CN111211255A - Water-based lithium titanate battery and preparation method thereof - Google Patents

Water-based lithium titanate battery and preparation method thereof Download PDF

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CN111211255A
CN111211255A CN202010015674.4A CN202010015674A CN111211255A CN 111211255 A CN111211255 A CN 111211255A CN 202010015674 A CN202010015674 A CN 202010015674A CN 111211255 A CN111211255 A CN 111211255A
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lithium titanate
electrolyte
lithium
water
titanate battery
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CN111211255B (en
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黄妙逢
杨嘉杰
郑思容
巨新
陈森
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University of Science and Technology Beijing USTB
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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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • 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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/38—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/626—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/138—Primary casings; Jackets or wrappings adapted for specific cells, e.g. electrochemical cells operating at high temperature
    • 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
    • H01M2300/0002—Aqueous electrolytes
    • 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
    • H01M2300/0085—Immobilising or gelification of electrolyte
    • 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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    • 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
    • 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
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Abstract

The invention provides a water-based lithium titanate battery and a preparation method thereof, belonging to the technical field of ion batteries and electrolyte. The present invention synthesizes an aqueous electrolyte having a wide electrochemical window by using an organic lithium salt, water and solid polyethylene glycol as electrolytes. The lithium titanate electrode active material disclosed by the invention has better efficiency by using the metallic aluminum as a conductive agent of the lithium titanate electrode active material and matching with the water-based electrolyte. The electrolyte is in a glue state, can well retain moisture, has good environmental adaptability, can be used under the condition of no packaging, and has low requirement on preparation environment. On the other hand, the lithium titanate battery can timely discharge gas decomposed by the electrolyte through the porous current collector and the package, can be communicated with the outside, and can timely discharge the decomposed gas, so that the lithium titanate battery is prevented from swelling. The water-based lithium titanate battery has the characteristics of good safety performance and recycling.

Description

Water-based lithium titanate battery and preparation method thereof
Technical Field
The invention belongs to the technical field of ion batteries and electrolytes. In particular to a water-based lithium titanate battery and a preparation method thereof.
Technical Field
Currently, lithium ion batteries use flammable and explosive organic solvents as electrolyte solvents. The potential safety hazard of the organic electrolyte is very large. How to solve the safety problem of the lithium ion battery has received great attention in recent years. One approach to solve the safety problem of lithium ion batteries is to use aqueous electrolytes.
Compared with the organic electrolyte, the water system electrolyte has the advantages of low price, environmental protection, no safety problems of flammability, easy explosion and the like of the organic electrolyte. However, aqueous electrolytes have a significant disadvantage, namely low operating voltages. Because the thermodynamically stable potential of water is only around 1.23V. Water hydrolyzes at a lower voltage than organic electrolytes. Therefore, increasing the hydrolysis voltage of the aqueous solvent in the aqueous ion battery electrolyte is the key to realizing a high-performance aqueous electrochemical capacitor.
The negative electrode of the lithium titanate lithium ion battery adopts lithium titanate. Since lithium titanate has a relatively low working potential (1.55vvs. li) and a relatively high decomposition potential of water (2.2V vs. li), an aqueous electrolyte is difficult to use in a lithium titanate battery. The reaction potential of lithium titanate is difficult to achieve by the aqueous electrolyte.
Another problem of the lithium titanate battery is that the electrolyte of the lithium titanate battery is easily decomposed, so that the battery is easily swelled and the use performance of the battery is affected. How to solve the problem of lithium titanate battery bulge is one of the main problems influencing the application of lithium titanate batteries.
Compared with the traditional lithium titanate battery, the battery has high requirements on the environment, is particularly sensitive to moisture, and is difficult to scrap, dispose or recycle, thereby easily causing resource waste.
Disclosure of Invention
The invention aims to provide a solution for the problems of lithium titanate batteries.
Aiming at the problem that organic electrolyte is flammable and explosive, water system electrolyte is adopted to replace flammable and explosive organic electrolyte, and therefore safety performance of a lithium battery is further improved.
A water system lithium titanate battery is characterized in that the lithium titanate battery comprises a positive electrode, a negative electrode, a piece of separating paper, a conductive agent, an electrolyte and a current collector; non-woven fabrics are used as separation paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, solid polyethylene glycol and water are used as solvents in electrolyte, and lithium bistrifluoromethanesulfonylimide and lithium bistrifluoromethylsulfonyl imide are used as electrolytes; the mass ratio of the solid polyethylene glycol to the water is 8:2-9:1, the electrolyte concentration is 5-11mol/kg, and the molar ratio of the lithium ions to the water is reduced to below 1: 1.
Further, the electrolyte is a single lithium salt, or a mixture of lithium salts.
Further, the lithium titanate electrode adopts acetylene black or aluminum powder or aluminum wires as a conductive agent, and the mass ratio of the acetylene black to the aluminum is 0-1.
Further, the current collector is a porous current collector and comprises a porous carbon cloth and a porous aluminum foil.
The preparation method of the water-based lithium titanate battery is characterized in that the lithium manganate electrode is prepared, and the lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting and drying; preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black or \ and aluminum powder: the adhesive is prepared from the following components in percentage by weight: 1:1 (the mass ratio of acetylene black or/and aluminum powder is 0-1) is uniformly dispersed to prepare slurry, then the slurry is coated on a porous aluminum foil, and the porous aluminum foil is compacted and dried at 5-10 MPa; the drying temperature is 75-85 ℃.
Further, the lithium titanate battery is packaged by adopting a package with a vent valve or a package with a through hole; the gas generated by the decomposition of the electrolyte is released through the pores.
Furthermore, the lithium titanate battery is coated with a hydrophobic coating outside, and the hydrophobic coating is paraffin or a super-hydrophobic nano material.
Since the water decomposition voltage is relatively low, when a voltage is applied to the electrodes (water decomposition voltage is reached), hydrolysis reaction occurs at the interface where the water solvent contacts the electrodes or the water solvent contacts the electrodes. In the electrolyte, water can be roughly divided into free water and bound water, the hydrolysis voltage of free water is relatively low (1.23V), and the hydrolysis voltage of bound water is relatively high (can reach and even exceed 3V). Therefore, the content of free water in the aqueous electrolyte solution is reduced, and the decomposition of the aqueous electrolyte solution can be effectively suppressed.
The method is mainly used for reducing the content of free water molecules in the electrolyte together, so that the working voltage of the electrolyte is improved, and the electrolyte can reach the working potential of the lithium titanate cathode.
The invention utilizes the solid polyethylene glycol with large molecular weight to be mixed and dissolved with water, and free water can be effectively reduced because the polyethylene glycol can generate hydrogen bonds with water. On the other hand, the high-concentration electrolyte further reduces the free water in the electrolyte by utilizing the strong adsorption effect between cations and water, thereby greatly improving the working voltage of the aqueous electrolyte. The solvent is solid polyethylene glycol and water in a mass ratio of 8:2-9:1, and the electrolyte is lithium salt with high solubility, such as lithium bistrifluoromethanesulfonylimide, lithium bistrifluoromethylsulfonyl imide and the like. The electrolyte can be a single lithium salt or a mixture of multiple lithium salts, and the concentration of the electrolyte is 5-11 mol/kg. The molar ratio of lithium ions to water is reduced to 1:1 or less by the high concentration of lithium salt, thereby allowing the electrolyte to achieve a wide operating potential.
The lithium titanate electrode adopts acetylene black and aluminum powder or aluminum wires as conductive agents, can be used as the conductive agents independently, and can also be used in a mixed manner. The mass ratio of the acetylene black to the aluminum may be 0 to 1. Because aluminum has better stability in an aqueous electrolyte, the aluminum powder or aluminum wires are used as a conductive agent, and compared with pure acetylene black, the aluminum powder or aluminum wires can better inhibit the decomposition of the electrolyte and have higher coulombic efficiency.
Aiming at the problem of swelling of a lithium titanate battery, the swelling problem is solved by a mode of timely discharging electrolyte to decompose and generate gas. We use a porous current collector such as a porous carbon cloth, a porous aluminum foil, etc. The gas generated by the decomposition of the electrolyte is released through the pores. The electrolyte is in a glue state, the solid polyethylene glycol has good moisture retention, the concentration of water in the electrolyte can be well maintained, and the lithium titanate battery manufactured by the method can work even in a non-packaging state and has good stability.
The electrolyte solution has the characteristics, and unlike the conventional battery packaging, the electrolyte solution discharges gas generated by decomposition of the electrolyte solution through the packaging with a ventilation function. The lithium titanate battery package can be a package with an air release valve or a package with a through hole, so that gas can be discharged in time, and a battery pack is prevented from swelling.
The invention adopts through hole type packaging to prevent the battery performance from being reduced due to the change of the water content in the electrolyte caused by the water absorption of the battery pack caused by humid air. The lithium titanate battery is coated with the hydrophobic coating which can be paraffin or a super-hydrophobic nano material on the outer package, so that the moisture in the adsorbed air can be reduced, the moisture in the air adsorbed by the battery can be inhibited, and the concentration of the water in the electrolyte can be ensured.
Compared with the traditional lithium titanate battery, the battery has high requirements on the environment, is particularly sensitive to moisture, and is difficult to recycle. Due to the open type packaging of the lithium titanate battery and the good environment adaptability of the electrolyte, the battery can be conveniently recycled.
In the aspect of lithium titanate batteries, the advantages of the invention are as follows:
the method adopted by the invention is simple and universal, and can improve the safety performance of the lithium ion battery.
2 the ion battery related by the invention has very low preparation environment requirement compared with the conventional ion battery because the electrolyte has good environment adaptability, and can greatly reduce the investment in the aspect of production and preparation conditions.
3 the invention adopts metal aluminum as conductive agent, which is matched with water system electrolyte, and has better performance, low price of metal aluminum and low use cost.
4 due to the open type packaging of the lithium titanate battery and the good environmental adaptability of the electrolyte, the battery can be conveniently recycled.
Drawings
FIG. 1 is a schematic view showing the structure of an aqueous lithium titanate battery according to the present invention,
fig. 2 is a charge-discharge curve of a lithium titanate battery of example 1.
Detailed Description
Example 1
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing electrolyte, namely preparing 5mol/kg electrolyte by using lithium bistrifluoromethanesulfonylimide as electrolyte, polyethylene glycol 2000 as solubilizer and water as solvent, wherein the mass ratio of the polyethylene glycol 2000 to the water is 9: 1. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.
Example 2
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on porous carbon cloth, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing electrolyte, namely preparing 5mol/kg electrolyte by using lithium bistrifluoromethanesulfonylimide as electrolyte, polyethylene glycol 2000 as solubilizer and water as solvent, wherein the mass ratio of the polyethylene glycol 2000 to the water is 9: 1. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.
Example 3
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing an electrolyte, namely preparing 11mol/kg electrolyte by using lithium bistrifluoromethanesulfonylimide as an electrolyte, using polyethylene glycol 2000 as a solubilizer and using water as a solvent, wherein the mass ratio of the polyethylene glycol 2000 to the water is 8: 2. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.
Example 4
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on porous carbon cloth, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing electrolyte, namely preparing 5.5mol/kg electrolyte by using lithium bistrifluoromethanesulfonimide as electrolyte, polyethylene glycol 6000 as solubilizer and water as solvent, wherein the mass ratio of the polyethylene glycol 6000 to the water is 8: 2. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.
Example 5
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: aluminum powder: acetylene black: the adhesive is prepared from the following components in percentage by weight: 0.8:0.2: 1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing electrolyte, namely preparing 5.5mol/kg electrolyte by using lithium bistrifluoromethanesulfonylimide as electrolyte, polyethylene glycol 2000 as solubilizer and water as solvent, wherein the mass ratio of the polyethylene glycol 2000 to the water is 9: 1. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.
Example 6
Preparing a lithium manganate electrode, namely preparing lithium manganate: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting, and drying at 80 ℃. Preparing a lithium titanate electrode, wherein the lithium titanate: aluminum powder: the adhesive is prepared from the following components in percentage by weight: 1:1, uniformly dispersing and pulping, then coating on a porous aluminum foil, compacting at 5-10MPa, and drying at 80 ℃. Preparing electrolyte, namely preparing 5.5mol/kg electrolyte by using lithium bistrifluoromethanesulfonylimide as electrolyte, polyethylene glycol 2000 as solubilizer and water as solvent, wherein the mass ratio of the polyethylene glycol 2000 to the water is 9: 1. Non-woven fabrics are made of partition paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, the glue-like electrolyte is coated on the non-woven fabrics, the glue-like electrolyte is packaged by a porous aluminum plastic film, and a hydrophobic material is sprayed on the surface of the glue-like electrolyte.

Claims (7)

1. The water-based lithium titanate battery is characterized by comprising a positive electrode, a negative electrode, a separation paper,
Conductive agent, electrolyte, current collector; non-woven fabrics are used as separation paper, lithium manganate is used as a positive electrode, lithium titanate is used as a negative electrode, solid polyethylene glycol and water are used as solvents in electrolyte, and lithium bistrifluoromethanesulfonylimide and lithium bistrifluoromethylsulfonyl imide are used as electrolytes; the mass ratio of the solid polyethylene glycol to the water is 8:2-9:1, the electrolyte concentration is 5-11mol/kg, and the molar ratio of the lithium ions to the water is reduced to below 1: 1.
2. The aqueous lithium titanate cell of claim 1, wherein the electrolyte is a single lithium salt or a mixture of lithium salts.
3. The aqueous lithium titanate battery according to claim 1, wherein the lithium titanate electrode uses acetylene black or aluminum powder or aluminum wire as a conductive agent, and the mass ratio of the acetylene black to the aluminum is 0 to 1.
4. The aqueous lithium titanate battery of claim 1, wherein the current collector is a porous current collector comprising a porous carbon cloth or a porous aluminum foil.
5. The method of producing an aqueous lithium titanate battery according to any one of claims 1 to 4, wherein the lithium manganate electrode is produced by: acetylene black: the adhesive is prepared from the following components in percentage by weight: 1:1, dispersing and pulping, then coating on a porous aluminum foil, compacting and drying; preparing a lithium titanate electrode, wherein the lithium titanate: acetylene black or \ and aluminum powder: the adhesive is prepared from the following components in percentage by weight: 1:1 (the mass ratio of acetylene black or/and aluminum powder is 0-1) is uniformly dispersed to prepare slurry, then the slurry is coated on a porous aluminum foil, and the porous aluminum foil is compacted and dried at 5-10 MPa; the drying temperature is 75-85 ℃.
6. The method for preparing an aqueous lithium titanate battery according to claim 5, wherein the lithium titanate battery is packaged with a vent valve or a package having a through hole; the gas generated by the decomposition of the electrolyte is released through the pores.
7. The method of claim 5, wherein the outer casing of the lithium titanate battery is coated with a hydrophobic coating, and the hydrophobic coating is paraffin or super-hydrophobic nano-material.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015086256A (en) * 2013-10-29 2015-05-07 株式会社大成化研 Granular or pasty fluid containing carbon nano-tube
US20150214555A1 (en) * 2011-11-15 2015-07-30 Polyplus Battery Company Lithium sulfur batteries and electrolytes and sulfur cathodes thereof
JP2015191781A (en) * 2014-03-28 2015-11-02 日産自動車株式会社 Electrolyte for zinc secondary batteries and zinc secondary battery
CN105449294A (en) * 2014-09-26 2016-03-30 苏州宝时得电动工具有限公司 Battery
WO2017142990A1 (en) * 2016-02-17 2017-08-24 Eos Energy Storage, Llc Halogen-based electrolyte containing carbon
CN107256986A (en) * 2017-07-27 2017-10-17 中国科学院宁波材料技术与工程研究所 A kind of aqueous electrolyte and Water based metal ion battery
US20170301949A1 (en) * 2015-02-12 2017-10-19 Fujifilm Corporation All solid state secondary battery, solid electrolyte composition used therefor, electrode sheet for battery using the same, and method for manufacturing electrode sheet for battery and all solid state secondary battery
CN110429267A (en) * 2019-08-19 2019-11-08 河南师范大学 The method for preparing nanoscale flake sodium-ion battery positive material using multi-template agent

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150214555A1 (en) * 2011-11-15 2015-07-30 Polyplus Battery Company Lithium sulfur batteries and electrolytes and sulfur cathodes thereof
JP2015086256A (en) * 2013-10-29 2015-05-07 株式会社大成化研 Granular or pasty fluid containing carbon nano-tube
JP2015191781A (en) * 2014-03-28 2015-11-02 日産自動車株式会社 Electrolyte for zinc secondary batteries and zinc secondary battery
CN105449294A (en) * 2014-09-26 2016-03-30 苏州宝时得电动工具有限公司 Battery
US20170301949A1 (en) * 2015-02-12 2017-10-19 Fujifilm Corporation All solid state secondary battery, solid electrolyte composition used therefor, electrode sheet for battery using the same, and method for manufacturing electrode sheet for battery and all solid state secondary battery
WO2017142990A1 (en) * 2016-02-17 2017-08-24 Eos Energy Storage, Llc Halogen-based electrolyte containing carbon
CN107256986A (en) * 2017-07-27 2017-10-17 中国科学院宁波材料技术与工程研究所 A kind of aqueous electrolyte and Water based metal ion battery
CN110429267A (en) * 2019-08-19 2019-11-08 河南师范大学 The method for preparing nanoscale flake sodium-ion battery positive material using multi-template agent

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MITHA ET AL.: "Thixotropic gel electrolyte containing poly(ethylene glycol) with high zinc ion concentration for the secondary aqueous Zn/LiMn2O4 battery", 《JOURNAL OF ELECTROANALYTICAL CHEMISTRY》 *

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