CN106299479A - A kind of formula of the high function type eletrolysis solution for lithium ion battery - Google Patents

A kind of formula of the high function type eletrolysis solution for lithium ion battery Download PDF

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CN106299479A
CN106299479A CN201610707957.9A CN201610707957A CN106299479A CN 106299479 A CN106299479 A CN 106299479A CN 201610707957 A CN201610707957 A CN 201610707957A CN 106299479 A CN106299479 A CN 106299479A
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organic solvent
weight percent
following materials
solvent
lithium
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CN106299479B (en
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罗剑
杨晨
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Binzhou Haichuan Biotechnology Co ltd
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Sichuan Jinli Vocal Electronic Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M10/0564—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
    • H01M10/0566—Liquid materials
    • H01M10/0567—Liquid materials characterised by the additives
    • 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
    • H01M10/0564—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
    • H01M10/0566—Liquid materials
    • H01M10/0569—Liquid materials characterised by the solvents
    • 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
    • H01M2300/0025—Organic electrolyte
    • H01M2300/0028—Organic electrolyte characterised by the solvent
    • H01M2300/0037—Mixture of solvents
    • H01M2300/0042—Four or more solvents
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention relates to the formula of a kind of high function type eletrolysis solution for lithium ion battery, its preparation method comprise the steps: (1) at dew point less than 40 DEG C, oxygen content less than in the environment of 2ppm, following materials is configured as organic solvent according to equal in quality ratio；(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；(3) addition occupies the following materials of machine solvent weight percent 5%～10% in organic solvent；(4) mixture in step (3) adds the following materials occupying machine solvent weight percent 5%～8%；(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, in nonaqueous electrolytic solution, adds the following lithium salts occupying machine solvent weight percent 40%～60% under stirring, after mix homogeneously, obtain this product.The process of the inventive method preparation electrolyte is simple, easy to operate, it is adaptable to commercial production.

Description

A kind of formula of the high function type eletrolysis solution for lithium ion battery
Technical field
The present invention relates to the formula of a kind of high function type eletrolysis solution for lithium ion battery, belong to lithium ion battery technology Field.
Background technology
Electrolyte is the important component part of lithium battery, and it is the ion playing conduction between battery positive and negative electrode Conductor, the performance of itself and the state of interface formed with both positive and negative polarity thereof largely affect the performance of battery.Excellent lithium Battery nonaqueous electrolytic solution should possess some requirement following: (1) chemical stability is good, with the both positive and negative polarity active substance in battery and collection There is not chemical reaction in fluid (general aluminium foil and Copper Foil)；(2) electrochemical stability window width；(3) ionic conductivity is high, electronics Electrical conductivity is low；(4) temperature range is properly that boiling point is high, and fusing point is low；(5) safety and low toxicity, non-environmental-pollution.
Lithium battery is the easily viscosity increase when transport and storage with nonaqueous electrolytic solution, and produces battery along with when storing Between prolongation, internal resistance the most constantly increases, especially when dioxolanes ratio is higher, electrolyte viscosity B coefficent and in battery Resistance impact aggravation.The main cause causing this phenomenon is in storage and transport process, and dioxolanes equal solvent is slowly polymerized, and acyclic acidic The existence of border, hot environment and metal cation can accelerate polyreaction.The most any its viscosity of stablizing is that individual needs solves Problem.
Summary of the invention
It is an object of the invention to provide the formula of a kind of high function type eletrolysis solution for lithium ion battery, can prepare steady Determine viscosity and reduce the electrolyte of lithium battery internal resistance, in order to using the most as required.
To achieve these goals, technical scheme is as follows.
The formula of a kind of high function type eletrolysis solution for lithium ion battery, its preparation method comprises the steps:
(1) at dew point less than-40 DEG C, oxygen content less than in the environment of 2ppm, following materials is joined according to equal in quality ratio Be set to as organic solvent: oxolane, Allyl carbonate, trifluoromethanesulfonic acid lithium, dimethyl sulfoxide, poly-aspartic-acid, to nitre Yl benzoic acid, hexafluoroacetylacetone, alkene sultone；
(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；
(3) add in organic solvent and occupy the following materials of machine solvent weight percent 5%～10%: CNT, Disilver carbonate powder, its mass ratio is 3～5:1；
(4) mixture in step (3) adds and occupies the following materials of machine solvent weight percent 5%～8%: Malaysia Acid imide, ferrous disulfide, stannous sulfate, its mass ratio is 2～4:3～5:1；
(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, adds in nonaqueous electrolytic solution under stirring and account for The following lithium salts of organic solvent percentage by weight 40%～60%: double oxalic acid borate lithiums, potassium manganate, lithium hexafluoro phosphate, its matter Amount ratio is 2～4:3～5:1, obtains this product after mix homogeneously.
Further, in step (5), controlling described temperature in adition process is 5 DEG C～10 DEG C.
This beneficial effect of the invention is: the viscosity in the case of storing 60 days of the electrolyte in the present invention does not occurs Change, effectively reduces the internal resistance after battery storage, and controls to add in nonaqueous electrolytic solution under specified temp lithium after injecting battery Salt, the most effectively stops electrolyte polyreaction after producing, transporting and inject battery, the process of the method preparation electrolyte Simply, easy to operate, it is adaptable to commercial production.
Detailed description of the invention
Below in conjunction with embodiment, the detailed description of the invention of the present invention is described, in order to be better understood from the present invention.
Embodiment 1
The formula of the high function type eletrolysis solution for lithium ion battery in the present embodiment, its preparation method includes walking as follows Rapid:
(1) at dew point less than-40 DEG C, oxygen content less than in the environment of 2ppm, following materials is joined according to equal in quality ratio Be set to as organic solvent: oxolane, Allyl carbonate, trifluoromethanesulfonic acid lithium, dimethyl sulfoxide, poly-aspartic-acid, to nitre Yl benzoic acid, hexafluoroacetylacetone, alkene sultone；
(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；
(3) add in organic solvent and occupy the following materials of machine solvent weight percent 5%: CNT, Disilver carbonate Powder, its mass ratio is 3:1；(4) mixture in step (3) adds the following thing occupying machine solvent weight percent 8% Material: maleimide, ferrous disulfide, stannous sulfate, its mass ratio is 2:3:1；
(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, adds in nonaqueous electrolytic solution under stirring and account for The following lithium salts of organic solvent percentage by weight 40%: double oxalic acid borate lithiums, potassium manganate, lithium hexafluoro phosphate, its mass ratio is 2:3:1, obtains this product after mix homogeneously.
In step (5), controlling described temperature in adition process is 5 DEG C.
Performance test data is as follows:
Electrolyte stores experiment
Viscosity before storing Viscosity after storing 30 days Viscosity after storing 60 days
1.18mPa·S 1.19mPa·S 1.19mPa·S
Inject internal resistance of cell change after lithium-ferrous disulfide AA battery
Internal resistance before storing Internal resistance after storing 30 days Internal resistance after storing 60 days
182mΩ 185mΩ 187mΩ
Embodiment 2
The formula of the high function type eletrolysis solution for lithium ion battery in the present embodiment, its preparation method includes walking as follows Rapid:
(1) at dew point less than-40 DEG C, oxygen content less than in the environment of 2ppm, following materials is joined according to equal in quality ratio Be set to as organic solvent: oxolane, Allyl carbonate, trifluoromethanesulfonic acid lithium, dimethyl sulfoxide, poly-aspartic-acid, to nitre Yl benzoic acid, hexafluoroacetylacetone, alkene sultone；
(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；
(3) add in organic solvent and occupy the following materials of machine solvent weight percent 10%: CNT, Disilver carbonate Powder, its mass ratio is 5:1；
(4) mixture in step (3) adds and occupies the following materials of machine solvent weight percent 5%: maleimide Amine, ferrous disulfide, stannous sulfate, its mass ratio is 4:5:1；
(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, adds in nonaqueous electrolytic solution under stirring and account for The following lithium salts of organic solvent percentage by weight 60%: double oxalic acid borate lithiums, potassium manganate, lithium hexafluoro phosphate, its mass ratio is 4:5:1, obtains this product after mix homogeneously.
In step (5), controlling described temperature in adition process is 10 DEG C.
Performance test data is as follows:
Electrolyte stores experiment
Viscosity before storing Viscosity after storing 30 days Viscosity after storing 60 days
1.23mPa·S 1.23mPa·S 1.27mPa·S
Inject internal resistance of cell change after lithium-ferrous disulfide AA battery
Internal resistance before storing Internal resistance after storing 30 days Internal resistance after storing 60 days
192mΩ 194mΩ 195mΩ
Embodiment 3
The formula of the high function type eletrolysis solution for lithium ion battery in the present embodiment, its preparation method includes walking as follows Rapid:
(1) at dew point less than-40 DEG C, oxygen content less than in the environment of 2ppm, following materials is joined according to equal in quality ratio Be set to as organic solvent: oxolane, Allyl carbonate, trifluoromethanesulfonic acid lithium, dimethyl sulfoxide, poly-aspartic-acid, to nitre Yl benzoic acid, hexafluoroacetylacetone, alkene sultone；
(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；
(3) add in organic solvent and occupy the following materials of machine solvent weight percent 8%: CNT, Disilver carbonate Powder, its mass ratio is 4:1；
(4) mixture in step (3) adds and occupies the following materials of machine solvent weight percent 6%: maleimide Amine, ferrous disulfide, stannous sulfate, its mass ratio is 3:4:1；
(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, adds in nonaqueous electrolytic solution under stirring and account for The following lithium salts of organic solvent percentage by weight 50%: double oxalic acid borate lithiums, potassium manganate, lithium hexafluoro phosphate, its mass ratio is 3:4:1, obtains this product after mix homogeneously.
In step (5), controlling described temperature in adition process is 8 DEG C.
Performance test data is as follows:
Electrolyte stores experiment
Viscosity before storing Viscosity after storing 30 days Viscosity after storing 60 days
1.38mPa·S 1.38mPa·S 1.41mPa·S
Inject internal resistance of cell change after lithium-ferrous disulfide AA battery
Internal resistance before storing Internal resistance after storing 30 days Internal resistance after storing 60 days
179mΩ 180mΩ 182mΩ
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (2)

1. the formula for the high function type eletrolysis solution of lithium ion battery, it is characterised in that: its preparation method includes as follows Step:
(1) at dew point less than-40 DEG C, oxygen content less than in the environment of 2ppm, following materials is configured to according to equal in quality ratio For organic solvent: oxolane, Allyl carbonate, trifluoromethanesulfonic acid lithium, dimethyl sulfoxide, poly-aspartic-acid, p-nitrophenyl Formic acid, hexafluoroacetylacetone, alkene sultone；
(2) moisture of above-mentioned organic solvent is reduced to below 8ppm；
(3) add in organic solvent and occupy the following materials of machine solvent weight percent 5%～10%: CNT, carbonic acid Silver powder, its mass ratio is 3～5:1；
(4) mixture in step (3) adds and occupies the following materials of machine solvent weight percent 5%～8%: maleimide Amine, ferrous disulfide, stannous sulfate, its mass ratio is 2～4:3～5:1；
(5), after the solvent temperature obtained in step (4) is down to 0～2 DEG C, adds in nonaqueous electrolytic solution under stirring and occupy machine The following lithium salts of solvent weight percent 40%～60%: double oxalic acid borate lithiums, potassium manganate, lithium hexafluoro phosphate, its mass ratio It is 2～4:3～5:1, after mix homogeneously, obtains this product.
The formula preparation method of the high function type eletrolysis solution for lithium ion battery the most according to claim 1, its feature Being: in described step (5), controlling described temperature in adition process is 5 DEG C～10 DEG C.
CN201610707957.9A 2016-08-23 2016-08-23 Formula of high-functional electrolyte for lithium ion battery Active CN106299479B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019000583A1 (en) * 2017-06-29 2019-01-03 谭柳 Lithium battery electrolyte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453036A (en) * 2007-12-04 2009-06-10 中信国安盟固利新能源科技有限公司 Non-aqueous electrolytic solution for lithium ion secondary battery and manufacturing method thereof
CN101771167A (en) * 2010-02-05 2010-07-07 九江天赐高新材料有限公司 High-capacity lithium-ion electrolyte, battery and preparation method of battery
CN101867064A (en) * 2010-06-11 2010-10-20 西安瑟福能源科技有限公司 Low temperature type lithium ion battery electrolyte with high temperature property and lithium ion battery
US20140072881A1 (en) * 2012-09-13 2014-03-13 National University Corporation Mie University Lithium battery
CN104900911A (en) * 2015-06-02 2015-09-09 中国东方电气集团有限公司 Lithium manganate battery electrolyte solution containing acidity removing agent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453036A (en) * 2007-12-04 2009-06-10 中信国安盟固利新能源科技有限公司 Non-aqueous electrolytic solution for lithium ion secondary battery and manufacturing method thereof
CN101771167A (en) * 2010-02-05 2010-07-07 九江天赐高新材料有限公司 High-capacity lithium-ion electrolyte, battery and preparation method of battery
CN101867064A (en) * 2010-06-11 2010-10-20 西安瑟福能源科技有限公司 Low temperature type lithium ion battery electrolyte with high temperature property and lithium ion battery
US20140072881A1 (en) * 2012-09-13 2014-03-13 National University Corporation Mie University Lithium battery
CN104900911A (en) * 2015-06-02 2015-09-09 中国东方电气集团有限公司 Lithium manganate battery electrolyte solution containing acidity removing agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019000583A1 (en) * 2017-06-29 2019-01-03 谭柳 Lithium battery electrolyte

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