CN106549148B - A kind of spinel lithium manganate of high-temperature stable-foamed aluminium electrode material and preparation method - Google Patents
A kind of spinel lithium manganate of high-temperature stable-foamed aluminium electrode material and preparation method Download PDFInfo
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Abstract
The present invention provides a kind of the spinel lithium manganate foamed aluminium electrode material and preparation method of high-temperature stable, three-dimensional conductive skeleton using foamed aluminium as electrode material, surface modification treatment first is carried out to foamed aluminium, foam aluminium surface is set to form inorganic organic surface enhanced interface, then the starch solution in lithium ion source and manganese ion source is added in foamed aluminium dispersion liquid and is stirred evenly, so that lithium ion and manganese ion uniformly penetrate into foam aluminum pore, then through oversintering, spinel lithium manganate foamed aluminium electrode material is obtained.Scheme provided by the invention efficiently solves contact problem of non-uniform of the LiMn2O4 with foamed aluminium in the prior art, the LiMn2O4 spinel lithium manganate foamed aluminium electrode material realized is more uniformly distributed, the high-temperature storage of current lithium battery and the technique effect of cyclical stability is substantially improved in stable quality.Further scheme cleaning provided by the invention, environmental protection, low raw-material cost, safety, convenient for large-scale production.
Description
Technical field
The present invention relates to be a kind of lithium ion battery electrode material preparation field, and in particular to a kind of point of high-temperature stable is brilliant
Stone LiMn2O4-foamed aluminium electrode material and preparation method.
Background technology
LiMn2O4 is mainly spinel structure, it is a kind of typical ionic crystals, has Fd3m symmetry.As one kind
Novel anode material for lithium-ion batteries, has many advantages, and promoter manganese is abundant, low in raw material price, without heavy metal, to ring
Border less pollution.Spinel structure LiMn2O4 price is low, current potential is high, security performance is high, is the following up-and-coming environment-friendly battery
Positive electrode is increasingly becoming the research hot topic of anode material for lithium-ion batteries in recent years.LiMn2O4 has three-dimensional removal lithium embedded tunnel,
Thus high current charge-discharge can be carried out, make its power vehicle application advantage clearly.But prepared by its material itself
It is of high cost, not too much stablize, be easy to decompose and generate gas, therefore be chiefly used in being used in mixed way with other materials, with reduce battery core at
This, cycle life decaying is very fast.Moreover, the stabilization of lattice structure of LiMn2O4 during lithium ion battery charge and discharge cycles
Property and invertibity are poor, it may occur that serious deformation.Cause the capacity attenuation of lithium ion battery serious, high-temperature storage and cycle are held
Amount decaying is even more serious so that the cycle performance of lithium ion battery is poor.It is easy to happen bulging, high-temperature behavior is poor, service life phase
To short.
The problem of high temperature capacity attenuation to improve the lithium manganate material of spinel structure is fast and poor circulation, both at home and abroad
Researcher carries out a large amount of study on the modification to spinel-type positive electrode, and main method of modifying has improvement in synthesis, mixes
Miscellaneous modification and surface modification.It is existing at present to improve the electric conductivity of the electrode by adding foam metal material, to reduce electricity
Resistance on extremely reduces the thermal losses on electrode, increases cycle life.Foam metal material is a kind of electrode bone of three-dimensional conductive
Frame material, porosity reach as high as 98%.Excellent conductive that foam metal has, thermal conductivity, and ductility is good, is suitable for electricity
The electrode base material in pond has more apparent advantage, therefore is just paid attention to by industry.Foam metal making on the electrode
With changing the discharge mechanism of lithium ion battery to a certain extent, improve battery whole system comprehensive electrochemical properties.
Chinese invention patent application number 201310738262.3 discloses a kind of anode electrode preparation work of lithium secondary battery
Skill.The technique includes：Mixed powder, gluing, stirring, conducting matrix grain roll-in, shove, scrape slurry, drying, again roll-in with cut process,
The lithium secondary battery that electrode is dressed up is made using three-dimensional conductive skeleton, internal resistance is low, and battery capacity increases, and service life extends,
Excellent electrochemical performance；The process efficiency of the invention is high and is suitable for large-scale production.However, the invention is only by three-dimensional conductive
Framework material and anode sizing agent mechanical mixture, the insufficient contact current transfer that will influence cell positive material between the two.
Chinese invention patent application number 201510117274.3 discloses a kind of three-diemsnional electrode pole based on aqueous binders
Piece and preparation method thereof.The invention mixes up slurry coating according to a certain percentage with aqueous binders, conductive agent and active material
In in three-dimensional porous metal collector, by drying, rolling, slice or further the operation preparations such as carbonization go out lithium ion battery use
Three-diemsnional electrode pole piece.It is cheap that the invention uses water-soluble organic macromolecule material to have as binder, derives from a wealth of sources,
The advantages such as environmental-friendly, and three-dimensional structure is conducive to the infiltration of electrolyte, improves interface phase of the electrolyte with active material
Capacitive effectively improves the discharge-rate characteristic of battery.However, lithium active material is unevenly distributed in the scheme of the invention, battery
Yields it is low.
Chinese invention patent application number 201110281201.X discloses a kind of lithium using foam metal as collector
The preparation method of ion battery pole piece.This method uses slurry cast or solves traditional coating work in the method for powder compacting
Skill is coated with the problem of spillage material on foam current collector surface, and obtains the lithium ion with high-energy density and good electrical properties
Battery.Since foam current collector has big porosity, can be existed to greatly reduce collector with filling paste in hole
Space shared by inside battery, and the number of plies of battery can be efficiently reduced so that the energy density of battery significantly improves.So
And the scheme of the invention and tradition machinery mixing LiMn2O4 could not be overcome to be contacted with foamed aluminium uneven, electron mobility is low to ask
Topic.
According to above-mentioned, at present the synthesis technology of LiMn2O4-foamed aluminium electrode material based on traditional mechanical agitation technique,
This method is although of low cost, but particle size is inhomogenous, and contact is uneven, low with the contact area of active lithium source, electricity
Transporting for son is obstructed, properties of product difference big disadvantage relatively difficult to the control of product quality.If foamed aluminium can be used
Frame, while using the method fabricated in situ activity lithium source of chemical reaction, then by very easy solution foamed aluminium and LiMn2O4
Contact problems, and be easily achieved large-scale industrial production, will greatly simplify technological process, raw materials for production cost reduction,
It is safe, clean environment firendly.
Invention content
For current LiMn2O4-foamed aluminium electrode material synthesis technology based on traditional mechanical agitation technique, it is this
Method is although of low cost, but particle size is inhomogenous, contacts uneven, electric conductivity low with the contact area of active lithium source
Difference is easily reunited, is caused and the skimble-scamble problem of grain size of the foamed aluminium after compound.The present invention provides a kind of spinelle of high-temperature stable
LiMn2O4-foamed aluminium electrode material and preparation method, the three-dimensional conductive skeleton using foamed aluminium as electrode material, first to foam
Aluminium carries out surface modification treatment, and foam aluminium surface is made to form inorganic-organic surface enhanced interface, then by lithium ion source and manganese from
The starch solution of component is added in foamed aluminium dispersion liquid and stirs evenly so that lithium ion and manganese ion uniformly penetrate into foamed aluminium
In hole, then through oversintering, spinel lithium manganate-foamed aluminium electrode material is obtained.Present invention employs foam aluminium powders to promote
The pattern of the formation of electrode material spherical shape, electrode material has obtained good control, and the material obtained has porous channel
Structure is conducive to the transmission conducting of lithium ion, especially improves high temperature circulation stability, effectively prevent the deformation of electrode, and
And the network that foam aluminium powder is conductive, compared with traditional adulterated al, this method is solved using synthetic technology in situ
Contact problem of non-uniform of the LiMn2O4 with foamed aluminium, obtained LiMn2O4 spinel lithium manganate-foamed aluminium electrode material are more equal
Even, the high-temperature storage and cyclical stability of current lithium battery is substantially improved in stable quality.Production method cleaning, environmental protection, raw material
Of low cost, safety, convenient for large-scale production.
The present invention provides a kind of spinel lithium manganate of high-temperature stable-foamed aluminium electrode material and preparation method, using bubble
Three-dimensional conductive skeleton of the foam aluminium as electrode material, includes the following steps：
（1）The foamed aluminium of 45-48.5 mass parts, 45-50 mass parts solvent are mixed with the coupling agent of 1.5-5 mass parts,
Mechanical agitation uniformly stands 1 ~ 5 hour afterwards, makes the coupling agent modified foam aluminium surface, then 0-0.5 mass parts are added thereto
Dispersant, foamed aluminium can be uniformly dispersed in a solvent, and the surface for being configured to dispersion is modified foam aluminum slurry；
（2）By 15-30 mass parts lithium ion source, the mass parts manganese ion sources 15-30 and 40-70 mass parts starch deionized waters
Solution mixes, and is configured to lithium manganese-starch size, mechanical agitation is uniform, so that the lithium and manganese ion is uniformly mixed with starch, obtains
Lithium manganese ion starch solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze, lithium ion and manganese ion is made to be attached to the surface of foamed aluminium, obtains lithium manganese composite foam aluminum slurry, the surface
The mass ratio of modified foam aluminum slurry and the lithium manganese ion starch solution is 1:0.5-2.5；
（4）The lithium manganese composite foam aluminum slurry is dried and is decomposed, lithium manganese composite foam aluminium powder is forged using vacuum
It burns, obtains spinel lithium manganate-foamed aluminium electrode material.
Preferably, the foamed aluminium is spherical foam aluminium, its porosity is not less than 60%, the average grain of the foamed aluminium
Diameter is less than 2 millimeters.
Preferably, which is characterized in that the solvent is N-Methyl pyrrolidone, acetone, oxalic acid or ethyl alcohol.
Preferably, which is characterized in that the coupling agent solution is vinyltriethoxysilane, titanate esters, silane coupled
At least one of agent.A concentration of 0.5 ~ 2.5mol/L of coupling agent.
Preferably, which is characterized in that the dispersant be dodecyl sodium sulfate, neopelex at least one
Kind.
Preferably, which is characterized in that the lithium ion source be lithium chloride, lithium nitrate, lithium sulfate, lithium nickelate, lithium carbonate or
At least one of lithium hydroxide；The manganese ion source is selected from manganese oxalate, manganese nitrate, manganese acetate, manganese sulfate, manganese chloride, Gao Meng
At least one of sour potassium, potassium manganate.
Preferably, which is characterized in that the setting temperature of the continuous screw extruder is 60-70 DEG C, and starch is made to stir
During be gelatinized, be uniformly adhered to foam aluminium surface, the method that the lithium manganese composite foam aluminum slurry drying is decomposed is：It grinds
The dry decomposition of mill, spray drying are decomposed, high-temperature vacuum dries any of which.
Preferably, the calcination temperature of the vacuum calcining is 700-760 DEG C, and heating rate is 10-30 DEG C/h, calcination time
For 1-2h.
A kind of test of the spinel lithium manganate of high-temperature stable-foamed aluminium electrode material prepared by the present invention is as shown in table 1.
Table 1：
| Performance indicator | Specific capacity（mAh/g） | Conductivity（S/cm） | Cycle-index（It is secondary） |
| The present invention | 258 | 2.4×10-3 | 2500 |
| Tradition machinery composite algorithm | 210 | 5.2×10-2 | 1500 |
A kind of spinel lithium manganate of high-temperature stable-foamed aluminium electrode material and preparation method, compared with prior art,
Prominent feature and excellent effect are：
1, the present invention first carries out surface modification treatment to foamed aluminium, and foam aluminium surface is made to form inorganic-organic surface enhanced
Interface, it is easy to accomplish foamed aluminium and organic matter it is compound, after forming chemical bond, electron-transport will be promoted.
2, lithium ion and manganese ion are fixed on foam aluminium surface by the present invention using starch solution, and cost of material is low, cleaning,
Environmental protection.
3, the present invention is synthesized lithium ion source and manganese ion source in foam aluminium surface using chemical synthesising technology in situ,
It is non-uniform to solve the problems, such as that foamed aluminium is contacted with LiMn2O4, product quality is more stable.
4, the present invention is easy to operate, is suitable for related personnel's operation, is trained by correlation, it is easy to grasp.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）By the spherical foam aluminium of 45 mass parts, the porosity of the foam aluminum feedstock is 60%, average grain diameter is 1.8 millis
Rice, 50 mass parts N-Methyl pyrrolidones are mixed with the vinyltriethoxysilane of a concentration of 0.5mol/L of 5 mass parts, machinery
1 hour is stood after stirring evenly, makes the coupling agent modified foam aluminium surface, then the dodecane of 0.5 mass parts is added thereto
Base sodium sulfonate, enables foamed aluminium to be uniformly dispersed in a solvent, and the surface for being configured to dispersion is modified foam aluminum slurry；
（2）15 mass parts lithium chlorides, 15 mass parts manganese oxalates and 70 mass parts starch deionized water solutions are mixed, are prepared
Cheng Li, manganese-starch size, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch, obtains lithium, manganese ion forms sediment
Powder solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze and be gelatinized, the setting temperature of continuous screw extruder is 60 DEG C, so that starch is gelatinized during stirring, by lithium
Ion and manganese ion are attached to the surface of foamed aluminium, obtain lithium, manganese composite foam aluminum slurry, and the surface is modified foam aluminum slurry
Mass ratio with the lithium manganese ion starch solution is 1:0.5；
（4）The lithium manganese composite foam aluminum slurry mill-drying is decomposed, lithium, manganese composite foam aluminium powder, using true
The calcination temperature of sky calcining, vacuum calcining is 700 DEG C, and heating rate is 10 DEG C/h, and calcination time is that 1h obtains spinelle mangaic acid
Lithium-foamed aluminium electrode material.
Spinel lithium manganate-foamed aluminium the electrode material prepared in embodiment 1 is tested, test result such as 2 institute of table
Show.
Embodiment 2
（1）By the spherical foam aluminium of 46 mass parts, the porosity of the foam aluminum feedstock is 65%, average grain diameter is 1 milli
Rice, 49 mass parts acetone are mixed with the titanate esters of a concentration of 1mol/L of 5 mass parts, and mechanical agitation uniformly stands 1.5 hours afterwards, makes
The coupling agent modified foam aluminium surface, then the dodecyl sodium sulfate of 0.5 mass parts is added thereto, so that foamed aluminium is existed
It is uniformly dispersed in solvent, the surface for being configured to dispersion is modified foam aluminum slurry；
（2）By the mixture of 20 mass parts lithium chlorides and lithium nitrate, 15 mass parts manganese nitrates and 65 mass parts starch go from
Sub- aqueous solution mixing, is configured to lithium, manganese-starch size, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch
It closes, obtains lithium, manganese ion starch solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze, the setting temperature of continuous screw extruder is 60 DEG C, and starch is made to be gelatinized during stirring, by lithium ion and
Manganese ion is attached to the surface of foamed aluminium, obtains lithium, manganese composite foam aluminum slurry, the surface be modified foam aluminum slurry with it is described
The mass ratio of lithium manganese ion starch solution is 1:1；
（4）The lithium manganese composite foam aluminum slurry mill-drying is decomposed, lithium, manganese composite foam aluminium powder, using true
The calcination temperature of sky calcining, vacuum calcining is 710 DEG C, and heating rate is 15 DEG C/h, and calcination time is that 1h obtains spinelle mangaic acid
Lithium-foamed aluminium electrode material.
Spinel lithium manganate-foamed aluminium the electrode material prepared in embodiment 2 is tested, test result such as 2 institute of table
Show.
Embodiment 3
（1）By the spherical foam aluminium of 48.5 mass parts, the porosity of the foam aluminum feedstock is 75%, average grain diameter is 1 milli
Rice, 50 mass parts oxalic acid are mixed with the silane coupling agent of a concentration of 0.5mol/L of 1.5 mass parts, and mechanical agitation uniformly stands 1 afterwards
Hour, make the coupling agent modified foam aluminium surface, then the neopelex of 0.2 mass parts is added thereto, makes bubble
Foam aluminium can be uniformly dispersed in a solvent, and the surface for being configured to dispersion is modified foam aluminum slurry；
（2）30 mass parts lithium chlorides, 30 mass parts manganese oxalates and 40 mass parts starch deionized water solutions are mixed, are prepared
Cheng Li, manganese-starch size, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch, obtains lithium, manganese ion forms sediment
Powder solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze, the setting temperature of continuous screw extruder is 60 DEG C, and starch is made to be gelatinized during stirring, by lithium ion and
Manganese ion is attached to the surface of foamed aluminium, obtains lithium, manganese composite foam aluminum slurry, the surface be modified foam aluminum slurry with it is described
The mass ratio of lithium manganese ion starch solution is 1:0.5；
（4）The lithium manganese composite foam aluminum slurry mill-drying is decomposed, lithium, manganese composite foam aluminium powder, using true
The calcination temperature of sky calcining, vacuum calcining is 750 DEG C, and heating rate is 30 DEG C/h, and calcination time is that 2h obtains spinelle mangaic acid
Lithium-foamed aluminium electrode material.
Spinel lithium manganate-foamed aluminium the electrode material prepared in embodiment 3 is tested, test result such as 2 institute of table
Show.
Embodiment 4
（1）By the spherical foam aluminium of 48 mass parts, the porosity of the foam aluminum feedstock is 85%, average grain diameter is 1.5 millis
Rice, 50 mass parts ethyl alcohol are mixed with the vinyltriethoxysilane of a concentration of 0.5mol/L of 5 mass parts, after mechanical agitation is uniform
5 hours are stood, makes the coupling agent modified foam aluminium surface, then the dodecyl sodium sulfate of 1 mass parts is added thereto, makes bubble
Foam aluminium can be uniformly dispersed in a solvent, and the surface for being configured to dispersion is modified foam aluminum slurry；
（2）By 15 mass parts lithium sulfates, the mixture of 15 mass parts manganese chlorides and manganese acetate and 70 mass parts starch go from
Sub- aqueous solution mixing, is configured to lithium, manganese-starch size, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch
It closes, obtains lithium, manganese ion starch solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze, the setting temperature of continuous screw extruder is 60 DEG C, and starch is made to be gelatinized during stirring, by lithium ion and
Manganese ion is attached to the surface of foamed aluminium, obtains lithium, manganese composite foam aluminum slurry, the surface be modified foam aluminum slurry with it is described
The mass ratio of lithium manganese ion starch solution is 1:0.5；
（4）The lithium manganese composite foam aluminum slurry mill-drying is decomposed, lithium, manganese composite foam aluminium powder, using true
The calcination temperature of sky calcining, vacuum calcining is 750 DEG C, and heating rate is 25 DEG C/h, and calcination time is that 1.5h obtains spinel manganese
Sour lithium-foamed aluminium electrode material.
Spinel lithium manganate-foamed aluminium the electrode material prepared in embodiment 4 is tested, test result such as 2 institute of table
Show.
Embodiment 5
（1）By the spherical foam aluminium of 45 mass parts, the porosity of the foam aluminum feedstock is 65%, average grain diameter is 1.5 millis
Rice, 50 mass parts N-Methyl pyrrolidones are mixed with the titanate esters of a concentration of 0.5mol/L of 5 mass parts, and mechanical agitation is uniformly rear quiet
It sets 3.5 hours, makes the coupling agent modified foam aluminium surface, then the neopelex of 0.5 mass parts is added thereto,
Foamed aluminium is set to be uniformly dispersed in a solvent, the surface for being configured to dispersion is modified foam aluminum slurry；
（2）25 mass parts lithium hydroxides, 25 mass parts potassium manganates and 50 mass parts starch deionized water solutions are mixed, are matched
Lithium, manganese-starch size is made, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch, obtains lithium, manganese ion
Starch solution；
（3）The surface is modified foam aluminum slurry and the lithium manganese ion starch solution mixes, continuous screw is poured into and squeezes
Go out in machine and squeeze, the setting temperature of continuous screw extruder is 60 DEG C, and starch is made to be gelatinized during stirring, by lithium ion and
Manganese ion is attached to the surface of foamed aluminium, obtains lithium, manganese composite foam aluminum slurry, the surface be modified foam aluminum slurry with it is described
The mass ratio of lithium manganese ion starch solution is 1:0.5；
（4）The lithium manganese composite foam aluminum slurry mill-drying is decomposed, lithium, manganese composite foam aluminium powder, using true
The calcination temperature of sky calcining, vacuum calcining is 730 DEG C, and heating rate is 15 DEG C/h, and calcination time is that 2h obtains spinelle mangaic acid
Lithium-foamed aluminium electrode material.
Spinel lithium manganate-foamed aluminium the electrode material prepared in embodiment 5 is tested, test result such as 2 institute of table
Show.
Table 2：
Claims (3)
1. a kind of preparation method of the spinel lithium manganate of high-temperature stable-foamed aluminium electrode material, which is characterized in that use foam
Three-dimensional conductive skeleton of the aluminium as electrode material, includes the following steps：
（1）The foamed aluminium of 45-48.5 mass parts, 45-50 mass parts solvent are mixed with the coupling agent of 1.5-5 mass parts, machinery
1-5 hours are stood after stirring evenly, makes the coupling agent modified foam aluminium surface, then point of 0-0.5 mass parts is added thereto
Powder, foamed aluminium can be uniformly dispersed in a solvent, and the surface for being configured to dispersion is modified foam aluminum slurry；The foamed aluminium is ball
Shape foamed aluminium, porosity are not less than 60%, and the average grain diameter of the foamed aluminium is less than 2 millimeters；The solvent is N- methyl pyrroles
One kind in pyrrolidone, acetone, ethyl alcohol；The coupling agent solution be titanate esters, any one of silane coupling agent or two kinds with
On combination, a concentration of 0.5-2.5mol/L of coupling agent；The dispersant is dodecyl sodium sulfate, detergent alkylate sulphur
Any one or two kinds of combinations of sour sodium；
（2）By 15-30 mass parts lithium ion source, the mass parts manganese ion sources 15-30 and 40-70 mass parts starch deionized water solutions
Mixing, be configured to lithium, manganese-starch size, mechanical agitation is uniform, and lithium ion and manganese ion is made uniformly to be mixed with starch, obtain lithium,
Manganese ion starch solution；
（3）The surface is modified foam aluminum slurry and the lithium, manganese ion starch solution mix, pours into continuous screw extruder
Middle extruding makes lithium ion and manganese ion be attached to the surface of foamed aluminium, obtains lithium manganese composite foam aluminum slurry, and the surface is modified
The mass ratio of foam aluminum slurry and the lithium manganese ion starch solution is 1:0.5-2.5；The setting of the continuous screw extruder
Temperature is 60-70 DEG C, so that starch is gelatinized during stirring, is uniformly adhered to foam aluminium surface；
（4）The lithium manganese composite foam aluminum slurry is dried and is decomposed, lithium manganese composite foam aluminium powder is obtained, wherein the lithium manganese is multiple
It is that mill-drying decomposes, spray drying is decomposed, arbitrary in high-temperature vacuum seasoning to close the method that the drying of foam aluminum slurry is decomposed
It is a kind of；Using vacuum calcining, spinel lithium manganate-foamed aluminium electrode material is obtained；The calcining temperature of the wherein described vacuum calcining
Degree is 700-760 DEG C, and heating rate is 10-30 DEG C/h, calcination time 1-2h.
2. a kind of preparation method of the spinel lithium manganate of high-temperature stable according to claim 1-foamed aluminium electrode material,
It is characterized in that, the lithium ion source be lithium chloride, lithium nitrate, lithium sulfate, lithium nickelate, lithium carbonate or lithium hydroxide at least
It is a kind of；The manganese ion source in manganese oxalate, manganese nitrate, manganese acetate, manganese sulfate, manganese chloride, potassium permanganate, potassium manganate extremely
Few one kind.
3. a kind of spinel lithium manganate of high-temperature stable-foamed aluminium electrode material, which is characterized in that the electrode material is by right
It is required that 1-2 any one of them methods are prepared.
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| CN113964297B (en) * | 2021-10-21 | 2024-04-09 | 中国石油天然气股份有限公司 | Porous silicon anode material of lithium ion battery and preparation method and application thereof |
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