CN110247105A - A kind of preparation method improving solid electrolyte consistency - Google Patents
A kind of preparation method improving solid electrolyte consistency Download PDFInfo
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- CN110247105A CN110247105A CN201810189069.1A CN201810189069A CN110247105A CN 110247105 A CN110247105 A CN 110247105A CN 201810189069 A CN201810189069 A CN 201810189069A CN 110247105 A CN110247105 A CN 110247105A
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M10/0561—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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/0071—Oxides
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
Enhance the preparation process of lithium ion conductivity the present invention relates to a kind of raising solid electrolyte consistency, wherein the main component of additive is lithium aluminosilicate, content 0.5%-4%wt.Its preparation process are as follows: lithium aluminosilicate is added to the tantalum elements doped lithium lanthanum zirconium oxygen of pre-burning, ball milling, for addition binder again after ball milling, tabletting, low-temperature sintering removes no-bonder, and burning is buried in female powder and obtains final electrolyte.Obtained electrolyte sheet consistency is up to 91.5%, and lithium ion conductivity is at normal temperature up to 5.14 × 10‑4S/cm(298K)。
Description
Technical field
The invention mainly relates to a kind of all-solid lithium-ion battery technical fields, specifically, the present invention relates to one kind to mention
The consistency of high solid electrolyte and then the preparation method for improving ionic conductivity.
Background technique
Compared with current liquid lithium ionic cell, all-solid-state battery have safety, energy density are high, have extended cycle life,
The features such as operating temperature range is wide is the main power source of Future New Energy Source automobile.Wherein solid electrolyte is that realization is all solid state
The key of battery, solid electrolyte include using PEO as the solid polyelectrolyte of representative, inorganic solid electrolyte and polymerization
The composite solid electrolyte of the inorganic combination of object-, and use the all-solid lithium-ion battery of inorganic solid electrolyte that there is thermostabilization
Property high, nonflammable explosion, the advantages such as environmental-friendly, cyclical stability is high, strong shock resistance, obtained extensive concern.
Inorganic solid electrolyte can also play the advantage of oneself single ionic conduction and high stability simultaneously, apply in lithium-sulfur cell, lithium
It is the Main way of the following electrolyte development on the new type lithium ion batteries such as air cell.Therefore inorganic solid electrolyte is improved
Consistency, so that enhancing lithium ion conductivity, reducing the interface impedance of solid electrolyte and positive and negative anodes is to have important reality
Border meaning.The method that inorganic solid electrolyte tantalum elements doped lithium lanthanum zirconium oxygen consistency is improved by addition lithium aluminosilicate in the present invention,
It is had not been reported in many documents.
Summary of the invention
For state of the art, the present invention, which develops, a kind of improves solid electrolyte tantalum elements doped lithium lanthanum zirconium oxygen consistency
Method passes through the tantalum elements doped lithium lanthanum zirconium oxygen (Li in pre-burning6.4La3Zr1.4Ta0.6O12, LLZTO) in be added lithium aluminosilicate
(LiAlSiO4, LAS) and consistency can be increased substantially to improve lithium ion conductivity.The effect that this method improves consistency is bright
Aobvious, preparation process is simple.
Technical solution provided by the invention is as follows:
The present invention improves consistency by the way that lithium aluminosilicate is added in tantalum elements doped lithium lanthanum zirconium oxygen, and wherein the amount of lithium aluminosilicate is
0.5%-4%wt.；
What the present invention used prepares in solid electrolyte tantalum elements doped lithium lanthanum zirconium oxygen, the doping 0.6mol/mol of tantalum, specifically
Chemical formula be Li6.4La3Zr1.4Ta0.6O12.
The preparation method for the solid electrolyte that the present invention uses is traditional solid-phase ball milling method.
Preparation process of the invention is as follows: lithium aluminosilicate is prepared first, the specific process is as follows: accurate according to stoichiometric ratio
Aluminium oxide, silica, lithium carbonate are weighed, then ethylene glycol ball milling is added in mixing, roasting obtains lithium aluminosilicate after drying；Its
Secondary to prepare lithium aluminosilicate-tantalum elements doped lithium lanthanum zirconium oxygen, concrete operations are as follows: stoichiometrically precise lithium carbonate, five is added
Two tantalums, zirconium oxide, lanthana are aoxidized, ethylene glycol ball milling is added, 900 DEG C of roasting 10h, obtained powder mull add after drying
Enter lithium aluminosilicate powder ball milling again, binder PVB is added after drying, tabletting, roasting 8h removes glue at 650 DEG C, so as female in being added
Powder buries burning under different roasting systems and obtains electrolyte sheet.
The loss of the lithium in roasting process is reduced in the present invention, wherein the amount excess 10%wt. of lithium carbonate.
Ball-milling Time is 20h in the preparation process of lithium aluminosilicate in the present invention, and ball milling revolves revolving speed as 300rpm；Roasting
Condition are as follows: roast 10h at 900 DEG C；
The amount that lithium aluminosilicate is added in the present invention is 0.5%-4%wt..
Lithium aluminosilicate-tantalum elements doped lithium lanthanum zirconium oxygen ball milling condition is prepared in the present invention are as follows: Ball-milling Time 12-20h, ball milling
Revolution revolving speed is 200-300rpm, and the diameter of abrading-ball is 4mm.
It is PVB, content 1%-4%wt. that binder is added in the present invention
The technique of tabletting in the present invention are as follows: tablet press machine pressure is 20-30MPa, and the tabletting time is 1-5min；
It is to be sintered under different temperatures with different time that system is roasted in the present invention, and the preferred system that roasts is 1210 DEG C of sintering
15h or 1150 DEG C of sintering 15h, 10h, 5 or 1100 DEG C of sintering 15h, 10h.
The relative density for the tantalum elements doped lithium lanthanum zirconium oxygen that the lithium aluminosilicate is added are as follows: 91.5%.
The lithium ion conductivity for the tantalum elements doped lithium lanthanum zirconium oxygen that the lithium aluminosilicate is added are as follows: 5.14 × 10-4S/cm
(298K)。
The beneficial effects of the present invention are:
One, the consistency of tantalum elements doped lithium lanthanum zirconium oxygen can be improved by adding lithium aluminosilicate, thus greatly improves its ion
Conductivity；
Two, this method is simple and easy to get, and raw material is cheap, is suitable for large-scale production.The tantalum that the lithium aluminosilicate is added is mixed
The relative density of miscellaneous lithium lanthanum zirconium oxygen are as follows: 91.5%, it is relatively compact compared to the tantalum elements doped lithium lanthanum zirconium oxygen that lithium aluminosilicate is not added
Degree improves 19.6%.The lithium ion conductivity for the tantalum elements doped lithium lanthanum zirconium oxygen that the lithium aluminosilicate is added are as follows: 5.14 × 10-4S/cm
(298K)。
Figure of description
Fig. 1 is shown as lithium aluminosilicate and front and back tantalum elements doped lithium lanthanum zirconium oxygen X-ray diffractogram (embodiment one) is added.
Fig. 2 is shown as lithium aluminosilicate and front and back tantalum elements doped lithium lanthanum zirconium oxygen ac impedance spectroscopy (298K) is added.(embodiment three)
Fig. 3 is shown as lithium aluminosilicate and front and back tantalum elements doped lithium lanthanum zirconium oxygen conductivity is added with temperature curve and activation energy figure.It is (real
Apply example three)
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..Without departing substantially from spirit of that invention
In the case where essence, to the modifications or substitutions that the method for the present invention, step or condition are done, protection model of the invention is belonged to
It encloses.
Embodiment one: the preparation process of lithium aluminosilicate is as follows: according to stoichiometric ratio precise aluminium oxide, titanium dioxide
Ethylene glycol is added with 300rpm ball milling 20h in silicon, lithium carbonate, and roasting obtains lithium aluminosilicate after 65 DEG C of drying.
The preparation of lithium aluminosilicate addition tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet: stoichiometrically precise carbonic acid is added
Lithium, tantalum pentoxide, zirconium oxide, lanthana are added ethylene glycol with 300rpm ball milling 10h, roast for 900 DEG C after 65 DEG C of drying
0.5%wt. lithium aluminosilicate ball milling, Ball-milling Time 20h, revolution speed 300rpm, 65 DEG C of bakings are added in 10h, obtained powder
Binder 2.7%PVB ball milling, 30Mpa lower sheeting 2min after drying, before obtaining the electrolyte that diameter is 12.7mm are added after dry
Body piece is driven, roasting 8h removes glue at 650 DEG C, and then addition female powder roasts 15h at 1210 DEG C and obtains electrolyte sheet.
Crystal phase structure is surveyed by X-ray diffraction after obtained electrolyte sheet grinding, as shown in Figure 1.
Embodiment two: the preparation process of lithium aluminosilicate is as follows: according to stoichiometric ratio precise aluminium oxide, titanium dioxide
Ethylene glycol is added with revolution speed 300rpm ball milling 20h in silicon, lithium carbonate, and roasting obtains lithium aluminosilicate after 65 DEG C of drying.
The preparation of lithium aluminosilicate addition tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet: stoichiometrically precise carbonic acid is added
Lithium, tantalum pentoxide, zirconium oxide, lanthana are added ethylene glycol with 300rpm ball milling 10h, roast for 900 DEG C after 65 DEG C of drying
1%wt. lithium aluminosilicate ball milling, Ball-milling Time 20h, revolution speed 300rpm, 65 DEG C of drying are added in 10h, obtained powder
Binder 2.7%PVB ball milling is added afterwards, 30Mpa lower sheeting 2min after drying obtains the electrolyte precursor that diameter is 12.7mm
Piece, roasting 8h removes glue at 650 DEG C, female powder is then added roasts 10h at 1150 DEG C and obtain electrolyte sheet.
Obtained electrolyte sheet is polished by sand paper, measures relative density by Archimedes principle, as shown in table 1.
Embodiment three: the preparation process of lithium aluminosilicate is as follows: according to stoichiometric ratio precise aluminium oxide, titanium dioxide
Ethylene glycol is added with 300rpm ball milling 20h in silicon, lithium carbonate, and roasting obtains lithium aluminosilicate after 65 DEG C of drying.
The preparation of lithium aluminosilicate addition tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet: stoichiometrically precise carbonic acid is added
Tantalum, tantalum pentoxide, zirconium oxide, lanthana are added ethylene glycol with 300rpm ball milling 10h, roast for 900 DEG C after 65 DEG C of drying
4%wt. lithium aluminosilicate ball milling, Ball-milling Time 20h, revolution speed 300rpm, 65 DEG C of drying are added in 10h, obtained powder
Binder 2.7%PVB ball milling is added afterwards, 30Mpa lower sheeting 2min after drying obtains the electrolyte precursor that diameter is 12.7mm
Piece, roasting 8h removes glue at 650 DEG C, female powder is then added roasts 10h at 1100 DEG C and obtain electrolyte sheet.
For obtained electrolyte sheet after sand paper is polished, two sides applies silver paste, then 125 DEG C of drying 10min are roasted at 850 DEG C
Burn 15min, obtained electrolyte sheet be assembled into stainless steel/electrolyte sheet/stainless steel and blocks battery, 25-100 DEG C of test it
Between AC impedance, the frequency range of AC impedance is 10Hz-1MHz.Every time before acquisition data, at least balanced in test temperature
30min.The activation energy curve for obtaining ionic conductivity by the ac impedance spectroscopy of acquisition and varying with temperature.AC impedance
Map is as shown in Fig. 2, ionic conductivity and activation energy curve are as shown in Figure 3.
Example IV: the preparation of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet: be added stoichiometrically precise lithium carbonate,
Tantalum pentoxide, zirconium oxide, lanthana, addition ethylene glycol is with 300rpm ball milling 10h, 900 DEG C of roasting 10h after 65 DEG C of drying,
Binder 2.7%PVB ball milling is added in obtained powder, and 30Mpa lower sheeting 2min after drying obtains the electricity that diameter is 12.7mm
Matter presoma piece is solved, roasting 8h removes glue at 650 DEG C, and then addition female powder roasts 10h at 1100 DEG C and obtains electrolyte sheet.
For obtained electrolyte sheet after sand paper is polished, two sides applies silver paste, then 125 DEG C of drying 10min are roasted at 850 DEG C
15min is burnt, obtained electrolyte sheet is assembled into stainless steel/electrolyte sheet/stainless steel and blocks battery, test is at room temperature (25 DEG C)
Between AC impedance.
Embodiment five: the preparation process of lithium aluminosilicate is as follows: according to stoichiometric ratio precise aluminium oxide, titanium dioxide
Ethylene glycol is added with 300rpm ball milling 10h in silicon, lithium carbonate, and roasting obtains lithium aluminosilicate after 65 DEG C of drying.
The preparation of lithium aluminosilicate addition tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet: stoichiometrically precise carbonic acid is added
Lithium, tantalum pentoxide, zirconium oxide, lanthana are added ethylene glycol with 300rpm ball milling 10h, roast for 900 DEG C after 65 DEG C of drying
5%wt. lithium aluminosilicate ball milling, Ball-milling Time 20h, revolution speed 300rpm, 65 DEG C of drying are added in 10h, obtained powder
Binder 2.7%PVB ball milling is added afterwards, 30Mpa lower sheeting 2min after drying obtains the electrolyte precursor that diameter is 12.7mm
Piece, roasting 8h removes glue at 650 DEG C, and so 10h is roasted at 1100 DEG C as female powder is added obtains electrolyte sheet.
For obtained electrolyte sheet after sand paper is polished, two sides applies silver paste, then 125 DEG C of drying 10min are roasted at 850 DEG C
15min is burnt, obtained electrolyte sheet is assembled into stainless steel/electrolyte sheet/stainless steel and blocks battery, test is at room temperature (25 DEG C)
Between AC impedance.
Embodiment six: the present embodiment has been investigated lithium aluminosilicate and has been added in the preparation process of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet
Influence of the ball milling condition to (25 DEG C) ionic conductivity at room temperature, other conditions are as described in embodiment three, and the results are shown in Table 2.
Embodiment seven: the present embodiment has been investigated lithium aluminosilicate and has been added in the preparation process of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet
Influence of the content of binder to (25 DEG C) ionic conductivity at room temperature, other conditions are as described in embodiment three, as a result such as table 3
It is shown.
Embodiment eight: the present embodiment has been investigated lithium aluminosilicate and has been added in the preparation process of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet
Influence of the tabletting conditions to (25 DEG C) ionic conductivity at room temperature, other conditions are as described in embodiment three, and the results are shown in Table 4.
Embodiment nine: the present embodiment has been investigated lithium aluminosilicate and has been added in the preparation process of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte sheet
Influence of the sintering condition to (25 DEG C) ionic conductivity at room temperature, other conditions are as described in embodiment one, and the results are shown in Table 5.
Front and back tantalum elements doped lithium lanthanum zirconium oxygen relative density variation table is added in 1 lithium aluminosilicate of table, and (theoretical density presses 5.5g/cm3
It calculates)
| Sample ID | Sintering schedule | Relative density |
| LLZTO | 1150 DEG C, 10h | 73.6% |
| LLZTO+1%LAS | 1150 DEG C, 10h | 91.5% |
Influence of 2 ball milling condition of table to (25 DEG C) ionic conductivity at room temperature
Influence of 3 content of binder of table to (25 DEG C) ionic conductivity at room temperature
| Content of binder (wt.%) | Lithium ion conductivity (S/cm) |
| 1 | 4.56×10-4 |
| 2.7 | 5.14×10-4 |
| 3 | 4.26×10-4 |
| 4 | 4.12×10-4 |
Influence of 4 tabletting conditions of table to (25 DEG C) ionic conductivity at room temperature
| Tableting pressure (MPa) | The tabletting time (min) | Lithium ion conductivity (S/cm) |
| 20 | 1 | 3.56×10-4 |
| 2 | 4.12×10-4 | |
| 5 | 3.78×10-4 | |
| 25 | 1 | 3.45×10-4 |
| 2 | 3.98×10-4 | |
| 5 | 3.65×10-4 | |
| 30 | 1 | 4.35×10-4 |
| 2 | 5.14×10-4 | |
| 5 | 4.12×10-4 |
Influence of 5 sintering condition of table to (25 DEG C) ionic conductivity at room temperature
| Sintering temperature (DEG C) | Sintering time (h) | Lithium ion conductivity (S/cm) |
| 1210 | 15 | 3.81×10-4 |
| 1150 | 15 | 3.65×10-4 |
| 1150 | 10 | 3.13×10-4 |
| 1150 | 5 | 4.37×10-4 |
| 1100 | 15 | 4.01×10-4 |
| 1100 | 10 | 5.14×10-4 |
The test result of embodiment one to five:
The present invention carries out X-ray diffraction test to the electrolyte sheet that embodiment one obtains, and compares with standard card, as a result table
It is bright, extraordinary cubic structure is obtained by the electrolyte sheet that this method obtains cubic structure.
The present invention carries out consistency test to the electrolyte sheet that embodiment two obtains, the results showed that, after lithium aluminosilicate is added,
The consistency of electrolyte is greatly improved, and relative density is increased to 91.5% from 73.6%.
The present invention carries out the test of lithium ion conductivity and activation energy to the electrolyte sheet that embodiment three obtains, as a result table
It is bright, after lithium aluminosilicate is added, the ionic conductivity of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte at room temperature (298K) up to 5.14 × 10- 4S/cm, activation energy 0.37eV illustrate superior lithium ion electrical conductance.
The present invention carries out the test of lithium ion conductivity to the electrolyte sheet that example IV obtains, the results showed that, it is undoped
The ionic conductivity of the tantalum elements doped lithium lanthanum zirconium oxygen electrolyte of lithium aluminosilicate at room temperature (298K) up to 2.98 × 10-4S/cm is said
The ionic conductivity that tantalum elements doped lithium lanthanum zirconium oxygen electrolyte can be improved is added in bright suitable lithium aluminosilicate.
The present invention carries out the test of lithium ion conductivity to the electrolyte sheet that embodiment five obtains, the results showed that, silicon is added
After sour aluminium lithium, the ionic conductivity of tantalum elements doped lithium lanthanum zirconium oxygen electrolyte only has 5.26 × 10 at room temperature (298K)-5S/cm, explanation
Excessive lithium aluminosilicate can reduce lithium ion conductivity.Obviously, above-described embodiment is only intended to clearly illustrate done citing,
And it does not limit the embodiments.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other various forms of variations or variation.Here without exhaustion.And the obvious variation thus amplified out
Or it changes still within the protection scope of the invention.
Claims (9)
1. a kind of method for improving tantalum elements doped lithium lanthanum zirconium oxygen solid electrolyte consistency, which is characterized in that in tantalum elements doped lithium lanthanum zirconium
Lithium aluminosilicate is added in oxygen.
2. a kind of method described in claim 1 for improving tantalum elements doped lithium lanthanum zirconium oxygen solid electrolyte consistency, which is characterized in that
The amount for adding lithium aluminosilicate is 0.5%-4wt.%.
3. a kind of preparation process described in claim 1 for preparing high-compactness inorganic solid electrolyte, which is characterized in that in tantalum
Lithium aluminosilicate well prepared in advance is added after 900 DEG C of presoma of elements doped lithium lanthanum zirconium oxygen roastings, ball milling is added binder tabletting, removes
Roasting obtains solid electrolyte sheet after glue.
4. lithium aluminosilicate preparation process as claimed in claim 3 be stoichiometrically precise aluminium oxide, silica,
Lithium carbonate, ball milling, revolve revolving speed 300rpm, Ball-milling Time 20h, and 900 DEG C of roasting 10h obtain lithium aluminosilicate powder after drying.
5. lithium aluminosilicate as claimed in claim 3 is added to tantalum elements doped lithium lanthanum zirconium oxygen preparation process, which is characterized in that when ball milling
Between be 12-20h, revolution revolving speed be 200-300rpm.
6. lithium aluminosilicate as claimed in claim 3 is added to tantalum elements doped lithium lanthanum zirconium oxygen preparation process, which is characterized in that use
Binder is PVB, content 1%-4%wt..
7. lithium aluminosilicate as claimed in claim 3 is added to tantalum elements doped lithium lanthanum zirconium oxygen preparation process, which is characterized in that tabletting
Pressure is 20-30MPa, and the tabletting time is 1-5min.
8. lithium aluminosilicate as claimed in claim 3 is added to tantalum elements doped lithium lanthanum zirconium oxygen preparation process, which is characterized in that roasting electricity
Female powder is added when solving matter piece and buries burning, sintering schedule is 10h or 1150 DEG C of 1210 DEG C of sintering 15h or 1150 DEG C of sintering sintering
15h or 1100 DEG C of sintering 10h of 10h or 1150 DEG C of 5h or 1100 DEG C of sintering of sintering.
9. lithium aluminosilicate as claimed in claim 3 is added to tantalum elements doped lithium lanthanum zirconium oxygen preparation process, which is characterized in that preferred
The best sintering schedule of electrolyte sheet is 1100 DEG C of sintering 10h.
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| CN111116198A (en) * | 2019-12-16 | 2020-05-08 | 广东东邦科技有限公司 | LLZO inorganic oxide solid electrolyte doped with solid solution and preparation method thereof |
| CN111952661A (en) * | 2020-08-14 | 2020-11-17 | 横店集团东磁股份有限公司 | Solid-state lithium ion battery and preparation method thereof |
| CN113871704A (en) * | 2021-09-28 | 2021-12-31 | 吉林大学 | Doped Li4SiO4-LiAlO2Method for preparing solid electrolyte |
| CN114122509A (en) * | 2021-11-26 | 2022-03-01 | 澳门大学 | Ceramic oxide solid electrolyte and preparation method thereof |
| CN114349507A (en) * | 2021-12-31 | 2022-04-15 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for improving sintering relative density of lithium lanthanum zirconium oxygen ceramic wafer |
| CN114725493A (en) * | 2022-04-11 | 2022-07-08 | 哈尔滨工业大学 | High-performance sulfide solid electrolyte sheet and preparation method and application thereof |
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| CN114122509A (en) * | 2021-11-26 | 2022-03-01 | 澳门大学 | Ceramic oxide solid electrolyte and preparation method thereof |
| CN114349507A (en) * | 2021-12-31 | 2022-04-15 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for improving sintering relative density of lithium lanthanum zirconium oxygen ceramic wafer |
| CN114725493A (en) * | 2022-04-11 | 2022-07-08 | 哈尔滨工业大学 | High-performance sulfide solid electrolyte sheet and preparation method and application thereof |
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