CN204651392U - A kind of anode pole piece of lithium ion battery - Google Patents
A kind of anode pole piece of lithium ion battery Download PDFInfo
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- CN204651392U CN204651392U CN201520384698.1U CN201520384698U CN204651392U CN 204651392 U CN204651392 U CN 204651392U CN 201520384698 U CN201520384698 U CN 201520384698U CN 204651392 U CN204651392 U CN 204651392U
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- lithium ion
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- ion battery
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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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Abstract
The utility model discloses a kind of anode pole piece of lithium ion battery, described anode active material layer is coated in current collector layers, described thermal insulation layer is uniformly coated in anode active material layer, described friction groove is evenly arranged in current collector layers, described three-dimensional clustering architecture layer is attached in anode active material layer, and described silicon coating is coated on three-dimensional clustering architecture layer.The anode pole piece of this lithium ion battery, the three-dimensional clustering architecture layer be polymerized by the taper carbon nano-tube covering silicon coating is compared with conventional graphite-based positive electrode, the lithium ion battery constructed shows the electrical and remarkable cyclical stability of very strong charge and discharge, current collector layers surface is provided with friction groove, by the method for this chemistry or physics, surface etch is carried out to collector, form rough surface, thus improve the adhesive force of collector and active material, not only can alleviate the change in volume of lithium ion cell electrode in charge and discharge process, but also the high-rate charge-discharge capability of alloy electrode can be improved.
Description
Technical field
The utility model relates to technical field of lithium ion, is specially a kind of anode pole piece of lithium ion battery.
Background technology
Lithium rechargeable battery, owing to having the advantage of high voltage, high-energy-density, becomes one of the widest secondary cell of range of application.Microminiaturized, the long standby development of portable electric appts, as the lithium ion battery of power supply, its energy density especially volume energy density constantly promotes, to meet the demand of increasingly sharpening.As the LiFePO since reported first such as Padhi in 1997
4reversibly embed and deintercalate lithium ions, since can be used as anode material for lithium-ion batteries, just caused the extensive concern of people.LiFePO
4there is safety, environmental protection, cheap, theoretical specific capacity is high, the series of advantages such as stable performance, likely become the desirable positive electrode of lithium ion battery of future generation especially electrokinetic cell.But pure LiFePO
4electronic conductivity extremely low, thus when causing its high current charge-discharge, capacity attenuation is rapid, the forthright difference of high power, because a little its conductance of raising is LiFePO
4main direction of studying.
In recent years, people constantly constantly explore in lithium ion anode material, and as a kind of cell positive material, element silicon receives a lot of concerns at present.If change the graphite positive pole commonly used in lithium ion battery into silicon positive pole, the total electricity of battery likely increases by 63%, and the weight of battery and size all can reduce about 40%.
Summary of the invention
The purpose of this utility model is the anode pole piece providing a kind of lithium ion battery, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of anode pole piece of lithium ion battery, comprise anode active material layer, current collector layers, three-dimensional clustering architecture layer, silicon coating, thermal insulation layer, friction groove, described anode active material layer is coated in current collector layers, described thermal insulation layer is uniformly coated in anode active material layer, described friction groove is evenly arranged in current collector layers, described three-dimensional clustering architecture layer is attached in anode active material layer, described silicon coating is coated on three-dimensional clustering architecture layer, and described silicon coating thickness is 4-9 micron.
Preferably, described three-dimensional clustering architecture layer is polymerized by least one group of taper carbon nano-tube.
Preferably, heat insulation hollow granule is provided with in described thermal insulation layer.
Preferably, described anode active material layer is made up of mangaic acid lithium layer, ferrous phosphate lithium layer, iron manganese phosphate lithium layer, vanadium phosphate lithium layer, cobalt acid lithium layer, mangaic acid lithium layer and ferrous metasilicate lithium layer.
Compared with prior art, the beneficial effects of the utility model are: the anode pole piece of this lithium ion battery, the three-dimensional clustering architecture layer be polymerized by the taper carbon nano-tube covered on silicon coating is compared with conventional graphite-based positive electrode, the lithium ion battery constructed shows the electrical and remarkable cyclical stability of very strong charge and discharge, its charging rate want fast on nearly 16 times, the total electricity of battery likely increases by 63% simultaneously, and the weight of battery and size all can reduce about 40%; Current collector layers surface is provided with friction groove, by the method for this chemistry or physics, surface etch is carried out to collector, form rough surface, thus improve the adhesive force of collector and active material, not only can alleviate the change in volume of lithium ion cell electrode in charge and discharge process, but also the high-rate charge-discharge capability of alloy electrode can be improved, compared with smooth copper sheet collector electrode, there is better cycle performance, the serviceability of lithium ion battery can be significantly improved.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1 anode active material layer, 2 current collector layers, 3 three-dimensional clustering architecture layers, 4 silicon coatings, 5 thermal insulation layers and 6 friction grooves.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of anode pole piece of lithium ion battery, comprise anode active material layer 1, current collector layers 2, three-dimensional clustering architecture layer 3, silicon coating 4, thermal insulation layer 5, friction groove 6, described anode active material layer 1 is coated in current collector layers 2, described anode active material layer 1 is by mangaic acid lithium layer, ferrous phosphate lithium layer, iron manganese phosphate lithium layer, vanadium phosphate lithium layer, cobalt acid lithium layer, mangaic acid lithium layer and ferrous metasilicate lithium layer composition, described thermal insulation layer 5 is uniformly coated in anode active material layer 1, heat insulation hollow granule is provided with in described thermal insulation layer 5, described heat insulation hollow short grained hollow volume and heat insulation hollow short grained volume ratio are 0.5, described friction groove 6 is evenly arranged in current collector layers 2, described three-dimensional clustering architecture layer 3 is attached in anode active material layer 1, described three-dimensional clustering architecture layer 3 is polymerized by least one group of taper carbon nano-tube, described silicon coating 4 is coated on three-dimensional clustering architecture layer 3, described silicon coating 3 thickness is 6 microns, the three-dimensional clustering architecture layer that taper carbon nano-tube on silicon coating is polymerized is compared with conventional graphite-based positive electrode, the lithium ion battery constructed shows the electrical and remarkable cyclical stability of very strong charge and discharge, its charging rate want fast on nearly 16 times, the total electricity of battery likely increases by 63% simultaneously, the weight of battery and size all can reduce about 40%, current collector layers surface is provided with friction groove, by the method for this chemistry or physics, surface etch is carried out to collector, form rough surface, thus improve the adhesive force of collector and active material, not only can alleviate the change in volume of lithium ion cell electrode in charge and discharge process, but also the high-rate charge-discharge capability of alloy electrode can be improved, compared with smooth copper sheet collector electrode, there is better cycle performance, the serviceability of lithium ion battery can be significantly improved.
Operation principle: during charging, lithium ion is deviate from from the lattice of positive electrode, is inserted in the lattice of negative material after electrolyte, makes the rich lithium of negative pole, positive extreme poverty lithium; During electric discharge, lithium ion is deviate from from the lattice of negative material, is inserted in the lattice of positive electrode after electrolyte, makes just to be rich in lithium, the poor lithium of negative pole.Such positive and negative pole material relative to the difference of the current potential of lithium metal, is exactly the operating voltage of battery in insertion and when deviating from lithium ion.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (4)
1. the anode pole piece of a lithium ion battery, comprise anode active material layer (1), current collector layers (2), three-dimensional clustering architecture layer (3), silicon coating (4), thermal insulation layer (5), friction groove (6), it is characterized in that: described anode active material layer (1) is coated in current collector layers (2), described thermal insulation layer (5) is uniformly coated in anode active material layer (1), described friction groove (6) is evenly arranged in current collector layers (2), described three-dimensional clustering architecture layer (3) is attached in anode active material layer (1), described silicon coating (4) is coated on three-dimensional clustering architecture layer (3), described silicon coating (4) thickness is 4-9 micron.
2. the anode pole piece of a kind of lithium ion battery according to claim 1, is characterized in that: described three-dimensional clustering architecture layer (3) is polymerized by least one group of taper carbon nano-tube.
3. the anode pole piece of a kind of lithium ion battery according to claim 1, is characterized in that: be provided with heat insulation hollow granule in described thermal insulation layer (5).
4. the anode pole piece of a kind of lithium ion battery according to claim 1, is characterized in that: described anode active material layer (1) by mangaic acid lithium layer, ferrous phosphate lithium layer, iron manganese phosphate lithium layer, vanadium phosphate lithium layer, cobalt acid lithium layer, mangaic acid lithium layer and ferrous metasilicate lithium layer one or more form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520384698.1U CN204651392U (en) | 2015-06-08 | 2015-06-08 | A kind of anode pole piece of lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520384698.1U CN204651392U (en) | 2015-06-08 | 2015-06-08 | A kind of anode pole piece of lithium ion battery |
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| CN204651392U true CN204651392U (en) | 2015-09-16 |
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| CN201520384698.1U Expired - Fee Related CN204651392U (en) | 2015-06-08 | 2015-06-08 | A kind of anode pole piece of lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695835A (en) * | 2020-12-31 | 2022-07-01 | 北京卫蓝新能源科技有限公司 | High-safety structure electrode piece and lithium battery |
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2015
- 2015-06-08 CN CN201520384698.1U patent/CN204651392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695835A (en) * | 2020-12-31 | 2022-07-01 | 北京卫蓝新能源科技有限公司 | High-safety structure electrode piece and lithium battery |
| CN114695835B (en) * | 2020-12-31 | 2024-01-23 | 北京卫蓝新能源科技有限公司 | Electrode plate with high safety structure and lithium battery |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 453000 Industrial Agglomeration Area of Dazhaoying Town, Xinxiang County, Xinxiang City, Henan Province Patentee after: Xinxiang Zhongtian new energy Polytron Technologies Inc Address before: 453000 Industrial Agglomeration Area of Dazhaoying Town, Xinxiang County, Xinxiang City, Henan Province Patentee before: XINXIANG ZHONGTIAN LIGHT SOURCE MATERIALS CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190608 |