CN109817926A - A kind of prelithiation material and preparation method thereof and lithium battery - Google Patents
A kind of prelithiation material and preparation method thereof and lithium battery Download PDFInfo
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- CN109817926A CN109817926A CN201910072281.4A CN201910072281A CN109817926A CN 109817926 A CN109817926 A CN 109817926A CN 201910072281 A CN201910072281 A CN 201910072281A CN 109817926 A CN109817926 A CN 109817926A
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- 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
- H01—ELECTRIC ELEMENTS
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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Abstract
The invention discloses a kind of prelithiation material and preparation method thereof and lithium battery, the prelithiation material includes at least kernel prelithiation material；Wherein, the general formula of the kernel prelithiation material is (LisM1t)(CuxM2y)(OaM3b), x+y=1, a+b=2；1 < s≤2,0≤t≤1,0.5≤x≤1,0≤y≤0.5；0≤b≤2；0 < t+y+b；Wherein M1 is the first metallic element, one or more mixing including alkali metal element, alkali earth metal；M2 is the second metallic element, one or more mixing including alkali earth metal, transition metal element；M3 is one or more mixing of F, S, N, Br, Cl.
Description
Technical field
The present invention relates to lithium battery material technical field more particularly to a kind of prelithiation material and preparation method thereof and lithium electricity
Pond.
Background technique
Output voltage is high, energy density is high, have extended cycle life, have a safety feature, memoryless effect because having for lithium ion battery
The features such as answering is successfully applied to mobile power source field as main energy storage device.For further satisfaction power grid energy storage, electronic
The demand of automobile and consumer electronics product to energy storage device, more long circulation life, safety is more preferable, energy density is higher
Electrode material and lithium battery system become research hotspot.
Commercial Li-ion battery cathode mainly uses graphite material at present, and the theoretical capacity of graphite material is in 372mAh/
G limits the specific capacity of lithium ion battery entirety.With the alloy material of cathode of higher theoretical capacity gradually replace graphite material at
For trend.However with lithium ion irreversible reaction occurs for most of height ratio capacity negative electrode material generally existing first weeks, to consume
Lithium source in lithium battery reduces battery entirety specific capacity.
Therefore solve the problems, such as that all low efficiencys of the head of the alloy material of cathode of height ratio capacity become key.Wherein prelithiation skill
Art proposes to become most possible solution in the first week supplement lithium ion of Battery formation.However existing prelithiation technology is big
There are prelithiation amounts to be difficult to control for part, prelithiation amount is small, there are side reaction, it is high to environmental requirement, room temperature is unstable the problems such as,
Therefore there is an urgent need to propose a kind of prelithiation material and preparation method thereof to make up this technical bottleneck.
Summary of the invention
The object of the present invention is to provide a kind of prelithiation material and preparation method thereof and lithium batteries, to solve the prior art
There are the problem of.
To achieve the above object, in a first aspect, the embodiment of the invention provides a kind of prelithiation material, kernel is included at least
Prelithiation material；
Wherein, the general formula of the kernel prelithiation material is (LisM1t)(CuxM2y)(OaM3b), x+y=1, a+b=2；1
< s≤2,0≤t≤1,0.5≤x≤1,0≤y≤0.5；0≤b≤2；0 < t+y+b；Wherein M1 is the first metallic element, including
One or more mixing of alkali metal element, alkali earth metal；M2 is the second metallic element, including alkali earth metal, mistake
Cross one or more mixing of metallic element；M3 is one or more mixing of F, S, N, Br, Cl.
Preferably, the prelithiation material is combined by the kernel prelithiation material and covering material；
The covering material be oxide material, phosphate material, semiconductor material, fast ion conducting material one kind or
Multiple combinations；
The oxide material include: aluminium oxide, titanium oxide, magnesia, iron oxide, zinc oxide, niobium oxide, tantalum oxide,
One or more combinations of manganese oxide；
The phosphate material includes: one or more combinations of aluminum phosphate, lithium phosphate, titanium phosphate, magnesium phosphate；
The fast ion conducting material includes: Garnet-type solid electrolyte material, NASCION type solid state electrolysis material
One of material, LISCION solid electrolyte material, Ca-Ti ore type solid electrolyte material and its derived material；
The semiconductor material includes: one of Si, InAs, AlSb or multiple combinations；
The covering material is uniformly or non-uniformly coated on the surface of the kernel prelithiation material；The covering material
Mass ratio with the kernel prelithiation material is between 1:1000-1:1.
It is further preferred that the mass ratio of the covering material and the kernel prelithiation material 1:1000-1:20 it
Between.
Preferably, the M1 specifically include aluminium, magnesium, sodium, potassium, calcium, nickel, caesium, rubidium it is one or more；The M2 is specifically wrapped
Include aluminium, titanium, iron, vanadium, tungsten, niobium, tantalum, zirconium, lanthanum, manganese, magnesium, calcium, cobalt, nickel, zinc, barium it is one or more.
Preferably, the granularity of the prelithiation material is 10nm-50um, and particle proterties are round, ellipse, sheet or more
Side shape it is one or more；The de- lithium capacity of the prelithiation material is 200mAh/g-1000mAh/g, and taking off lithium voltage is 1-6V.
Preferably, the prelithiation material is applied in battery, reacts, is melted into as (Li in first all charge and discharges’
M1t’)(Cux’M2y’)(Oa’M3b’), wherein 0≤s '≤1,0≤t '≤1,0≤x '≤1,0≤y '≤1,0≤b '≤1,1≤a '
< 2, and s ', t ', x ', y ' it is not simultaneously zero.
Second aspect, the embodiment of the invention provides a kind of preparation methods, comprising:
By the raw material of prelithiation material, it is put into mixing apparatus according to stoichiometric ratio and is uniformly mixed, mixed
Close object；Wherein, the raw material of the prelithiation material include the respective oxide of several elements of Li, Cu, M1, M2, M3, hydroxide
Object, carbonate, phosphate, ammonium salt, organic salt and metallic compound；Wherein M1 is the first metallic element, including alkali metal member
One or more mixing of element, alkali earth metal；M2 is the second metallic element, including alkali earth metal, transition metal member
One or more mixing of element；M3 is one or more mixing of F, S, N, Br, Cl；
The mixture is put into agglomerating plant and is sintered, sintering temperature obtains half between 300 DEG C -1050 DEG C
Finished product material；
The semi-finished product material is put into crushing plant and carries out primary breakup；
Semifinished material investment disintegrating apparatus after the primary breakup is crushed, the prelithiation material is obtained.
Preferably, the mixing apparatus includes: double movement mixers, three-dimensional mixer, V-Mixer, single cone double helix
One of mixing machine, slot type spiral ribbon mixer and horizontal Agravicmixer；
The agglomerating plant includes: one of batch-type furnace, tube furnace, roller-way cellar and rotary furnace；
The crushing plant includes: jaw crusher, gyratory crusher, impact breaker, hammer mill and roll-type
One of crusher；
The disintegrating apparatus includes: flat air flow crusher, fluidized bed airflow pulverizer, circulating air-flow crushing
Machine, impacting breakers, expansion type crusher, ball mill pulverizer, high speed rotation throwing type pulverizer and high speed rotation impacting type
One of pulverizer；
The sintering specifically includes: in air atmosphere, vacuum atmosphere, nitrogen atmosphere, argon atmosphere, argon nitrogen atmosphere or oxygen
It is sintered under atmosphere.
Preferably, the semifinished material investment disintegrating apparatus after the primary breakup is crushed, obtains the pre- lithium
Change material to specifically include:
Semifinished material investment disintegrating apparatus after the primary breakup is crushed, kernel prelithiation material is obtained；
The kernel prelithiation material and covering material are put into mixing apparatus or fusion device according to required ratio
It is mixed, to carry out cladding processing to the kernel prelithiation material, obtains primary prelithiation material；
Primary prelithiation material is put into agglomerating plant and is sintered, sintering temperature obtains between 200 DEG C -900 DEG C
The prelithiation material.
The third aspect, the embodiment of the invention provides a kind of, and the lithium including prelithiation material described in above-mentioned first aspect is electric
Pond.
Prelithiation material prelithiation material properties provided by the invention is stablized, and the appearance of lithium battery can greatly be improved
Amount, preparation method is simple, abundant raw materials low to environmental requirement, is suitable for large-scale production.
Detailed description of the invention
Below by drawings and examples, the technical solution of the embodiment of the present invention is described in further detail.
Fig. 1 is a kind of preparation method flow chart of prelithiation material provided in an embodiment of the present invention；
Fig. 2 is the preparation method flow chart of another prelithiation material provided in an embodiment of the present invention；
Fig. 3 is scanning electron microscope (SEM) figure of prelithiation material provided in an embodiment of the present invention；
Fig. 4 is X-ray diffraction (XRD) figure of prelithiation material provided in an embodiment of the present invention；
Fig. 5 is the chemical property figure of the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of prelithiation material and preparation method thereof and lithium batteries.
Prelithiation material of the invention includes at least kernel prelithiation material；Wherein, the general formula of kernel prelithiation material is
(LisM1t)(CuxM2y)(OaM3b), x+y=1, a+b=2；1 < s≤2,0≤t≤1,0.5≤x≤1,0≤y≤0.5；0≤b
≤2；0 < t+y+b.M1 is the first metallic element, one or more mixing including alkali metal element, alkali earth metal；It is excellent
Choosing, M1 can specifically include aluminium, magnesium, sodium, potassium, calcium, nickel, caesium, rubidium it is one or more；M2 is the second metallic element, including
One or more mixing of alkali earth metal, transition metal element；Preferably, M2 can specifically include aluminium, titanium, iron, vanadium,
Tungsten, niobium, tantalum, zirconium, lanthanum, manganese, magnesium, calcium, cobalt, nickel, zinc, barium it is one or more；M3 is the one or more mixed of F, S, N, Br, Cl
It closes.
Prelithiation material of the invention can also be combined by above-mentioned kernel prelithiation material and covering material；Wherein,
Covering material may include oxide material, phosphate material, semiconductor material, one or more groups of fast ion conducting material
It closes；Oxide material include aluminium oxide, titanium oxide, magnesia, iron oxide, zinc oxide, niobium oxide, tantalum oxide, manganese oxide one
Kind or multiple combinations；Phosphate material includes one or more combinations of aluminum phosphate, lithium phosphate, titanium phosphate, magnesium phosphate；Fast ion
Conductor material includes Garnet-type solid electrolyte material, NASCION type solid electrolyte material, LISCION solid electrolyte
Any one of material, Ca-Ti ore type solid electrolyte material and its derived material；Semiconductor material includes Si, InAs, AlSb
One of or multiple combinations.
Covering material is uniformly or non-uniformly coated on the surface of kernel prelithiation material；Covering material and kernel prelithiation
The mass ratio of material is between 1:1000-1:1, preferably between 1:1000-1:20.
Prelithiation material granule character of the invention is one or more, the granularity of round, oval, sheet or polygon
For 10nm-50um.
The de- lithium capacity of prelithiation material is 200mAh/g-1000mAh/g, and taking off lithium voltage is 1-6V, in air property
Stablize.
Prelithiation material of the invention is applied in battery, reacts, is melted into as (Li in first all charge and discharges’M1t’)
(Cux’M2y’)(Oa’M3b’), wherein 0≤s '≤1,0≤t '≤1,0≤x '≤1,0≤y '≤1,0≤b '≤1,1≤a ' < 2, and
And s ', t ', x ', y ' it is not simultaneously zero.
The preparation method of prelithiation material of the present invention is described below.
In one case, the preparation method of prelithiation material as shown in Figure 1, can be prepared in accordance with the following steps:
Step 110, it by the raw material of prelithiation material, is put into mixing apparatus according to stoichiometric ratio and is uniformly mixed
It closes, obtains mixture；
Wherein, the raw material of lithiated materials include the respective oxide of several elements of Li, Cu, M1, M2, M3, hydroxide,
Carbonate, phosphate, ammonium salt, organic salt and metallic compound；Wherein M1, M2, M3 are as described above.
Mixing apparatus includes double movement mixers, three-dimensional mixer, V-Mixer, single cone double worm mixer, slot type spiral shell
Band one of mixing machine and horizontal Agravicmixer.
Step 120, mixture is put into agglomerating plant and is sintered, sintering temperature obtains between 300 DEG C -1050 DEG C
To semi-finished product material；
Sintering refer under air atmosphere, vacuum atmosphere, nitrogen atmosphere, argon atmosphere, argon nitrogen atmosphere or oxygen atmosphere into
Row sintering；Agglomerating plant includes one of batch-type furnace, tube furnace, roller-way cellar and rotary furnace.
Step 130, semi-finished product material is put into crushing plant and carries out primary breakup；
Crushing plant includes jaw crusher, gyratory crusher, impact breaker, hammer mill and kibbler roll
One of.
Step 140, the semifinished material investment disintegrating apparatus after primary breakup is crushed, obtains prelithiation material.
Disintegrating apparatus includes flat air flow crusher, fluidized bed airflow pulverizer, circulating airslide disintegrating mill, shock
In formula crusher, expansion type crusher, ball mill pulverizer, high speed rotation throwing type pulverizer and high speed rotation impacting type pulverizer
One kind.
The general formula of prelithiation material main component obtained is (LisM1t)(CuxM2y)(OaM3b).Each component is limited as before
It states described.
In another case, the preparation method of prelithiation material as shown in Figure 1, can be prepared into accordance with the following steps
It arrives:
Step 210, it by the raw material of prelithiation material, is put into mixing apparatus according to stoichiometric ratio and is uniformly mixed
It closes, obtains mixture；
Step 220, mixture is put into agglomerating plant and is sintered, sintering temperature obtains between 300 DEG C -1050 DEG C
To semi-finished product material；
Step 230, semi-finished product material is put into crushing plant and carries out primary breakup；
Step 240, the semifinished material investment disintegrating apparatus after primary breakup is crushed, obtains kernel prelithiation material
Material；
The general formula of kernel prelithiation material is (LisM1t)(CuxM2y)(OaM3b), component is as described above.
Step 250, kernel prelithiation material and covering material are put into mixing apparatus or merged according to required ratio and set
It is mixed in standby, to carry out cladding processing to kernel prelithiation material, obtains primary prelithiation material；
Step 260, primary prelithiation material is put into agglomerating plant and is sintered, sintering temperature is at 200 DEG C -900 DEG C
Between, obtain prelithiation material.
Above-mentioned preparation method is simple, abundant raw materials low to environmental requirement, is suitable for large-scale production.
Embodiment 1
Present embodiments provide a kind of prelithiation material Li1.75(Cu0.95Nb0.05)O2.Its preparation process is according to corresponding
Stoichiometric ratio weighs the oxidation niobium material that granularity is the lithium carbonate of 1um, the copper oxide of 500nm, 500nm.By three kinds of raw material
It is placed in the mixing of V cone screw mixer high speed, revolving speed 400rpm, incorporation time is 1 hour.Mixture is taken out, is placed
It is sintered in atmosphere batch-type furnace.Be passed through nitrogen atmosphere, the specific procedure of sintering are as follows: room temperature to 800 DEG C, 5 DEG C of heating rate/
Min keeps the temperature 5 hours, Temperature fall.Semi-finished product after sintering are crushed using jaw crusher, using air-flow crushing
Machine is crushed, and prelithiation material is obtained.Its SEM figure is as shown in figure 3, XRD spectrum is as shown in Figure 4.Fig. 5 is prepared by the present embodiment
Prelithiation material carry out half-cell electrochemical property test, its specific capacity of test result be 300mAh/g.
Embodiment 2
Present embodiments provide a kind of prelithiation material Li for coating fast ion conducting material titanium phosphate aluminium lithium (LATP)1.75
(Cu0.95Nb0.05)O2.Kernel prelithiation material is according to prepared by embodiment 1.By 100nm fast ion conducting material LATP and pre- lithium
Change material Li1.75(Cu0.95Nb0.05)O2High speed fusion machine is put into according to 1:100 ratio, after 2000rpm, is melted within 15 minutes
It closes.In air atmosphere by primary prelithiation material, 400 DEG C of sintering, finally obtain target prelithiation material.The X-ray of material
Diffraction (XRD) figure is as shown in Figure 2.The half-cell electrochemical property test that prelithiation material prepared by the present embodiment carries out is surveyed
Its specific capacity of test result is 340mAh/g.
Embodiment 3
Present embodiments provide a kind of prelithiation material Li1.9CuO1.9F0.1.Its preparation process is according to corresponding chemistry meter
It measures than weighing granularity as the lithium carbonate of 1um, the fluorination lithium material of the copper oxide 1um of 500nm.Four kinds of raw material are placed in V cone
The mixing of shape mixing screw high speed, revolving speed 400rpm, incorporation time are 1 hour.Mixture is taken out, it is box to be placed in atmosphere
It is sintered in furnace.It is passed through argon atmosphere, the specific procedure of sintering are as follows: room temperature is to 950 DEG C, 5 DEG C/min of heating rate, heat preservation 48
Hour, Temperature fall.Semi-finished product after sintering are crushed using jaw crusher, carry out powder using airslide disintegrating mill
It is broken, obtain prelithiation material.The half-cell electrochemical property test that prelithiation material prepared by the present embodiment carries out, test knot
Its specific capacity of fruit is 695mAh/g.
Embodiment 4
Present embodiments provide a kind of prelithiation material Li of coated aluminum oxide material1.9CuO1.9F0.1.Kernel prelithiation material
Expect Li1.9CuO1.9F0.1It is prepared according to embodiment 3.By 10nm alumina material and prelithiation material Li1.9CuO1.9F0.1According to 1:
100 ratios are put into high speed fusion machine, after 2000 turns, are merged within 15 minutes.In air atmosphere by primary prelithiation material,
400 DEG C of sintering, finally obtain prelithiation material.The half-cell chemical property that prelithiation material prepared by the present embodiment carries out
Test, its specific capacity of test result are 704mAh/g.
Embodiment 5
Present embodiments provide a kind of prelithiation material Li1.9Cu0.9Al0.1O1.8S0.2.Its preparation process is according to corresponding
Stoichiometric ratio weighs the lithium sulfide that granularity is the lithium carbonate of 1um, the copper oxide of 500nm, the alumina material of 10nm, 500nm
Material.Four kinds of raw material are placed in V cone screw mixer high speed to mix, revolving speed 400rpm, incorporation time is 1 small
When.Mixture is taken out, is placed in atmosphere batch-type furnace and is sintered.It is passed through argon atmosphere, the specific procedure of sintering are as follows: room temperature arrives
850 DEG C, 5 DEG C/min of heating rate, 28 hours are kept the temperature, Temperature fall.Semi-finished product utilize jaw crusher to carry out after being sintered
It is broken, it is crushed using airslide disintegrating mill, obtains prelithiation material.What prelithiation material prepared by the present embodiment carried out
Half-cell electrochemical property test, its specific capacity of test result are 353mAh/g.
Embodiment 6
Present embodiments provide a kind of prelithiation material Li1.95Na0.05CuO1.95CL0.05.Its preparation process is according to corresponding
Stoichiometric ratio weigh granularity be the lithium carbonate of 1um, the copper oxide of 500nm, 1um sodium chloride.Three kinds of raw material are placed
It is mixed in V cone screw mixer high speed, revolving speed 400rpm, incorporation time is 1 hour.Mixture is taken out, gas is placed in
It is sintered in atmosphere batch-type furnace.Be passed through nitrogen atmosphere, the specific procedure of sintering are as follows: room temperature to 900 DEG C, 5 DEG C/min of heating rate,
Heat preservation 48 hours, Temperature fall.Semi-finished product after sintering are crushed using jaw crusher, using airslide disintegrating mill into
Row crushes, and obtains prelithiation material.The half-cell electrochemical property test that prelithiation material prepared by the present embodiment carries out is surveyed
Its specific capacity of test result is 250mAh/g.
Prelithiation material provided by the invention can greatly improve the capacity of lithium battery, and preparation method is simple, right
Environmental requirement is low, ambient-temp-stable, abundant raw materials, is suitable for large-scale production.It is applied in lithium battery, can is hand
The various device power supplies such as machine, tablet computer, digital camera, power battery pack, electric vehicle.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of prelithiation material, which is characterized in that the prelithiation material includes at least kernel prelithiation material；
Wherein, the general formula of the kernel prelithiation material is (LisM1t)(CuxM2y)(OaM3b), x+y=1, a+b=2；1 < s≤
2,0≤t≤1,0.5≤x≤1,0≤y≤0.5；0≤b≤2；0 < t+y+b；Wherein M1 is the first metallic element, including alkali gold
Belong to one or more mixing of element, alkali earth metal；M2 is the second metallic element, including alkali earth metal, transition gold
Belong to one or more mixing of element；M3 is one or more mixing of F, S, N, Br, Cl.
2. prelithiation material according to claim 1, which is characterized in that the prelithiation material is by the kernel prelithiation
Material and covering material are combined；
The covering material be oxide material, phosphate material, semiconductor material, fast ion conducting material it is one or more
Combination；
The oxide material includes: aluminium oxide, titanium oxide, magnesia, iron oxide, zinc oxide, niobium oxide, tantalum oxide, oxidation
One or more combinations of manganese；
The phosphate material includes: one or more combinations of aluminum phosphate, lithium phosphate, titanium phosphate, magnesium phosphate；
The fast ion conducting material include: Garnet-type solid electrolyte material, NASCION type solid electrolyte material,
One of LISCION solid electrolyte material, Ca-Ti ore type solid electrolyte material and its derived material；
The semiconductor material includes: one of Si, InAs, AlSb or multiple combinations；
The covering material is uniformly or non-uniformly coated on the surface of the kernel prelithiation material；The covering material and institute
The mass ratio of kernel prelithiation material is stated between 1:1000-1:1.
3. prelithiation material according to claim 2, which is characterized in that the covering material and the kernel prelithiation material
The mass ratio of material is between 1:1000-1:20.
4. prelithiation material according to claim 1, which is characterized in that the M1 specifically include aluminium, magnesium, sodium, potassium, calcium,
Nickel, caesium, rubidium it is one or more；The M2 specifically include aluminium, titanium, iron, vanadium, tungsten, niobium, tantalum, zirconium, lanthanum, manganese, magnesium, calcium, cobalt, nickel,
Zinc, barium it is one or more.
5. prelithiation material according to claim 1, which is characterized in that the granularity of the prelithiation material is 10nm-
50um, particle proterties are the one or more of circle, ellipse, sheet or polygon；The de- lithium capacity of the prelithiation material
For 200mAh/g-1000mAh/g, taking off lithium voltage is 1-6V.
6. prelithiation material according to claim 1, which is characterized in that
The prelithiation material is applied in battery, reacts, is melted into as (Li in first all charge and discharges’M1t’)(Cux’M2y’)
(Oa’M3b’), wherein 0≤s '≤1,0≤t '≤1,0≤x '≤1,0≤y '≤1,0≤b '≤1,1≤a ' < 2, and s ', t ',
X ', y ' it is not simultaneously zero.
7. a kind of preparation method of prelithiation material, which is characterized in that the preparation method includes:
By the raw material of prelithiation material, it is put into mixing apparatus according to stoichiometric ratio and is uniformly mixed, obtain mixture；
Wherein, the raw material of the prelithiation material include the respective oxide of several elements of Li, Cu, M1, M2, M3, hydroxide, carbon
Hydrochlorate, phosphate, ammonium salt, organic salt and metallic compound；Wherein M1 is the first metallic element, including alkali metal element, alkali
One or more mixing of earth metal element；M2 be the second metallic element, including alkali earth metal, transition metal element one
Kind or a variety of mixing；M3 is one or more mixing of F, S, N, Br, Cl；
The mixture is put into agglomerating plant and is sintered, sintering temperature obtains semi-finished product between 300 DEG C -1050 DEG C
Material；
The semi-finished product material is put into crushing plant and carries out primary breakup；
Semifinished material investment disintegrating apparatus after the primary breakup is crushed, the prelithiation material is obtained.
8. preparation method according to claim 7, which is characterized in that
The mixing apparatus includes: double movement mixers, three-dimensional mixer, V-Mixer, single cone double worm mixer, slot type
One of spiral ribbon mixer and horizontal Agravicmixer；
The agglomerating plant includes: one of batch-type furnace, tube furnace, roller-way cellar and rotary furnace；
The crushing plant includes: jaw crusher, gyratory crusher, impact breaker, hammer mill and roll crushing
One of machine；
The disintegrating apparatus includes: flat air flow crusher, fluidized bed airflow pulverizer, circulating airslide disintegrating mill, hits
Impact crusher, expansion type crusher, ball mill pulverizer, high speed rotation throwing type pulverizer and high speed rotation impacting type pulverizer
One of；
The sintering specifically includes: in air atmosphere, vacuum atmosphere, nitrogen atmosphere, argon atmosphere, argon nitrogen atmosphere or oxygen atmosphere
Under be sintered.
9. the preparation method of prelithiation material according to claim 7, which is characterized in that by half after the primary breakup
Finished-product material investment disintegrating apparatus is crushed, and is obtained the prelithiation material and is specifically included:
Semifinished material investment disintegrating apparatus after the primary breakup is crushed, kernel prelithiation material is obtained；
The kernel prelithiation material and covering material are put into mixing apparatus or fusion device according to required ratio and carried out
Mixing, to carry out cladding processing to the kernel prelithiation material, obtains primary prelithiation material；
Primary prelithiation material is put into agglomerating plant and is sintered, sintering temperature obtains described between 200 DEG C -900 DEG C
Prelithiation material.
10. a kind of lithium battery including any prelithiation material of the claims 1-6.
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