CN110212200A - A kind of battery, compound cathode of lithium and preparation method thereof - Google Patents
A kind of battery, compound cathode of lithium and preparation method thereof Download PDFInfo
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- CN110212200A CN110212200A CN201910460032.2A CN201910460032A CN110212200A CN 110212200 A CN110212200 A CN 110212200A CN 201910460032 A CN201910460032 A CN 201910460032A CN 110212200 A CN110212200 A CN 110212200A
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention provides a kind of preparation methods of compound cathode of lithium, comprising the following steps: is dried after cleaning up nickel foam；The reaction solution for configuring cobalt nitrate and urea, obtains presoma；Nickel foam is put into reaction solution, coats presoma in nickel foam with solvent-thermal method；The nickel foam for being coated with presoma is taken out, is cleaned and dried；The nickel foam for being coated with presoma after calcining is dry, obtains conducting matrix grain；Lithium piece is put into glove box and is heated to molten condition；Conducting matrix grain and lithium piece are fused, obtain compound cathode of lithium, cobaltosic oxide can improve the close lithium and specific surface area of nickel foam, be conducive to faster melt and fill lithium, and the nickel foam for being coated with cobaltosic oxide nano piece can slow down the volume expansion of cathode of lithium as the frame material of lithium metal, and the local current densities for melting the compound cathode of lithium after filling lithium are smaller, can restrained effectively the growth of Li dendrite, so that the extended shelf life of battery, has good practicability.
Description
Technical field
The present invention relates to technical field of energy storage, and in particular to a kind of battery, compound cathode of lithium and preparation method thereof.
Background technique
Currently, the fast development of movable equipment, electric car and smart grid make high-energy density secondary battery by
To a large amount of concern and research, wherein lithium metal is considered as electrochemistry due to its height ratio capacity and low reduction potential
One of most promising negative electrode material of energy storage.But lithium anode reactivity is high, easily occurs with electrolyte secondary anti-
It answers；It is also easy to generate Li dendrite and dead lithium, Li dendrite is produced due to the non-uniform distribution of charges of electrode surface and volume expansion
Raw, once dendrite, which pierces through diaphragm, will lead to battery short circuit, causes a series of safety such as thermal runaway and battery catches fire explosion and ask
Topic；Dead lithium then will increase the internal resistance of cell and in-fighting, reduce battery energy density；It is unlimited to occur when lithium metal is as negative electrode material
Volume expansion, thus cause SEI film constantly to rupture and repair, lithium metal and electrolyte reacts, and consumes inside battery
Limited lithium source causes the coulombic efficiency of battery to reduce.
Summary of the invention
Technical problem to be solved by the present invention lies in overcome the deficiencies of the prior art and provide a kind of answering for no dendritic growth
Close cathode of lithium and preparation method thereof.
In order to achieve the above purpose, present invention employs the following technical solutions:
The embodiment provides a kind of preparation methods of compound cathode of lithium, comprising the following steps:
It is dried after nickel foam is cleaned up；
The reaction solution for configuring cobalt nitrate and urea, obtains presoma；
Nickel foam is put into reaction solution, coats presoma in nickel foam with solvent-thermal method；
The nickel foam for being coated with presoma is taken out, is cleaned and dried；
The nickel foam for being coated with presoma after calcining is dry, obtains conducting matrix grain, conducting matrix grain include foam nickel layer and
Cobaltosic oxide nano lamella, cobaltosic oxide nano lamella are coated on outside foam nickel layer；
Conducting matrix grain is put into glove box；
Lithium piece is put into glove box and is heated to molten condition；
Conducting matrix grain and lithium piece are fused, compound cathode of lithium is obtained.
Optionally, it is dried and specifically includes after nickel foam being cleaned up:
Nickel foam is successively immersed to acetone, ethyl alcohol, hydrochloric acid, is cleaned by ultrasonic in deionized water；
Nickel foam after cleaning is put into drying oven dry.
Optionally, the reaction solution for configuring cobalt nitrate and urea, obtains presoma and specifically includes:
Cobalt nitrate and urea are dissolved in the mixed solution of methanol and ethyl alcohol, obtain reaction solution；
Magnetic agitation reaction solution, obtains presoma.
Optionally, nickel foam is put into reaction solution, coats presoma in nickel foam with solvent-thermal method and specifically includes:
Nickel foam is put into reaction solution；
Reaction solution is put into reaction kettle；
Reaction kettle is put into 95 DEG C of baking ovens；
Reaction obtains the nickel foam for being coated with presoma.
Optionally, nickel foam is placed in reaction solution vertically.
Optionally, the nickel foam for being coated with presoma is taken out, cleaning-drying is carried out and specifically includes:
It is rinsed after the nickel foam for being coated with presoma is taken out with deionized water and ethyl alcohol；
The nickel foam for being coated with presoma rinsed is put into 60 DEG C of baking ovens dry.
Optionally, the nickel foam for being coated with presoma after calcining is dry specifically includes:
The nickel foam for being coated with presoma after drying is put into tube furnace；
The temperature of tube furnace is warming up to 350 DEG C with the heating rate of 2 DEG C/min；
Calcining is coated with the nickel foam 3h of presoma.
The embodiments of the present invention also provide a kind of compound cathode of lithium, pass through the preparation method system of above-mentioned compound cathode of lithium
, including above-mentioned conducting matrix grain.
The embodiments of the present invention also provide a kind of batteries, including above-mentioned compound cathode of lithium.
A kind of compound cathode of lithium provided by the invention and preparation method thereof, due to the external sheath that conducting matrix grain is nickel foam
Cobaltosic oxide nano piece, cobaltosic oxide nano piece can improve the close lithium and specific surface area of nickel foam, be conducive to more rapidly
Melting fill lithium, and the nickel foam for being coated with cobaltosic oxide nano piece can slow down cathode of lithium as the frame material of lithium metal
Volume expansion, and melt fill lithium after compound cathode of lithium local current densities it is smaller, lithium branch can be restrained effectively
Brilliant growth, so that the extended shelf life of battery, has good practicability.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the preparation method flow chart of compound cathode of lithium of the invention；
Fig. 2 is the microstructure schematic diagram of the conducting matrix grain in the embodiment of the present invention；
Fig. 3 is the microstructure schematic diagram of compound cathode of lithium of the invention；
Fig. 4 is the cycle performance schematic diagram of the battery in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1 is the preparation method flow chart of conducting matrix grain of the invention, as shown in Figure 1, the conducting matrix grain of the present embodiment
Preparation method, comprising the following steps:
S01, it is dried after cleaning up nickel foam；
In the step S01 of the present embodiment, the nickel foam (NF) of a slip gauge then is first chosen, then cleans up nickel foam
After be dried.Its process cleaned specifically includes: nickel foam successively being immersed to acetone, ethyl alcohol, hydrochloric acid, is carried out in deionized water
Ultrasonic cleaning, the time of ultrasonic cleaning are 15min；After the completion of ultrasonic cleaning, nickel foam is taken out from deionized water, is then put
Enter in drying oven and be dried, spare clean nickel foam lamella can be obtained after the completion of dry.
S02, the reaction solution for configuring cobalt nitrate and urea, obtain presoma；
In the step S02 of the present embodiment, need to prepare using the nickel foam after drying as substrate on the surface of nickel foam
Nanoscale twins, the material of nanoscale twins are cobaltosic oxide (Co3O4), therefore, it is necessary to the surfaces of present nickel foam to prepare nanometer
The presoma of lamella is the outer surface that presoma is coated on nickel foam, so that cobaltosic oxide nano lamella is obtained, it therefore, will
Nickel foam is as substrate, it is also necessary to prepare presoma.
Specifically, first weigh certain mol proportion by cobalt nitrate (Co (NO3) 26H2O) and urea, by cobalt nitrate and urine
Element mixing, is then dissolved in methanol and second for cobalt nitrate and urea with the methanol of certain volume ratio and the mixed solution of ethyl alcohol again
In the mixed solution of alcohol, reaction solution is obtained；Cobalt nitrate and urea are as the reactant for preparing cobaltosic oxide, in certain item
The outer surface that cobaltosic oxide is coated on nickel foam will be generated under part.After having prepared reaction solution, magnetic agitation reaction solution
Presoma can be obtained, mixing time can be determine according to actual needs.
S03, nickel foam is put into reaction solution, coats presoma in nickel foam with solvent-thermal method.
In the step S03 of the present embodiment, nickel foam and presoma all have been prepared for completing, and need for presoma to be coated on
The outer surface of nickel foam, at this time, it is only necessary to nickel foam is put into reaction solution, reaction solution is then transferred to reaction kettle
In, reaction kettle is put into baking oven, the temperature of baking oven is controlled at 95 DEG C, so that the reaction of cobalt nitrate and urea is more thorough, it is preceding
Driving body can be uniformly coated on the surface of nickel foam.
It is worth noting that, in order to make nickel foam two sides all be coated with presoma, nickel foam needs to be placed on reaction vertically
In solution, come into full contact with the two sides of nickel foam all with reaction solution.
S04, taking-up are coated with the nickel foam of presoma, are cleaned and dried.
In the step S04 of the present embodiment, the nickel foam for being coated with presoma needs further drying process, meanwhile,
It needs further to obtain cobaltosic oxide nano lamella by precursor preparation.Specifically, the bubble of presoma will be coated with first
Foam nickel is rinsed after taking out with deionized water and ethyl alcohol, by the methanol and ethyl alcohol and other influences cobaltosic oxide in reaction solution
The impurity of nanoscale twins degree of purity all cleans up, and washing time can be chosen according to actual needs, the packet that will then rinse
The nickel foam for being covered with presoma is put into drying in 60 DEG C of baking ovens, removes whole moisture.
The nickel foam for being coated with presoma after S05, calcining are dry, obtains conducting matrix grain.
In the step S05 of the present embodiment, the nickel foam for being coated with presoma after the completion of drying can be carried out at calcining
Reason, is forged specifically, the nickel foam for being coated with presoma after drying is placed in tube furnace and is warming up to 350 DEG C under air atmosphere
It burns, and keeps the temperature a period of time, presoma is thoroughly reacted with oxygen at high temperature, generate cobaltosic oxide nano piece packet
The outer surface of nickel foam, cobaltosic oxide nano piece and nickel foam bind lines are overlayed on into (four oxidations three of required conducting matrix grain
Cobalt-nickel foam, Co3O4-NF)。
Fig. 2 is the microstructure schematic diagram of conducting matrix grain of the invention, as shown in Fig. 2, conducting matrix grain includes foam nickel layer
With cobaltosic oxide nano lamella, nickel foam layer surface is coated with the cobaltosic oxide nano lamella of vertical-growth, and four oxygen
Changing three cobalt nanoscale twins is cavernous structure.
S06, conducting matrix grain is put into glove box；
In the step S06 of the present embodiment, first by the conducting matrix grain prepared (cobaltosic oxide-nickel foam, Co3O4-NF)
It is cut into sequin, the size of sequin can be determined according to the size of required battery to be prepared, the conductive bone that will then cut
Frame is transferred to water number and oxygen value is respectively less than in the glove box of 0.1ppm.
S07, it lithium piece is put into glove box is heated to molten condition；
In the step S07 of the present embodiment, lithium piece is put into glove box, is added lithium piece using the warm table in glove box
Heat is to 300~350 DEG C, and lithium piece is in molten condition at this time.
S08, conducting matrix grain and lithium piece are fused, obtains compound cathode of lithium.
In the step S08 of the present embodiment, the lithium metal under the conducting matrix grain prepared and molten condition is contacted, until
The lithium metal of molten condition infiltrates the conducting matrix grain entirely prepared, fuses the two, compound cathode of lithium (lithium-can be obtained
Cobaltosic oxide-nickel foam, Li-Co3O4- NF), impurity is less during melting fills lithium, and the pure of compound cathode of lithium can be improved
Degree.The cathode includes above-mentioned conducting matrix grain and the lithium metal that is melted in outside conducting matrix grain.
Meanwhile the compound cathode of lithium can be used for assembled battery, which includes above-mentioned compound cathode of lithium.
Embodiment 2
As the another embodiment of this specification, unlike the first embodiment, in the step S01 of the present embodiment, first
Choose the nickel foam (NF) of a slip gauge then, nickel foam with a thickness of 1mm, the size of nickel foam is 2.5 × 5cm.In the present embodiment
On the basis of, the size for the battery that can be assembled as needed in actual production chooses the thickness and size of nickel foam.
In the step S02 of the present embodiment, cobalt nitrate (Co (NO3)26H2O) and the molar ratio of urea be 1:2, methanol and
The volume ratio of ethyl alcohol is 1:1, and the time of magnetic agitation is 30min；It, can be according to need in actual production on the basis of the present embodiment
Select cobalt nitrate (Co (NO3)26H2O) and the molar ratio of urea, the volume ratio and magnetic agitation of methanol and ethyl alcohol when
Between.
In the step S03 of the present embodiment, when reaction in an oven a length of 12h.
In the step S05 of the present embodiment, the nickel foam for being coated with presoma after drying is placed in tube furnace in sky
Temperature with the heating rate of 2 DEG C/min is warming up to 350 DEG C of calcinings under enclosing by atmosphere, and keeps the temperature calcining 3 hours.
Embodiment 3
As the another embodiment of this specification, as different from Example 2, in the step S03 of the present embodiment,
A length of 8h when reaction in baking oven.
Embodiment 4
As the another embodiment of this specification, as different from Example 2, in the step S03 of the present embodiment,
A length of 16h when reaction in baking oven.
Embodiment 5
As the another embodiment of this specification, the present embodiment provides a kind of Symmetrical cells, and the battery is in glove box
It is completed, working electrode and all uses electrode compound cathode of lithium (lithium-cobaltosic oxide-nickel foam, Li-Co3O4- NF),
Battery diaphragm uses polyethylene and microporous polypropylene membrane, concrete model Celgard2400, and electrolyte uses 1mol hexafluorophosphoric acid
Lithium (LiPF6) be dissolved in the ethylene carbonate (EC) and dimethyl carbonate (DMC) electrolyte that volume ratio is 1:1.Battery preparation
After the completion, it is transferred out of glove box and standing 12h makes electrolyte sufficiently infiltrate electrode, then carried out on blue electric discharge and recharge instrument
Constant current charge-discharge test, setting current density are 3mA/cm2, setting charge/discharge capacity is 1mAh/cm2。
Fig. 3 is the microstructure schematic diagram of compound cathode of lithium of the invention, as shown in figure 3, compound cathode of lithium (- four oxygen of lithium
Change three cobalts-nickel foam, Li-Co3O4- NF) circulation 1000h after have no apparent dendritic growth.
Embodiment 6
As the another embodiment of this specification, unlike a upper embodiment, pair of the battery in the present embodiment
Electrode is LiFePO4 (LiFePO4), after the completion of battery preparation, it is transferred out of glove box and standing 12h keeps electrolyte abundant
Electrode is infiltrated, then carries out constant current charge-discharge test on blue electric discharge and recharge instrument together with the battery cathode of not conducting matrix grain,
The density that electric current is arranged is respectively 0.2C, 0.5C, 1C, 2C and 5C.
Fig. 4 is the cycle performance schematic diagram of the battery in the embodiment of the present invention, as shown in figure 4, by the present embodiment
Battery cathode and the lithium foil cathode for being not added with conducting matrix grain are assembled into battery and carry out circulating battery, and having time result is it is found that passing through
It crosses after certain circulating ring number, the battery in the present embodiment can still have the specific capacity of 75mAh/g under the current density of 5C,
There are also the specific capacities of 125mAh/g after 500 circle of circulation under the current density of 2C, also, under each different current density,
Specific capacity of the specific capacity of battery in the present embodiment all than the battery of not conducting matrix grain is high.
To sum up, the embodiment of the invention provides a kind of compound cathode of lithium and preparation method thereof, since conducting matrix grain is foam
The external sheath cobaltosic oxide nano piece of nickel, cobaltosic oxide nano piece can improve the close lithium and specific surface area of nickel foam,
Be conducive to faster melt and fill lithium, and is coated with frame material of the nickel foam as lithium metal of cobaltosic oxide nano piece
The volume expansion of cathode of lithium can be slowed down, and the local current densities for melting the compound cathode of lithium after filling lithium are smaller, it can be effective
Ground inhibits the growth of Li dendrite, so that the extended shelf life of battery, has good practicability.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
It should be pointed out that for those skilled in the art, under the premise of not departing from the application principle,
Several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the application.
Claims (9)
1. a kind of preparation method of compound cathode of lithium, which comprises the following steps:
It is dried after nickel foam is cleaned up；
The reaction solution for configuring cobalt nitrate and urea, obtains presoma；
The nickel foam is put into the reaction solution, coats the presoma in the nickel foam with solvent-thermal method；
The nickel foam for being coated with the presoma is taken out, is cleaned and dried；
The nickel foam for being coated with the presoma after calcining is dry, obtains conducting matrix grain, and the conducting matrix grain includes bubble
Foam nickel layer and cobaltosic oxide nano lamella, the cobaltosic oxide nano lamella are coated on outside the foam nickel layer；
The conducting matrix grain is put into glove box；
Lithium piece is put into glove box and is heated to molten condition；
The conducting matrix grain and the lithium piece are fused, the compound cathode of lithium is obtained.
2. the preparation method of compound cathode of lithium according to claim 1, which is characterized in that described to clean up nickel foam
It is dried and specifically includes afterwards:
The nickel foam is successively immersed into acetone, ethyl alcohol, hydrochloric acid, is cleaned by ultrasonic in deionized water；
The nickel foam after cleaning is put into drying oven dry.
3. the preparation method of compound cathode of lithium according to claim 1, which is characterized in that the configuration cobalt nitrate and urea
Reaction solution, obtain presoma and specifically include:
The cobalt nitrate and the urea are dissolved in the mixed solution of methanol and ethyl alcohol, reaction solution is obtained；
Reaction solution described in magnetic agitation obtains the presoma.
4. the preparation method of compound cathode of lithium according to claim 1, which is characterized in that described to be put into the nickel foam
In the reaction solution, the presoma is coated in the nickel foam with solvent-thermal method and is specifically included:
The nickel foam is put into the reaction solution；
The reaction solution is put into reaction kettle；
The reaction kettle is put into 95 DEG C of baking ovens；
Reaction obtains the nickel foam for being coated with the presoma.
5. the preparation method of compound cathode of lithium according to claim 4, which is characterized in that the nickel foam is placed on vertically
In the reaction solution.
6. the preparation method of compound cathode of lithium according to claim 1, which is characterized in that it is described taking-up be coated with it is described before
The nickel foam for driving body carries out cleaning-drying and specifically includes:
It is rinsed after the nickel foam for being coated with the presoma is taken out with deionized water and ethyl alcohol；
The nickel foam for being coated with the presoma rinsed is put into 60 DEG C of baking ovens dry.
7. the preparation method of compound cathode of lithium according to claim 1, which is characterized in that the cladding after the calcining is dry
There is the nickel foam of the presoma to specifically include:
The nickel foam for being coated with the presoma after drying is put into tube furnace；
The temperature of the tube furnace is warming up to 350 DEG C with the heating rate of 2 DEG C/min；
The nickel foam 3h of the presoma is coated with described in calcining.
8. a kind of cathode, which is characterized in that be made by the preparation method of the cathode as described in claim 1-7, including described
Conducting matrix grain.
9. a kind of battery, which is characterized in that including cathode as claimed in claim 8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599983A (en) * | 2020-05-18 | 2020-08-28 | 中山大学 | Lithium metal composite negative electrode with hydrophilic-hydrophobic lithium gradient structure and preparation method thereof |
| CN111864186A (en) * | 2020-08-27 | 2020-10-30 | 中南大学 | Preparation method of three-dimensional porous metal lithium anode |
| CN112713260A (en) * | 2019-10-25 | 2021-04-27 | 广州汽车集团股份有限公司 | Flexible lithium metal battery cathode, preparation method thereof and lithium metal battery |
| CN114023944A (en) * | 2021-11-10 | 2022-02-08 | 电子科技大学长三角研究院(湖州) | Cobalt protoxide nanosheet-sponge nickel/metal lithium composite material and preparation method and application thereof |
| CN114122332A (en) * | 2021-11-25 | 2022-03-01 | 江苏科技大学 | Method for preparing three-dimensional metal lithium cathode by using MOFs (metal-organic frameworks) derivatives |
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