CN206541886U - A kind of lithium ion battery electrode plates - Google Patents
A kind of lithium ion battery electrode plates Download PDFInfo
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- CN206541886U CN206541886U CN201621175772.XU CN201621175772U CN206541886U CN 206541886 U CN206541886 U CN 206541886U CN 201621175772 U CN201621175772 U CN 201621175772U CN 206541886 U CN206541886 U CN 206541886U
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- carbon
- electrode plates
- lithium ion
- ion battery
- collector
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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 is related to a kind of lithium ion battery electrode plates, belongs to field of lithium ion battery.The lithium ion battery is made up of with electrode plates pole piece body and lug, and the pole piece body party is collector skeleton, and the collector skeleton has three-dimensional net structure, and the grid that the three-dimensional net structure is constituted is irregular shape grid；The collector skeleton surface mesh is covered with carbon-coating；It is filled up completely with inside the grid by filler, the filler is that titanium dioxide/niobium-titanium oxide particle is scattered in the mixture formed in Polymer-pyrolysis carbon.Lithium ion battery provided by the utility model is not introduced into the conductive agent and binding agent commonly used in conventional lithium ion battery pole piece with electrode plates, but the cementation for coating the Polymer-pyrolysis carbon between the three-dimensional network skeleton structure collector of carbon-coating by active composite electrode material and endoporus is configured with the pole piece of good dispersion and high adhesiveness, and there is low cost, easy-formation.
Description
Technical field
The utility model is related to a kind of lithium ion battery electrode plates, and in particular to one kind can be used as lithium ion battery and bear
Pole has the discharge and recharge invertibity high, the good titanium dioxide/niobium-titanium oxide composite electrode pole piece of cycle performance, belong to lithium from
Sub- field of batteries.
Background technology
Miniaturization with various portable electric appts and the widespread demand to electric automobile, to the demand of electrochmical power source
With performance requirement sharp increase, and conventional lithium ion battery using carbons material as its negative material, due to by lithium ion
The limitation of diffusion velocity in its lattice, carbons negative material easily causes Li dendrite and existed in overcharge and large current charge
The deposition on its surface, and Li dendrite easily punctures the diaphragm material of isolation positive and negative electrode, so as to trigger battery micro-short circuit or part
The potential safety hazards such as overheat.This is also one of bottleneck problem that lithium ion battery is applied in electrokinetic cell field.Therefore, find more
The new electrode materials of safety are the important topics of Study on Li-ion batteries.
With TiO2The nano-scale lithium ion battery oxide cathode material of new generation grown up for matrix, due to its deintercalation
Lithium current potential is high, can effectively suppress the decomposition that electrolyte shows in electrode material, therefore, with very excellent electrochemical reversibility
Energy.In addition, such material is the characteristics of maximum, can be maximum because the reaction of electrochemistry storing up electricity all occurs on higher current potential
The precipitation of lithium is avoided to limit, therefore, such material can not only be reduced because the lithium source that irreversible electrolyte decomposition is caused disappears
Consumption problem, and Li dendrite can be avoided in the precipitation of electrode surface, thus avoid barrier film to puncture the battery caused micro- short
Road, effectively improves the security of lithium ion battery.
But when this kind of zero volume effect oxide material is as lithium ion battery negative material, due to its characteristic of semiconductor,
Its electronics and lithium ion conducting rate are relatively low, thus have to by lowering the size of material improve contact of the material with conductive agent
Area could meet high current charge-discharge condition.Therefore it is by material mostly for the preparation of this kind of oxide material composite negative pole
It is highly dispersed in conductive agent, and improves the quality and percent by volume of conductive agent in the electrodes, overcomes material low in itself
Electric conductivity.But more conductive agent is added into negative material, its electric conductivity is on the one hand improved, and to a certain extent
The bulk effect in electrochemical process is reduced, but on the other hand, also reduces the bulk density of electrode.
The content of the invention
The purpose of this utility model is to provide a kind of lithium ion battery electrode plates, for titanium dioxide/niobium titanyl
There is provided a kind of new negative pole composite pole piece with three-dimensional net structure for the low conductive characteristic of thing.The pole piece by titanium dioxide/
Niobium titanium oxide composite negative pole material, bore area are coated with the 3-dimensional metal collector skeleton and lug composition of carbon-coating.It is this
New construction does not introduce conductive agent and binding agent, passes through titanium dioxide/niobium-titanium oxide composite negative pole material, Polymer-pyrolysis carbon
The bonding force between three-dimensional framework collector with coating carbon-coating constitutes pole piece, the basic configuration formed by 3-dimensional metal network
And the pyrolytic carbon between the carbon-coating and negative pole particle of collector surface mesh improves the electrical contact performance of electrode active material, changes
It is apt to its cyclical stability.
A kind of lithium ion battery electrode plates, the electrode plates are made up of pole piece body and lug,
The pole piece body party is collector skeleton, and the collector skeleton has three-dimensional net structure, the three-dimensional
The grid that network structure is constituted is irregular shape grid；The collector skeleton surface mesh is covered with carbon-coating；The grid
Inside is filled up completely with by filler, and the filler is that titanium dioxide/niobium-titanium oxide particle is scattered in Polymer-pyrolysis carbon
The mixture of formation.
The li-ion electrode pole piece that the utility model is provided, its main body is collector skeleton, and the collector skeleton is used
Three-dimensional net structure rather than the conventional two dimensional surface metallic film of conventional lithium ion battery, collector not only play afflux effect,
And also serve as the supporting construction of the basic framework formation electrode of electrode.The three-dimensional net structure formation of the collector skeleton
Grid is irregular form hole.The internal surface of hole of collector skeleton with three-dimensional irregular holes is covered with the carbon of high conductivity
Layer；Titanium dioxide/niobium-titanium oxide composite negative pole material is scattered in Polymer-pyrolysis carbon and is fixed on afflux by pyrolytic carbon
In the network structure of body skeleton formation, the electron transport by collector completes embedding de- lithium process, is the activated centre of electrode；Lug
It is connected with metal collector spot welding, current path is connected to form with external circuit.This three-dimensional interstitital texture is conducive to improving afflux
Adhesion between body and titanium dioxide/niobium-titanium oxide composite negative pole material, electrode material is effectively bound by three-dimensional and not advised
Then in cavity structure.The carbon-coating of 3-dimensional metal collector bore area further improves electric conductivity, improves following for overall electrode
Ring stability.
The lithium ion battery electrode plates described in the utility model preferably titanium dioxide/niobium-titanium oxide particle passes through
The cementation of the Polymer-pyrolysis carbon of Polymer-pyrolysis generation is fixed in the irregular three-D grid of collector skeleton.
The thickness of the lithium ion battery electrode plates described in the utility model preferably carbon-coating is 1~10 micron.
Lithium ion battery described in the utility model with electrode plates preferably the carbon-coating material be graphitic carbon, graphene,
Activated carbon, one kind of agraphitic carbon or its mixture.
The lithium ion battery electrode plates described in the utility model preferably carbon-coating is by the way that the immersion of collector skeleton is contained
Drying is overlayed on collector surface mesh after having in the solution of carbon material.
Lithium ion battery described in the utility model is titanium oxide/niobium titanium oxide with the electrode plates preferably filler
Grain is composited with polymer high temperature pyrolysis carbon, and the titanium dioxide/niobium-titanium oxide particle is spherical niobium titanium oxide surface
Anatase titanium dioxide particle is dispersed with, the unformed niobium titanium oxide is with formula TixNbyO2x+2.5yCompound,
X=0.1~1, y=1~2；The polymer be it is any can be pyrolyzed at high temperature be carbon polymer.
Further, it is preferable to which the polymer is polypropylene, polyvinyl chloride.
Lithium ion battery described in the utility model is electrode activity thing mass-energy with the electrode plates preferably collector skeleton
Enough dispersed its neutralize surface, and with certain high-temperature stability and current collecting material with good conductivity, preferably foam
Nickel or foam copper.
The beneficial effects of the utility model are：Lithium ion battery provided by the utility model does not introduce biography with electrode plates
The conductive agent and binding agent commonly used in system electrodes of lithium-ion batteries, but pass through active composite electrode material and endoporus coating carbon-coating
Three-dimensional network skeleton structure collector between the cementation of Polymer-pyrolysis carbon be configured with good dispersion and height
The pole piece of cementability, this is the distinguishing feature for the construction that the utility model is different from other types pole piece.And with low cost,
The advantages of easy-formation.
Brief description of the drawings
Fig. 1 is a kind of lithium ion battery electrode plates microtexture schematic diagram；
Fig. 2 is a kind of lithium ion battery electrode plates basic structure schematic diagram, and reference is as follows：
1st, collector skeleton, 2, carbon-coating, 3, titanium dioxide/niobium-titanium oxide particle, 4, Polymer-pyrolysis carbon, 5, lug.
Embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments, is conventional method unless otherwise specified；The reagent and material, such as
Without specified otherwise, commercially obtain.
Embodiment 1
A kind of lithium ion battery electrode plates, the electrode plates are made up of pole piece body and lug 5, the lug 5
It is welded on pole piece main body outer rim one end.
The pole piece body party is collector skeleton 1, and the collector skeleton 1 has three-dimensional net structure, described three
The grid that dimension network structure is constituted is irregular shape grid；The surface mesh of collector skeleton 1 is covered with carbon-coating 2；It is described
It is filled up completely with inside grid by filler, the filler is that titanium dioxide/niobium-titanium oxide particle 3 is scattered in Polymer-pyrolysis
The mixture formed in carbon 4.
Bonding for the Polymer-pyrolysis carbon 4 that the titanium dioxide/niobium-titanium oxide particle is generated by Polymer-pyrolysis is made
With being fixed in the irregular three-D grid of collector skeleton 1.The thickness of the carbon-coating 2 is 8 microns.The carbon materials of the carbon-coating 2
Expect for graphite carbon-coating.The carbon-coating 2 overlays on afflux by the way that collector skeleton 1 is immersed into rear drying in the solution containing graphite carbon dust
On volume mesh surface.
The filler is that titanium oxide/niobium Titanium oxide particles are composited with polymer high temperature pyrolysis carbon, the dioxy
It is that spherical niobium titanium oxide Dispersion on surface has anatase titanium dioxide particle to change titanium/niobium Titanium oxide particles, described unformed
Niobium titanium oxide is with formula TixNbyO2x+2.5yCompound, x=0.5, y=2；The polymer is polypropylene；The collection
Fluid skeleton 1 is nickel foam.
Embodiment 2
A kind of lithium ion battery electrode plates, the electrode plates are made up of pole piece body and lug 5, the lug 5
It is welded on pole piece main body outer rim one end.
The pole piece body party is collector skeleton 1, and the collector skeleton 1 has three-dimensional net structure, described three
The grid that dimension network structure is constituted is irregular shape grid；The surface mesh of collector skeleton 1 is covered with carbon-coating 2；It is described
It is filled up completely with inside grid by filler, the filler is that titanium dioxide/niobium-titanium oxide particle 3 is scattered in Polymer-pyrolysis
The mixture formed in carbon 4.
Bonding for the Polymer-pyrolysis carbon 4 that the titanium dioxide/niobium-titanium oxide particle is generated by Polymer-pyrolysis is made
With being fixed in the irregular three-D grid of collector skeleton 1.The thickness of the carbon-coating 2 is 3 microns.The carbon materials of the carbon-coating 2
Expect the mixture for graphene and agraphitic carbon.The carbon-coating 2 contains graphene and unformed by the way that collector skeleton 1 is immersed
Drying is overlayed on collector surface mesh after in the solution of carbon mixing.
The filler is that titanium oxide/niobium Titanium oxide particles are composited with polymer high temperature pyrolysis carbon, the dioxy
It is that spherical niobium titanium oxide Dispersion on surface has anatase titanium dioxide particle to change titanium/niobium Titanium oxide particles, described unformed
Niobium titanium oxide is with formula TixNbyO2x+2.5yCompound, x=0.2, y=1.3；The polymer is polyvinyl chloride；Institute
Collector skeleton 1 is stated for foam copper.
Claims (5)
1. a kind of lithium ion battery electrode plates, it is characterised in that：The electrode plates are by pole piece body and lug (5) group
Into,
The pole piece body party is collector skeleton (1), and the collector skeleton (1) has three-dimensional net structure, with three
The internal surface of hole for tieing up the collector skeleton of irregular holes is covered with the carbon-coating of high conductivity；Titanium dioxide/niobium-titanium oxide is combined
Negative material is scattered in Polymer-pyrolysis carbon and is fixed on by pyrolytic carbon in the network structure of collector skeleton formation.
2. electrode plates according to claim 1, it is characterised in that：The thickness of the carbon-coating (2) is 1~10 micron.
3. electrode plates according to claim 1, it is characterised in that：The carbon material of the carbon-coating (2) is graphitic carbon, graphite
Alkene, activated carbon, one kind of agraphitic carbon.
4. electrode plates according to claim 1, it is characterised in that：The polymer is polypropylene or polyvinyl chloride.
5. electrode plates according to claim 1, it is characterised in that：The collector skeleton (1) is nickel foam or foam
Copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621175772.XU CN206541886U (en) | 2016-10-25 | 2016-10-25 | A kind of lithium ion battery electrode plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621175772.XU CN206541886U (en) | 2016-10-25 | 2016-10-25 | A kind of lithium ion battery electrode plates |
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| Publication Number | Publication Date |
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| CN206541886U true CN206541886U (en) | 2017-10-03 |
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| CN201621175772.XU Expired - Fee Related CN206541886U (en) | 2016-10-25 | 2016-10-25 | A kind of lithium ion battery electrode plates |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403733A (en) * | 2019-01-03 | 2020-07-10 | 通用汽车环球科技运作有限责任公司 | Method for in-situ growth of axial geometric carbon structure in electrode |
| CN112771693A (en) * | 2020-04-23 | 2021-05-07 | 宁德时代新能源科技股份有限公司 | Three-dimensional composite metal lithium cathode, metal lithium battery and device |
| CN113451583A (en) * | 2020-03-27 | 2021-09-28 | 宁德新能源科技有限公司 | Composite current collector, pole piece comprising same, lithium ion battery and electronic device |
-
2016
- 2016-10-25 CN CN201621175772.XU patent/CN206541886U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403733A (en) * | 2019-01-03 | 2020-07-10 | 通用汽车环球科技运作有限责任公司 | Method for in-situ growth of axial geometric carbon structure in electrode |
| CN111403733B (en) * | 2019-01-03 | 2024-03-26 | 通用汽车环球科技运作有限责任公司 | Method for in-situ growth of axial geometry carbon structures in electrodes |
| CN113451583A (en) * | 2020-03-27 | 2021-09-28 | 宁德新能源科技有限公司 | Composite current collector, pole piece comprising same, lithium ion battery and electronic device |
| CN113451583B (en) * | 2020-03-27 | 2022-08-19 | 宁德新能源科技有限公司 | Composite current collector, pole piece comprising same, lithium ion battery and electronic device |
| CN112771693A (en) * | 2020-04-23 | 2021-05-07 | 宁德时代新能源科技股份有限公司 | Three-dimensional composite metal lithium cathode, metal lithium battery and device |
| CN112771693B (en) * | 2020-04-23 | 2024-04-12 | 宁德时代新能源科技股份有限公司 | Three-dimensional composite metal lithium cathode, metal lithium battery and device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20191025 |