CN103259020A - Lithium battery positive pole material, lithium battery and preparation method of lithium battery - Google Patents
Lithium battery positive pole material, lithium battery and preparation method of lithium battery Download PDFInfo
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- CN103259020A CN103259020A CN201310176246XA CN201310176246A CN103259020A CN 103259020 A CN103259020 A CN 103259020A CN 201310176246X A CN201310176246X A CN 201310176246XA CN 201310176246 A CN201310176246 A CN 201310176246A CN 103259020 A CN103259020 A CN 103259020A
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- ion battery
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- conducting polymer
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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 embodiment of the invention aims at overcoming problems in the prior art, and provides a positive pole material, negative pole material or diaphragm material with high safety performance, good cycling performance and a good discharge effect. The embodiment of the invention further aims at providing a lithium battery containing the positive pole material, the negative pole material or the diaphragm material and the preparation method of the lithium battery. The application improves the safety performance, does not affect the cycling performance and the discharge performance of the battery, and has the characteristics of high safety performance, good cycling performance and good discharge effect.
Description
Technical field
The present invention relates to technical field of lithium batteries, be specifically related to anode material of lithium battery, lithium battery, and the lithium battery manufacture method.
Background technology
At present, the application of lithium ion battery has more and more widely extended to fields such as electric bicycle, battery-operated motor cycle and electric automobile always from the 3C field; As far back as 2007, Sony was just because lithium ion battery combustion incident in notebook computer, and that handles recalls, compensates and bring sony tremendous loss afterwards; In recent years, along with the increasing of lithium ion battery shipment amount, accidents such as the lithium ion battery explosion of producing all over the world, burning are also increasing gradually.Thereby it is the problem that lithium electricity industry is badly in need of solution that the security performance of lithium ion battery promotes.
In the industry this problem is taken much count of, the technology that some lithium ion batteries improve security performance constantly occurs, and Panasonic has applied at the beginning of 21 century that first negative terminal surface coated ceramic layer improves security performance; Dongguan new forms of energy Co., Ltd has applied for also that in 2007 both positive and negative polarity adds the patent that alundum (Al improves security performance; Energy-focusing battery Co., Ltd of DESAY has also applied for adding in the electrolyte patent that safe additive improves lithium ion battery security in 2009; Etc..And these technology all are to introduce the ceramic material of inertia, after adding, inert material increased the resistance of lithium ion battery, common defective is exactly that safety is improved DeGrain, and it is very big to the electrical property influence of lithium ion battery, and inconvenient operation, increase a lot of equipment investments and artificial investment.So this solution can not be satisfactory.
Summary of the invention
The purpose of the embodiment of the invention is to overcome the problems referred to above of prior art, and it is good to propose a kind of security performance height, good cycle, discharge effect
Positive electrode
Another purpose of the embodiment of the invention is to provide a kind of such material that contains
Lithium battery and this lithium battery manufacture method.
The design that the present invention takes is:
A kind of anode material for lithium-ion batteries comprises conducting polymer materials, conductive black.
Preferably, described conducting polymer materials is mixed by in polyethylene, high density polyethylene (HDPE), polypropylene, poly-propyl benzene, the Kynoar one or several.
Preferably, to account for total quality percentage be 3～8% to described conducting polymer materials.
A kind of lithium ion battery comprises anode pole piece, cathode pole piece, barrier film, and described anode pole piece comprises each described positive electrode of claim 1 to 3; Cathode pole piece comprises inorganic conductive material, the conductive black of positive temperature coefficient; Apply positive temperature coefficient inorganic material and/or positive temp coefficient high molecular conducting polymer on the barrier film.
Preferably, the inorganic conductive material of described positive temperature coefficient is barium titanate, vanadium trioxide, and one or several in the vanadic oxide mix.
Preferably, to account for cathode pole piece total quality percentage be 3～8%. to the inorganic conductive material of described positive temperature coefficient
Preferably, described positive temperature coefficient inorganic material is barium titanate, and described positive temp coefficient high molecular conducting polymer is polyethylene.
A kind of lithium ion battery manufacture method, may further comprise the steps: in anodal manufacture process, accounting for positive electrode total quality percentage is after 3～8% conducting polymer materials and other positive electrodes mix, add and stir the formation anode sizing agent in the solvent, described other positive electrodes comprise conductive black; In the negative pole manufacture process, after accounting for positive electrode total quality percentage and be 3～8% positive temperature coefficient inorganic conductive material and other negative materials and mixing, add to stir in the solvent and form cathode size, described other negative materials comprise conductive black; Apply barium titanate and/or polyethylene in diaphragms, this process recycling intaglio printing technology on the barrier film finished product applies such material of one deck.
Preferably, be the 3-5 micron at diaphragms coating barium titanate and/or poly thickness.
Preferably, accounting for positive electrode total quality percentage is after 5% polyethylene and other positive electrodes mix, and adds to stir in the solvent to form anode sizing agent; After accounting for negative material total quality percentage and be 5% brium carbonate and other negative materials and mixing, add to stir in the solvent and form cathode size.
In sum, the present invention has following significant beneficial effect:
1, the conducting polymer materials that adds positive temperature coefficient in the positive electrode, form the protection structure with conductive black, this protection structure is when the rising of lithium ion battery temperature is too fast, high molecular polymer sharply expands and blocking-up electronics path sharply rises the internal resistance of entire cell and becomes insulator, thereby guarantees the safety of lithium ion battery;
2, the conductive black that has added in the inorganic conductive material of adding positive temperature coefficient and the pole piece in the cathode pole piece forms the protection structure.The resistivity of such material can raise and raise along with temperature, when the high temperature that surpasses 120 ℃, the resistivity of such material can violently increase, thereby the internal resistance of cell is sharply risen, be similar to an insulator, cut off the safety that current path guarantees lithium ion battery.Such material is when temperature reduces, and resistivity can descend, and electronic conductance promotes, and can significantly promote the cryogenic discharging characteristic of lithium ion battery;
3, diaphragms applies the positive temperature coefficient inorganic material or applies the positive temp coefficient high molecular conducting polymer, when normal temperature, possesses good ion path through the barrier film that applies, when internal temperature of battery raises, the resistivity of PTC material can sharply rise, make the whole internal resistance of lithium ion battery sharply rise, and the function of realization current limliting is effectively protected battery, improves security performance;
4, the application has namely improved security performance, does not influence cycle performance, the discharge performance of battery again, has security performance height, good cycle, the good characteristics of discharge effect.
Embodiment
In order to allow those skilled in the art understand technical scheme of the present invention better, below the embodiment of the invention is further elaborated.
A kind of anode material for lithium-ion batteries, comprise conducting polymer materials, conductive black, described conducting polymer materials is mixed by in polyethylene, high density polyethylene (HDPE), polypropylene, poly-propyl benzene, the Kynoar one or several, and it is 3～8% that described conducting polymer materials accounts for total quality percentage.Conducting polymer materials and conductive black form the protection structure of similar PTC; when the rising of lithium ion battery temperature is too fast; high molecular polymer sharply expands and blocking-up electronics path sharply rises the internal resistance of entire cell and becomes insulator, guarantees the safety of lithium ion battery.
The embodiment of the invention provides a kind of lithium ion battery that uses above-mentioned positive electrode, comprises anode pole piece, cathode pole piece, barrier film, and described anode pole piece comprises described a kind of anode material for lithium-ion batteries; Cathode pole piece comprises inorganic conductive material, the conductive black of positive temperature coefficient; Apply positive temperature coefficient inorganic material and/or positive temp coefficient high molecular conducting polymer on the barrier film, the inorganic conductive material of described positive temperature coefficient is barium titanate, vanadium trioxide, in the vanadic oxide one or several mix, it is 3～8% that the inorganic conductive material of described positive temperature coefficient accounts for cathode pole piece total quality percentage, described positive temperature coefficient inorganic material is barium titanate, and described positive temp coefficient high molecular conducting polymer is polyethylene.
The embodiment of the invention provides above-mentioned lithium ion battery manufacture method, may further comprise the steps: in anodal manufacture process, accounting for positive electrode total quality percentage is after 3～8% conducting polymer materials and other positive electrodes mix, add and stir the formation anode sizing agent in the solvent, described other positive electrodes comprise conductive black; In the negative pole manufacture process, after accounting for positive electrode total quality percentage and be 3～8% positive temperature coefficient inorganic conductive material and other negative materials and mixing, add to stir in the solvent and form cathode size, described other negative materials comprise conductive black; Apply barium titanate and/or polyethylene in diaphragms, this process recycling intaglio printing technology on the barrier film finished product applies such material of one deck, is the 3-5 micron at diaphragms coating barium titanate and/or poly thickness.Other steps such as normal manufacturing process get final product.
Comparative Examples (representing with A in the form): be of a size of 6.0*65*157mm, capacity is the common lithium ion battery of 7500mAh.
Represent with B in the embodiment 1(form): accounting for total quality percentage in the positive electrode adding is 5% polyethylene. and after other positive electrodes mixing, add to stir in the solvent and form anode sizing agent, anode sizing agent is coated on the anodal base material, and other steps require consistent with Comparative Examples.
Represent with C in the embodiment 2(form): implementing on 1 the basis, adding at negative material that to account for total quality percentage be 5% barium titanate, and and after other negative materials mix, add to stir in the solvent and form cathode size, cathode size is coated on the base material of cathode.
Represent with D in the embodiment 3(form): implementing on 1 the basis, adding at negative material that to account for total quality percentage be 8% barium titanate, and and after other negative materials mix, add to stir in the solvent and form cathode size, cathode size is coated on the base material of cathode.
Represent with E in the embodiment 4(form); On the basis of embodiment 2, on barrier film, apply 4 microns barium titanate.
Through test, the security performance test result is as shown in table 1:
Cycle performance such as table 2:
Low temperature performance such as table 3:
From comparing result, positive pole has added polyethylene and has produced effect, and the battery that negative pole has added barium titanate has all passed through the security performance test, and each group security performance has had significantly raising.After adding PTC material, there is not influence substantially for cycle performance.After adding PTC material, cryogenic property has raising, and especially after negative pole added barium titanate, it is apparent in view that low temperature promotes amplitude.
Need to prove, in order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the application does simple the introduction to the accompanying drawing of implementing required use in the description, apparently, the accompanying drawing that the application describes only is embodiments of the invention, to those skilled in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.And under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. an anode material for lithium-ion batteries is characterized in that: comprise conducting polymer materials, conductive black.
2. a kind of anode material for lithium-ion batteries according to claim 1 is characterized in that: described conducting polymer materials is mixed by in polyethylene, high density polyethylene (HDPE), polypropylene, poly-propyl benzene, the Kynoar one or several.
3. a kind of anode material for lithium-ion batteries according to claim 2, it is characterized in that: the total quality percentage that described conducting polymer materials accounts for the anode pole piece is 3～8%.
4. lithium ion battery, it is characterized in that: comprise anode pole piece, cathode pole piece, barrier film, described anode pole piece comprises each described positive electrode of claim 1 to 3; Cathode pole piece comprises inorganic conductive material, the conductive black of positive temperature coefficient; Apply positive temperature coefficient inorganic material and/or positive temp coefficient high molecular conducting polymer on the barrier film.
5. a kind of lithium ion battery according to claim 4, it is characterized in that: the inorganic conductive material of described positive temperature coefficient is barium titanate, vanadium trioxide, one or several in the vanadic oxide mix.
6. a kind of lithium ion battery according to claim 5, it is characterized in that: it is 3～8% that the inorganic conductive material of described positive temperature coefficient accounts for cathode pole piece total quality percentage.
7. a kind of lithium ion battery according to claim 4, it is characterized in that: described positive temperature coefficient inorganic material is barium titanate, described positive temp coefficient high molecular conducting polymer is polyethylene.
8. a lithium ion battery manufacture method is characterized in that, may further comprise the steps:
In anodal manufacture process, accounting for positive electrode total quality percentage is after 3～8% conducting polymer materials and other positive electrodes mix, and adds to stir in the solvent to form anode sizing agent, and described other positive electrodes comprise conductive black;
In the negative pole manufacture process, after accounting for negative material total quality percentage and be 3～8% positive temperature coefficient inorganic conductive material and other negative materials and mixing, add to stir in the solvent and form cathode size, described other negative materials comprise conductive black;
Apply barium titanate and/or polyethylene in diaphragms, this process recycling intaglio printing technology on the barrier film finished product applies such material of one deck.
9. a kind of lithium ion battery manufacture method according to claim 8 is characterized in that: apply barium titanate and/or poly thickness is the 3-5 micron in diaphragms.
10. a kind of lithium ion battery manufacture method according to claim 9 is characterized in that: after accounting for positive electrode total quality percentage and be 5% polyethylene and other positive electrodes and mixing, add to stir in the solvent and form anode sizing agent; After accounting for negative material total quality percentage and be 5% brium carbonate and other negative materials and mixing, add to stir in the solvent and form cathode size.
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| CN201310176246XA CN103259020A (en) | 2013-05-14 | 2013-05-14 | Lithium battery positive pole material, lithium battery and preparation method of lithium battery |
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| CN201310176246XA CN103259020A (en) | 2013-05-14 | 2013-05-14 | Lithium battery positive pole material, lithium battery and preparation method of lithium battery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762404A (en) * | 2016-05-11 | 2016-07-13 | 深圳市量能科技有限公司 | Mixing material for lithium ion battery, power lithium ion battery and preparation method |
| CN106299203A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery organo-mineral complexing barrier film and preparation method thereof |
| CN106299218A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery positive temperature coefficient barrier film and preparation method thereof |
| CN106299219A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery blowout disk and preparation method thereof |
| CN106299217A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of composite diaphragm for lithium ion battery and preparation method thereof |
| CN106374136A (en) * | 2016-08-26 | 2017-02-01 | 浙江长兴金太阳电源有限公司 | Overheat-proof diaphragm used for lithium ion batteries and preparation method thereof |
| CN108091879A (en) * | 2017-12-18 | 2018-05-29 | 江苏双登富朗特新能源有限公司 | Highly secure lithium ion dynamic battery |
| CN109004219A (en) * | 2017-06-07 | 2018-12-14 | 银隆新能源股份有限公司 | A kind of lithium ion battery comprising rare earth modified barium titanium composite oxide |
| CN109713312A (en) * | 2018-12-26 | 2019-05-03 | 蜂巢能源科技有限公司 | Anode pole piece and preparation method thereof, lithium ion battery |
| WO2020098789A1 (en) * | 2018-11-16 | 2020-05-22 | 宁德时代新能源科技股份有限公司 | Electrochemical device |
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| CN1606183A (en) * | 2003-10-10 | 2005-04-13 | Lg电线有限公司 | Lithium secondary battery having ptc powder and manufacturing method thereof |
| CN101136471A (en) * | 2006-08-30 | 2008-03-05 | 比亚迪股份有限公司 | Electrode active material and method for making same and lithium ion secondary battery electrode |
| CN102324553A (en) * | 2011-09-02 | 2012-01-18 | 蔡道国 | Safe lithium ion battery |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762404A (en) * | 2016-05-11 | 2016-07-13 | 深圳市量能科技有限公司 | Mixing material for lithium ion battery, power lithium ion battery and preparation method |
| CN105762404B (en) * | 2016-05-11 | 2020-07-03 | 深圳市量能科技有限公司 | Mixed material for lithium ion battery, power lithium ion battery and preparation method |
| CN106299203A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery organo-mineral complexing barrier film and preparation method thereof |
| CN106299218A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery positive temperature coefficient barrier film and preparation method thereof |
| CN106299219A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of lithium ion battery blowout disk and preparation method thereof |
| CN106299217A (en) * | 2016-08-26 | 2017-01-04 | 浙江长兴金太阳电源有限公司 | A kind of composite diaphragm for lithium ion battery and preparation method thereof |
| CN106374136A (en) * | 2016-08-26 | 2017-02-01 | 浙江长兴金太阳电源有限公司 | Overheat-proof diaphragm used for lithium ion batteries and preparation method thereof |
| CN109004219A (en) * | 2017-06-07 | 2018-12-14 | 银隆新能源股份有限公司 | A kind of lithium ion battery comprising rare earth modified barium titanium composite oxide |
| CN108091879A (en) * | 2017-12-18 | 2018-05-29 | 江苏双登富朗特新能源有限公司 | Highly secure lithium ion dynamic battery |
| WO2020098789A1 (en) * | 2018-11-16 | 2020-05-22 | 宁德时代新能源科技股份有限公司 | Electrochemical device |
| US11189821B2 (en) | 2018-11-16 | 2021-11-30 | Contemporary Amperex Technology Co., Limited | Electrochemical device |
| CN109713312A (en) * | 2018-12-26 | 2019-05-03 | 蜂巢能源科技有限公司 | Anode pole piece and preparation method thereof, lithium ion battery |
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Application publication date: 20130821 |