CN207504101U - A kind of graphene rectangular lithium ion battery - Google Patents
A kind of graphene rectangular lithium ion battery Download PDFInfo
- Publication number
- CN207504101U CN207504101U CN201721385336.XU CN201721385336U CN207504101U CN 207504101 U CN207504101 U CN 207504101U CN 201721385336 U CN201721385336 U CN 201721385336U CN 207504101 U CN207504101 U CN 207504101U
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- Prior art keywords
- negative
- diaphragm
- graphene
- lithium 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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- 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
Abstract
The utility model discloses a kind of graphene rectangular lithium ion batteries, it is wound and is formed by multiple battery structure units, battery structure unit includes positive plate, diaphragm, negative plate composition, the graphene layer for the step structure being made of multiple single-layer graphenes is additionally provided between the negative current collector and anode active material layer of negative plate, diaphragm is in groove and the concave-convex type structure of bulge clearance setting；The lithium ion battery of the utility model, with higher specific capacity, electric charge carrier migration rate and cycle performance, diaphragm setting concave-convex type structure can be met into volume change of the cell active materials in charge and discharge process, the direction of concaveconvex structure is arranged to be more advantageous to the path direction of electrolyte circulation, it is more advantageous to promoting the convection current of electrolyte and the release of its heat, so that diaphragm temperature is more uniform, the deposition of lithium metal and the deterioration of electrolyte solution can also be inhibited.
Description
Technical field
The utility model is related to battery technology field, more particularly to a kind of graphene rectangular lithium ion battery.
Background technology
Research shows that the intercalation potential of silicon is low in the negative material of lithium ion battery, specific capacity highest (4200mAh.g-1), much larger than the theoretical capacity of graphite；Silicon is safer reliable as cathode compared with graphite simultaneously, so being obtained in the range of in the industry cycle
Extensive research.Although the capacity of silicon will be higher by as many as ten times of carbon, since huge bulk effect causes silicon based anode material to exist
Capacity rapid decay in de-/process of intercalation, electrode cycle performance decline rapidly, greatly hinder its commercialized process.
Graphene has higher charge carrier mobility, super good thermal stability and electrical conductivity, superelevation at room temperature
Young's modulus, the theoretical specific surface area of super large.Since graphene has unique performance, in energy storage and conversion art stone
Black alkene material has larger use potentiality.But how graphene is applied in lithium battery, it is that the technology solved is needed to ask
Topic.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, providing a kind of graphene rectangular lithium ion battery,
What the technical solution of the graphene rectangular lithium ion battery was realized in：
A kind of graphene rectangular lithium ion battery, it is characterised in that：The battery is wound by multiple battery structure units
Formed, the battery structure unit include positive plate, diaphragm, negative plate composition, the positive plate include plus plate current-collecting body and
Anode active material layer, the material of the anode active material layer are lithium metal or lithium alloy metals material, the negative plate packet
Negative current collector and anode active material layer are included, the material of the anode active material layer is silicon substrate composite negative pole material, described
Graphene layer is additionally provided between negative current collector and anode active material layer, the graphene layer is by multiple single-layer graphenes
The step structure of composition, the step structure use what is gradually successively decreased from negative current collector to anode active material layer direction
Mode, the battery structure unit further include the electrolyte being dispersed between positive plate and diaphragm, diaphragm and negative plate, it is described every
Film is in groove and the concave-convex type structure of bulge clearance setting.
Further, the direction of the groove of the diaphragm and protrusion is that the coiling direction of the battery is vertically disposed.
Further, the plus plate current-collecting body is aluminium foil, and the negative current collector is copper foil.
Further, the battery further includes the positive terminal and negative terminal stretched out other than battery structure unit.
Further, the plus plate current-collecting body of the positive terminal and the positive plate is mutually electrically connected, and the negative terminal is
It is mutually electrically connected with the negative current collector of the negative plate.
The lithium ion battery of the utility model by the use of silicon based composite material as negative material, is set in silica-base material side
There is the graphene layer of the stepped structure with large specific surface area, not only provide the space of silica-base material volume change, also
So that battery has higher specific capacity, electric charge carrier migration rate and cycle performance, it can by diaphragm setting concave-convex type structure
To meet volume change of the cell active materials in charge and discharge process, the direction of concaveconvex structure is arranged to be more advantageous to being electrolysed
The path direction that liquid stream is led to is more advantageous to promoting the convection current of electrolyte and the release of its heat so that and diaphragm temperature is more uniform,
It can also inhibit the deposition of lithium metal and the deterioration of electrolyte solution.
Description of the drawings
Fig. 1 is the structure diagram of the utility model lithium ion battery；
Fig. 2 is the layered structure schematic diagram of the utility model battery structure unit；
Fig. 3 is the structure diagram of the utility model diaphragm；
Fig. 4 is the structure diagram of the utility model negative plate.
Reference numeral：100- battery structure units, 101- positive plates, 102- positive terminals, 103- diaphragms, 103a- are convex
It rises, 103b- grooves, 104- negative terminals, 105- negative plates, 105a- negative current collectors, 105b- graphene layers, 105c- cathode
Active material layer, 106- electrolyte (not shown).
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in figures 1-4, a kind of graphene rectangular lithium ion battery is wound by multiple battery structure units 100 and is formed
, the battery structure unit includes positive plate 101, diaphragm 103, negative plate 105 and forms, and the positive plate 101 includes anode
Collector and anode active material layer, the material of the anode active material layer are lithium metal or lithium alloy metals material, described
Negative plate 105 includes negative current collector 105a and anode active material layer 105c, and the material of the anode active material layer is silicon
Base composite negative pole material is additionally provided with graphene layer between the negative pole currect collecting 105a bodies and anode active material layer 105c
105b, the graphene layer 105b are the step structures being made of multiple single-layer graphenes, the step structure use by
The mode that negative current collector 105a gradually successively decreases to anode active material layer 105c directions, the battery structure unit 100 also wrap
The electrolyte 106 being dispersed between positive plate 101 and diaphragm 103, diaphragm 103 and negative plate 105 is included, the diaphragm 103 is in recessed
Slot and the concave-convex type structure of bulge clearance setting.
When it is implemented, the coiling direction that the direction of the groove of the diaphragm 103 and protrusion is the battery is vertically arranged
's.
When it is implemented, the plus plate current-collecting body is aluminium foil, the negative current collector 105a is copper foil.
When it is implemented, the battery further includes the positive terminal and 102 cathode stretched out other than battery structure unit 100
Terminal 104.
When it is implemented, what the plus plate current-collecting body of the positive terminal 102 and the positive plate 101 was mutually electrically connected, it is described negative
Extreme son 104 is electrically connected with the negative current collector 105a phases of the negative plate 105.
The technology contents and technical characteristic of the utility model have revealed that as above those skilled in the art still may base
The replacement and modification without departing substantially from the utility model in essence are made in the teaching of the utility model, therefore, the utility model protection
Range is not limited to the revealed content of embodiment, also including various replacements and modification without departing substantially from the utility model in essence.
Claims (5)
1. a kind of graphene rectangular lithium ion battery, it is characterised in that：The battery is to wind shape by multiple battery structure units
Into, the battery structure unit includes positive plate, diaphragm, negative plate composition, and the positive plate is including plus plate current-collecting body and just
Pole active material layer, the material of the anode active material layer is lithium metal or lithium alloy metals material, and the negative plate includes
Negative current collector and anode active material layer, the material of the anode active material layer is silicon substrate composite negative pole material, described negative
Graphene layer is additionally provided between pole collector and anode active material layer, the graphene layer is by multiple single-layer graphene structures
Into step structure, the step structure uses side from negative current collector to anode active material layer direction that gradually successively decrease from
Formula, the battery structure unit further include the electrolyte being dispersed between positive plate and diaphragm, diaphragm and negative plate, the diaphragm
In groove and the concave-convex type structure of bulge clearance setting.
2. graphene rectangular lithium ion battery according to claim 1, it is characterised in that：The groove of the diaphragm and protrusion
Direction be the battery coiling direction it is vertically disposed.
3. graphene rectangular lithium ion battery according to claim 1, it is characterised in that：The plus plate current-collecting body is aluminium
Foil, the negative current collector are copper foil.
4. graphene rectangular lithium ion battery according to claim 1, it is characterised in that：The battery further includes stretching electricity
Positive terminal and negative terminal other than pool structure unit.
5. graphene rectangular lithium ion battery according to claim 4, it is characterised in that：The positive terminal with it is described just
What the plus plate current-collecting body of pole piece was mutually electrically connected, the negative terminal is mutually electrically connected with the negative current collector of the negative plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721385336.XU CN207504101U (en) | 2017-10-25 | 2017-10-25 | A kind of graphene rectangular lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721385336.XU CN207504101U (en) | 2017-10-25 | 2017-10-25 | A kind of graphene rectangular lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504101U true CN207504101U (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721385336.XU Expired - Fee Related CN207504101U (en) | 2017-10-25 | 2017-10-25 | A kind of graphene rectangular lithium ion battery |
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| Country | Link |
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| CN (1) | CN207504101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675364A (en) * | 2021-08-30 | 2021-11-19 | 蜂巢能源科技有限公司 | Negative plate and preparation method and application thereof |
| CN114188507A (en) * | 2021-10-29 | 2022-03-15 | 中国石油大学(北京) | Negative pole piece, preparation method thereof and lithium ion battery |
-
2017
- 2017-10-25 CN CN201721385336.XU patent/CN207504101U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675364A (en) * | 2021-08-30 | 2021-11-19 | 蜂巢能源科技有限公司 | Negative plate and preparation method and application thereof |
| WO2023029555A1 (en) * | 2021-08-30 | 2023-03-09 | 蜂巢能源科技股份有限公司 | Negative electrode sheet, preparation method therefor, and application thereof |
| CN114188507A (en) * | 2021-10-29 | 2022-03-15 | 中国石油大学(北京) | Negative pole piece, preparation method thereof and lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180615 Termination date: 20181025 |