CN114566754A - Iron-based biomass carbon composite diaphragm, preparation method thereof and lithium-sulfur battery based on iron-based biomass carbon composite diaphragm - Google Patents
Iron-based biomass carbon composite diaphragm, preparation method thereof and lithium-sulfur battery based on iron-based biomass carbon composite diaphragm Download PDFInfo
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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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
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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 discloses an iron-based biomass carbon composite diaphragm, a preparation method thereof and a lithium sulfur battery based on the iron-based biomass carbon composite diaphragm, belongs to the technical field of lithium sulfur batteries, and solves the technical problem that the shuttle effect of the lithium sulfur battery cannot be effectively solved by the conventional diaphragm. The preparation method of the iron-based biomass carbon composite diaphragm comprises the steps of preparing the modified diaphragm by using waste birch wood chips as biomass and using one of ferric nitrate, ferric sulfate and ferric chloride as an iron-containing reagent through a coating method, carrying out acid washing and water washing on the biomass to remove impurities, drying the biomass, mixing the dried biomass and the iron-containing reagent to obtain iron-based biomass, and carrying out high-temperature calcination in a tube furnace to obtain the iron-based biomass carbon. The method has the advantages of low cost and simple operation, and is favorable for commercial production. The prepared iron-based biomass carbon composite diaphragm has a certain adsorption effect on polysulfide generated by redox reaction in a lithium sulfur battery, can block shuttling of the polysulfide, further inhibits shuttling effect, and can effectively improve cycle performance and stability of the battery.
Description
Technical Field
The invention belongs to the technical field of lithium-sulfur batteries, and particularly relates to an iron-based biomass carbon composite diaphragm, a preparation method thereof and a lithium-sulfur battery based on the iron-based biomass carbon composite diaphragm.
Background
With the rapid development of the new energy field, people have higher and higher requirements on the performance of an energy storage system, the traditional lithium battery is limited by the specific capacity of a positive electrode material, and the specific energy is difficult to be greatly improved, so that the development of a new energy storage system has great significance on the increasing energy storage requirement.
The lithium-sulfur battery with sulfur as the positive electrode and metal lithium as the negative electrode has the advantages of high theoretical specific capacity (1675mAh/g) and energy density (2600Wh/kg), low sulfur price, environmental friendliness and the like. Therefore, in recent years, the lithium-sulfur battery is more and more emphasized by people, and has better application prospect in the fields of new energy, energy storage systems and the like. However, the "shuttle effect" is one of the key factors that lead to the degradation of the performance of lithium sulfur batteries: during the charging and discharging process of the battery, soluble polysulfide generated by the sulfur anode is dissolved in the electrolyte and passes through the diaphragm to reach the metallic lithium cathode area, the lithium cathode is corroded, and insoluble Li is generated2S2And Li2S covers the surface of the negative electrode to passivate the negative electrode, so that the active substances of the battery are lost and the capacity is reduced.
At present, the research of the diaphragm is an important approach for solving the shuttle effect of the lithium sulfur battery, the diaphragm is used as an important component of the lithium sulfur battery and can prevent the short circuit caused by the direct contact of the anode and the cathode of the battery, but the traditional diaphragm is mainly a polypropylene diaphragm (PP diaphragm), a polyethylene diaphragm (PE diaphragm) or a composite material of the two, the diaphragms have the advantages of low manufacturing cost and good flexibility, but the shuttle effect still can greatly influence the performance of the battery.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an iron-based biomass carbon composite diaphragm, a preparation method thereof and a lithium sulfur battery based on the iron-based biomass carbon composite diaphragm, so as to solve the technical problem that the shuttle effect of the lithium sulfur battery cannot be effectively solved by the existing diaphragm.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the invention discloses a preparation method of an iron-based biomass carbon composite diaphragm, which comprises the following steps:
step 1: sequentially carrying out acid washing, water washing and drying on the waste biomass to obtain biomass;
step 2: putting biomass into an iron-containing solution to obtain a mixed solution, and drying to obtain iron-based biomass;
and step 3: calcining the iron-based biomass to obtain iron-based biomass carbon;
and 4, step 4: mixing iron-based biomass carbon with a binder and a conductive agent, then adding a solvent, and uniformly stirring to obtain coating slurry;
and 5: and coating the coating slurry on one side of the diaphragm body, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Further, the biomass is waste birch wood chips; the acid washing is carried out for 2-6h by adopting hydrochloric acid with the concentration of 0.1-1 mol/L.
Further, in step 2, the iron-containing reagent in the iron-containing solution comprises ferric chloride, ferric nitrate or ferric sulfate; the mass fraction of the iron-containing reagent in the mixed solution is 20-50%.
Further, in step 2, the biomass is put into an iron-containing solution, and the reaction process needs ultrasonic cleaning for 2-6 h.
Further, in step 3, the calcination is carried out under nitrogen at 600-1000 ℃ for 2-5 h.
Further, in the step 4, the solvent is N-methyl pyrrolidone, and the conductive agent is Super-P, Ketjen black or acetylene black; the binder is polyvinylidene fluoride or polyvinylidene fluoride; the stirring is magnetic stirring, the magnetic stirring speed is 400-600r/min, and the magnetic stirring time is 1-3 days.
Further, in the step 4, the mass ratio of the iron-based biomass carbon to the conductive agent to the binder is (8-7): (1-2): 1, the concentration of the coating slurry obtained after adding the solvent is 50-100 mg/mL.
Further, in step 5, the coating slurry is coated on the diaphragm body to a thickness of 50-200 μm.
The invention also discloses the iron-based biomass carbon composite diaphragm prepared by the preparation method of the iron-based biomass carbon composite diaphragm.
The invention also discloses a lithium-sulfur battery which comprises the iron-based biomass carbon composite diaphragm.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a preparation method of an iron-based biomass carbon composite diaphragm. The iron-based biomass carbon composite diaphragm is prepared by uniformly mixing the iron-based biomass carbon composite diaphragm with a conductive agent and a binder solution, coating the mixture on a diaphragm substrate, and drying the mixture.
Furthermore, the biomass adopts waste birch wood chips, so that the conductivity and the adsorption performance are good, the preparation process is simple, the raw material source is wide, and the shuttle effect can be inhibited to a certain extent by Van der Waals force formed by polysulfide so as to improve the battery performance.
Furthermore, the iron-containing reagent, namely ferric chloride, ferric nitrate or ferric sulfate and other solutions can effectively adsorb polysulfide through the polar action so as to improve the electrochemical performance of the lithium-sulfur battery.
The invention also discloses the iron-based biomass carbon composite diaphragm prepared by the preparation method, the composite diaphragm has a certain adsorption effect on polysulfide generated by redox reaction in a lithium sulfur battery, and can block shuttling of the polysulfide, so that the shuttling effect is inhibited, and the cycle performance and stability of the battery can be effectively improved.
The invention also discloses a lithium sulfur battery adopting the iron-based biomass carbon composite diaphragm, and the iron-based biomass carbon composite diaphragm has a certain adsorption effect on polysulfide generated by redox reaction in the lithium sulfur battery, so that shuttling of the polysulfide can be blocked, the shuttling effect is further inhibited, and the cycle performance and stability of the battery can be effectively improved. The polar metal iron can adsorb polysulfide through the polar effect so as to improve the cycle performance of the lithium-sulfur battery and greatly improve the capacity retention rate of the lithium-sulfur battery.
Drawings
FIG. 1 is a scanned view of a biomass after carbonization;
FIG. 2 is a scan of iron-based biomass carbon;
FIG. 3 is an XRD pattern of iron-based biomass carbon;
fig. 4 is a graph of cycle performance of a lithium sulfur battery including the iron-based biomass carbon composite separator prepared in example 1;
fig. 5 is a charge and discharge graph of a lithium sulfur battery including the iron-based biomass carbon composite separator prepared in example 1.
Detailed Description
To make the features and effects of the present invention comprehensible to those skilled in the art, general description and definitions are made below with reference to terms and expressions mentioned in the specification and claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The theory or mechanism described and disclosed herein, whether correct or incorrect, should not limit the scope of the present invention in any way, i.e., the present disclosure may be practiced without limitation to any particular theory or mechanism.
All features defined herein as numerical ranges or percentage ranges, such as values, amounts, levels and concentrations, are for brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to cover and specifically disclose all possible subranges and individual numerical values (including integers and fractions) within the range.
Unless otherwise specified herein, "comprising," including, "" containing, "" having, "or the like, means" consisting of … … "and" consisting essentially of … …, "e.g.," a comprises a "means" a comprises a and the other, "and" a comprises a only.
In this context, for the sake of brevity, not all possible combinations of features in the various embodiments or examples are described. Therefore, the respective features in the respective embodiments or examples may be arbitrarily combined as long as there is no contradiction between the combinations of the features, and all the possible combinations should be considered as the scope of the present specification.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Instrumentation conventional in the art is used in the following examples. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out under conventional conditions or conditions recommended by the manufacturers. The various starting materials used in the examples which follow, unless otherwise indicated, are conventional commercial products having specifications which are conventional in the art. In the description of the present invention and the following examples, "%" represents weight percent, "parts" represents parts by weight, and proportions represent weight ratios, unless otherwise specified.
Example 1
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass for 6 hours by using 0.1mol/L hydrochloric acid for acid washing, then washing the waste biomass to be neutral, and drying the waste biomass to obtain biomass;
step 2: putting birch wood chip biomass into a ferric nitrate solution, mixing, carrying out ultrasonic cleaning for 2 hours to obtain a solution with an iron-containing reagent mass fraction of 20%, and drying to obtain iron-based biomass;
and step 3: placing the mixture in a nitrogen-filled tube furnace, calcining the mixture for 3 hours at 800 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 7: 2: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 50mg/mL, and stirring for 1 day at the rotating speed of 400r/min to obtain the coating slurry; the solvent is N-methyl pyrrolidone, and the conductive agent is Super-P; the binder is polyvinylidene fluoride;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 100 mu m, so that the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery is obtained.
Example 2
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass in 0.2mol/L hydrochloric acid for 5h for acid washing, then washing with water to be neutral, and drying to obtain biomass;
step 2: putting birch sawdust biomass into a ferric nitrate solution, mixing, performing ultrasonic oscillation for 3 hours to obtain a solution with an iron-containing reagent mass fraction of 30%, and drying to obtain iron-based biomass;
and step 3: placing the mixture in a nitrogen-filled tube furnace, calcining the mixture for 3 hours at 900 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 7: 2: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 60mg/mL, mixing, and stirring for 3 days at the speed of 450 r/min; the solvent is N-methyl pyrrolidone, and the conductive agent is ketjen black; the binder is polyvinylidene fluoride;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 50 microns, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Example 3
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass for 4 hours by using 0.3mol/L hydrochloric acid for acid washing, then washing the waste biomass to be neutral, and drying the waste biomass to obtain biomass;
step 2: putting birch sawdust biomass into a ferric nitrate solution, mixing, performing ultrasonic oscillation for 4 hours to obtain a solution with 35% of the mass fraction of an iron-containing reagent, and drying to obtain iron-based biomass;
and 3, step 3: placing the mixture in a nitrogen-filled tube furnace, calcining the mixture for 4 hours at 800 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 7: 2: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 75mg/mL, mixing, and stirring the coating slurry for 2 days at the speed of 500 r/min; the solvent is N-methyl pyrrolidone, and the conductive agent is acetylene black; the binder is polytetrafluoroethylene;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 150 micrometers, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Example 4
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass in 0.8mol/L hydrochloric acid for 2h for acid washing, then washing with water to be neutral, and drying to obtain biomass;
and 2, step: putting birch sawdust biomass into a ferric nitrate solution, mixing, performing ultrasonic oscillation for 6 hours to obtain a solution with the iron-containing reagent mass fraction of 40%, and drying to obtain iron-based biomass;
and step 3: placing the mixture in a nitrogen-filled tube furnace, calcining the mixture for 5 hours at 700 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 8: 1: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 90mg/mL, mixing, and stirring for 2 days at the rotation speed of 550 r/min; the solvent is N-methylpyrrolidone, and the conductive agent is Super-P; the binder is polytetrafluoroethylene;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 150 micrometers, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Example 5
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass for 6 hours by using 1mol/L hydrochloric acid for acid washing, then washing the waste biomass to be neutral, and drying the waste biomass to obtain biomass;
and 2, step: putting birch wood chip biomass into a ferric nitrate solution, mixing, performing ultrasonic oscillation for 5 hours to obtain a solution with the iron-containing reagent mass fraction of 50%, and drying to obtain iron-based biomass;
and step 3: placing the mixture in a tubular furnace filled with nitrogen, calcining the mixture for 5 hours at the temperature of 600 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 7: 2: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 100mg/mL, mixing, and stirring for 2 days at the speed of 600 r/min; the solvent is N-methyl pyrrolidone, and the conductive agent is Super-P; the binder is polyvinylidene fluoride;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 200 microns, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Example 6
A preparation method of an iron-based biomass carbon composite diaphragm comprises the following steps:
step 1: soaking the waste biomass for 3 hours by using 0.5mol/L hydrochloric acid for acid washing, then washing the waste biomass to be neutral, and drying the waste biomass to obtain biomass;
step 2: putting birch sawdust biomass into a ferric nitrate solution, mixing, performing ultrasonic oscillation for 3 hours to obtain a solution with 35% of the mass fraction of an iron-containing reagent, and drying to obtain iron-based biomass;
and step 3: placing the mixture in a tubular furnace filled with nitrogen, calcining the mixture for 3 hours at 750 ℃, and cooling the mixture to room temperature to obtain iron-based biomass carbon;
and 4, step 4: mixing the iron-based biomass carbon obtained in the step (3) with a conductive agent, wherein a binder is mixed according to a mass ratio of 7: 1: 1, mixing, adding a solvent to obtain coating slurry with the concentration of 80mg/mL, mixing, and stirring for 1 day at the rotation speed of 550 r/min; the solvent is N-methyl pyrrolidone, and the conductive agent is Super-P; the binder is polyvinylidene fluoride;
and 5: coating the coating slurry on one side of the diaphragm body, which is close to the positive electrode, wherein the thickness of the coating slurry coated on the diaphragm body is 80 microns, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
Fig. 1 is a scanned graph of biomass in example 1 after carbonization, from which it can be seen that loose and porous birch can provide a parallel arrangement of multi-stage microchannel structure, which can play a role in physical separation and inhibition of polysulfide diffusion, and can effectively inhibit shuttle effect, thereby improving the utilization rate of active material and specific capacity of battery; FIG. 2 is a scanned graph of the iron-based biochar of example 1, from which it can be seen that the material structure is stable after treatment with ferric nitrate reagent; fig. 3 is an XRD chart of the iron-based biomass carbon in example 1, and it can be seen that the iron-based biomass carbon contains graphite and magnetite. The graphite can increase the conductivity of the material, and the ferroferric oxide can capture and activate polysulfide, so that the performance of the lithium-sulfur battery is further improved; fig. 4 is a battery cycle performance diagram of a lithium sulfur battery using the iron-based biomass carbon composite separator prepared in example 1 and a comparative example of a lithium sulfur battery using an unmodified polypropylene separator (PP separator), and it can be seen from the diagram that the stability of the lithium sulfur battery using the iron-based biomass carbon composite separator prepared in the present invention is significantly improved, and the electrochemical performance of the lithium sulfur battery is significantly improved; fig. 5 is a charge-discharge curve diagram of a lithium-sulfur battery using the iron-based biomass carbon composite separator prepared in example 1, and it can be seen from the graph that the utilization rate of sulfur can be improved and the electrochemical performance can be improved by using the modified separator.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The preparation method of the iron-based biomass carbon composite diaphragm is characterized by comprising the following steps of:
step 1: sequentially carrying out acid washing, water washing and drying on the waste biomass to obtain biomass;
step 2: putting biomass into an iron-containing solution to obtain a mixed solution, and drying to obtain iron-based biomass;
and step 3: calcining the iron-based biomass to obtain iron-based biomass carbon;
and 4, step 4: mixing iron-based biomass carbon with a binder and a conductive agent, then adding a solvent, and uniformly stirring to obtain coating slurry;
and 5: and coating the coating slurry on one side of the diaphragm body, and drying to obtain the iron-based biomass carbon composite diaphragm of the lithium-sulfur battery.
2. The method for preparing the iron-based biomass carbon composite diaphragm according to claim 1, wherein in the step 1, the biomass is waste birch wood chips; the acid washing is carried out for 2-6h by adopting hydrochloric acid with the concentration of 0.1-1 mol/L.
3. The method for preparing the iron-based biomass carbon composite membrane according to claim 1, wherein in the step 2, the iron-containing reagent in the iron-containing solution comprises ferric chloride, ferric nitrate or ferric sulfate; the mass fraction of the iron-containing reagent in the mixed solution is 20-50%.
4. The preparation method of the iron-based biomass carbon composite diaphragm according to claim 1, wherein in the step 2, the biomass is put into the iron-containing solution, and the reaction process needs ultrasonic cleaning for 2-6 h.
5. The method for preparing the iron-based biomass carbon composite membrane as claimed in claim 1, wherein in the step 3, the calcination is carried out under nitrogen at 600-1000 ℃ for 2-5 h.
6. The method for preparing the iron-based biomass carbon composite membrane according to claim 1, wherein in the step 4, the solvent is N-methyl pyrrolidone, and the conductive agent is Super-P, Ketjen black or acetylene black; the binder is polyvinylidene fluoride or polyvinylidene fluoride; the stirring is magnetic stirring, the magnetic stirring speed is 400-600r/min, and the magnetic stirring time is 1-3 days.
7. The preparation method of the iron-based biomass carbon composite membrane according to claim 1, wherein in the step 4, the mass ratio of the iron-based biomass carbon to the conductive agent to the binder is (8-7): (1-2): 1, the concentration of the coating slurry obtained after adding the solvent is 50-100 mg/mL.
8. The preparation method of the iron-based biomass carbon composite membrane according to claim 1, wherein in the step 5, the coating slurry is coated on the membrane body to a thickness of 50-200 μm.
9. An iron-based biomass carbon composite diaphragm prepared by the method for preparing the iron-based biomass carbon composite diaphragm according to any one of claims 1 to 8.
10. A lithium sulfur battery comprising the iron-based biomass carbon composite separator of claim 9.
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| WO2015110333A1 (en) * | 2014-01-23 | 2015-07-30 | Basf Se | Electrochemical cells comprising alkali-ion conducting composite membranes |
| CN108807808A (en) * | 2018-08-29 | 2018-11-13 | 长沙矿冶研究院有限责任公司 | A kind of biomass carbon aeroge is modified lithium-sulfur cell dedicated diaphragm and preparation method thereof and lithium-sulfur cell |
| CN112531281A (en) * | 2020-09-25 | 2021-03-19 | 山东大学 | Preparation method of modified diaphragm for lithium-sulfur battery based on nano metal hydroxide-carbon composite material |
| CN113421990A (en) * | 2021-05-28 | 2021-09-21 | 西安理工大学 | Iron-based biomass carbon intermediate layer of lithium-sulfur battery, preparation method and lithium-sulfur battery |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015110333A1 (en) * | 2014-01-23 | 2015-07-30 | Basf Se | Electrochemical cells comprising alkali-ion conducting composite membranes |
| CN108807808A (en) * | 2018-08-29 | 2018-11-13 | 长沙矿冶研究院有限责任公司 | A kind of biomass carbon aeroge is modified lithium-sulfur cell dedicated diaphragm and preparation method thereof and lithium-sulfur cell |
| CN112531281A (en) * | 2020-09-25 | 2021-03-19 | 山东大学 | Preparation method of modified diaphragm for lithium-sulfur battery based on nano metal hydroxide-carbon composite material |
| CN113421990A (en) * | 2021-05-28 | 2021-09-21 | 西安理工大学 | Iron-based biomass carbon intermediate layer of lithium-sulfur battery, preparation method and lithium-sulfur battery |
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