CN108390100A - A kind of technique that fluorinated organic solvent prepares battery electrolyte - Google Patents
A kind of technique that fluorinated organic solvent prepares battery electrolyte Download PDFInfo
- Publication number
- CN108390100A CN108390100A CN201810014099.9A CN201810014099A CN108390100A CN 108390100 A CN108390100 A CN 108390100A CN 201810014099 A CN201810014099 A CN 201810014099A CN 108390100 A CN108390100 A CN 108390100A
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- Prior art keywords
- organic solvent
- fluorinated organic
- electrolyte
- battery electrolyte
- technique
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—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
- H01M10/0568—Liquid materials characterised by the solutes
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses the techniques that a kind of fluorinated organic solvent prepares battery electrolyte, include the following steps：S1：Raw material preparation：Using fluorinated organic solvent as one of primary raw material, while preparing lithium salts and additive, according to electrolyte material proportion, fluorinated organic solvent, lithium salts and additive are weighed by weighing apparatus；S2：Purification：Purification processes are carried out to the fluorinated organic solvent after the weighing described in S1, the fluorinated organic solvent after purification is detected by detecting instrument, unqualified needs continue to purify, and after detection is qualified in fluorinated organic solvent input products pot, wait to be used.The present invention passes through with battery electrolyte made of fluorinated organic solvent, be conducive to improve security performance of the battery under the states such as heated, overcharge, and there is good electrochemistry cycle performance and thermal stability, and convenient for being measured in real time to each step of production, improve the qualification rate of battery electrolyte.
Description
Technical field
The present invention relates to battery electrolyte technical fields more particularly to a kind of fluorinated organic solvent to prepare battery electrolyte
Technique.
Background technology
Three big main materials one of of the electrolyte as lithium ion battery, composition obtain high voltage, Gao Xing for battery
Energy important, lithium-ion battery electrolytes currently on the market are mostly used using LiPF6 as electrolytic salt, binary or ternary
Mixed high-purity organic carbonate esters compound（Such as EC, PC, DMC, DEC, EMC are）Solvent, and additive is added to change
Kind electrolyte property, such as improves battery capacity and safety, and electrolyte connects the various pieces of battery just as blood of human body
It is connected into an organic whole, carries the effect that positive and negative interpolar transmits charge in the battery, its specific capacity for battery, work
Temperature range, cycle efficieny, security performance and cost etc. are most important, and what is used at present is organic based on organic carbonate
Dicyandiamide solution is not competent, in the case where excessive charge and discharge, short circuit and high current work long hours, releases a large amount of heat,
Cause battery system internal temperature excessively high, becomes security risk；Charge/discharge capacity and cycle life also need further to be carried simultaneously
Height, and battery electrolyte is not easy to be detected each flow during preparation, is easy to cause the battery electricity produced
It is unqualified to solve liquid, therefore we have proposed the techniques that a kind of fluorinated organic solvent prepares battery electrolyte, for solving above-mentioned ask
Topic.
Invention content
Technical problems based on background technology, the present invention propose a kind of fluorinated organic solvent and prepare battery electrolyte
Technique.
A kind of fluorinated organic solvent proposed by the present invention prepares the technique of battery electrolyte, includes the following steps：
S1：Raw material preparation：Using fluorinated organic solvent as one of primary raw material, while preparing lithium salts and additive, according to electrolyte
Material proportion weighs fluorinated organic solvent, lithium salts and additive by weighing apparatus；
S2：Purification：To after the weighing described in S1 fluorinated organic solvent carry out purification processes, by detecting instrument to purification after
Fluorinated organic solvent be detected, unqualified needs continue to purify, and fluorinated organic solvent puts into product after detection is qualified
In tank, wait to be used；
S3：Reaction mixing：Qualified fluorinated organic solvent described in S2 is put into consersion unit, is matched according to electrolyte material
Than additive and lithium salts are added into consersion unit, carries out hybrid reaction, obtains electrolyte sample；
S4：Detection：The electrolyte sample described in S3 is detected by detecting instrument, if detection is unqualified, is needed pair
Electrolyte sample carries out timely processing, is detected again by detecting instrument after processing, until detection qualification, obtains battery electricity
Solve liquid；
S5：It is filling：The qualified battery electrolyte of detection described in S4 is poured into pail pack.
Preferably, in the S1, weighing apparatus is electronic balance and weighs bucket, will weigh bucket and is put on electronic balance, remembers
The numerical value shown by electronic balance is recorded, fluorinated organic solvent is imported and is weighed in bucket, according to electrolyte material proportion, is weighed quantitative
Fluorinated organic solvent, fluorinated organic solvent weigh after, after the same method, lithium salts and additive are weighed.
Preferably, in the S2, the fluorinated organic solvent after weighing is put into rectifying column, utilizes each group in mixture
Point there is different volatility, i.e. this different property of the vapour pressure of each component at the same temperature, makes the light component in liquid phase
(low-boiling-point substance) is transferred in gas phase, and the heavy constituent (high-boiling components) in gas phase is transferred in liquid phase, to realize that fluoro is organic molten
The purpose of agent and water separation, the fluorinated organic solvent after rectifying is carried out dehydrating again by molecular sieve.
Preferably, in the S2, testing instrument device includes gas chromatograph, liquid chromatograph, mass spectrograph and karl Fischer water
Divide analyzer, has to the fluoro after purification by gas chromatograph, liquid chromatograph, mass spectrograph and karl Fischer moisture teller
The moisture of solvent, conductivity, coloration, acidity are detected.
Preferably, in the S3, consersion unit is reaction kettle, fluorinated organic solvent is put into reaction kettle, to reaction kettle
Middle addition additive and lithium salts carry out heating stirring by reaction kettle to fluorinated organic solvent, additive and lithium salts.
Preferably, in the S5, the quality of pail pack is detected, after detection is qualified, battery electrolyte is poured into packet
In barrelling, it is filled with argon gas protection, is covered.
Beneficial effects of the present invention：With battery electrolyte made of fluorinated organic solvent, being conducive to improvement battery and existing
Security performance under the states such as heated, overcharge, and there is good electrochemistry cycle performance and thermal stability, and convenient for pair
Each step of production is measured in real time, and improves the qualification rate of battery electrolyte.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment
The technique that a kind of fluorinated organic solvent prepares battery electrolyte is proposed in the present embodiment, is included the following steps：
S1：Raw material preparation：Using fluorinated organic solvent as one of primary raw material, while preparing lithium salts and additive, according to electrolyte
Material proportion weighs fluorinated organic solvent, lithium salts and additive by weighing apparatus；
S2：Purification：Purification processes are carried out to the fluorinated organic solvent after the weighing in described in S1, by detecting instrument to purification after
Fluorinated organic solvent be detected, unqualified needs continue to purify, and fluorinated organic solvent puts into product after detection is qualified
In tank, wait to be used；
S3：Reaction mixing：Qualified fluorinated organic solvent in described in S2 is put into consersion unit, is matched according to electrolyte material
Than additive and lithium salts are added into consersion unit, carries out hybrid reaction, obtains electrolyte sample；
S4：Detection：The electrolyte sample in described in S3 is detected by detecting instrument, if detection is unqualified, is needed pair
Electrolyte sample carries out timely processing, is detected again by detecting instrument after processing, until detection qualification, obtains battery electricity
Solve liquid；
S5：It is filling：The qualified battery electrolyte of detection in described in S4 is poured into pail pack.
In the present embodiment, in S1, weighing apparatus is electronic balance and weighs bucket, will weigh bucket and is put on electronic balance, remembers
The numerical value shown by electronic balance is recorded, fluorinated organic solvent is imported and is weighed in bucket, according to electrolyte material proportion, is weighed quantitative
Fluorinated organic solvent, fluorinated organic solvent weigh after, after the same method, lithium salts and additive are weighed, in S2,
Fluorinated organic solvent after weighing is put into rectifying column, there is different volatility using each component in mixture, that is, exist
This different property of the vapour pressure of each component, makes the light component (low-boiling-point substance) in liquid phase be transferred in gas phase under same temperature, and
Heavy constituent (high-boiling components) in gas phase is transferred in liquid phase, to realize the purpose of fluorinated organic solvent and water separation, by rectifying
Fluorinated organic solvent afterwards is carried out dehydrating again by molecular sieve, and in S2, testing instrument device includes gas chromatograph, liquid phase color
Spectrometer, mass spectrograph and karl Fischer moisture teller pass through gas chromatograph, liquid chromatograph, mass spectrograph and karl Fischer water
Analyzer is divided to be detected the moisture of the fluorinated organic solvent after purification, conductivity, coloration, acidity, in S3, consersion unit is
Reaction kettle puts into fluorinated organic solvent in reaction kettle, additive and lithium salts is added into reaction kettle, by reaction kettle to fluoro
Organic solvent, additive and lithium salts carry out heating stirring, in S5, are detected to the quality of pail pack, will be electric after detection is qualified
Pond electrolyte pours into pail pack, is filled with argon gas protection, is covered, and beneficial effects of the present invention are to pass through fluorinated organic solvent
Manufactured battery electrolyte is conducive to improve security performance of the battery under the states such as heated, overcharge, and with good
Electrochemistry cycle performance and thermal stability, and convenient for being measured in real time to each step of production, improve battery electrolyte
Qualification rate.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. the technique that a kind of fluorinated organic solvent prepares battery electrolyte, which is characterized in that include the following steps：
S1：Raw material preparation：Using fluorinated organic solvent as one of primary raw material, while preparing lithium salts and additive, according to electrolyte
Material proportion weighs fluorinated organic solvent, lithium salts and additive by weighing apparatus；
S2：Purification：To after the weighing described in S1 fluorinated organic solvent carry out purification processes, by detecting instrument to purification after
Fluorinated organic solvent be detected, unqualified needs continue to purify, and fluorinated organic solvent puts into product after detection is qualified
In tank, wait to be used；
S3：Reaction mixing：Qualified fluorinated organic solvent described in S2 is put into consersion unit, is matched according to electrolyte material
Than additive and lithium salts are added into consersion unit, carries out hybrid reaction, obtains electrolyte sample；
S4：Detection：The electrolyte sample described in S3 is detected by detecting instrument, if detection is unqualified, is needed pair
Electrolyte sample carries out timely processing, is detected again by detecting instrument after processing, until detection qualification, obtains battery electricity
Solve liquid；
S5：It is filling：The qualified battery electrolyte of detection described in S4 is poured into pail pack.
2. the technique that a kind of fluorinated organic solvent according to claim 1 prepares battery electrolyte, which is characterized in that described
In S1, weighing apparatus is electronic balance and weighing bucket.
3. the technique that a kind of fluorinated organic solvent according to claim 1 prepares battery electrolyte, which is characterized in that described
In S2, the fluorinated organic solvent after weighing is put into rectifying column, there is different volatility using each component in mixture,
Fluorinated organic solvent after rectifying is carried out dehydrating again by molecular sieve.
4. the technique that a kind of fluorinated organic solvent according to claim 1 prepares battery electrolyte, which is characterized in that described
In S2, testing instrument device includes gas chromatograph, liquid chromatograph, mass spectrograph and karl Fischer moisture teller.
5. the technique that a kind of fluorinated organic solvent according to claim 1 prepares battery electrolyte, which is characterized in that described
In S3, consersion unit is reaction kettle, and fluorinated organic solvent is put into reaction kettle, and additive and lithium salts are added into reaction kettle.
6. the technique that a kind of fluorinated organic solvent according to claim 1 prepares battery electrolyte, which is characterized in that described
In S5, the quality of pail pack is detected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810014099.9A CN108390100A (en) | 2018-01-08 | 2018-01-08 | A kind of technique that fluorinated organic solvent prepares battery electrolyte |
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| CN201810014099.9A CN108390100A (en) | 2018-01-08 | 2018-01-08 | A kind of technique that fluorinated organic solvent prepares battery electrolyte |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354779A (en) * | 2019-07-12 | 2019-10-22 | 珠海光瑞新材料有限公司 | A kind of production method and process units of battery electrolyte |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299471A (en) * | 2008-06-10 | 2008-11-05 | 深圳市雷天电源技术有限公司 | Composite electrolytic solution of lithium ion power battery and preparation method thereof |
| CN105304940A (en) * | 2015-10-20 | 2016-02-03 | 四川科能锂电有限公司 | Lithium-ion battery electrolyte producing technology |
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- 2018-01-08 CN CN201810014099.9A patent/CN108390100A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299471A (en) * | 2008-06-10 | 2008-11-05 | 深圳市雷天电源技术有限公司 | Composite electrolytic solution of lithium ion power battery and preparation method thereof |
| CN105304940A (en) * | 2015-10-20 | 2016-02-03 | 四川科能锂电有限公司 | Lithium-ion battery electrolyte producing technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354779A (en) * | 2019-07-12 | 2019-10-22 | 珠海光瑞新材料有限公司 | A kind of production method and process units of battery electrolyte |
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