CN108232108A - A kind of lithium battery anode structure and preparation method thereof, lithium battery structure - Google Patents
A kind of lithium battery anode structure and preparation method thereof, lithium battery structure Download PDFInfo
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H—ELECTRICITY
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- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
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Abstract
The present invention relates to technical field of lithium batteries more particularly to a kind of lithium battery anode structure and preparation method thereof, lithium battery structures.A kind of lithium battery anode structure, the lithium battery anode structure includes plus plate current-collecting body and the anode thin film layer being formed on the plus plate current-collecting body, the anode thin film layer includes positive electrode, and separate plus plate current-collecting body side is sequentially formed with transition zone and decorative layer on the anode thin film layer.Transition zone is provided on anode thin film layer, the interface impedance between anode thin film and decorative layer can effectively be reduced, and the decorative layer on transition zone can effectively prevent being in direct contact for electrolyte and anode thin film layer, it avoids the micro HF in electrolyte and contains the irreversible reaction of the positive battery structure of the decorative layer, inhibit collapsing for anode structure layer under high-voltage charging simultaneously, so that getting a promotion using the reversible capacity of battery and cyclicity made of the anode structure layer.
Description
【Technical field】
The present invention relates to technical field of lithium batteries more particularly to a kind of lithium battery anode structure and preparation method thereof, lithium electricity
Pool structure.
【Background technology】
Lithium battery has the advantages that high-energy density and output services voltage, is widely used in digital electronic goods, electronic
Automobile and extensive energy storage etc..Positive electrode is the important component of lithium battery, directly affect lithium battery capacity,
The parameters such as cycle performance.Common positive electrode has LiFePO4, cobalt acid lithium, LiMn2O4, ternary material etc..But in high voltage
Under, cathode material structure can occur it is irreversible collapse, so as to cause capacity rapid decay.In addition, charging and discharging lithium battery process
In, electrode surface can generate one layer of solid electrolyte interface film (SEI films), compound of the main component for lithium, stable SEI
Film, which can effectively prevent organic macromolecule from entering in electrode material structure, enhances electrode stability, so as to effectively improve the cycle of battery
Performance, but will also result in a part of lithium loss simultaneously, therefore, how generating stable SEI films will solve LiCoO2Battery is high
The critical issue of the high performance such as capacity, high voltage, high-energy.
【Invention content】
For overcome current lithium ion anode structure easily occur it is irreversible collapse, lead to ion battery configuration power capacity
It being lower, the problem of charge and discharge cycles effect is deteriorated, the present invention provides a kind of lithium battery anode stable structure, electric energy specific capacity is high,
Good lithium battery anode structure of charge and discharge cycles effect and preparation method thereof.
In order to solve the above-mentioned technical problem the present invention, provides a technical solution：
A kind of lithium battery anode structure, the lithium battery anode structure include plus plate current-collecting body and are formed in the anode collection
Anode thin film layer on body, the anode thin film layer include positive electrode, far from plus plate current-collecting body on the anode thin film layer
Side is sequentially formed with transition zone and decorative layer.
Preferably, the transition zone includes the positive electrode and fast-ionic conductor that include described in the anode thin film layer, institute
It states decorative layer and includes fast-ionic conductor, the fast-ionic conductor is Li1+yAyTi2-x-yMx(PO4)3(0≤x≤2,0≤y≤2 and 0
≤ x+y≤2, A=Al, Ga, In, Sc, Y, M=Ge, Zr, Hf etc.), La2/3-xLi3xTiO3Any in (0.05 ＜ x ＜ 0.167)
Kind.
Preferably, the transition region thickness is 50-100nm, and the thickness of the decorative layer is 10-60nm.
In order to solve the above-mentioned technical problem the present invention, provides another technical solution：It is a kind of to prepare above-mentioned lithium battery anode knot
The method of structure：
Anode thin film layer is formed on plus plate current-collecting body using magnetron sputtering method；
Using magnetron sputtering method transition zone is sequentially formed far from the plus plate current-collecting body side on the anode thin film layer
And decorative layer, the transition zone include the positive electrode and fast-ionic conductor included by anode thin film layer, the decorative layer includes
Fast-ionic conductor.
Further, it is specially in the step of formation anode thin film layer on plus plate current-collecting body using magnetron sputtering method：
Plus plate current-collecting body is provided as substrate；
Anode thin film layer target is installed；
Vacuum is extracted into 5 X 10-4Below Pa；
The temperature of substrate frame is heated to 100-400 DEG C；
Adjusting air pressure is the ratio 7 of 0.5-1.5Pa, argon gas and oxygen:3-9:1st, sputtering power is splashed for 80-120W
It penetrates, sputtering time 2h, obtains the anode thin film layer being formed on the plus plate current-collecting body.
Preferably, the air pressure is the ratio of 1.0Pa, argon gas and oxygen：9:1, sputtering power is preferably：120W.
Using magnetron sputtering method transition zone is sequentially formed far from the plus plate current-collecting body side on the anode thin film layer
And decorative layer, the transition zone include the positive electrode and fast-ionic conductor included by anode thin film layer, the decorative layer includes
Fast-ionic conductor is as follows：
Cobalt acid lithium (LiCoO is installed2) target and fast-ionic conductor Li0.33La0.56TiO3Target；
The anode thin film layer being formed on plus plate current-collecting body is mounted in substrate frame；
Vacuum is extracted into 5 X 10-4Below Pa；
The temperature of substrate frame is heated to 100-400 DEG C；
Adjust the ratio 7 of air pressure 0.5-1.0Pa, argon gas and oxygen:3-9:1st, sputtering power is sputtered for 80-120W；
Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Target sputters 30min jointly, is formed
Transition zone on the anode thin film layer；
Fast-ionic conductor Li0.33La0.56TiO3Target individually sputters 30min again；
It is made annealing treatment at 400 DEG C, time 3h, obtains being formed in the decorative layer on the transition zone.
Preferably, cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3During target cosputtering
Cobalt acid lithium (LiCoO2) sputtering power of target is preferably 120W, fast-ionic conductor Li0.33La0.56TiO3The sputtering power of target
Preferably：100W；Fast-ionic conductor Li0.33La0.56TiO3The sputtering power that target individually sputters 30min is preferably 100W.
Preferably, cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3During target cosputtering
The ratio of argon gas and oxygen presses following graded, is followed successively by：In argon gas：Oxygen=9:1、8:2 and 7:It is respectively sputtered under conditions of 3
10 minutes.
Preferably, the third object of the present invention is to provide a kind of lithium battery structure, including lithium electricity as described above
The negative pole structure that pond anode structure and anode structure are oppositely arranged and the electrolyte between anode structure and negative pole structure
Layer.
Relative to the prior art, transition zone is provided on anode thin film layer, can effectively reduce anode thin film layer and modification
Interface impedance between layer, and the decorative layer on transition zone can effectively prevent directly to connect between electrolyte and anode thin film layer
It touches, avoid the micro HF in electrolyte and contains the irreversible reaction of the anode structure of the anode thin film layer, inhibit simultaneously
Anode structure collapses under high-voltage charging, so that obtained using the reversible capacity of battery and cyclicity made of the anode structure
To promotion.
Transition zone includes the positive electrode that anode thin film layer is included, while it comprises the fast ions that decorative layer is included
Conductor plays good transitional function between anode thin film layer and decorative layer, can enhance anode thin film layer and modification very well
Lattice between layer, reduces the interface impedance between anode thin film layer and decorative layer, enhancing conductive ion in decorative layer and
Conductive performance between anode thin film layer, and then improve the conductive capability of the electrode structure comprising the transition zone.
The thickness of the transition zone is 50-100nm, can lower the interface between decorative layer and anode thin film layer well
Effect, so as to reduce interface impedance.
The thickness of decorative layer is 10-60nm.The thickness of finishing coat, can will be electric within the scope of 10-60nm
Solution matter and transition zone separate, while also can guarantee the conductive performance of conductive ion and anode thin film layer in electrolyte.
The transition zone and decorative layer are formed on the anode thin film layer using magnetron sputtering method, the transition zone includes
Cobalt acid lithium and fast-ionic conductor, the decorative layer include fast-ionic conductor, can obtain finer and close finishing coat.
Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Cobalt acid lithium during target cosputtering
(LiCoO2) sputtering power of target is preferably 120W, fast-ionic conductor Li0.33La0.56TiO3The sputtering power of target is preferably：
100W.Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Argon gas and oxygen during target cosputtering
Ratio by following graded, be followed successively by：In argon gas：Oxygen=9:1、8:2 and 7:It is respectively sputtered under conditions of 3 10 minutes.Make
It is dense that the transition layer structure formed must be sputtered.
The third object of the present invention is to provide a kind of lithium battery structure, including lithium battery anode structure described above
And electrolyte layer.The lithium battery structure stability is high, and charge and discharge cycles effect is good.
【Description of the drawings】
Fig. 1 is the overall structure diagram of lithium battery anode structure in the present invention；
Fig. 2 is that anode thin film layer is formed in the flow chart on the plus plate current-collecting body in the present invention；
Fig. 3 is that transition zone and decorative layer are splashed to the flow chart on anode thin film layer in the present invention；
Fig. 4 is the overall structure diagram of lithium battery structure in the present invention.
【Specific embodiment】
In order to make the purpose of the present invention, technical solution and advantage are more clearly understood, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, a kind of lithium battery anode structure 30, which includes 1001 He of plus plate current-collecting body
The anode thin film layer 1002 being formed on the plus plate current-collecting body 1001, the anode thin film layer 1002 include positive electrode,
On the anode thin film layer 1002 transition zone 1003 and decorative layer 1004 are sequentially formed with far from 1001 side of plus plate current-collecting body.
Collector refers to the structure for collecting electric current or part, and metal foil, such as copper are generally referred on ion battery
Foil, aluminium foil, lug can be included by referring to.Its major function is to collect to be formed by the electric current that cell active materials generate
Larger current versus output, therefore collector should come into full contact with active material, and as small as possible be preferred is answered in internal resistance.Afflux
Body is generally divided into plus plate current-collecting body and negative, pole collector, generally using aluminium foil as plus plate current-collecting body, copper in lithium battery material
Foil is as negative current collector.Concrete reason is that aluminium easily aoxidizes, and easily forming dense oxidation film on its surface protects it from oxygen
Change, stable potential is high, in the easy embedding lithium ion of cathode of low potential, is unfit to do negative current collector.Copper meeting under high potential
Oxidation, is unfit to do plus plate current-collecting body.In the present invention, the plus plate current-collecting body 1001 used is aluminium foil.
The positive electrode that the anode thin film layer 1002 formed on plus plate current-collecting body 1001 includes is selected from layer structure
LiCoO2(cobalt acid lithium), LiNixCoyM1-x-yO2(0<x≤1,0≤y<1 and 0<Any one of x+y≤1, M=Al, Mn etc.).
Preferably, the positive electrode that anode thin film layer 1002 includes mainly selects cobalt acid lithium (LiCoO2).Cobalt acid lithium
(LiCoO2) stability of period is good, good reversibility, specific capacity are high, it is convenient to prepare, be widely used in every field.Cobalt acid simultaneously
The chemical property of lithium is superior, can inhibit battery polarization well, and less fuel factor improves high rate performance, can protect well
Plus plate current-collecting body 1001 is not corroded from an electrolyte.
Due to during liquid lithium battery first charge-discharge, electrode material (including anode structure layer and negative electrode material layer)
It reacts on solid-liquid phase interface with electrolyte, forms one layer of passivation layer for being covered in electrode material surface.This passivation layer
It is a kind of boundary layer, it is Li that the feature with solid electrolyte, which is electronic body,+Excellence conductor, Li+Can pass through should
Passivation layer is freely embedded and deviates from, therefore this layer of passivating film is referred to as " solid electrolyte interface film " (solid
Electrolyte interface) abbreviation SEI films.It is just very thin that this layer of SEI film can effectively prevent macromolecular solvent from entering through
Film layer 1002, into plus plate current-collecting body 1001, guard electrode structure enhances cyclicity, but this process can cause the loss of lithium.
In addition, containing micro hydrofluoric acid (HF) in traditional electrolyte, this is mainly due to the presence of traces of moisture in electrolyte,
Hydrofluoric acid (HF) can react with electrode structure and SEI films, cause the unstable of SEI films；It is easy to cause electrode structure simultaneously
It is corroded, it is caused to collapse.Therefore a transition zone 1003 and decorative layer 1004 are formed on anode thin film layer 1001, as artificial
SEI films.
The identical positive electrode that the transition zone 1003 includes and the anode thin film layer 1002 is included, the transition
Layer 1003 further includes fast-ionic conductor.That is, when the anode thin film layer 1002 includes cobalt acid lithium (LiCoO2) as positive electrode
When, then also include cobalt acid lithium (LiCoO accordingly in the transition zone 10032)。
The decorative layer 1004 includes the fast-ionic conductor identical in the transition zone 1003,1003 He of transition zone
The fast-ionic conductor that the decorative layer 1004 includes is Li1+yAyTi2-x-yMx(PO4)3(0≤x≤2,0≤y≤2 and 0≤x+y≤
2, A=Al, Ga, In, Sc, Y, M=Ge, Zr, Hf etc.), La2/3-xLi3xTiO3Any one of (0.05 ＜ x ＜ 0.167).
Fast-ionic conductor：Also referred to as superionic conductors is called solid electrolyte sometimes, it is different from general ion conductor most
Essential characteristic be within the scope of certain temperature have can be comparable with liquid electrolyte ionic conductivity (1 X 10-3S/cm)
With low ionic conductance activation energy (≤0.40eV).
Preferably, in the present invention, the fast-ionic conductor that the transition zone 1003 includes is specially Li0.33La0.56TiO3。
Li0.33La0.56TiO3The solid electrolyte of solid electrolyte intermediate ion conductivity highest (1mS/cm), can effectively improve lithium from
The conduction velocity of son improves the electric conductivity of anode structure layer 100.
In the present invention, the fast ion that the fast-ionic conductor that the decorative layer 1004 includes includes with the transition zone 1003
Conductor is identical, is Li0.33La0.56TiO3。
In the present invention, the positive electrode that transition zone 1003 is included including anode thin film layer 1002, while it comprises
The fast-ionic conductor that decorative layer 1004 is included plays good transition between anode thin film layer 1002 and decorative layer 1004
Effect can enhance lattice between anode thin film layer 1002 and decorative layer 1004 well, reduce anode thin film layer 1002
Interface impedance between decorative layer 1004, conduction of the enhancing conductive ion between decorative layer 1004 and anode thin film layer 1002
Performance, and then improve the conductive capability of the electrode structure comprising the transition zone 1003.
Decorative layer 1004 avoids directly connecing between electrolyte and anode thin film layer 1002 well as artificial SEI films
It touches, the loss of lithium ion during charging cycle can be reduced well, improve the coulomb effect of first charge-discharge, it is close to improve energy
Degree, while bad side reaction between anode thin film layer 1002 and electrolyte contact interface is inhibited to occur, effectively improve anode structure
Stability.Can also it inhibit in During high voltage charge simultaneously, since lithium ion abjection causes collapsing for anode structure, enhancing is just
The stability of pole structure improves the cycle performance of battery.In the present invention, after foring transition zone 1003 and decorative layer 1004
The blanking voltage of anode structure layer can reach 4.5V.
The second object of the present invention is to provide a kind of preparation method of lithium battery anode structure.
A kind of preparation method of lithium battery anode structure, includes the following steps：
V1：Anode thin film layer is formed on plus plate current-collecting body using magnetron sputtering method；
V2：Using magnetron sputtering method transition is sequentially formed far from the plus plate current-collecting body side on the anode thin film layer
Layer and decorative layer, the transition zone include the positive electrode and fast-ionic conductor included by anode thin film layer, the decorative layer packet
Include fast-ionic conductor.
Referring to Fig. 2, in above-mentioned steps, magnetron sputtering method shape on plus plate current-collecting body 1001 is utilized in the step V1
Into anode thin film layer 1002, cobalt acid lithium (LiCoO is selected in present embodiment2) illustrated as specific positive electrode, specifically
Include the following steps：
V11：Plus plate current-collecting body is provided as substrate；
V12：Anode thin film layer target is installed；
V13：Vacuum is extracted into 5 X 10-4Below Pa；
V14：The temperature of substrate frame is heated to 100-400 DEG C；
V15：Adjusting air pressure is the ratio 7 of 0.5-1.5Pa, argon gas and oxygen:3-9:1st, sputtering power is carried out for 80-120W
Sputtering, sputtering time 2h obtain the anode thin film layer 1002 being formed on the plus plate current-collecting body 1001.
In above-mentioned steps V11, plus plate current-collecting body 1001 is fixed in the substrate frame of magnetron sputtering cavity；
In above-mentioned V13, anode thin film layer target selects cobalt acid lithium (LiCoO2)。
In above-mentioned steps V15, air pressure is preferably that the ratio of 1.0Pa, argon gas and oxygen is preferably 9:1st, sputtering power is excellent
It is selected as 120W to be sputtered, the obtained thickness of anode thin film layer 1002 is 200-400nm.
Referring to Fig. 3, in the step V2 by using magnetron sputtering method on the anode thin film layer 1002 far from just
Collector 1001 side in pole sequentially forms the transition zone 1003 and decorative layer 1004, in present embodiment, specifically selects anode
Material of lithium cobalt acid (LiCoO2) and fast-ionic conductor Li0.33La0.56TiO3It illustrates, is as follows：
V21：Cobalt acid lithium (LiCoO is installed2) target and fast-ionic conductor Li0.33La0.56TiO3Target；
V22：The anode thin film layer being formed on plus plate current-collecting body is mounted in substrate frame；
V23：Vacuum is extracted into 5 X 10-4Below Pa；
V24：The temperature of substrate frame is heated to 100-400 DEG C；
V25：Adjust the ratio 7 of air pressure 0.5-1.0Pa, argon gas and oxygen:3-9:1st, sputtering power is splashed for 80-120W
It penetrates；
V26：Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Target sputters 30min jointly, obtains
The transition zone 1003 being formed on the anode thin film layer 1002；
V27：Fast-ionic conductor Li0.33La0.56TiO3Target individually sputters 30min again；
V28：It is made annealing treatment at 400 DEG C, time 3h, obtains being formed in the modification on the transition zone 1003
Layer 1004.
Preferably, in step V26, cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Target splashes altogether
Cobalt acid lithium (LiCoO during penetrating2) sputtering power of target is preferably 120W, fast-ionic conductor Li0.33La0.56TiO3Target
Sputtering power be preferably：100W.
Preferably, in step V26, cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Target splashes altogether
The ratio of argon gas and oxygen is followed successively by by following graded during penetrating：In argon gas：Oxygen=9:1、8:2 and 7:3 item
It is respectively sputtered under part 10 minutes.
Preferably, in step V27：Fast-ionic conductor Li0.33La0.56TiO3Target individually sputters the sputtering power of 30min again
Preferably 100W.
The thickness of transition zone 1003 obtained in step V26 is 50-100nm, the decorative layer obtained in the step 28
1004 thickness is 10-60nm.
Referring to Fig. 4, the third object of the present invention is to provide a kind of lithium battery structure 10, which wraps
It includes above-mentioned lithium battery anode structure 30, negative pole structure layer 400 and is arranged between the negative pole structure layer 400 and anode structure layer 30
Electrolyte layer 300.The electrolyte layer 300 used in invention includes lithium salts LiPF6、LiBF4Any one of.It is wherein described negative
Pole structure sheaf 400 includes negative current collector layer 4002 and the negative film layer 4002 being formed on the negative current collector layer 4002,
For the copper foil used in the present invention as negative current collector layer 4002, the anode thin film layer 1002 and negative film layer 4002 are opposite
Setting.
Relative to the prior art, transition zone is provided on anode thin film layer, can effectively reduce anode thin film layer and modification
Interface impedance between layer, and the decorative layer on transition zone can effectively prevent directly to connect between electrolyte and anode thin film layer
It touches, avoid the micro HF in electrolyte and contains the irreversible reaction of the anode structure of the anode thin film layer, inhibit simultaneously
Anode structure collapses under high-voltage charging, so that obtained using the reversible capacity of battery and cyclicity made of the anode structure
To promotion.
Transition zone includes the positive electrode that anode thin film layer is included, while it comprises the fast ions that decorative layer is included
Conductor plays good transitional function between anode thin film layer and decorative layer, can enhance anode thin film layer and modification very well
Lattice between layer, reduces the interface impedance between anode thin film layer and decorative layer, enhancing conductive ion in decorative layer and
Conductive performance between anode thin film layer, and then improve the conductive capability of the electrode structure comprising the transition zone.
The thickness of the transition zone is 50-100nm, can lower the interface between decorative layer and anode thin film layer well
Effect, so as to reduce interface impedance.
The thickness of decorative layer is 10-60nm.The thickness of finishing coat, can will be electric within the scope of 10-60nm
Solution matter and transition zone separate, while also can guarantee the conductive performance of conductive ion and anode thin film layer in electrolyte.
The transition zone and decorative layer are formed on the anode thin film layer using magnetron sputtering method, the transition zone includes
Cobalt acid lithium and fast-ionic conductor, the decorative layer include fast-ionic conductor, can obtain finer and close finishing coat.
Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Cobalt acid lithium during target cosputtering
(LiCoO2) sputtering power of target is preferably 120W, fast-ionic conductor Li0.33La0.56TiO3The sputtering power of target is preferably：
100W.Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Argon gas and oxygen during target cosputtering
Ratio by following graded, be followed successively by：In argon gas：Oxygen=9:1、8:2 and 7:It is respectively sputtered under conditions of 3 10 minutes.Make
It is dense that the transition layer structure formed must be sputtered.
The third object of the present invention is to provide a kind of lithium battery structure, including lithium battery anode structure described above
And electrolyte layer.The lithium battery structure stability is high, and charge and discharge cycles effect is good.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all originals in the present invention
Any modification made within then, equivalent replacement and improvement etc. should all be included within protection scope of the present invention.
Claims (10)
1. a kind of lithium battery anode structure, it is characterised in that：The lithium battery anode structure includes plus plate current-collecting body and is formed in institute
State the anode thin film layer on plus plate current-collecting body, the anode thin film layer includes positive electrode, separate on the anode thin film layer
Plus plate current-collecting body side is sequentially formed with transition zone and decorative layer.
2. lithium battery anode structure as described in claim 1, it is characterised in that：The transition zone includes the anode thin film layer
It is described including positive electrode and fast-ionic conductor, the decorative layer include fast-ionic conductor, the fast-ionic conductor be Li1+ yAyTi2-x-yMx(PO4)3(0≤x≤2,0≤y≤2 and 0≤x+y≤2, A=Al, Ga, In, Sc, Y；M=Ge, Zr, Hf etc.),
La2/3-xLi3xTiO3Any one of (0.05 ＜ x ＜ 0.167)).
3. lithium battery anode structure as described in claim 1, it is characterised in that：The transition region thickness is 50-100nm,
The thickness of the decorative layer is 10-60nm.
4. a kind of preparation method of lithium battery anode structure, includes the following steps：
Anode thin film layer is formed on plus plate current-collecting body using magnetron sputtering method；
Transition zone is sequentially formed far from the plus plate current-collecting body side and repair using magnetron sputtering method on the anode thin film layer
Adorn layer, the transition zone include anode thin film layer included by positive electrode and fast-ionic conductor, the decorative layer include soon from
Sub- conductor.
5. the preparation method of lithium battery anode structure as claimed in claim 4, it is characterised in that：Using magnetron sputtering method just
It is specially the step of formation anode thin film layer on the collector of pole：
Plus plate current-collecting body is provided as substrate；
Anode thin film layer target is installed；
Vacuum is extracted into 5 X 10-4Below Pa；
The temperature of substrate frame is heated to 100-400 DEG C；
Adjusting air pressure is the ratio 7 of 0.5-1.5Pa, argon gas and oxygen:3-9:1st, sputtering power is sputtered for 80-120W, is splashed
The time is penetrated as 2h, obtains the anode thin film layer being formed on the plus plate current-collecting body.
6. the preparation method of lithium battery anode structure as claimed in claim 5, it is characterised in that：The sputtering power is preferably
120W。
7. the preparation method of lithium battery anode structure as claimed in claim 4, it is characterised in that：Using magnetron sputtering method in institute
It states and the transition zone and decorative layer is formed on anode thin film layer, be as follows：
Cobalt acid lithium (LiCoO is installed2) target and fast-ionic conductor Li0.33La0.56TiO3Target；
The anode thin film layer being formed on plus plate current-collecting body is mounted in substrate frame；
Vacuum is extracted into 5 X 10-4Below Pa；
The temperature of substrate frame is heated to 100-400 DEG C；
Adjust the ratio 7 of air pressure 0.5-1.0Pa, argon gas and oxygen:3-9:1st, sputtering power is sputtered for 80-120W；
Cobalt acid lithium (LiCoO2) target and fast-ionic conductor Li0.33La0.56TiO3Target sputters 30min jointly, obtains being formed in institute
State the transition zone on anode thin film layer；
Fast-ionic conductor Li0.33La0.56TiO3Target individually sputters 30min again；
It is made annealing treatment at 400 DEG C, time 3h, obtains being formed in the decorative layer on the transition zone.
8. the preparation method of lithium battery anode structure as claimed in claim 7, it is characterised in that：Cobalt acid lithium (LiCoO2) target
With fast-ionic conductor Li0.33La0.56TiO3Cobalt acid lithium (LiCoO during target cosputtering2) sputtering power of target is preferably
120W, fast-ionic conductor Li0.33La0.56TiO3The sputtering power of target is preferably：100W；Fast-ionic conductor Li0.33La0.56TiO3
The sputtering power that target individually sputters 30min is preferably 100W.
9. the preparation method of lithium battery anode structure as claimed in claim 7, it is characterised in that：Cobalt acid lithium (LiCoO2) target
With fast-ionic conductor Li0.33La0.56TiO3The ratio of argon gas and oxygen presses following graded during target cosputtering, according to
It is secondary to be：In argon gas：Oxygen=9:1、8:2 and 7:It is respectively sputtered under conditions of 3 10 minutes.
10. a kind of lithium battery structure, it is characterised in that：Including such as claim 1-3 any one of them lithium battery anode structure,
And the negative pole structure that is oppositely arranged of anode structure and the electrolyte layer between anode structure and negative pole structure.
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