CN103682420A - High voltage lithium ion battery functional electrolyte and preparation method and application - Google Patents
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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
- H01M10/0564—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
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- 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
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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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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Abstract
The invention belongs to the field of lithium ion batteries, and discloses a high voltage lithium ion battery functional electrolyte and a preparation method and application. The functional electrolyte is obtained by adding a function additive into a common electrolyte, wherein the added function additive is equal to 1-5% of the common electrolyte by mass; the common electrolyte comprises a cyclic carbonate solvent, a linear carbonate solvent, and conductive lithium salts; the function additive is tris(trimethylsilyl) phosphate. According to the function additive adopted by the high voltage lithium ion battery functional electrolyte, a layer of relatively thin, stable and protective film is generated on the surface of an anode in a 3-4.9 V charge-discharge system; on the one hand, oxygenolysis of the electrolyte under high voltage is restrained, on the other hand, anode materials are protected. Therefore, cycle performance and safety performance of the high voltage lithium ion battery are improved.
Description
Technical field
The invention belongs to lithium ion battery field, particularly a kind of high-voltage lithium ion batteries function electrolyte and preparation method and application.
Background technology
At present, business has LiMn2O4, cobalt acid lithium, LiFePO4, ternary material with the positive electrode of lithium ion battery, and these are several, charge cutoff voltage is generally all no more than 4.2V, and along with scientific and technological progress and the development in market, the energy density that promotes lithium battery seems important and urgent day by day.Except the improvement of current material and battery production technology, high voltage (5V) positive electrode is one of more popular research direction, is mainly by promoting the depth of charge of positive electrode active materials, to realize the high-energy-density of battery.
Yet, when improving positive electrode voltage, the performances such as the charge and discharge cycles of battery are but declining, reason positive electrode is stable not on the one hand, be the matching problem of electrolyte on the other hand, can there is oxidation Decomposition on anodal surface in common electrolyte, the oxidative decomposition of electrolyte also can be impelled the destruction of positive electrode simultaneously under the high voltage of 5V.So, develop high voltage withstanding electrolyte and have great significance.
Summary of the invention
Primary and foremost purpose of the present invention is that the shortcoming that overcomes prior art, with not enough, provides a kind of high-voltage lithium ion batteries function electrolyte.
Another object of the present invention is to provide the preparation method of above-mentioned high-voltage lithium ion batteries function electrolyte.
A further object of the present invention is to provide the application of above-mentioned high-voltage lithium ion batteries function electrolyte.
Object of the present invention is achieved through the following technical solutions: a kind of high-voltage lithium ion batteries function electrolyte is that the functional additive that is equivalent to common electrolyte quality 1～5% in common electrolyte interpolation obtains; Described common electrolyte consists of cyclic carbonate ester solvent, linear carbonates solvent and electric conducting lithium salt; Described functional additive is three (trimethyl silane) phosphate;
Shown in the composition of described common electrolyte is preferably as follows: the mass ratio of cyclic carbonate ester solvent and linear carbonates solvent is (1:3)～(3:2); The final concentration of electric conducting lithium salt in common electrolyte is 0.8～1.2mol/L;
Described cyclic carbonate ester solvent is ethylene carbonate (EC);
Described linear carbonates solvent is at least one in dimethyl carbonate (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC) and methyl propyl carbonate (MPC);
Described electric conducting lithium salt is LiPF
6, LiBOB, LiSO
3cF
3, LiClO
4, LiAsF
6, Li(CF
3sO
2)
2n and LiC(CF
3sO
2)
3in at least one;
The preparation method of above-mentioned high-voltage lithium ion batteries function electrolyte, comprises the steps:
(1) by cyclic carbonate ester solvent and linear carbonates solvent, clarification, dewater, obtain mixed solvent; At ambient temperature, electric conducting lithium salt is added in the mixed solvent of cyclic carbonate and linear carbonates, stir, obtain common electrolyte;
(2) in the common electrolyte obtaining in step (1), add the functional additive that is equivalent to common electrolyte quality 1～5%, obtain high-voltage lithium ion batteries function electrolyte; Described functional additive is three (trimethyl silane) phosphate;
The mass ratio of the cyclic carbonate ester solvent described in step (1) and described linear carbonates solvent is (1:3)～(3:2);
Cyclic carbonate ester solvent described in step (1) is ethylene carbonate (EC);
Linear carbonates solvent described in step (1) is at least one in dimethyl carbonate (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC) and methyl propyl carbonate (MPC);
The final concentration of electric conducting lithium salt described in step (1) in common electrolyte is 0.8～1.2mol/L;
Electric conducting lithium salt described in step (1) is LiPF
6, LiBOB, LiSO
3cF
3, LiClO
4, LiAsF
6, Li(CF
3sO
2)
2n, LiC(CF
3sO
2)
3in at least one;
Clarification described in step (1), dewater preferably and to process by any one or at least two kinds in molecular sieve, activated carbon, calcium hydride, lithium hydride, anhydrous calcium oxide, calcium chloride, phosphorus pentoxide, alkali metal or alkaline-earth metal;
Molecular sieve described in step (1) can adopt
,
or
type;
Room temperature range described in step (1) is 25～40 ℃.
Described high-voltage lithium ion batteries function electrolyte is applied to manufacture lithium ion battery, and the battery obtaining has good charge-discharge performance.
The present invention has following advantage and effect with respect to prior art:
Functional additive the discharging and recharging in system at 3～4.9V that the present invention uses; contrast common electrolyte; can form the thinner more stable film with protective value of one deck on anodal surface; by this tunic; suppressed on the one hand under high voltage electrolyte solvent component oxidation Decomposition further; suppress to a certain extent on the other hand the stripping phenomenon of positive electrode, effectively protected positive electrode, thereby improved cycle performance and the security performance of high-voltage lithium ion batteries.
Accompanying drawing explanation
The constant potential comparison diagram of the lithium ion battery that Fig. 1 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made.
The cyclic voltammetric comparison diagram that the lithium ion battery front two that Fig. 2 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made encloses.
AC impedance comparison diagram after lithium ion battery circulation 200 circles that Fig. 3 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made.
Lithium ion battery circulation 200 circles that Fig. 4 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made discharge and recharge comparison diagram.
After lithium ion battery circulation 200 circles that Fig. 5 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made, analyze comparison diagram with the surface-elements of fresh anode pole piece.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
(1) by cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:1 mixing in mass ratio, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 1.0mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 2%; Obtain high-voltage lithium ion batteries function electrolyte.
Embodiment 2
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=1:2, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 28 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 0.8mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 1%; Obtain high-voltage lithium ion batteries function electrolyte.
Embodiment 3
(1) by cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:3 mixing in mass ratio, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 28 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 1.0mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 1%; Obtain high-voltage lithium ion batteries function electrolyte.
Embodiment 4
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=1:2, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 30 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 1.0mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 1%; Obtain high-voltage lithium ion batteries function electrolyte.
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=1:1, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 0.8mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 2%; Obtain the function electrolyte of high-voltage lithium ion batteries.
Embodiment 6
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=3:2, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 35 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 1.0mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 1%; Obtain high-voltage lithium ion batteries function electrolyte.
Embodiment 7
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent methyl ethyl carbonate (EMC) are mixed according to mass ratio EC:EMC=3:2, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 40 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and methyl ethyl carbonate, stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 0.8mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 2%; Obtain high-voltage lithium ion batteries function electrolyte.
Embodiment 8
(1) cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) are mixed according to mass ratio EC:DMC=1:2, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the resulting mixed solvent of step (1), stir, obtain common electrolyte; Wherein, electric conducting lithium salt LiPF
6final concentration in common electrolyte is 1.2mol/L;
(2) in the common electrolyte of preparing in step (1), add three (trimethyl silane) phosphate, the consumption of three (trimethyl silane) phosphate is common electrolyte quality 5%; Obtain the function electrolyte of high-voltage lithium ion batteries.
Comparative example
(1) by cyclic carbonate ester solvent ethylene carbonate (EC) and linear carbonates solvent dimethyl carbonate (DMC) EC:DMC=1:1 mixing in mass ratio, and adopt
molecular sieve, calcium hydride, lithium hydride clarification, dewater, obtain mixed solvent; Under 25 ℃ of conditions of room temperature, by electric conducting lithium salt LiPF
6be dissolved in the mixed solvent of ethylene carbonate and dimethyl carbonate electric conducting lithium salt LiPF
6final concentration be 1.0mol/L, stir, obtain common electrolyte.
Effect comparison:
Common electrolyte prepared by high-voltage lithium ion batteries function electrolyte prepared by embodiment 2 and comparative example compares:
(1) the constant potential comparison diagram of the lithium ion battery that Fig. 1 electrolyte that to be embodiment 2 prepare with comparative example is made.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, adding the high-voltage lithium ion batteries function electrolyte of embodiment 2 preparations or each 30 μ L of common electrolyte prepared by comparative example, then according to the assembled in sequence of negative cover, spring leaf, pad, lithium sheet, positive pole, positive cover, become battery Hou Solartron-1470(Britain) multi-channel analyzer carries out constant potential electro-chemical test.First with the multiplying power of 0.5C, carry out constant current charge to 5.2V; then constant voltage charge 15 hours under 5.2V; Fig. 1 shows that the high-voltage lithium ion batteries function electrolyte of embodiment 2 preparations has less aftercurrent; illustrate that three (trimethyl silane) phosphate can be at the surperficial initial oxidation of positive pole; form layer protecting film, thereby suppress the further oxidation Decomposition of carbonate solvent.
(2) the cyclic voltammetric comparison diagram that the lithium ion battery front two that Fig. 2 electrolyte that to be embodiment 2 prepare with comparative example is made encloses.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, adding each 30 μ L of common electrolyte that high-voltage lithium ion batteries function electrolyte that embodiment 2 prepares or comparative example prepare, be then assembled into battery Hou Solartron-1470(Britain) multi-channel analyzer carries out cyclic voltammetric electro-chemical test.Sweep limits is 3V～5V, and sweep speed is 0.05mV/s, and Fig. 2 shows that the high-voltage lithium ion batteries function electrolyte that embodiment 2 prepares has less spike potential, illustrates and has better invertibity.
(3) the AC impedance comparison diagram after lithium ion battery circulation 200 circles that Fig. 3 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, adding each 30 μ L of common electrolyte that high-voltage lithium ion batteries function electrolyte that embodiment 2 prepares or comparative example prepare, be then assembled into battery Hou Solartron-1470(Britain) multi-channel analyzer carries out ac impedance measurement.At 25 ℃ of room temperatures,, with 1C charge and discharge multiplying power after charge and discharge cycles between 3～4.9V scope 200 circle, measure the variation of electrode surface impedance.As shown in Figure 3, the impedance of the cathode film that the common electrolyte that the impedance ratio comparative example of the cathode film that the high-voltage lithium ion batteries function electrolyte that embodiment 2 prepares forms obtains forms is little, further illustrate three (trimethyl silane) phosphate and can form densification, stable cathode film on anodal surface.
(4) lithium ion battery circulation 200 circles that Fig. 4 electrolyte that to be the embodiment of the present invention 2 prepare with comparative example is made discharge and recharge comparison diagram.Method of testing is: with the nickel LiMn2O4 electrode of working, lithium sheet is done electrode, adding each 30 μ L of common electrolyte that high-voltage lithium ion batteries function electrolyte that embodiment 2 prepares or comparative example prepare, be then assembled into battery Hou Solartron-1470(Britain) multi-channel analyzer carries out charge-discharge test.At 25 ℃ of room temperatures, with 1C charge and discharge multiplying power after charge and discharge cycles between 3～4.9V scope 200 circle, measure charge-discharge performance.As shown in Figure 4, after circulation 200 circles, embodiment 2 compares comparative example better cyclical stability.
(5) after lithium ion battery circulation 200 circles that Fig. 5 electrolyte that to be embodiment 2 prepare with comparative example is made, analyze comparison diagram with the surface-elements of fresh anode pole piece.As shown in Figure 5, on the electrodes of lithium-ion batteries that the high-voltage lithium ion batteries function electrolyte of embodiment 2 preparations after circulation is made, there is Si-O and Si-C, proved that three (trimethyl silane) phosphate participates in the formation of surperficial cathode film; Comparative example's pole piece surface does not detect Si-O and Si-C.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. a high-voltage lithium ion batteries function electrolyte, is characterized in that: described high-voltage lithium ion batteries function electrolyte is in common electrolyte, to add the functional additive that is equivalent to common electrolyte quality 1～5% to obtain; Described common electrolyte is to consist of cyclic carbonate ester solvent, linear carbonates solvent and electric conducting lithium salt; Functional additive is three (trimethyl silane) phosphate.
2. high-voltage lithium ion batteries function electrolyte according to claim 1, is characterized in that: described cyclic carbonate ester solvent and the mass ratio of linear carbonates solvent are (1:3)～(3:2); The final concentration of electric conducting lithium salt in common electrolyte is 0.8～1.2mol/L.
3. high-voltage lithium ion batteries function electrolyte according to claim 1, is characterized in that: described cyclic carbonate ester solvent is ethylene carbonate; Described linear carbonates solvent is at least one in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate and methyl propyl carbonate; Described electric conducting lithium salt is LiPF
6, LiBOB, LiSO
3cF
3, LiClO
4, LiAsF
6, Li(CF
3sO
2)
2n and Li(CF
3sO
2)
3in at least one.
4. the preparation method of the high-voltage lithium ion batteries function electrolyte described in claim 1～3 any one, is characterized in that comprising the steps:
(1) by cyclic carbonate ester solvent and linear carbonates solvent, clarification, dewater, obtain mixed solvent; At ambient temperature, electric conducting lithium salt is added in the mixed solvent of cyclic carbonate and linear carbonates, stir, obtain common electrolyte;
(2) in the common electrolyte obtaining in step (1), add the functional additive that is equivalent to common electrolyte quality 1～5%; Obtain high-voltage lithium ion batteries function electrolyte; Described functional additive is three (trimethyl silane) phosphate.
5. the preparation method of high-voltage lithium ion batteries function electrolyte according to claim 4, it is characterized in that: described cyclic carbonate ester solvent and the mass ratio of linear carbonates solvent are for (1:3)～(3:2), the final concentration of electric conducting lithium salt in common electrolyte is 0.8～1.2mol/L.
6. the preparation method of high-voltage lithium ion batteries function electrolyte according to claim 4, is characterized in that: described cyclic carbonate ester solvent is ethylene carbonate; Described linear carbonates solvent is at least one in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate and methyl propyl carbonate.
7. the preparation method of high-voltage lithium ion batteries function electrolyte according to claim 4, is characterized in that: described electric conducting lithium salt is LiPF
6, LiBOB, LiSO
3cF
3, LiClO
4, LiAsF
6, Li(CF
3sO
2)
2n and Li(CF
3sO
2)
3in at least one.
8. the preparation method of high-voltage lithium ion batteries function electrolyte according to claim 4, is characterized in that: the clarification described in step (1), dewater as processing by any one or at least two kinds in molecular sieve, activated carbon, calcium hydride, lithium hydride, anhydrous calcium oxide, calcium chloride, phosphorus pentoxide, alkali and alkaline earth metal ions; Described room temperature range is 25～40 ℃.
9. the preparation method of high-voltage lithium ion batteries function electrolyte according to claim 8, is characterized in that: described molecular sieve is
type,
type or
type.
10. the application of the high-voltage lithium ion batteries function electrolyte described in claim 1～3 any one in manufacturing lithium ion battery.
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| CN113937252A (en) * | 2021-10-11 | 2022-01-14 | 西北工业大学 | Laser-assisted construction method for anode interface layer |
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Cited By (8)
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| WO2017020431A1 (en) * | 2015-08-03 | 2017-02-09 | 深圳新宙邦科技股份有限公司 | Non-aqueous electrolyte of lithium-ion battery and lithium-ion battery |
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| CN108767315A (en) * | 2018-05-08 | 2018-11-06 | 桑德集团有限公司 | A kind of electrolysis additive, lithium battery electrolytes and lithium ion battery |
| CN109256588A (en) * | 2018-09-20 | 2019-01-22 | 华南师范大学 | One kind containing the high voltage functionality electrolyte and the preparation method and application thereof of (2- allyl benzene oxygroup) trimethylsilane additive |
| CN109546215A (en) * | 2018-11-02 | 2019-03-29 | 珠海市赛纬电子材料股份有限公司 | A kind of nonaqueous lithium ion battery electrolytic solution for preventing steel shell from corroding |
| CN112290089A (en) * | 2019-07-25 | 2021-01-29 | 杉杉新材料（衢州）有限公司 | Lithium ion battery non-aqueous electrolyte solution and lithium ion battery |
| CN110783586A (en) * | 2019-11-21 | 2020-02-11 | 华南师范大学 | High-power-density primary battery electrolyte and preparation method and application thereof |
| CN113937252A (en) * | 2021-10-11 | 2022-01-14 | 西北工业大学 | Laser-assisted construction method for anode interface layer |
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