CN206040854U - Lithium ion battery mass flow body for positive pole, contain this album of fluidic battery and be used for a preparation collection fluidic device - Google Patents
Lithium ion battery mass flow body for positive pole, contain this album of fluidic battery and be used for a preparation collection fluidic device Download PDFInfo
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- CN206040854U CN206040854U CN201621044213.5U CN201621044213U CN206040854U CN 206040854 U CN206040854 U CN 206040854U CN 201621044213 U CN201621044213 U CN 201621044213U CN 206040854 U CN206040854 U CN 206040854U
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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
Abstract
The utility model relates to a lithium ion battery mass flow body for positive pole, contain this album of fluidic battery and be used for a preparation collection fluidic device relates to the lithium ion battery of high power, belongs to secondary cell technical field. A lithium ion battery is the mass flow body for the positive pole, includes the aluminium foil base member, the aluminium foil matrix surface is rough surface, has highly the dimpling body for 0.5~5 micron on it, on at least one deposit graphite alkene layer on the surface of aluminium foil base member. The utility model provides a mass flow body, first this graphite alkene layer has good cohesion with the aluminium foil base member, increases collection fluidic electric conductivity, improves electrode life, the mass flow body and electrode active material's adhesion bond is greatly improved on second graphite alkene layer, reduces the mass flow body and active material's interface contact resistance to improve lithium ion battery's high power discharge ability.
Description
Technical field
This utility model is related to a kind of lithium ion cell positive collector and the battery comprising the collector, prepares the collection
The device of fluid, is related to high-power lithium ion battery, belongs to secondary battery technology.
Background technology
Lithium ion battery is a kind of high performance secondary cell, with running voltage it is high, volume and energy density are big, use
The advantages of life-span length and little self discharge, it is widely deployed and leads in various digital products, mobile communication equipment and power tool etc.
Domain.With application of the lithium ion battery on electric automobile and electronic apparatus of transport, the high rate discharge ability to lithium ion battery,
That is the requirement more and more higher of high-power battery.The electric conductivity of electrode plates directly affects the output of battery.
Collector is structure or the part for collecting electric current in a kind of lithium ion battery, and major function is by cell active materials
The electric current of generation collects, there is provided electron channel, accelerates electric charge transfer, improves discharge and recharge coulombic efficiency.Need as collector
Meet electrical conductivity height, good mechanical property, light weight, internal resistance and it is little with active substance face contact resistance the features such as.
The anode pole piece of lithium ion battery is made up of with the active anode compartment material for being coated in its surface collector.Active matter
Matter adds carbons conductive agent and binding agent makes slurry, is coated in the surface of collector.As electrokinetic cell, conventional positive pole collection
Fluid adopts aluminium foil, conventional positive active material to adopt safe and stable LiFePO 4 or ternary material.But phosphoric acid is sub-
, used as positive material of high-power lithium ion battery, conductive capability is not enough, and larger amount of carbons need to be added to lead for ferrum lithium and ternary material
Electric agent, and active substance is also inadequate with the adhesion of collector, and the high rate discharge ability of battery and life-span need further
Improve.
Graphene is a kind of simple substance of carbon, is all the allotrope of carbon with diamond, graphite etc..Graphene has perfection
Two-dimensional structure, which has good electronic conductivity, while it or a kind of Ultra-Light Material.Graphene is coated on into collection
Fluid matrix surface, is beneficial to reduce contact resistance, raising collector and the active material layer of active material layer and collector
Adhesion, improve collector electric current collection ability and electrode conductive capability, so as to the high speed for improving lithium ion battery is put
Electric energy power.
The application for a patent for invention of 104319364 A of Publication No. CN discloses a kind of positive pole for reducing battery DC internal resistance
Piece and preparation method thereof, the positive plate are applied with the single Graphene being disposed alternately on any one or both sides of aluminium foil by aluminium foil
Layer, constitute containing carbon nano-fiber slurry coating, above-mentioned single graphite ene coatings coat by single Graphene slurry and formed, on
State containing carbon nano-fiber slurry coating by being formed containing carbon nano-fiber slurry.Should be by living containing carbon nano-fiber slurry
Property material, binding agent, solvent, carbon nano-fiber formed slurry.The graphene layer of the invention is to coat to be formed by slurry.
The patent of invention of 102208598 A of Publication No. CN discloses a kind of coating modified lithium secondary battery of Graphene
Electrode plates, including collector foil, have graphene layer in the coated on both sides of the collector foil, in the graphene layer
On be coated with electrode active material layers.The coating modified lithium secondary battery pole piece of the Graphene of the invention, the electrode plates bag
Include collector foil and collector foil coated on both sides graphene layer and the electrode active being coated on graphene layer
Property material layer, the modified lithium secondary battery pole piece of thus obtained Graphene, as Graphene has preferable electric conductivity and heat conduction
Performance, this improves the electric conductivity and battery combination property of electrode plates.The graphene layer of the invention is applied by slurry
Cover to be formed.
Notification number is that the patent of invention of 103545530 B discloses a kind of collector being applied in battery, and which includes one
Graphene film and a supporting construction, the graphene film are arranged at the surface of the supporting construction, and the graphene film includes at least one
Layer graphene.The invention further provides for a kind of lithium ion battery of the application collector.The feature of the invention is afflux body surface
Face at least one of which Graphene and the active material layer containing carbon fiber.Graphene film is coated for slurry and to be formed or hot pressing is formed.
The content of the invention
For solving the deficiency of above technical scheme, it is modified that this utility model provides a kind of lithium ion cell positive Graphene
Collector and the lithium ion battery using the collector, for improving the adhesion of collector and electrode active material layer and subtracting
Little contact resistance, improves the conductive capability of based lithium-ion battery positive plate, so as to improve the high power discharge ability of lithium ion battery.
A kind of lithium ion cell positive collector, including aluminium foil matrix, the aluminium foil matrix surface is coarse table
Face, thereon with the micro-bulge that height is 0.5～5 micron, the deposited graphite alkene layer at least one surface of aluminium foil matrix.
For improving the adhesion and collector electric conductivity of active material layer and plus plate current-collecting body, this utility model adopts microwave
The method of plasma gas-phase deposit prepares Graphene modified layer on aluminium foil matrix, makes the modified lithium ion battery of Graphene
Plus plate current-collecting body and the lithium ion battery with the collector, using the high conductivity and the little characteristic of contact resistance of Graphene,
Realize the high power discharge of lithium ion battery.
In above-mentioned technical proposal, the aluminium foil matrix surface be rough surface, thereon with height be 0.5～5 micron
Micro-bulge, the deposited graphite alkene layer on aluminium foil matrix surface single or double.
In above-mentioned technical proposal, pass through microwave plasma chemical gas phase preferably at least one surface of aluminium foil matrix
Deposition graphene layer, further, it is preferable to the aluminium foil matrix surface single or double passes through microwave plasma
Chemical vapor deposition graphene layer.
Further, the microwave plasma chemical CVD method is：
Methods described is carried out in microwave plasma chemical vapor phase growing apparatus：
1) aluminium foil matrix is placed in into Dewar vessel resonant cavity, aluminium foil matrix connects negative electrode, and Dewar vessel is anode；
2) empty the air in Dewar vessel；Meanwhile, aluminium foil matrix is heated to into 280～600 DEG C；
3) under reaction temperature and 0.1～5Pa ar pressures, apply DC pulse voltage on aluminium foil matrix, formed
Plasma, processes aluminium foil matrix 10～30 minutes, activates aluminium foil matrix surface, wherein, applies on aluminium foil matrix
DC pulse voltage value is 400～600V；
4), after the activated process of aluminium foil matrix, 2.4GHz microwaves and hydrocarbon gas and argon in Dewar vessel resonant cavity, are imported
The mixed gas of gas, keeping temperature are 280～600 DEG C, and atmosphere pressures are deposition processes 10 minutes～60 under 0.5Pa～10Pa
Minute, stop importing microwave and hydrocarbon gas, the air pressure in Dewar vessel is down to into below 0.1Pa, room temperature is cooled to the furnace, is obtained
There is the lithium ion cell positive collector of graphene layer to aluminium foil surface deposition,
Wherein, the hydrocarbon gas are methanol or the one kind in alcohol gas.
In above-mentioned technical proposal, " air in emptying Dewar vessel " is carried out as follows：Dewar vessel is taken out
Vacuum is filled with argon to 50～70Pa, 3 times repeatedly, is then evacuated to below 0.1Pa to below 0.1Pa.
Further, it is preferable to by evacuating atmosphere in vacuum vessel to 0.05～0.1Pa, argon is filled with to 50～70Pa, repeatedly 3
It is secondary, then it is evacuated to 0.1～5Pa.
Lithium ion cell positive described in the utility model with all technical schemes of collector, preferably described hydrocarbon gas with
Hydrocarbon gas in the mixed gas of argon：The volume ratio of argon is 1:0.2～1:2.
Lithium ion cell positive described in the utility model with all technical schemes of collector, preferably described aluminium foil matrix
Thickness be 8 microns～40 microns, the thickness of described graphene layer is 0.1 micron～20 microns.
Of the present utility model and purpose is to provide a kind of lithium ion battery comprising above-mentioned collector.
A kind of lithium ion battery, the battery include electrode group and nonaqueous electrolytic solution, the electrode group and nonaqueous electrolytic solution
It is sealed in battery packages；The electrode group includes positive pole, negative pole and barrier film；The positive pole includes plus plate current-collecting body and coating
And/or the positive electrode active materials being filled on plus plate current-collecting body；The negative pole includes negative current collector and coating and/or is filled in
Negative active core-shell material on negative current collector；Described barrier film is high-molecular porous film or composite membrane,
The plus plate current-collecting body includes aluminium foil matrix, and the aluminium foil matrix surface is rough surface, thereon with height
The micro-bulge for 0.5～5 micron is spent, the deposited graphite alkene layer at least one surface of aluminium foil matrix.
Further, it is preferable to the negative current collector is Copper Foil material.
A further object of the present utility model is to provide a kind of device for preparing above-mentioned lithium ion cell positive collector.
A kind of microwave plasma chemical vapor phase growing apparatus for preparing the lithium ion cell positive collector, the dress
Put including Dewar vessel, be Dewar vessel resonant cavity in the Dewar vessel, Dewar vessel resonance intracavity is provided with for carrying aluminum
The substrate support of foil matrix；Described device also includes DC source, and wherein, aluminium foil matrix connects the negative electrode of DC source,
Dewar vessel connects the anode of DC source；The Dewar vessel is provided with the air inlet for air inlet, taking out very for evacuation
Eat dishes without rice or wine and microwave tube, described microwave tube one end connects Dewar vessel, other end connection microwave generator.
Further, described device includes coupling actuator, and the coupling actuator is used for making microwave and plasmon coupling.
The beneficial effects of the utility model are：Graphene is the material with carbon element of the two-dimensional structure of a class SP2 hydridization, with fabulous
Electron conduction, using microwave plasma chemical vapour deposition, it is possible to achieve the preparation of low temperature graphene film, can be applied to
It is modified in the aluminum foil current collector of lithium ion cell positive, first graphene layer has good combination with aluminium foil matrix
Power, increases the electric conductivity of collector, improves electrode life；Second graphene layer is greatly enhanced collector and electrode active material
Bonding force, reduce the interface contact resistance of collector and active substance, so as to improve the high power discharge energy of lithium ion battery
Power.
Description of the drawings
Structure charts of the Fig. 1 for microwave plasma (CVD) device, reference are as follows：101st, microwave generator,
102nd, microwave tube, 103, air inlet, 104, plasma, 105, aluminium foil matrix, 106, substrate support, 107, vacuum orifice,
108th, DC source, 109, coupling actuator, 110, Dewar vessel resonant cavity, 111, Dewar vessel.
Fig. 2 is the schematic diagram of the positive plate of the collector using deposited graphite alkene layer, and reference is as follows：1st, collector base
Body aluminium foil, 2, graphene layer, 3, positive electrode active material layer.
Specific embodiment
Following non-limiting examples can make one of ordinary skill in the art that this utility model is more fully understood, but
This utility model is limited never in any form.
Test method described in following embodiments, if no special instructions, is conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
Methods described is carried out in microwave plasma chemical vapor phase growing apparatus, microwave plasma used in following embodiments
Chemical vapor deposition unit, structure is as shown in figure 1, described device includes holding for vacuum in Dewar vessel 111, the Dewar vessel
Device resonant cavity 110, is provided with the substrate support 106 for carrying aluminium foil matrix 105 in Dewar vessel resonant cavity 110；The dress
Put, wherein, aluminium foil matrix 105 connects the negative electrode of DC source 108, and Dewar vessel 111 connects directly
The anode of stream power supply 108；The Dewar vessel 111 is provided with the air inlet 103 for air inlet, for the vacuum orifice of evacuation
107 and microwave tube 102,102 one end of microwave tube connection Dewar vessel 111, other end connection microwave generator 101.It is described
Device includes coupling actuator 109, and the coupling actuator 109 is used for making microwave couple with plasma 104.
In microwave plasma chemical vapor deposition processes are carried out, adjust coupling actuator 109 and cause microwave and plasma
Body 104 is coupled, and is formed microwave plasma and is deposited.
A kind of preparation method of lithium ion cell positive collector, is microwave plasma chemical CVD method, its
Process is：
1) aluminium foil matrix is placed in into Dewar vessel resonant cavity 110, the connection negative electrode of aluminium foil matrix 105, Dewar vessel 111
For anode；
2) by evacuating atmosphere in vacuum vessel to 0.05～0.1Pa, argon is filled with to 50～70Pa, 3 times repeatedly, then evacuation
To 0.1～5Pa；Meanwhile, aluminium foil matrix is heated to into 280～600 DEG C；
3) under reaction temperature and 0.1～5Pa ar pressures, DC pulse voltage, shape are applied on aluminium foil matrix 105
Into plasma 104, aluminium foil matrix is processed 10～30 minutes, 105 surface of activation aluminium foil matrix, wherein, aluminium foil matrix
The DC pulse voltage value applied on 105 is 400～600V；
4), after the 105 activated process of aluminium foil matrix, 2.4GHz microwaves and carburetted hydrogen gas in Dewar vessel resonant cavity 110, are imported
Mixed gas (the hydrocarbon gas of body and argon：The volume ratio of argon is 1:0.2～1:2), keeping temperature is 280～600 DEG C, gas
Atmosphere pressure is deposition processes 10 minutes～60 minutes under 0.5Pa～10Pa, stops importing microwave and hydrocarbon gas, vacuum is held
Air pressure in device 111 is down to below 0.1Pa, cools to room temperature with the furnace, obtain aluminium foil surface deposition have the lithium of graphene layer from
Sub- anode collector,
Wherein, the hydrocarbon gas are methanol or the one kind in alcohol gas.
Embodiment 1
It is prepared by the modified plus plate current-collecting body of Graphene：
(1) 15 microns thick of cleaning oil removing of aluminium foil matrix is positioned over the vacuum resonant cavity of microwave plasma apparatus,
Connection negative electrode, Dewar vessel is anode；
(2) evacuating atmosphere in vacuum vessel is filled with argon to 50Pa to 0.1Pa, is evacuated to 0.1Pa, 3 times repeatedly；Meanwhile, aluminum
Foil matrix is heated to 350 DEG C of temperature；
(3) under 1.0Pa ar pressures, apply DC pulse voltage 600V in aluminium foil, lived with the plasma for being formed
Change aluminium foil matrix surface 20 minutes；
(4) 2.4GHz microwaves and hydrocarbon gas (ethanol is imported in Dewar vessel resonant cavity：Argon=1:0.5 gaseous mixture
Body), 380 DEG C of resonant cavity reaction temperature is kept, under the air pressure of 2Pa, deposition processes 50 minutes stop importing microwave and carburetted hydrogen gas
Air pressure in Dewar vessel is down to below 0.1Pa, cools to room temperature with the furnace by body, and obtaining aluminium foil deposition has graphene layer
Lithium ion cell positive collector.Graphene layer thickness is 3.0 microns.
It is prepared by the positive pole for being had the aluminum foil current collector of Graphene using deposition：By nickel-cobalt-manganternary ternary anode material, acetylene black, gather
Vinylidene is added in N-Methyl pyrrolidone solvent with 85: 7: 8 mass ratio, mix homogeneously；Coat the collector of preparation
On, after 30min being dried at 60 DEG C, be placed in 120 DEG C of drying in vacuum drying oven, obtain final product anode pole piece；
It is prepared by negative pole：By carbon coating silica flour that particle diameter is 100～120 nanometers, acetylene black, Kynoar with 80: 10: 10
Mass ratio add N-Methyl pyrrolidone solvent in, mix homogeneously；Coat on the Copper Foil that thickness is 20 microns, at 60 DEG C
After drying 30min, 120 DEG C of drying in vacuum drying oven are placed in, cathode pole piece is obtained final product；
After positive pole after drying, PE/PP composite diaphragms, negative pole are stacked successively, electrolyte is added, electrolyte is
LiPF6/EC: DEC=1: 1 (Vol), seals in battery packages and obtains lithium ion battery.
, using the identical step of embodiment 1 and material, except for the difference that plus plate current-collecting body is using conventional aluminium foil for control cell
Collector.
Jing is tested, and the internal resistance of cell of embodiment 1 is 1.80 milliohms, and the internal resistance of cell of control cell example is 4.85 milliohms, real
The internal resistance of cell for applying example is remarkably decreased.
Embodiment 2
It is prepared by the modified plus plate current-collecting body of Graphene：
(1) 20 microns thick of cleaning oil removing of aluminium foil matrix is positioned over the vacuum resonant cavity of microwave plasma apparatus,
Connection negative electrode, Dewar vessel is anode；
(2) evacuating atmosphere in vacuum vessel is filled with argon to 50Pa to 0.1Pa, is evacuated to 0.1Pa, 3 times repeatedly；Meanwhile, aluminum
Foil matrix is heated to 550 DEG C of temperature；
(3) under 5.0Pa ar pressures, apply DC pulse voltage 500V in aluminium foil, lived with the plasma for being formed
Change aluminium foil matrix surface 20 minutes；
(4) 2.4GHz microwaves and hydrocarbon gas (ethanol is imported in Dewar vessel resonant cavity：Argon=1:1 gaseous mixture
Body), 500 DEG C of resonant cavity reaction temperature is kept, under the air pressure of 5Pa, deposition processes 30 minutes stop importing microwave and carburetted hydrogen gas
Air pressure in Dewar vessel is down to below 0.1Pa, cools to room temperature with the furnace by body, and obtaining aluminium foil deposition has Graphene to be modified
The lithium ion cell positive collector of layer.Graphene layer thickness is 7.3 microns.
It is prepared by the positive pole for being had the aluminum foil current collector of Graphene using deposition：By nickel-cobalt-manganternary ternary anode material, acetylene black, gather
Vinylidene is added in N-Methyl pyrrolidone solvent with 85: 7: 8 mass ratio, mix homogeneously；Coat the collector of preparation
On, after 30min being dried at 60 DEG C, be placed in 120 DEG C of drying in vacuum drying oven, obtain final product anode pole piece；
It is prepared by negative pole：By carbon coating silica flour that particle diameter is 100～120 nanometers, acetylene black, Kynoar with 80: 10: 10
Mass ratio add N-Methyl pyrrolidone solvent in, mix homogeneously；Coat on the Copper Foil that thickness is 20 microns, at 60 DEG C
After drying 30min, 120 DEG C of drying in vacuum drying oven are placed in, cathode pole piece is obtained final product；
After positive pole after drying, PE/PP composite diaphragms, negative pole are stacked successively, electrolyte is added, electrolyte is
LiPF6/EC: DEC=1: 1 (Vol), seals in battery packages and obtains lithium ion battery.
Jing is tested, and the internal resistance of cell of embodiment 2 is 1.65 milliohms, and the internal resistance of cell of control cell example is 4.85 milliohms, real
The internal resistance of cell for applying example is remarkably decreased.
Embodiment 3
It is prepared by the modified plus plate current-collecting body of Graphene：
(1) 20 microns thick of cleaning oil removing of aluminium foil matrix is positioned over the vacuum resonant cavity of microwave plasma apparatus,
Connection negative electrode, Dewar vessel is anode；
(2) evacuating atmosphere in vacuum vessel is filled with argon to 50Pa to 0.1Pa, is evacuated to 0.1Pa, 3 times repeatedly；Meanwhile, aluminum
Foil matrix is heated to 450 DEG C of temperature；
(3) under 10Pa ar pressures, apply DC pulse voltage 550V in aluminium foil, it is plasma-activated with what is formed
Aluminium foil matrix surface 15 minutes；
(4) 2.4GHz microwaves and hydrocarbon gas (ethanol is imported in Dewar vessel resonant cavity：Argon=1:2 gaseous mixture
Body), 450 DEG C of resonant cavity reaction temperature is kept, under the air pressure of 8Pa, deposition processes 25 minutes stop importing microwave and carburetted hydrogen gas
Air pressure in Dewar vessel is down to below 0.1Pa, cools to room temperature with the furnace by body, and obtaining aluminium foil deposition has Graphene to be modified
The lithium ion cell positive collector of layer.Graphene layer thickness is 12 microns.
It is prepared by the positive pole for being had the aluminum foil current collector of Graphene using deposition：By lithium iron phosphate cathode material, acetylene black, gather
Vinylidene is added in N-Methyl pyrrolidone solvent with 87: 8: 5 mass ratio, mix homogeneously；Coat the collector of preparation
On, after 30min being dried at 60 DEG C, be placed in 120 DEG C of drying in vacuum drying oven, obtain final product anode pole piece；
It is prepared by negative pole：By carbon coating silica flour that particle diameter is 100～120 nanometers, acetylene black, Kynoar with 80: 10: 10
Mass ratio add N-Methyl pyrrolidone solvent in, mix homogeneously；Coat on the Copper Foil that thickness is 20 microns, at 60 DEG C
After drying 30min, 120 DEG C of drying in vacuum drying oven are placed in, cathode pole piece is obtained final product；
After positive pole after drying, PE/PP composite diaphragms, negative pole are stacked successively, electrolyte is added, electrolyte is
LiPF6/EC: DEC=1: 1 (Vol), seals in battery packages and obtains lithium ion battery.
Positive pole example as a comparison is prepared using conventional aluminum foil current collector, preparation process is same as Example 3.
Jing is tested, and the internal resistance of cell of embodiment 3 is 3.73 milliohms, and the internal resistance of cell of control cell example is 7.34 milliohms, real
The internal resistance of cell for applying example is remarkably decreased.
Embodiment 4
It is prepared by the modified plus plate current-collecting body of Graphene：
(1) 30 microns thick of cleaning oil removing of aluminium foil matrix is positioned over the vacuum resonant cavity of microwave plasma apparatus,
Connection negative electrode, Dewar vessel is anode；
(2) evacuating atmosphere in vacuum vessel is filled with argon to 50Pa to 0.1Pa, is evacuated to 0.1Pa, 3 times repeatedly；Meanwhile, aluminum
Foil matrix is heated to 580 DEG C of temperature；
(3) under 3Pa ar pressures, apply DC pulse voltage 480V in aluminium foil, it is plasma-activated with what is formed
Aluminium foil matrix surface 12 minutes；
(4) 2.4GHz microwaves and hydrocarbon gas (ethanol is imported in Dewar vessel resonant cavity：Argon=1:2 gaseous mixture
Body), 580 DEG C of resonant cavity reaction temperature is kept, under the air pressure of 10Pa, deposition processes 40 minutes stop importing microwave and hydrocarbon
Air pressure in Dewar vessel is down to below 0.1Pa, cools to room temperature with the furnace by gas, and obtaining aluminium foil deposition has Graphene to change
The lithium ion cell positive collector of property layer.Graphene layer thickness is 18 microns.
It is prepared by the positive pole for being had the aluminum foil current collector of Graphene using deposition：By nickel cobalt aluminum tertiary cathode material, acetylene black, gather
Vinylidene is added in N-Methyl pyrrolidone solvent with 88: 6: 6 mass ratio, mix homogeneously；Coat the collector of preparation
On, after 30min being dried at 60 DEG C, be placed in 120 DEG C of drying in vacuum drying oven, obtain final product anode pole piece；
It is prepared by negative pole：By carbon coating silica flour that particle diameter is 100～120 nanometers, acetylene black, Kynoar with 80: 10: 10
Mass ratio add N-Methyl pyrrolidone solvent in, mix homogeneously；Coat on the Copper Foil that thickness is 20 microns, at 60 DEG C
After drying 30min, 120 DEG C of drying in vacuum drying oven are placed in, cathode pole piece is obtained final product；
After positive pole after drying, PE/PP composite diaphragms, negative pole are stacked successively, electrolyte is added, electrolyte is
LiPF6/EC: DEC=1: 1 (Vol), seals in battery packages and obtains lithium ion battery.
Jing is tested, and the internal resistance of cell of embodiment 4 is 1.58 milliohms, and the internal resistance of cell of control cell example is 4.85 milliohms, real
The internal resistance of cell for applying example is remarkably decreased.
Claims (7)
1. a kind of lithium ion cell positive collector, it is characterised in that：Including aluminium foil matrix, the aluminium foil matrix surface
For rough surface, thereon with the micro-bulge that height is 0.5～5 micron, deposit at least one surface of aluminium foil matrix
Graphene layer.
2. collector according to claim 1, it is characterised in that：By micro- at least one surface of aluminium foil matrix
Ripple plasma chemical vapor deposition process deposited graphite alkene layer.
3. collector according to claim 1, it is characterised in that：The thickness of the aluminium foil matrix is 8 microns～40 micro-
Rice, the thickness of described graphene layer is 0.1 micron～20 microns.
4. a kind of lithium ion battery, it is characterised in that：Plus plate current-collecting body used is collector described in claim 1.
5. battery according to claim 4, it is characterised in that：The battery includes electrode group and nonaqueous electrolytic solution, described
Electrode group and nonaqueous electrolytic solution are sealed in battery packages；The electrode group includes positive pole, negative pole and barrier film；The positive pole includes
Plus plate current-collecting body and coating and/or the positive electrode active materials being filled on plus plate current-collecting body；The negative pole includes negative current collector
And coating and/or the negative active core-shell material being filled on negative current collector；Described barrier film is high-molecular porous film or composite membrane.
6. a kind of microwave plasma chemical vapour deposition for preparing lithium ion cell positive collector described in claim 1 is filled
Put, it is characterised in that：
It is Dewar vessel resonant cavity (110) that described device is included in Dewar vessel (111), the Dewar vessel, and Dewar vessel is common
Shake the interior substrate support (106) being provided with for carrying aluminium foil matrix (105) in chamber (110)；Described device also includes DC source
(108), wherein, the negative electrode of aluminium foil matrix (105) connection DC source (108), Dewar vessel (111) connection DC source
(108) anode；Dewar vessel (111) be provided with the air inlet (103) for air inlet, for the vacuum orifice of evacuation
(107) and microwave tube (102), microwave tube (102) one end connection Dewar vessel (111), other end connection microwave generator
(101)。
7. device according to claim 6, it is characterised in that：Described device includes coupling actuator (109), and the coupling is adjusted
Section device (109) is used for making microwave couple with plasma (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044213.5U CN206040854U (en) | 2016-09-08 | 2016-09-08 | Lithium ion battery mass flow body for positive pole, contain this album of fluidic battery and be used for a preparation collection fluidic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044213.5U CN206040854U (en) | 2016-09-08 | 2016-09-08 | Lithium ion battery mass flow body for positive pole, contain this album of fluidic battery and be used for a preparation collection fluidic device |
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|---|---|
| CN206040854U true CN206040854U (en) | 2017-03-22 |
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2016
- 2016-09-08 CN CN201621044213.5U patent/CN206040854U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11855278B2 (en) | 2020-06-25 | 2023-12-26 | 6K, Inc. | Microcomposite alloy structure |
| US11963287B2 (en) | 2020-09-24 | 2024-04-16 | 6K Inc. | Systems, devices, and methods for starting plasma |
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