CN101894971A - Lithium-ion secondary battery - Google Patents
Lithium-ion secondary battery Download PDFInfo
- Publication number
- CN101894971A CN101894971A CN2010101877525A CN201010187752A CN101894971A CN 101894971 A CN101894971 A CN 101894971A CN 2010101877525 A CN2010101877525 A CN 2010101877525A CN 201010187752 A CN201010187752 A CN 201010187752A CN 101894971 A CN101894971 A CN 101894971A
- Authority
- CN
- China
- Prior art keywords
- rechargeable battery
- lithium rechargeable
- lithium
- plate
- positive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a lithium-ion secondary battery. The lithium-ion secondary battery comprises which comprises a positive plate and a negative plate mutually wound or superposed, an isolating membrane spaced between the adjacent positive and negative plates, and electrolyte, wherein a polyethylene coating is distributed on the surface of the negative plate and/or the positive plate. The polyethylene coating distributed on the surface of the negative plate and/or the positive plate of the lithium-ion secondary battery can effectively protect the positive plate and the negative plate and improve the safety performance of the lithium-ion secondary battery.
Description
Technical field
The present invention relates to a kind of lithium rechargeable battery, especially a kind of lithium rechargeable battery with good safety energy.
Background technology
Lithium rechargeable battery is a kind of environmental protection battery, and along with development of science and technology, the lithium rechargeable battery with advantages such as energy height, reliability height and processability are good is favored gradually, is widely used in all kinds of portable electric appts.
Lithium rechargeable battery is in when charging, Li
+Take off embedding from positive pole, embed negative pole through electrolyte and barrier film, negative pole is in rich lithium attitude, and positive pole is in poor lithium attitude, and the compensation charge of electronics supplies on the negative pole from external circuit, guarantees the charge balance of negative pole; Lithium rechargeable battery is when discharge, and process is then just the opposite.With cobalt acid lithium (LiCoO
2) for positive active material, be that the battery of battery cathode active substance is an example with graphite, the charge and discharge process of lithium rechargeable battery is as follows:
In above-mentioned reaction equation, work as Li
xC
6In x=1 the time, Li
xC
6Be LiC
6LiC
6Have very high activity, the security performance of lithium rechargeable battery is generally along with LiC
6Content in negative pole increases and reduces rapidly.Existing lithium rechargeable battery reaches when completely filling, LiC
6Content in negative pole is very high, and the material with carbon element of nearly 90% (mol ratio) has changed into LiC
6When battery is short-circuited or be subjected to high temperature or other improper uses, battery will produce a large amount of heats, cause on fire easily even blast, cause serious potential safety hazard for the use of battery.
Existing lithium rechargeable battery generally comprises: reels mutually or the positive plate and the negative plate of stack, is interval in adjacent positive plate and the barrier film between the negative plate, and electrolyte.Wherein, positive plate comprise plus plate current-collecting body that general employing aluminium foil is made and attached on the plus plate current-collecting body, contain the anodal diaphragm of positive active material, negative plate comprise negative current collector that general employing Copper Foil is made and attached on the negative current collector, contain the cathode membrane of negative electrode active material, barrier film is the microporous membrane for adopting technologies such as plasticizing, extraction to make then, positive/negative plate is insulated and is used to keep containing the organic solvent electrolyte of lithium salts.The at present existing employed electrolyte of lithium rechargeable battery is inflammable organic electrolyte, and is therefore very high to the security requirement of lithium rechargeable battery.
But the positive plate of existing lithium rechargeable battery and negative plate all are to adopt metal collector, and manufacturing equipment also mostly is hardware, therefore has little metallic particles unavoidably and remains in the battery.In addition, be easy to produce burr with aluminium foil during as the cutting of the positive plate of plus plate current-collecting body, burr stings sometimes and is through the barrier film that plays insulating effect between positive plate and the negative plate, so that the aluminium foil plus plate current-collecting body contacts and is short-circuited with cathode membrane.Positive active material is at high temperature oxidized easily, and may cause inflammable organic electrolyte and catch fire, even causes battery explosion, has had a strong impact on the security performance of lithium rechargeable battery.
In view of this, necessary provide a kind of have good safety can lithium rechargeable battery.
Summary of the invention
The objective of the invention is to: a kind of lithium rechargeable battery with good safety energy is provided.
For achieving the above object, the invention provides a kind of lithium rechargeable battery, it comprises: mutually around the positive plate and the negative plate of volume or stack, be interval in adjacent positive plate and the barrier film between the negative plate, and electrolyte, wherein, the surface distributed of negative plate and/or positive plate has the layer of polyethylene coating.
With respect to prior art, lithium rechargeable battery of the present invention has the following advantages at least: the positive plate of lithium rechargeable battery and/or negative plate surface distributed have the layer of polyethylene coating, when polyethylene coating is distributed on the negative plate, can protect negative plate, make the burr of positive plate directly not contact with negative plate; When polyethylene coating is distributed in the positive plate surface, can improve the non-oxidizability of positive plate, the ability of electric current that reduces to discharge and shortening continuous discharge.When battery temperature raises, polyethylene coating is fusion film forming at a certain temperature also, cut off the ion path, avoid lithium rechargeable battery on fire even blast because of internal short-circuit when improper uses such as generation acupuncture, extruding, improved the security performance of lithium rechargeable battery.
As a kind of improvement of lithium rechargeable battery of the present invention, the thickness of described polyethylene coating is 2 μ m～20 μ m.
As a kind of improvement of lithium rechargeable battery of the present invention, the thickness of described polyethylene coating is 8 μ m.
As a kind of improvement of lithium rechargeable battery of the present invention, described polyethylene coating is distributed in the surface of described negative plate and/or positive plate by spraying or printing.
As a kind of improvement of lithium rechargeable battery of the present invention, described positive plate contains positive active material, and positive active material is selected from cobalt acid lithium, LiMn2O4, LiFePO4, lithium nickel cobalt manganese or its combination.
As a kind of improvement of lithium rechargeable battery of the present invention, described negative plate contains negative electrode active material, and negative electrode active material is selected from native graphite, Delanium, composite graphite or its combination.
As a kind of improvement of lithium rechargeable battery of the present invention, described barrier film is three layers of barrier film of polypropylene, polyethylene/polypropylene.
Description of drawings
Below in conjunction with the drawings and specific embodiments, describe lithium rechargeable battery of the present invention and useful technique effect thereof in detail, wherein:
Fig. 1 is the partial schematic sectional view of the electric core of lithium rechargeable battery of the present invention.
Fig. 2 is the temperature data contrast of electric core in lancing test of the electric core and the Comparative Examples lithium rechargeable battery of the embodiment of the invention 1 lithium rechargeable battery.
Fig. 3 is the voltage data contrast of electric core in lancing test of the electric core and the Comparative Examples lithium rechargeable battery of the embodiment of the invention 1 lithium rechargeable battery.
Fig. 4 is the electric core of the embodiment of the invention 1 lithium rechargeable battery and the electric core of Comparative Examples lithium rechargeable battery, under 25 ℃, keeps the data contrast with the 0.5C multiplying power at the capacity of voltage range 3.0-4.2V charge and discharge cycles.
Fig. 5 contrasts for the temperature curve that overcharges of the embodiment of the invention 2 lithium rechargeable batteries and Comparative Examples lithium rechargeable battery.
Fig. 6 overcharges the i-v curve of experiment for the Comparative Examples lithium rechargeable battery.
Fig. 7 overcharges the i-v curve of experiment for the embodiment of the invention 2 lithium rechargeable batteries.
Embodiment
Below in conjunction with the drawings and specific embodiments, describe lithium rechargeable battery of the present invention in detail, but embodiments of the invention are not limited thereto.Comparative Examples
The preparation of positive plate: with cobalt acid lithium (LiCoO
2) as the positive active material in the anodal diaphragm, it accounts for 95% of anodal diaphragm total weight; With polyvinylidene fluoride (PVDF) is binding agent, and it accounts for 2.5% of anodal diaphragm total weight; With conductive carbon (Super-p) is conductive agent, and it accounts for 2.5% of anodal diaphragm total weight.At N, mixing and stirring is made anode sizing agent in the N-dimethyl pyrrolidone (NMP) with above-mentioned powder, and anode sizing agent is uniformly coated on the aluminium foil that thickness is 14 μ m, and oven dry back compacting obtains certain thickness positive plate.
The preparation of negative plate: with graphite is negative electrode active material, and it accounts for 92% of cathode membrane total weight; With the CMC is thickener, and it accounts for 2.5% of cathode membrane total weight; With butadiene-styrene rubber is binding agent, and it accounts for 3.0% of cathode membrane total weight; With carbon dust (Super-p) is conductive agent, and it accounts for 2.5% of cathode membrane total weight.Above-mentioned powder is joined deionized water for stirring evenly make cathode size, cathode size is uniformly coated on the Copper Foil that thickness is 8 μ m, oven dry back compacting obtains certain thickness negative plate.
The preparation of barrier film: barrier film adopts three layers of barrier film of polypropylene, polyethylene/polypropylene (PP/PE/PP), and thickness is 20 μ m.
The preparation of lithium rechargeable battery: after above-mentioned positive plate, negative plate and barrier film superposeed successively, make battery by lamination or winding process; Battery is packed in the battery packages shell, inject electrolyte, after operation such as changing into, make lithium rechargeable battery.Wherein, electrolyte is that the lithium hexafluoro phosphate (LiPF6) of 1mol/L is a lithium salts with concentration, mixture with ethylene carbonate (EC), methyl ethyl carbonate (EMC) and dimethyl carbonate (DMC) is a solvent, and the mass ratio of each carbonic ether is EC: EMC: DMC=1: 1: 1, embodiment 1
The preparation of positive plate: with cobalt acid lithium (LiCoO
2) as the positive active material in the anodal diaphragm, it accounts for 95% of anodal diaphragm total weight; With polyvinylidene fluoride (PVDF) is binding agent, and it accounts for 2.5% of anodal diaphragm total weight; With conductive carbon (Super-p) is conductive agent, and it accounts for 2.5% of anodal diaphragm total weight.At N, mixing and stirring is made anode sizing agent in the N-dimethyl pyrrolidone (NMP) with above-mentioned powder, and anode sizing agent is uniformly coated on the aluminium foil that thickness is 14 μ m, and oven dry back compacting obtains certain thickness positive plate.
The preparation of negative plate: with graphite is negative electrode active material, and it accounts for 92% of cathode membrane total weight; With the CMC is thickener, and it accounts for 2.5% of cathode membrane total weight; With butadiene-styrene rubber is binding agent, and it accounts for 3.0% of cathode membrane total weight; With carbon dust (Super-p) is conductive agent, and it accounts for 2.5% of cathode membrane total weight.Above-mentioned powder is joined deionized water for stirring evenly make cathode size, cathode size is uniformly coated on the Copper Foil that thickness is 8 μ m, oven dry back compacting obtains certain thickness negative plate.
The preparation of polyethylene coating: the preparation polyethylene emulsion, solid content is between 5%～50%.Adopt spraying or printing process, polyethylene emulsion is handled on the surface of the negative plate that makes according to above-mentioned technology, obtain the polyethylene coating that thickness is about 8 μ m.
The preparation of barrier film: barrier film adopts three layers of barrier film of polypropylene, polyethylene/polypropylene (PP/PE/PP), and thickness is 20 μ m.
The preparation of lithium rechargeable battery: after above-mentioned positive plate, barrier film and treated negative plate superposeed successively, make battery by lamination or winding process; Battery is packed in the battery packages shell, inject electrolyte, after operation such as changing into, make lithium rechargeable battery.Wherein, electrolyte is the lithium hexafluoro phosphate (LiPF of 1mol/L with concentration
6) be lithium salts, be solvent with the mixture of ethylene carbonate (EC), methyl ethyl carbonate (EMC) and dimethyl carbonate (DMC), the mass ratio of each carbonic ether is EC: EMC: DMC=1: 1: 1,
The partial sectional view of the electric core of Zhi Bei lithium rechargeable battery as shown in Figure 1 according to the method described above, wherein, positive plate comprise adopt plus plate current-collecting body 60 that aluminium foil makes and attached on the plus plate current-collecting body 60, contain the anodal diaphragm 50 of positive active material, negative plate comprise adopt negative current collector 10 that Copper Foil makes and attached on the negative current collector 10, contain the cathode membrane 20 of negative electrode active material, 40 of barrier films are three layers of barrier film of polypropylene, polyethylene/polypropylene (PP/PE/PP), and the surface distributed of negative plate has layer of polyethylene coating 30.
The embodiment of the invention 1 lithium rechargeable battery and Comparative Examples lithium rechargeable battery are carried out lancing test respectively, testing process is as follows: with the to be tested electric core of the embodiment of the invention 1 lithium rechargeable battery and Comparative Examples lithium rechargeable battery respectively with the current charges of 0.5C multiplying power to 4.2V, after leaving standstill 1 hour, the nail that with diameter is 2.5mm carries out the acupuncture experiment at electric core center, and detect the voltage and the surface temperature of electric core in experimentation, test result as shown in Figures 2 and 3.Test result shows: the electric core of the embodiment of the invention 1 lithium rechargeable battery is not on fire in test process, do not explode, do not reveal, do not smolder.In the acupuncture experiment, the hot face temperature of electric core is about 100 ℃.Compare with the electric core of Comparative Examples lithium rechargeable battery, in the acupuncture experiment, after the embodiment of the invention 1 lithium ion secondary battery negative pole sheet surface distributed had polyethylene coating, temperature reduces greatly, and was not on fire, do not explode.
The electric core that Figure 4 shows that the electric core of the embodiment of the invention 1 lithium rechargeable battery and Comparative Examples lithium rechargeable battery under 25 ℃ with the loop test comparison diagram of 0.5C charging 0.5C discharge, as can be seen from the figure, proceeding to the 220th all circulation times, the capability retention of Comparative Examples lithium rechargeable battery is about 97%, the capability retention of the embodiment of the invention 1 lithium rechargeable battery is then about 96%, the result shows that the negative plate surface distributed has polyethylene coating that the cycle performance of lithium rechargeable battery is not had influence substantially.Embodiment 2
The preparation of positive plate: with cobalt acid lithium (LiCoO
2) as the positive active material in the anodal diaphragm, it accounts for 95% of anodal diaphragm total weight; With polyvinylidene fluoride (PVDF) is binding agent, and it accounts for 2.5% of anodal diaphragm total weight; With conductive carbon (Super-p) is conductive agent, and it accounts for 2.5% of anodal diaphragm total weight.At N, mixing and stirring is made anode sizing agent in the N-dimethyl pyrrolidone (NMP) with above-mentioned powder, and anode sizing agent is uniformly coated on the aluminium foil that thickness is 14 μ m, and oven dry back compacting obtains certain thickness positive plate.
The preparation of polyethylene coating: the preparation polyethylene emulsion, solid content is between 5%～50%.Adopt spraying or printing process, polyethylene emulsion is handled on the surface of the positive plate that makes according to aforementioned technology, obtain the polyethylene coating that thickness is about 8 μ m.
The preparation of negative plate: with graphite is negative electrode active material, and it accounts for 92% of cathode membrane total weight; With the CMC is thickener, and it accounts for 2.5% of cathode membrane total weight; With butadiene-styrene rubber is binding agent, and it accounts for 3.0% of cathode membrane total weight; With carbon dust (Super-p) is conductive agent, and it accounts for 2.5% of cathode membrane total weight.Above-mentioned powder is joined deionized water for stirring evenly make cathode size, cathode size is uniformly coated on the Copper Foil that thickness is 8 μ m, oven dry back compacting obtains certain thickness negative plate.
The preparation of barrier film: barrier film adopts three layers of barrier film of polypropylene, polyethylene/polypropylene (PP/PE/PP), and thickness is 20 μ m.
The preparation of lithium rechargeable battery: after above-mentioned negative plate, barrier film and treated positive plate superposeed successively, make battery by lamination or winding process; Battery is packed in the battery packages shell, inject electrolyte, after operation such as changing into, make lithium rechargeable battery.Wherein, electrolyte is the lithium hexafluoro phosphate (LiPF of 1mol/L with concentration
6) be lithium salts, be solvent with the mixture of ethylene carbonate (EC), methyl ethyl carbonate (EMC) and dimethyl carbonate (DMC), the mass ratio of each carbonic ether is EC: EMC: DMC=1: 1: 1,
The embodiment of the invention 2 lithium rechargeable batteries and Comparative Examples lithium rechargeable battery are carried out 3C/10V respectively overcharge test, testing process is as follows: with the to be tested electric core of the embodiment of the invention 2 lithium ion batteries and Comparative Examples lithium rechargeable battery with the current discharge of 1C multiplying power to 3.0V, electric current with the 3C multiplying power is charged to 10V with electric core again, the voltage of maintenance 10V 8 hours, test result such as Fig. 5 are to shown in Figure 7.Test result shows: the electric core of the embodiment of the invention 2 lithium rechargeable batteries is not on fire in test process, do not explode, do not smolder.In overcharging experiment, the hot face temperature of electric core is about 100 ℃.Because phenomenon on fire has just taken place in Comparative Examples lithium rechargeable battery at short notice in overcharging experiment, therefore do not keep the 10V constant voltage 8 hours.Compare with the electric core of Comparative Examples lithium rechargeable battery, in overcharging experiment, after the positive plate surface distributed of the embodiment of the invention 2 lithium rechargeable batteries had polyethylene coating, temperature reduces greatly, and was not on fire, do not explode.
Need to prove, in specific embodiments of the invention, though positive active material is that example is illustrated with cobalt acid lithium only, according to other embodiments of the invention, positive active material also can be LiMn2O4, LiFePO4, lithium nickel cobalt manganese, or the combination of above-mentioned positive active material; Negative electrode active material can be Delanium, composite graphite, or the combination of above-mentioned negative electrode active material; Though the thickness of the polyethylene coating of negative plate surface distributed is 8 μ m in the specific embodiments of the invention,, according to other embodiments of the invention, the thickness of polyethylene coating also can be the arbitrary value of 2 μ m～20 μ m.
Be understandable that, though in the specific embodiments of the invention, with negative plate surface and positive plate surface distributed polyethylene coating being arranged respectively is that example describes lithium rechargeable battery of the present invention, but according to other embodiments of the invention, polyethylene coating also can be distributed on positive plate and the negative plate simultaneously.
The announcement of book and guidance according to the above description, the technical staff of the technical field of the invention can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the present invention just for convenience of description.
Claims (7)
1. lithium rechargeable battery, it comprises: mutually around the positive plate and the negative plate of volume or stack, be interval in adjacent positive plate and the barrier film between the negative plate, and electrolyte, it is characterized in that: the surface distributed of described negative plate and/or positive plate has the layer of polyethylene coating.
2. lithium rechargeable battery according to claim 1 is characterized in that: the thickness of described polyethylene coating is 2 μ m～20 μ m.
3. lithium rechargeable battery according to claim 1 is characterized in that: the thickness of described polyethylene coating is 8 μ m.
4. lithium rechargeable battery according to claim 1 is characterized in that: it is the surface that is distributed in described negative plate and/or positive plate by spraying or printing that described polyethylene is coated with.
5. lithium rechargeable battery according to claim 1 is characterized in that: described positive plate contains positive active material, and positive active material is selected from cobalt acid lithium, LiMn2O4, LiFePO4, lithium nickel cobalt manganese or its combination.
6. lithium rechargeable battery according to claim 1 is characterized in that: described negative plate contains negative electrode active material, and negative electrode active material is selected from native graphite, Delanium, composite graphite or its combination.
7. lithium rechargeable battery according to claim 1 is characterized in that: described barrier film is three layers of barrier film of polypropylene, polyethylene/polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101877525A CN101894971A (en) | 2010-05-21 | 2010-05-21 | Lithium-ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101877525A CN101894971A (en) | 2010-05-21 | 2010-05-21 | Lithium-ion secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101894971A true CN101894971A (en) | 2010-11-24 |
Family
ID=43104096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101877525A Pending CN101894971A (en) | 2010-05-21 | 2010-05-21 | Lithium-ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101894971A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258987A (en) * | 2013-05-10 | 2013-08-21 | 深圳市量能科技有限公司 | Lithium ion battery and processing method of pole pieces of lithium ion battery |
| CN104282878A (en) * | 2013-07-10 | 2015-01-14 | 浙江万向亿能动力电池有限公司 | High-performance lithium titanate power battery |
| CN104347846A (en) * | 2013-07-26 | 2015-02-11 | 浙江南博电源科技有限公司 | Preparation method for safety-improved nickel-cobalt lithium manganate positive electrode sheet |
| CN109273695A (en) * | 2018-10-29 | 2019-01-25 | 安徽五行动力新能源有限公司 | A kind of iron phosphate compound anode material of lithium and preparation method thereof |
| CN113675401A (en) * | 2021-07-13 | 2021-11-19 | 天能电池集团股份有限公司 | Laminated lithium ion battery and negative pole piece thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07220759A (en) * | 1994-01-31 | 1995-08-18 | Sony Corp | Nonaqueous electrolyte secondary battery |
| CN1700500A (en) * | 2005-06-27 | 2005-11-23 | 东莞新能源电子科技有限公司 | Polymer Li-ion battery and method for manufacturing the same |
| CN1725547A (en) * | 2004-07-21 | 2006-01-25 | 上海比亚迪有限公司 | Lithium ion secondary battery |
| CN101019266A (en) * | 2004-12-13 | 2007-08-15 | 松下电器产业株式会社 | Lithium ion secondary battery |
| CN101662046A (en) * | 2009-09-18 | 2010-03-03 | 东莞新能源科技有限公司 | Lithium ion battery |
-
2010
- 2010-05-21 CN CN2010101877525A patent/CN101894971A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07220759A (en) * | 1994-01-31 | 1995-08-18 | Sony Corp | Nonaqueous electrolyte secondary battery |
| CN1725547A (en) * | 2004-07-21 | 2006-01-25 | 上海比亚迪有限公司 | Lithium ion secondary battery |
| CN101019266A (en) * | 2004-12-13 | 2007-08-15 | 松下电器产业株式会社 | Lithium ion secondary battery |
| CN1700500A (en) * | 2005-06-27 | 2005-11-23 | 东莞新能源电子科技有限公司 | Polymer Li-ion battery and method for manufacturing the same |
| CN101662046A (en) * | 2009-09-18 | 2010-03-03 | 东莞新能源科技有限公司 | Lithium ion battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258987A (en) * | 2013-05-10 | 2013-08-21 | 深圳市量能科技有限公司 | Lithium ion battery and processing method of pole pieces of lithium ion battery |
| CN103258987B (en) * | 2013-05-10 | 2016-09-07 | 深圳市量能科技有限公司 | A kind of lithium ion battery and the processing method of pole piece thereof |
| CN104282878A (en) * | 2013-07-10 | 2015-01-14 | 浙江万向亿能动力电池有限公司 | High-performance lithium titanate power battery |
| CN104347846A (en) * | 2013-07-26 | 2015-02-11 | 浙江南博电源科技有限公司 | Preparation method for safety-improved nickel-cobalt lithium manganate positive electrode sheet |
| CN109273695A (en) * | 2018-10-29 | 2019-01-25 | 安徽五行动力新能源有限公司 | A kind of iron phosphate compound anode material of lithium and preparation method thereof |
| CN113675401A (en) * | 2021-07-13 | 2021-11-19 | 天能电池集团股份有限公司 | Laminated lithium ion battery and negative pole piece thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113299876B (en) | Pole piece and lithium ion battery | |
| JP2015122340A (en) | Lithium secondary battery | |
| CN109119593B (en) | Lithium-copper composite electrode for pre-lithiation, pre-lithiation method and lithium ion battery | |
| CN109449478A (en) | Electrochemical appliance | |
| CN111613830B (en) | Composite electrolyte and application thereof | |
| CN104704652A (en) | Electrode plate for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using same, and manufacturing method for same | |
| CN102013469B (en) | Lithium-ion secondary battery and anode pole piece thereof | |
| CN102157753A (en) | Fast-charging high-power winding column type lithium ion battery | |
| CN102738505A (en) | Lithium ion storage device | |
| CN102544578A (en) | Lithium ion battery capable of improving comprehensive performance | |
| CN101662046A (en) | Lithium ion battery | |
| CN101924243A (en) | Lithium ion battery | |
| CN102427123A (en) | Lithium ion secondary battery and anode sheet thereof | |
| CN101609908A (en) | A kind of lithium ion battery | |
| CN104157466A (en) | Super lithium-ion capacitor and manufacturing method thereof | |
| CN101894971A (en) | Lithium-ion secondary battery | |
| CN101110477B (en) | Electro-chemistry energy storing and converting device | |
| CN102332600A (en) | Lithium ion battery | |
| CN102412387A (en) | Positive pole of lithium ion battery, and manufacturing method for positive pole, and lithium ion battery | |
| CN103280597A (en) | Lithium ion battery | |
| CN110249473A (en) | Non-aqueous electrolyte secondary battery | |
| CN101714656A (en) | Lithium-ion secondary battery | |
| KR20190084874A (en) | Nonaqueous electrolyte secondary battery | |
| CN103199259B (en) | Lithium rechargeable battery and cathode pole piece thereof | |
| CN101510597B (en) | Lithium ion battery and isolating film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101124 |