CN1949563A - High safety performance lithium ion cell and preparing method thereof - Google Patents
High safety performance lithium ion cell and preparing method thereof Download PDFInfo
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- CN1949563A CN1949563A CNA200610117594XA CN200610117594A CN1949563A CN 1949563 A CN1949563 A CN 1949563A CN A200610117594X A CNA200610117594X A CN A200610117594XA CN 200610117594 A CN200610117594 A CN 200610117594A CN 1949563 A CN1949563 A CN 1949563A
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- ion battery
- lithium ion
- positive electrode
- lifepo
- cathode material
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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
- 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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Abstract
The invention belongs to electrochemical technical field, concretely a high safety Li ion battery and the preparing method thereof, where anode material of the Li ion battery comprises routine anode materials, ternary anode mateiral and Li Fe phosphite, and the Li ion battery is made by routine process. And the making method of the Li ion battery is simple, very easy to implement, having wide raw material sources, and low-cost. And the made Li ion battery has advantages of good overcharge resistance, etc. And it can be used as power supply to various small-power delectronic devices and large-power electric driven tools.
Description
Technical field
The invention belongs to technical field of electrochemistry, be specifically related to high lithium ion battery of a kind of security performance and preparation method thereof.
Background technology
As everyone knows, there is certain safety problem in lithium ion battery at present, if preparation industry or condition control are not tight, will produce security incident.2006 the most noticeable be exactly the Sony corporation of Japan manufacturing, phenomenon on fire takes place with lithium ion battery and recalls on a large scale in notebook computer, causes very big loss, the cost of wherein recalling just reaches 3,000,000,000 dollars.In order to improve the security performance of lithium ion battery, present main method be the additive that in electrolyte, adds anti-flammability (referring to Wu Yu equality, " lithium ion battery-use and put into practice " the 9th chapter, " non-aqueous electrolyte ", 2004, Beijing, Chemical Industry Press publishes).
Although said method can improve the security performance of lithium ion battery, add the additive of anti-flammability after, the ionic conductivity of electrolyte has reduced, the rate charge-discharge performance of the lithium ion battery of preparation has obtained deterioration, is necessary to be further improved.
Summary of the invention
In order to overcome the above-mentioned safety problem of lithium ion battery, the present inventor is carrying out research extensively and profoundly to the lithium ion battery field, find common positive electrode is mixed with tertiary cathode material and LiFePO 4, preparation is used for the positive electrode of lithium ion battery, other preparation technology is identical with common lithium ion battery with condition, and the lithium ion battery of preparation has good security performance.
The purpose of this invention is to provide high lithium ion battery of a kind of security performance and preparation method thereof.
Another object of the present invention provides a kind of application by the high lithium ion battery of the security performance of the inventive method preparation, and the lithium ion battery that this security performance is high can be used as the electrical source of power of various little electronic devices and big electric tool.
The safe lithium ion battery that the present invention proposes, its positive electrode are by the positive electrode of conventional lithium ion battery, and tertiary cathode material and LiFePO 4 are pressed the certain mass mixed and formed.Other preparation technologies are with common lithium ion battery.
The high preparation method of lithium ion battery of security performance that the present invention proposes, concrete steps are as follows:
1) common positive electrode is mixed with tertiary cathode material and LiFePO 4, obtain positive electrode;
2) the above-mentioned positive electrode that mixes is prepared into the positive pole of lithium ion battery according to the anode slice of lithium ion battery manufacturing process of routine;
3) will be prepared into the negative pole of lithium ion battery according to the lithium ion battery negative pole piece manufacturing process of routine;
4) lithium ion battery packaging technology, chemical synthesis technology routinely is prepared into lithium ion battery.
Above-mentioned steps 1) in, common positive electrode comprises LiCoO
2, LiMn
2O
4Perhaps their alloy, the perhaps mixture of their arbitrary proportions.
Above-mentioned steps 1) in, tertiary cathode material is Li[Co
xNi
yMn
1-x-y] (0＜x, y＜1), or its alloy.
Above-mentioned steps 1) in, LiFePO 4 removes LiFePO
4The alloy that also comprises it outward.
Above-mentioned steps 1) in, common positive electrode, tertiary cathode material, LiFePO
4Ratio be 0.1-100: 0.1-100: 0.1-100 (mass ratio).
Above-mentioned steps 1) in, mixed process can be carried out in the mixing apparatus of various routines, as ball mill, inclined mill, cone-type mixer, three-dimensional mixer and V-Mixer.
In the inventive method, by with the mixing as positive electrode of common positive electrode and tertiary cathode material and LiFePO 4, the lithium ion battery that obtains has tangible overcharging resisting, crosses and put performance, and security performance is significantly improved.
Advantage of the present invention is:
(1) preparation method is simple, safety;
(2) resulting product has good overcharging resisting, crosses and put performance.
The lithium ion battery that security performance involved in the present invention is high has widely to be used, and this lithium ion battery can be used as the electrical source of power of various little electronic devices and big electric tool.
These purposes of the present invention and other purposes, feature and advantage will become clearer after reading whole specification in conjunction with the accompanying drawings.
Embodiment
The present invention below will be described in more detail by specific embodiment, but protection scope of the present invention is not limited to these embodiment.
Comparative Examples 1
Adopt LiCoO
2As positive electrode, be prepared into lithium ion battery according to the method for routine.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire takes place.
Comparative Examples 2
Adopt LiMn
2O
4As positive electrode, be prepared into lithium ion battery according to the method for routine.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire takes place.
Embodiment 1
With LiCoO
2, Li[Co
1/3Ni
1/3Mn
1/3] and LiZn
0.01Fe
0.99PO
4Evenly mix in ball mill with 0.1: 100: 20 ratio of mass ratio, as positive electrode.Method according to routine is prepared into lithium ion battery.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire does not take place.
Embodiment 2
The mass ratio of the material among the embodiment 1 is become 50: 50: 10, and other condition is identical with embodiment 1.Method according to routine is prepared into lithium ion battery.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire does not take place.
Embodiment 3
With LiMn
2O
4, Li[Al
1/12Co
1/4Ni
1/3Mn
1/3] and LiFePO
4Evenly mix in three-dimensional mixer with 100: 100: 10 ratio of mass ratio, as positive electrode.Method according to routine is prepared into lithium ion battery.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire does not take place.
Embodiment 4
Except mass ratio became 50: 50: 30, other condition was identical with embodiment 1.Method according to routine is prepared into lithium ion battery.Then, under the overcharged voltage of 20V, overcharge experiment, the results are shown in the table 1.Find, when overcharging, phenomenon on fire does not take place.
The overcharging resisting test result of the lithium ion battery of table 1 Comparative Examples and embodiment preparation
| Numbering | The result |
| Comparative Examples 1 | On fire |
| Comparative Examples 2 | On fire |
| Embodiment 1 | Not on fire |
| Embodiment 2 | Not on fire |
| Embodiment 3 | Not on fire |
| Embodiment 4 | Not on fire |
By the contrast between above-mentioned Comparative Examples and the embodiment, can find out obviously that preparation method's technology of the present invention is simple, the lithium ion battery of preparation has good security performance.The electrical source of power that can be used for various little electronic devices and big electric tool.
Claims (4)
1, the high lithium ion battery of a kind of security performance is characterized in that the positive electrode of positive electrode by conventional lithium ion battery, and tertiary cathode material and LiFePO 4 mix to be formed, and wherein, described conventional positive electrode is LiCoO
2, LiMn
2O
4Or their alloy, the perhaps mixture of their arbitrary proportions; Described tertiary cathode material is Li[Co
xNi
yMn
1-x-y] (0＜x, y＜1), or its alloy; The mass ratio of common positive electrode, tertiary cathode material, LiFePO 4 is 0.1-100: 0.1-100: 0.1-100.
2, the high preparation method of lithium ion battery of a kind of security performance, concrete steps are as follows:
1) common positive electrode is mixed with tertiary cathode material and LiFePO 4, obtain positive electrode;
2) the above-mentioned positive electrode that mixes is prepared into the positive pole of lithium ion battery according to the anode slice of lithium ion battery manufacturing process of routine;
3) will be prepared into the negative pole of lithium ion battery according to the lithium ion battery negative pole piece manufacturing process of routine;
4) lithium ion battery packaging technology, chemical synthesis technology routinely is prepared into lithium ion battery;
Wherein said common positive electrode is LiCoO
2, LiMn
2O
4Or their alloy, the perhaps mixture of their arbitrary proportions; Described tertiary cathode material is Li[Co
xNi
yMn
1-x-y] (0＜x, y＜1), or its alloy; The mass ratio of common positive electrode, tertiary cathode material, LiFePO 4 is 0.1-100: 0.1-100: 0.1-100.
3, preparation method according to claim 1, LiFePO 4 removes LiFePO in the step 1)
4The alloy that also comprises it outward.
4, preparation method according to claim 1, the equipment that mixed process is used in the step 1) has ball mill, inclined mill, cone-type mixer, three-dimensional mixer or V-Mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610117594XA CN1949563A (en) | 2006-10-26 | 2006-10-26 | High safety performance lithium ion cell and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610117594XA CN1949563A (en) | 2006-10-26 | 2006-10-26 | High safety performance lithium ion cell and preparing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1949563A true CN1949563A (en) | 2007-04-18 |
Family
ID=38018992
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|---|---|---|---|
| CNA200610117594XA Pending CN1949563A (en) | 2006-10-26 | 2006-10-26 | High safety performance lithium ion cell and preparing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1949563A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295780B (en) * | 2007-04-28 | 2011-08-10 | 深圳市比克电池有限公司 | Anode active material composition of lithium ion secondary battery and battery |
| CN102544498A (en) * | 2012-03-12 | 2012-07-04 | 安徽安凯汽车股份有限公司 | Cathode material of lithium ion battery |
| CN103187583A (en) * | 2011-12-31 | 2013-07-03 | 深圳市雄韬电源科技股份有限公司 | Hybrid battery power supply system with self-regulation capability and manufacturing method thereof |
| CN104347880A (en) * | 2014-10-14 | 2015-02-11 | 东莞新能源科技有限公司 | Lithium ion battery capable of quick charging |
| CN104779377A (en) * | 2015-04-02 | 2015-07-15 | 深圳市沃特玛电池有限公司 | Method for improving safety performance of ternary battery |
| CN106328935A (en) * | 2016-08-30 | 2017-01-11 | 合肥国轩高科动力能源有限公司 | High-safety long-life composite material system power battery and preparation method thereof |
-
2006
- 2006-10-26 CN CNA200610117594XA patent/CN1949563A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295780B (en) * | 2007-04-28 | 2011-08-10 | 深圳市比克电池有限公司 | Anode active material composition of lithium ion secondary battery and battery |
| CN103187583A (en) * | 2011-12-31 | 2013-07-03 | 深圳市雄韬电源科技股份有限公司 | Hybrid battery power supply system with self-regulation capability and manufacturing method thereof |
| CN102544498A (en) * | 2012-03-12 | 2012-07-04 | 安徽安凯汽车股份有限公司 | Cathode material of lithium ion battery |
| CN104347880A (en) * | 2014-10-14 | 2015-02-11 | 东莞新能源科技有限公司 | Lithium ion battery capable of quick charging |
| CN104779377A (en) * | 2015-04-02 | 2015-07-15 | 深圳市沃特玛电池有限公司 | Method for improving safety performance of ternary battery |
| CN106328935A (en) * | 2016-08-30 | 2017-01-11 | 合肥国轩高科动力能源有限公司 | High-safety long-life composite material system power battery and preparation method thereof |
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Open date: 20070418 |