CN107579245A - A kind of charge rate lithium ion battery and preparation method thereof - Google Patents
A kind of charge rate lithium ion battery and preparation method thereof Download PDFInfo
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- CN107579245A CN107579245A CN201710835792.8A CN201710835792A CN107579245A CN 107579245 A CN107579245 A CN 107579245A CN 201710835792 A CN201710835792 A CN 201710835792A CN 107579245 A CN107579245 A CN 107579245A
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention discloses a kind of charge rate lithium ion battery and preparation method thereof, including anode sizing agent, cathode size；The anode sizing agent includes positive pole ternary material, conductive agent, binding agent, solvent, and the cathode size includes negative pole hard carbon material, conductive agent, binding agent, solvent；Grapheme material is added with the positive pole ternary material, 1% ~ 5% that adding proportion is positive pole ternary material weight, added with grapheme material, 0.5% ~ 3% that adding proportion is negative pole hard carbon material weight in the negative pole hard carbon material.The characteristics of Tilly graphene of the present invention, a certain proportion of grapheme material is added in positive and negative pole material, effectively improves the electric conductivity, heat conductivility and chemical stability of material, has been obviously improved the rate of charge performance of lithium ion battery, method is simple to operate, can put among practical application.
Description
Technical field
The present invention relates to lithium ion battery and preparation method thereof, and in particular to a kind of charge rate lithium ion battery and its
Preparation method.
Background technology
Graphene because it has a distinguished structure, excellent conduction and heat conductivility, high specific surface area with
And reliable chemical stability, it is of great interest in Study on Li-ion batteries field.
At present in lithium ion battery in the market, due to inherent shortcoming of the positive and negative pole material on conductive, heat conductivility, and
The problems such as use temperature range of electrolyte, the rate of charge performance of lithium ion battery rest on a relatively low level always,
Even so-called quick charging battery, rate of charge are also no more than 1C, therefore the longer charging interval still affects lithium-ion electric
The development in pond.
The content of the invention
Goal of the invention：Present invention aims in view of the shortcomings of the prior art, there is provided a kind of charge rate lithium-ion electric
Pond and preparation method thereof, can be greatly shortened the charging interval of lithium ion battery, and ensure service life.
Technical scheme：Charge rate lithium ion battery of the present invention, including anode sizing agent, cathode size；It is described
Anode sizing agent includes positive pole ternary material, conductive agent, binding agent, solvent, and the cathode size includes negative pole hard carbon material, conduction
Agent, binding agent, solvent；Grapheme material is added with the positive pole ternary material, adding proportion is positive pole ternary material weight
1% ~ 5%, in the negative pole hard carbon material added with grapheme material, adding proportion for negative pole hard carbon material weight 0.5% ~
3%。
Above-mentioned technical proposal is further improved, binding agent is Kynoar in the anode sizing agent, and adding proportion is just
The 2% ~ 4% of pole powder gross weight；Binding agent is Kynoar in the cathode size, and adding proportion is negative pole powder gross weight
2% ~ 4%.
Further, conductive agent is conductive black or carbon nano tube paste in the anode sizing agent, and adding proportion is respectively
The 1% ~ 3% of positive pole powder gross weight；Conductive agent is conductive black or carbon nano tube paste in the cathode size, and adding proportion is
The 1% ~ 3% of negative pole powder gross weight.
Further, the solvent is 1-METHYLPYRROLIDONE, wherein 1-METHYLPYRROLIDONE solvent and adhesive powder
Part by weight be 13 ~ 20：1.
The preparation method of above-mentioned charge rate lithium ion battery, comprises the following steps：
（1）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material with weight than 1% ~ 5%, is well mixed；Will
Mixed positive pole ternary material, conductive agent, binding agent, solvent are sufficiently mixed, until black even slurry is presented；
（2）Prepare cathode size：Grapheme material is added in negative pole hard carbon material with weight than 0.5% ~ 3%, is well mixed；
Mixed negative pole hard carbon material, conductive agent, binding agent, solvent are sufficiently mixed, until black even slurry is presented.
Further, binding agent is Kynoar in the anode sizing agent, and adding proportion is positive pole powder gross weight
2%~4%；Binding agent is Kynoar in the cathode size, and adding proportion is the 2% ~ 4% of negative pole powder gross weight；It is described just
Conductive agent is conductive black or carbon nano tube paste in the slurry of pole, and adding proportion is respectively the 1% ~ 3% of positive pole powder gross weight；Institute
It is conductive black or carbon nano tube paste to state conductive agent in cathode size, and adding proportion is the 1% ~ 3% of negative pole powder gross weight；Institute
It is 13 ~ 20 to state the part by weight that solvent is 1-METHYLPYRROLIDONE 1-METHYLPYRROLIDONE solvent and adhesive powder：1.
Beneficial effect：（1）Charge rate lithium ion battery provided by the invention and preparation method thereof, using ternary（Nickel
Cobalt manganic acid lithium）Material lithium-ion battery system of the hard carbon material as negative material, utilizes the spy of graphene as positive electrode
Point, a certain proportion of grapheme material is added in positive and negative pole material, effectively improve the electric conductivity of material, heat conductivility and
Chemical stability, the rate of charge performance of lithium ion battery is obviously improved, method is simple to operate, can put into practical application and work as
In.
（2）The method that the present invention improves positive and negative pole material electric conductivity, heat conductivility and chemical stability, so as to carry
High the rate of charge performance of lithium ion battery, its rate of charge performance can reach 4C ~ 10C.
（3）By battery applications provided by the invention in terms of portable power source, the charging interval can be greatly shortened.
（4）By taking 5Ah battery as an example, using 20A ~ 50A（That is 4C ~ 10C）Electric current charged, battery is in charging process
In maximum temperature scope be only 38 DEG C ~ 53 DEG C, composite safe standard（No more than 55 DEG C）, and cycle life up to 300 to
1000 times, such as it is applied to portable power source, can be fully charged in 15min, significantly faster than other like products on the market（Charging interval
Usually more than 2 hours）.
Embodiment
Be described in detail below by technical solution of the present invention, but protection scope of the present invention be not limited to it is described
Embodiment.
Embodiment 1：Charge rate preparation method of lithium ion battery provided by the invention, comprises the following steps：
（1）Positive pole slurry material is equipped with by following weight ratio：95% positive pole ternary material, 3% Kynoar, 2% conductive black,
The wherein grapheme material containing its weight 1% in positive pole ternary material, the weight of adhesive powder and 1-METHYLPYRROLIDONE solvent
Amount is than being 1：13；Negative pole slurry material is matched by following weight ratio：95% negative pole hard carbon material, 2% Kynoar, 3% conductive charcoal
Black, wherein the grapheme material containing its weight 0.5% in negative pole hard carbon material, adhesive powder are molten with 1-METHYLPYRROLIDONE
The weight ratio of agent is 1：13；
（2）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material, is well mixed, by mixed positive pole
Ternary material, conductive agent, binding agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；Prepare negative pole slurry
Material：Grapheme material is added in negative pole hard carbon material, is well mixed, by mixed negative pole hard carbon material, conductive agent, is glued
Knot agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；
（3）The both positive and negative polarity black even slurry that will be prepared, according to the production procedure of lithium ion battery, by coating, roll-in,
The processes such as cross cutting, film-making, lamination, fluid injection, encapsulation, chemical conversion, partial volume, square soft-package battery is made.
Embodiment 2：Charge rate preparation method of lithium ion battery provided by the invention, comprises the following steps：
（1）Positive pole slurry material is equipped with by following weight ratio：93% positive pole ternary material, 4% Kynoar, 3% CNT slurry
Material, wherein the grapheme material containing its weight 2.5% in positive pole ternary material, adhesive powder are molten with 1-METHYLPYRROLIDONE
The weight ratio of agent is 1：15；Negative pole slurry material is matched by following weight ratio：93% negative pole hard carbon material, 4% Kynoar, 3%
Grapheme material containing its weight 1.5% in carbon nano tube paste, wherein negative pole hard carbon material, adhesive powder and N- methyl
The weight ratio of pyrrolidinone solvent is 1：15；
（2）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material, is well mixed, by mixed positive pole
Ternary material, conductive agent, binding agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；Prepare negative pole slurry
Material：Grapheme material is added in negative pole hard carbon material, is well mixed, by mixed negative pole hard carbon material, conductive agent, is glued
Knot agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；
（3）The both positive and negative polarity black even slurry that will be prepared, according to the production procedure of lithium ion battery, by coating, roll-in,
The processes such as cross cutting, film-making, lamination, fluid injection, encapsulation, chemical conversion, partial volume, square soft-package battery is made.
Embodiment 3：Charge rate preparation method of lithium ion battery provided by the invention, comprises the following steps：
（1）Positive pole slurry material is equipped with by following weight ratio：97% positive pole ternary material, 2% Kynoar, 1% conductive black,
The wherein grapheme material containing its weight 4% in positive pole ternary material, the weight of adhesive powder and 1-METHYLPYRROLIDONE solvent
Amount is than being 1：20；Negative pole slurry material is matched by following weight ratio：97% negative pole hard carbon material, 2% Kynoar, 1% conductive charcoal
Black, wherein the grapheme material containing its weight 2.5% in negative pole hard carbon material, adhesive powder are molten with 1-METHYLPYRROLIDONE
The weight ratio of agent is 1：20；
（2）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material, is well mixed, by mixed positive pole
Ternary material, conductive agent, binding agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；Prepare negative pole slurry
Material：Grapheme material is added in negative pole hard carbon material, is well mixed, by mixed negative pole hard carbon material, conductive agent, is glued
Knot agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；
（3）The both positive and negative polarity black even slurry that will be prepared, according to the production procedure of lithium ion battery, by coating, roll-in,
The processes such as cross cutting, film-making, lamination, fluid injection, encapsulation, chemical conversion, partial volume, square soft-package battery is made.
Embodiment 4：Charge rate preparation method of lithium ion battery provided by the invention, comprises the following steps：
（1）Positive pole slurry material is equipped with by following weight ratio：：96% positive pole ternary material, 2% Kynoar, 2% CNT
Grapheme material containing its weight 3% in slurry, wherein positive pole ternary material, adhesive powder are molten with 1-METHYLPYRROLIDONE
The weight ratio of agent is 1：15；Negative pole slurry material is matched by following weight ratio：96% negative pole hard carbon material, 2% Kynoar, 2%
Grapheme material containing its weight 1.5% in carbon nano tube paste, wherein negative pole hard carbon material, adhesive powder and N- methyl
The weight ratio of pyrrolidinone solvent is 1：15；
（2）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material, is well mixed, by mixed positive pole
Ternary material, conductive agent, binding agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；Prepare negative pole slurry
Material：Grapheme material is added in negative pole hard carbon material, is well mixed, by mixed negative pole hard carbon material, conductive agent, is glued
Knot agent, solvent carry out being sufficiently mixed stirring, until black even slurry is presented；
（3）The both positive and negative polarity black even slurry that will be prepared, according to the production procedure of lithium ion battery, by coating, roll-in,
The processes such as cross cutting, film-making, lamination, fluid injection, encapsulation, chemical conversion, partial volume, square soft-package battery is made.
By taking 5Ah battery as an example, using 20A ~ 50A（That is 4C ~ 10C）Electric current charged, battery is in charging process
Maximum temperature scope be only 38 DEG C ~ 53 DEG C, composite safe standard（No more than 55 DEG C）, and cycle life up to 300 to
1000 times, such as it is applied to portable power source, can be fully charged in 15min, significantly faster than other like products on the market（Charging interval
Usually more than 2 hours）.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from
Various changes can be made in the form and details for it.
Claims (6)
1. a kind of charge rate lithium ion battery, including anode sizing agent, cathode size；The anode sizing agent includes positive pole ternary
Material, conductive agent, binding agent, solvent, the cathode size include negative pole hard carbon material, conductive agent, binding agent, solvent；It is special
Sign is：Grapheme material is added with the positive pole ternary material, 1% ~ 5% that adding proportion is positive pole ternary material weight,
Added with grapheme material, 0.5% ~ 3% that adding proportion is negative pole hard carbon material weight in the negative pole hard carbon material.
2. charge rate lithium ion battery according to claim 1, it is characterised in that：Binding agent in the anode sizing agent
For Kynoar, adding proportion is the 2% ~ 4% of positive pole powder gross weight；Binding agent is polyvinylidene fluoride in the cathode size
Alkene, adding proportion are the 2% ~ 4% of negative pole powder gross weight.
3. charge rate lithium ion battery according to claim 1, it is characterised in that：Conductive agent in the anode sizing agent
For conductive black or carbon nano tube paste, adding proportion is respectively the 1% ~ 3% of positive pole powder gross weight；Led in the cathode size
Electric agent is conductive black or carbon nano tube paste, and adding proportion is the 1% ~ 3% of negative pole powder gross weight.
4. charge rate lithium ion battery according to any one of claims 1 to 3, it is characterised in that：The solvent is N-
Methyl pyrrolidone, the wherein part by weight of 1-METHYLPYRROLIDONE solvent and adhesive powder are 13 ~ 20：1.
A kind of 5. method for preparing charge rate lithium ion battery described in claim 1, it is characterised in that including as follows
Step：
（1）Prepare anode sizing agent：Grapheme material is added in positive pole ternary material with weight than 1% ~ 5%, is well mixed；Will
Mixed positive pole ternary material, conductive agent, binding agent, solvent are sufficiently mixed, until black even slurry is presented；
（2）Prepare cathode size：Grapheme material is added in negative pole hard carbon material with weight than 0.5% ~ 3%, is well mixed；
Mixed negative pole hard carbon material, conductive agent, binding agent, solvent are sufficiently mixed, until black even slurry is presented.
6. according to the method for claim 5, it is characterised in that：Binding agent is Kynoar in the anode sizing agent, is added
Add 2% ~ 4% that ratio is positive pole powder gross weight；Binding agent is Kynoar in the cathode size, and adding proportion is negative pole
The 2% ~ 4% of powder gross weight；Conductive agent is conductive black or carbon nano tube paste in the anode sizing agent, and adding proportion is respectively
The 1% ~ 3% of positive pole powder gross weight；Conductive agent is conductive black or carbon nano tube paste in the cathode size, and adding proportion is
The 1% ~ 3% of negative pole powder gross weight；The solvent is 1-METHYLPYRROLIDONE, 1-METHYLPYRROLIDONE solvent and adhesive powder
Part by weight be 13 ~ 20：1.
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| CN201710835792.8A CN107579245A (en) | 2017-09-16 | 2017-09-16 | A kind of charge rate lithium ion battery and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777303A (en) * | 2018-05-29 | 2018-11-09 | 武汉工程大学 | A kind of biomass derived hard carbon/graphene anode material of lithium-ion battery and preparation method thereof |
| CN114085302A (en) * | 2021-11-16 | 2022-02-25 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
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| US20140038046A1 (en) * | 2012-08-01 | 2014-02-06 | Samsung Sdi Co., Ltd. | Anode, lithium battery comprising the anode, binder composition, and method of manufacturing the electrode |
| CN105336504A (en) * | 2015-09-24 | 2016-02-17 | 宁波南车新能源科技有限公司 | Hybrid capacitor battery |
| CN105810899A (en) * | 2016-03-10 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery |
| CN106169617A (en) * | 2016-09-30 | 2016-11-30 | 上海空间电源研究所 | A kind of space safety high power lithium ion accumulator |
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2017
- 2017-09-16 CN CN201710835792.8A patent/CN107579245A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20140038046A1 (en) * | 2012-08-01 | 2014-02-06 | Samsung Sdi Co., Ltd. | Anode, lithium battery comprising the anode, binder composition, and method of manufacturing the electrode |
| CN105336504A (en) * | 2015-09-24 | 2016-02-17 | 宁波南车新能源科技有限公司 | Hybrid capacitor battery |
| CN105810899A (en) * | 2016-03-10 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery |
| CN106169617A (en) * | 2016-09-30 | 2016-11-30 | 上海空间电源研究所 | A kind of space safety high power lithium ion accumulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777303A (en) * | 2018-05-29 | 2018-11-09 | 武汉工程大学 | A kind of biomass derived hard carbon/graphene anode material of lithium-ion battery and preparation method thereof |
| CN114085302A (en) * | 2021-11-16 | 2022-02-25 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
| CN114085302B (en) * | 2021-11-16 | 2023-03-14 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
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Application publication date: 20180112 |