CN106785035A - A kind of lithium-ion battery electrolytes and preparation method thereof - Google Patents

A kind of lithium-ion battery electrolytes and preparation method thereof Download PDF

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Publication number
CN106785035A
CN106785035A CN201611100925.9A CN201611100925A CN106785035A CN 106785035 A CN106785035 A CN 106785035A CN 201611100925 A CN201611100925 A CN 201611100925A CN 106785035 A CN106785035 A CN 106785035A
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CN
China
Prior art keywords
parts
carbonate
lithium
ion battery
kind
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CN201611100925.9A
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Chinese (zh)
Inventor
曾凡跃
Original Assignee
钦州市钦南区生产力促进中心
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Priority to CN201611100925.9A priority Critical patent/CN106785035A/en
Publication of CN106785035A publication Critical patent/CN106785035A/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/056Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564Accumulators 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
    • H01M10/0566Liquid materials
    • H01M10/0567Liquid materials characterised by the additives
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00Safety devices for primary or secondary batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0017Non-aqueous electrolytes
    • H01M2300/0025Organic electrolyte

Abstract

The invention discloses a kind of lithium-ion battery electrolytes and preparation method thereof, it is made up of following mass fraction formula components:68 parts of ethylene carbonate, 57 parts of isopropanol, 12 parts of additive, 68 parts of propene carbonate, 35 parts of diethyl carbonate, 3 parts of silica 1,46 parts of Ludox, 56 parts of dimethyl carbonate, 48 parts of vinylene carbonate, 46 parts of lithium hexafluoro phosphate, 35 parts of ethylene glycol, 68 parts of methyl ethyl carbonate, 68 parts of organic solvent, lithium-ion battery electrolytes prepared by the present invention, its security performance and temperature characterisitic are better than lithium ion battery liquid electrolyte.

Description

A kind of lithium-ion battery electrolytes and preparation method thereof

Technical field

The present invention relates to new energy field, in particular to a kind of lithium-ion battery electrolytes and preparation method thereof.

Background technology

Lithium ion battery is the best chargeable chemical cell of technical performance in the world at present, with operating voltage is high, ratio Energy is big, have extended cycle life, self discharge is small, memory-less effect, it is pollution-free the advantages of, be widely used in mobile communication, notebook electricity The fields such as brain, portable dam, electric bicycle, just gradually replace traditional lead-acid accumulator, as market application mainstream electricity Pond.Electrolyte studies the manufacturing technology to improving lithium ion battery as the important component of lithium ion battery to electrolyte Level is of great importance.The electrolyte of lithium ion battery is generally divided into two kinds of liquid electrolyte and gel state electrolyte, wherein, liquid State electrolyte electrochemical better performances, but security is poor, the phenomenon of leakage easily occurs, and temperature characterisitic is poor.Gel electrolyte liquid System the solvent molecule of free state is fixed among high-molecular gel skeleton, in the absence of or the less solvent that there is free state, because And be not easy to produce the phenomenon of leakage, the flammability of system is greatly reduced, thus with good security, but it is chemically Liquid electrolyte can be not so good as.

The content of the invention

The invention provides a kind of lithium-ion battery electrolytes and preparation method thereof, manufacture craft of the present invention is simple, chemistry The excellent lithium-ion battery electrolytes of excellent performance, good temp characteristic, security performance and preparation method.

To achieve the above object, the present invention provides following technical scheme:

A kind of lithium-ion battery electrolytes and preparation method thereof, are made up of following mass fraction formula components:Ethylene carbonate Ester 6-8 parts, isopropanol 5-7 parts, additive 1-2 parts, propene carbonate 6-8 parts, diethyl carbonate 3-5 parts, silica 1-3 Part, Ludox 4-6 parts, dimethyl carbonate 5-6 parts, vinylene carbonate 4-8 parts, lithium hexafluoro phosphate 4-6 parts, ethylene glycol 3-5 parts, Methyl ethyl carbonate 6-8 parts, organic solvent 6-8 parts.

Further:It is made up of following mass fraction formula components:6 parts of ethylene carbonate, 5 parts of isopropanol, 1 part of additive, 6 parts of propene carbonate, 3 parts of diethyl carbonate, silica 1 part, 4 parts of Ludox, 5 parts of dimethyl carbonate, vinylene carbonate 4 Part, 4 parts of lithium hexafluoro phosphate, 3 parts of ethylene glycol, 6 parts of methyl ethyl carbonate, 6 parts of organic solvent.

Further:It is made up of following mass fraction formula components:7 parts of ethylene carbonate, 6 parts of isopropanol, additive 1.5 Part, 7 parts of propene carbonate, 4 parts of diethyl carbonate, 2 parts of silica, 5 parts of Ludox, 5.5 parts of dimethyl carbonate, carbonic acid Asia second 6 parts of alkene ester, 5 parts of lithium hexafluoro phosphate, 4 parts of ethylene glycol, 7 parts of methyl ethyl carbonate, 7 parts of organic solvent.

Further:It is made up of following mass fraction formula components:8 parts of ethylene carbonate, 7 parts of isopropanol, 2 parts of additive, 8 parts of propene carbonate, 5 parts of diethyl carbonate, 3 parts of silica, 6 parts of Ludox, 6 parts of dimethyl carbonate, vinylene carbonate 8 Part, 6 parts of lithium hexafluoro phosphate, 5 parts of ethylene glycol, 8 parts of methyl ethyl carbonate, 8 parts of organic solvent.

Further:Preparation method of the present invention has following steps:

Step one, by ethylene carbonate, isopropanol, propene carbonate, diethyl carbonate, silica, dimethyl carbonate, Vinylene carbonate, lithium hexafluoro phosphate, methyl ethyl carbonate are well mixed according to corresponding weight portion;

Step 2, take corresponding weight portion ethylene glycol and heated, heating-up temperature is to 60~80 DEG C;

Step 3,2~3min will be stirred during the silicon of corresponding weight portion is molten and organic solvent adds mixer, added configured Good electrolyte and 1~2min of stirring, addition silica and the ethylene glycol for having heated and 3~5min of stirring, after stirring .

The beneficial effects of the invention are as follows:

1st, invention manufacture craft is simple, chemical property is excellent, good temp characteristic, security performance are excellent;

2nd, capacitance is big, long service life, suitable various electric drivers.

Specific embodiment

Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of protection of the invention.

Embodiment one:

A kind of lithium-ion battery electrolytes are made up of following mass fraction formula components:Ethylene carbonate 6-8 parts, isopropanol 5-7 parts, additive 1-2 parts, propene carbonate 6-8 parts, diethyl carbonate 3-5 parts, -3 parts of silica 1, Ludox 4-6 parts, Dimethyl carbonate 5-6 parts, vinylene carbonate 4-8 parts, lithium hexafluoro phosphate 4-6 parts, ethylene glycol 3-5 parts, methyl ethyl carbonate 6-8 Part, organic solvent 6-8 parts.

Embodiment two:

A kind of lithium-ion battery electrolytes are made up of following mass fraction formula components:6 parts of ethylene carbonate, isopropanol 5 Part, 1 part of additive, 6 parts of propene carbonate, 3 parts of diethyl carbonate, silica 1 part, 4 parts of Ludox, 5 parts of dimethyl carbonate, 4 parts of vinylene carbonate, 4 parts of lithium hexafluoro phosphate, 3 parts of ethylene glycol, 6 parts of methyl ethyl carbonate, 6 parts of organic solvent.

Embodiment three:

A kind of lithium-ion battery electrolytes are made up of following mass fraction formula components:7 parts of ethylene carbonate, isopropanol 6 Part, 1.5 parts of additive, 7 parts of propene carbonate, 4 parts of diethyl carbonate, 2 parts of silica, 5 parts of Ludox, dimethyl carbonate 5.5 parts, 6 parts of vinylene carbonate, 5 parts of lithium hexafluoro phosphate, 4 parts of ethylene glycol, 7 parts of methyl ethyl carbonate, 7 parts of organic solvent.

Example IV:

A kind of lithium-ion battery electrolytes are made up of following mass fraction formula components:8 parts of ethylene carbonate, isopropanol 7 Part, 2 parts of additive, 8 parts of propene carbonate, 5 parts of diethyl carbonate, 3 parts of silica, 6 parts of Ludox, 6 parts of dimethyl carbonate, 8 parts of vinylene carbonate, 6 parts of lithium hexafluoro phosphate, 5 parts of ethylene glycol, 8 parts of methyl ethyl carbonate, 8 parts of organic solvent.

Embodiment five:

A kind of preparation method preparation method of lithium-ion battery electrolytes comprises the following steps:

Step one, by ethylene carbonate, isopropanol, propene carbonate, diethyl carbonate, silica, dimethyl carbonate, Vinylene carbonate, lithium hexafluoro phosphate, methyl ethyl carbonate are well mixed according to corresponding weight portion;

Step 2, take corresponding weight portion ethylene glycol and heated, heating-up temperature is to 60~80 DEG C;

Step 3,2~3min will be stirred during the silicon of corresponding weight portion is molten and organic solvent adds mixer, added configured Good electrolyte and 1~2min of stirring, addition silica and the ethylene glycol for having heated and 3~5min of stirring, after stirring .

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined May be appreciated other embodiment.

Claims (5)

1. a kind of lithium-ion battery electrolytes, it is characterised in that:It is made up of following mass fraction formula components:
Ethylene carbonate 6-8 parts, isopropanol 5-7 parts, additive 1-2 parts, propene carbonate 6-8 parts, diethyl carbonate 3-5 parts, - 3 parts of silica 1, Ludox 4-6 parts, dimethyl carbonate 5-6 parts, vinylene carbonate 4-8 parts, lithium hexafluoro phosphate 4-6 parts, Ethylene glycol 3-5 parts, methyl ethyl carbonate 6-8 parts, organic solvent 6-8 parts.
2. a kind of lithium-ion battery electrolytes according to claim 1, it is characterised in that:It is formulated into by following mass fraction It is grouped into:
6 parts of ethylene carbonate, 5 parts of isopropanol, 1 part of additive, 6 parts of propene carbonate, 3 parts of diethyl carbonate, silica 1 Part, 4 parts of Ludox, 5 parts of dimethyl carbonate, 4 parts of vinylene carbonate, 4 parts of lithium hexafluoro phosphate, 3 parts of ethylene glycol, methyl ethyl carbonate 6 parts, 6 parts of organic solvent.
3. a kind of lithium-ion battery electrolytes according to claim 1, it is characterised in that:It is formulated into by following mass fraction It is grouped into:
7 parts of ethylene carbonate, 6 parts of isopropanol, 1.5 parts of additive, 7 parts of propene carbonate, 4 parts of diethyl carbonate, silica 2 Part, 5 parts of Ludox, 5.5 parts of dimethyl carbonate, 6 parts of vinylene carbonate, 5 parts of lithium hexafluoro phosphate, 4 parts of ethylene glycol, methyl ethyl carbonate 7 parts of ester, 7 parts of organic solvent.
4. a kind of lithium-ion battery electrolytes according to claim 1, it is characterised in that:It is formulated into by following mass fraction It is grouped into:
8 parts of ethylene carbonate, 7 parts of isopropanol, 2 parts of additive, 8 parts of propene carbonate, 5 parts of diethyl carbonate, silica 3 Part, 6 parts of Ludox, 6 parts of dimethyl carbonate, 8 parts of vinylene carbonate, 6 parts of lithium hexafluoro phosphate, 5 parts of ethylene glycol, methyl ethyl carbonate 8 parts, 8 parts of organic solvent.
5. a kind of a kind of preparation method of lithium-ion battery electrolytes according to claim 1, it is characterised in that:Including such as Lower step:
Step one, by ethylene carbonate, isopropanol, propene carbonate, diethyl carbonate, silica, dimethyl carbonate, carbonic acid Vinylene, lithium hexafluoro phosphate, methyl ethyl carbonate are well mixed according to corresponding weight portion;
Step 2, take corresponding weight portion ethylene glycol and heated, heating-up temperature is to 60~80 DEG C;
Step 3,2~3min will be stirred during the silicon of corresponding weight portion is molten and organic solvent adds mixer, it is configured good to add Electrolyte simultaneously stirs 1~2min, addition silica and the ethylene glycol for having heated and stirs 3~5min, after stirring.
CN201611100925.9A 2016-12-05 2016-12-05 A kind of lithium-ion battery electrolytes and preparation method thereof CN106785035A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1190494A (en) * 1996-05-09 1998-08-12 松下电器产业株式会社 Nonaqueous electrolyte secondary battery
US6148503A (en) * 1999-03-31 2000-11-21 Imra America, Inc. Process of manufacturing porous separator for electrochemical power supply
CN103682435A (en) * 2013-11-22 2014-03-26 深圳市迪凯特电池科技有限公司 Electrolyte for high-rate pulse discharge lithium ion battery
CN105932333A (en) * 2016-06-30 2016-09-07 普定县银丰农业科技发展有限公司 Lithium-ion battery electrolyte formula and preparation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1190494A (en) * 1996-05-09 1998-08-12 松下电器产业株式会社 Nonaqueous electrolyte secondary battery
US6148503A (en) * 1999-03-31 2000-11-21 Imra America, Inc. Process of manufacturing porous separator for electrochemical power supply
CN103682435A (en) * 2013-11-22 2014-03-26 深圳市迪凯特电池科技有限公司 Electrolyte for high-rate pulse discharge lithium ion battery
CN105932333A (en) * 2016-06-30 2016-09-07 普定县银丰农业科技发展有限公司 Lithium-ion battery electrolyte formula and preparation method

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Application publication date: 20170531