present invention to fast Lithium Ionic Conducting Materials without particular/special requirement, can be used prepared by different modes it is different types of
Lithium fast-ionic conductor, but the fast ion conducting material cannot occur chemical reaction with the substance in solution and fail.Preferably
Several lithium fast-ionic conductors are selected from the group：LiTi2(PO4)3Based solid electrolyte, LiGe2(PO4)3Based solid electrolyte, garnet
Based solid electrolyte.
To lithium-containing solution, without particular/special requirement, LiNO can be used in the present invention3、LiCl、Li2SO4、CH3COOLi etc. is readily soluble to be contained
Lithium substance is made into.Preferably, lithium-containing solution used is saturation lithium salt solution.
To the heat treatment environment in insulating process, without particular/special requirement, constant temperature oven heating, hydro-thermal/oil bath can be used in the present invention
The heat treatment modes such as heating, hydrothermal reaction kettle heating.In another preferred example, the holding temperature is 60-100 DEG C, described
Soaking time be 3-10 days.
The ionic conductivity of lithium fast-ionic conductor can be improved in the processing method, can it is more untreated before improve >=30%, compared with
It is goodly >=40%, is more preferably >=50%.In another preferred example, the method treated lithium fast-ionic conductor material from
>=100% is improved before electron conductivity is more untreated.
A kind of preferred processing mode of the present invention is as shown in Fig. 1, fast Lithium Ionic Conducting Materials are placed in fill it is molten containing lithium
In the container of liquid, a period of time is then handled under certain thermal environment, so that lithium ion is entered material of main part using thermal diffusion
Particle surface and grain boundary area submerge front and back 3 institute of host material particles surface and grain boundary area schematic diagram such as attached drawing 2 and attached drawing
Show.
The main innovation point of the present invention is：
1. providing a kind of method improving lithium fast-ionic conductor material electric conductivity, the method is suitable for nearly all
Lithium fast-ionic conductor, such as LAGP, LLZ and LLTO solid electrolyte material.
2. raising bulk conductivity rate, grain boundary conductivities and total conductivity that the present invention can be by a relatively large margin, and operating method
Simply.After processing, the grain boundary conductivities of material are improved, and then improve total ionic conductance performance of ion conductor, compared to processing
The ionic conductivity of preceding solid electrolyte is significantly improved.
3. the raw material of the method for the present invention is easy to get, any soluble lithium salt solution can be used and handled, it can be achieved that extensive
Production.
4. products application is in extensive range, service life is long, broad application temperature range.
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In the following examples, the experimental methods for specific conditions are not specified, usually according to conventional strip
Part, or according to the normal condition proposed by manufacturer.Unless otherwise stated, otherwise percentage and number are calculated by weight.
Embodiment 1
Using gold as blocking electrode, Li is tested1.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid electrolyte block material
The room temperature AC impedance of material, test frequency are 1MHz~0.1Hz.Be obtained by calculation sample ionic conductivity be 2.27 ×
10-4S/cm.Configure the LiNO of saturation3LAGP-0.025 solid electrolyte glass ceramics samples are dipped in the solution by solution.Such as
Shown in Fig. 1, sample is placed in together with solution in 80 DEG C of environment and keeps the temperature 7 days.It cleaning sample and dries after the completion, obtains final samples
Product.Using gold as blocking electrode, ac impedance measurement is carried out, test frequency is 1MHz~0.1Hz.Sample is obtained by calculation
Ionic conductivity is 5.39 × 10-4S/cm.Fig. 4 is Li in embodiment 11.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid
Electrolyte glass ceramics are saturated LiNO at 80 DEG C3The AC impedance figure that middle processing compares before and after 7 days.The results show that material processing
Preceding total conductivity 2.27 × 10-4S/cm, 5.39 × 10 after processing-4S/cm。
Fig. 9 is Li in embodiment 11.55Al0.5Ge1.5P3O12.025(LAGP-0.025) solid electrolyte glass ceramics are at 80 DEG C
It is saturated LiNO3Section SEM figure before middle processing 7 days.Figure 10 is Li in embodiment 11.55Al0.5Ge1.5P3O12.025(LAGP-
0.025) solid electrolyte glass ceramics are saturated LiNO at 80 DEG C3Section SEM figure after middle processing 7 days.It can be seen from the figure that
Before and after the processing, the grain boundary area of material changes, and illustrates that lithium ion enters grain boundary area.
Embodiment 2
Using gold as blocking electrode, Li is tested1.52Al0.5Ge1.5P3O12.01(LAGP-0.01) solid electrolyte block materials
Room temperature AC impedance, test frequency be 1MHz~0.1Hz.The ionic conductivity that sample is obtained by calculation is 1.79 × 10- 4S/cm.LAGP-0.01 solid electrolyte glass ceramics samples, are placed in the water for filling the solution by the LiCl solution for configuring saturation
In thermal response kettle.Reaction kettle is placed in 80 DEG C of environment and keeps the temperature 5 days.It cleaning sample and dries after the completion, obtains final sample.With
Gold is used as blocking electrode, carries out ac impedance measurement, and test frequency is 1MHz~0.1Hz.The ion of sample is obtained by calculation
Conductivity is 2.52 × 10-4S/cm.Fig. 5 is Li in embodiment 21.52Al0.5Ge1.5P3O12.01(LAGP-0.01) solid electrolyte
Glass ceramics is saturated at 80 DEG C handled 5 days in LiCl before and after the AC impedance figure that compares.The results show that total conductance before material processing
Rate 1.79 × 10-4S/cm, 2.52 × 10 after processing-4S/cm。
Embodiment 3
Using gold as blocking electrode, Li is tested1.5Al0.5Ge1.5P3O12(LAGP-0) room temperature of solid electrolyte block materials
AC impedance, test frequency are 1MHz~0.1Hz.The ionic conductivity that sample is obtained by calculation is 8.4 × 10-5S/cm.Match
Set the Li of saturation2SO4LAGP-0 solid electrolyte glass ceramics samples are dipped in the solution by solution.Sample is set together with solution
5 days are kept the temperature in 70 DEG C of environment.It cleaning sample and dries after the completion, obtains final sample.Using gold as blocking electrode, handed over
Flow impedance is tested, and test frequency is 1MHz~0.1Hz.The ionic conductivity that sample is obtained by calculation is 1.3 × 10-4S/cm。
Fig. 6 is Li in embodiment 31.5Al0.5Ge1.5P3O12(LAGP-0) solid electrolyte glass ceramics are saturated Li at 70 DEG C2SO4Middle processing
The AC impedance figure compared before and after 5 days.The results show that total conductivity 8.4 × 10 before material processing-5S/cm, 1.3 after processing ×
10-4S/cm。
Embodiment 4
Using gold as blocking electrode, the fast lithium ion conductor LLZ (Li of test garnet structure7La3Zr2O12) solid electrolyte
The AC impedance of block materials, test frequency are 1MHz~0.1Hz.Be obtained by calculation sample ionic conductivity be 2.2 ×
10-4S/cm.Configure saturation LiCl solution, LLZ solid electrolyte glass ceramics samples are placed in fill the solution hydro-thermal it is anti-
It answers in kettle.Reaction kettle is placed in 100 DEG C of environment and keeps the temperature 8 days.It cleaning sample and dries after the completion, obtains final sample.With gold
As blocking electrode, ac impedance measurement is carried out, test frequency is 1MHz~0.1Hz.The ion-conductance of sample is obtained by calculation
Conductance is 3.1 × 10-4S/cm.Fig. 7 is Li in embodiment 47La3Zr2O12(LLZ) solid electrolyte glass ceramics are satisfied at 100 DEG C
With handled 8 days in LiCl before and after the AC impedance figure that compares.The results show that total conductivity 2.2 × 10 before material processing-4S/cm,
3.1 × 10 after processing-4S/cm。
Embodiment 5
Using gold as blocking electrode, the fast lithium ion conductor LLZ (Li of test garnet structure7La3Zr2O12) solid electrolyte
The AC impedance of block materials, test frequency are 1MHz~0.1Hz.Be obtained by calculation sample ionic conductivity be 2.2 ×
10-4S/cm.Configure the Li of saturation2SO4LLZ solid electrolyte glass ceramics samples are dipped in the solution by solution.Sample is connected
It is placed in 70 DEG C of environment with solution and keeps the temperature 4 days.It cleaning sample and dries after the completion, obtains final sample.Using gold as obstruction electricity
Pole, carries out ac impedance measurement, and test frequency is 1MHz~0.1Hz.Be obtained by calculation sample ionic conductivity be 2.7 ×
10-4S/cm。
Embodiment 6
Using gold as blocking electrode, the fast lithium ion conductor LLZ (Li of test garnet structure7La3Zr2O12) solid electrolyte
The AC impedance of block materials, test frequency are 1MHz~0.1Hz.Be obtained by calculation sample ionic conductivity be 2.2 ×
10-4S/cm.Configure the CH of saturation3LLZ solid electrolyte glass ceramics samples are placed in the water for filling the solution by COOLi solution
In thermal response kettle.Reaction kettle is placed in 60 DEG C of environment and keeps the temperature 3 days.It cleaning sample and dries after the completion, obtains final sample.With
Gold is used as blocking electrode, carries out ac impedance measurement, and test frequency is 1MHz~0.1Hz.The ion of sample is obtained by calculation
Conductivity is 2.5 × 10-4S/cm。
Embodiment 7
Using gold as blocking electrode, test perovskite structure lithium fast-ionic conductor LLTO (Li0.33La0.56TiO3) solid electricity
The AC impedance of matter glass ceramics block materials is solved, test frequency is 1MHz~0.1Hz.The ion-conductance of sample is obtained by calculation
Conductance is 1.2 × 10-3S/cm.Configure the Li of saturation2SO4It is molten to be dipped in this by solution for LLTO solid electrolyte glass ceramics samples
In liquid.Sample is placed in together with solution in 80 DEG C of environment and keeps the temperature 7 days.It cleaning sample and dries after the completion, obtains final sample.With
Gold is used as blocking electrode, carries out ac impedance measurement, and test frequency is 1MHz~0.1Hz.The ion of sample is obtained by calculation
Conductivity is 1.5 × 10-3S/cm.Fig. 8 is LLTO (Li in embodiment 70.33La0.56TiO3) solid electrolyte glass ceramics are 80
DEG C saturation Li2SO4The AC impedance figure that middle processing compares before and after 7 days.The results show that total conductivity 1.2 × 10 before material processing- 3S/cm, 1.5 × 10 after processing-3S/cm。
Embodiment 8
Using gold as blocking electrode, test perovskite structure lithium fast-ionic conductor LLTO (Li0.33La0.56TiO3) solid electricity
The AC impedance of matter glass ceramics block materials is solved, test frequency is 1MHz~0.1Hz.The ion-conductance of sample is obtained by calculation
Conductance is 1.2 × 10-3S/cm.Configure the LiNO of saturation3LLTO solid electrolyte glass ceramics samples are placed in and fill this by solution
In the hydrothermal reaction kettle of solution.Reaction kettle is placed in 80 DEG C of environment and keeps the temperature 7 days.It cleaning sample and dries, is obtained most after the completion
Whole sample.Using gold as blocking electrode, ac impedance measurement is carried out, test frequency is 1MHz~0.1Hz.Sample is obtained by calculation
The ionic conductivity of product is 1.8 × 10-3S/cm。
All references mentioned in the present invention is incorporated herein by reference, independent just as each document
It is incorporated as with reference to such.In addition, it should also be understood that, after reading the above teachings of the present invention, those skilled in the art can
To be made various changes or modifications to the present invention, such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
Claims (6)
1. a kind of method improving lithium fast-ionic conductor material total conductivity, which is characterized in that including：
(1) a lithium fast-ionic conductor material is provided；
(2) solution containing lithium ion is provided, wherein by lithium fast-ionic conductor material submergence；
(3) material and the solution are kept the temperature, takes out material, obtain the lithium ion conductor material of ionic conductivity raising
Material, and the holding temperature is 60-100 DEG C, the soaking time is 3-10 days.
2. the method as described in claim 1, which is characterized in that the solution containing lithium ion is saturation lithium salt solution.
3. method as claimed in claim 2, which is characterized in that the lithium salts is selected from the group：LiNO3、LiCl、Li2SO4、
CH3COOLi, or combinations thereof.
4. the method as described in claim 1, which is characterized in that the lithium fast-ionic conductor is selected from the group：LiTi2(PO4)3
Based solid electrolyte, LiGe2(PO4)3Based solid electrolyte, garnet-base solid electrolyte.
5. the method as described in claim 1, which is characterized in that the ion of the method treated lithium fast-ionic conductor material
>=30% is improved before conductivity is more untreated.
6. the method as described in claim 1, which is characterized in that the ion of the method treated lithium fast-ionic conductor material
>=40% is improved before conductivity is more untreated.
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| CN109687019A (en) * | 2019-01-22 | 2019-04-26 | 广东天劲新能源科技股份有限公司 | A method of improving oxide solid electrolyte electric conductivity |
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| CN103337606A (en) * | 2013-07-02 | 2013-10-02 | 山东润峰集团新能源科技有限公司 | Method for improving performance of lithium power battery |
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