CN108390041A - Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof - Google Patents
Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof Download PDFInfo
- Publication number
- CN108390041A CN108390041A CN201810165067.9A CN201810165067A CN108390041A CN 108390041 A CN108390041 A CN 108390041A CN 201810165067 A CN201810165067 A CN 201810165067A CN 108390041 A CN108390041 A CN 108390041A
- Authority
- CN
- China
- Prior art keywords
- lifepo4
- composite material
- graphene composite
- current collector
- electrode slice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- 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
- H01M4/58—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
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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
- H01M4/58—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a kind of preparation methods of foamed nickel current collector LiFePO4/graphene composite material electrode slice, are related to electrochemical technology field.The method of the present invention includes the following steps：By lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose mixed sintering at carbon-coated LiFePO4 precursor；Graphene is added to the LiFePO4 precursor and carries out solid phase powder mixing, obtains LiFePO4/graphene composite material；LiFePO4/the graphene, acetylene black, Kynoar and N methyl pyrrolidone solvents are mixed, mixed slurry is obtained；By the mixing slurry gob in obtained positive plate of lithium battery on three-dimensional foam nickel；Infrared lamp irradiation is first carried out to the positive plate of lithium battery, then is dried in vacuo, last tabletting obtains foamed nickel current collector LiFePO4/graphene composite material electrode slice.
Description
Technical field
The present invention relates to electrochemical technology field more particularly to a kind of foamed nickel current collector LiFePO4/graphene are compound
Material electrodes piece and preparation method thereof.
Background technology
LiFePO 4 material has abundant, environmentally protective, the theoretical ratio of raw material sources as the positive electrode of lithium ion battery
The advantages that capacity is high, long-life and safety are good, makes the ideal electrode material in new energy power vehicle field.But due to phosphorus
Sour iron lithium pure phase is insulator, and ionic mobility and electronic conductivity are very low, influences the conductivity of itself.Graphene is
By the carbonaceous material of the closelypacked hexagonal lattice structure of single layer of carbon atom, there is excellent electricity, mechanics and optical property, make
It is widely applied in fields such as composite material, electronic device and energy storages.
Traditional affluxion body in lithium ion batteries is aluminium foil, and surface can carry positive active material, can be by the electricity of generation
Son pools external current.But if the cohesive force between active material and aluminium foil is poor, it will cause great internal resistance and
Polarization phenomena so that the cycle efficieny of battery reduces.Compared with three-dimensional structure, three-dimensional structure can be utilized effectively two-dimensional structure
Its three dimensions expands the contact area of electrolyte and active material.
Invention content
In view of this, an embodiment of the present invention provides a kind of foamed nickel current collector LiFePO4/graphene composite material electricity
Pole piece and preparation method thereof, main purpose are to obtain a kind of novel phosphoric acid iron lithium/graphene composite material.
In order to achieve the above objectives, invention broadly provides following technical solutions：
On the one hand, an embodiment of the present invention provides a kind of foamed nickel current collector LiFePO4/graphene composite material electrodes
The preparation method of piece, includes the following steps：
By lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose mixed sintering at carbon-coated LiFePO4 precursor；
Graphene is added to the LiFePO4 precursor to be mixed, LiFePO4/graphene composite material is obtained；
LiFePO4/the graphene composite material, acetylene black, Kynoar and N-Methyl pyrrolidone solvent are mixed
Stirring is closed, mixed slurry is obtained；
By the mixing slurry gob in obtained electrode slice on three-dimensional foam nickel；
Infrared lamp irradiation is first carried out to the electrode material, then is dried in vacuo, last tabletting obtains nickel foam afflux
Body LiFePO4/graphene composite material electrode slice.
Preferably, the lithium carbonate, the ferrous oxalate, the diammonium hydrogen phosphate and the sucrose molar ratio be 5：
5：5：1.
Preferably, the detailed process of the mixed sintering is：By lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose
It is ground into superfine powder in the agate mortar, the superfine powder is dried into 11.5- in the case where temperature is 115 DEG C of -125 DEG C of environment
12.5h, then be placed in 650-750 DEG C of tube furnace and be fired into carbon-coated LiFePO4 precursor after heat preservation 7.5-8.5h.
Preferably, the superfine powder dry 12h in the case where temperature is 120 DEG C of environment, then be placed in 700 DEG C of tube furnaces and protect
Carbon-coated LiFePO4 precursor is fired into after warm 8h.
Preferably, mole of the LiFePO4/graphene composite material, the acetylene black, the Kynoar
Than being 8：1：1；Using N-Methyl pyrrolidone as stirring solvent, the time of the mixing is 10-14h.
Preferably, the mixing slurry gob is in the detailed process of the foamed nickel current collector：It is titrated using pipettor
Method, control liquid-transfering gun, pipette tips are identical with the temperature of the mixed slurry, and the liquid-transfering gun that control volume is 100uL straight down, will
Pipette tips are inserted into the mixed slurry liquid level or less 2-3mm and draw mixed slurry and uniformly drip in the three-dimensional foam nickel set fluid
On.
Preferably, the time of the infrared light irradiation is 30s, the vacuum drying time is 12h.
On the other hand, an embodiment of the present invention provides a kind of foamed nickel current collector LiFePO4/graphene composite material electricity
Pole piece is prepared by the above method.
In another aspect, an embodiment of the present invention provides a kind of button cell, including anode electrode piece；The anode electrode piece
For above-mentioned foamed nickel current collector LiFePO4/graphene composite material electrode slice.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is synthesized using lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose as raw material using high temperature solid-state method
Carbon-coated LiFePO4 precursors, then by solid phase powder mix technique be added different weight percentage graphene, prepare phosphorus
Sour iron lithium/graphene composite material, according to active material: acetylene black: PVDF=8: 1: 1 ratio, with N-Methyl pyrrolidone
For stirring solvent 12h, mixed slurry is uniformly dripped with liquid-transfering gun and is used in combination in positive plate is made in three-dimensional foam nickel set fluid
Button cell is made in the glove box of argon gas atmosphere drying after being dried in vacuo 12h in infrared light irradiation.
Description of the drawings
Fig. 1 is the knot of foamed nickel current collector LiFePO4/graphene composite material electrode slice provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 2 is foamed nickel current collector LiFePO4 provided in an embodiment of the present invention/graphene composite material electrode slice signal
Figure.
Reference numeral：
1. three-dimensional foam nickel set fluid, 2. anodes, 3. diaphragms, 4. cathode, 5. negative current collectors.
Specific implementation mode
For further illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below with compared with
Specific implementation mode, technical solution, feature and its effect applied according to the present invention is described in detail as after in good embodiment.Under
State it is bright in multiple embodiments in special characteristic, structure or feature can be combined by any suitable form.
Embodiment 1
Prepare each raw material according to the ratio, is 5 according to molar ratio：5：5：1 difference lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and
Sucrose grinds 2h into superfine powder in the agate mortar, and above-mentioned superfine powder is dried 12h in the case where temperature is 120 DEG C of environment, then
It is placed in 700 DEG C of tube furnaces after keeping the temperature 8h and is fired into carbon-coated LiFePO4 precursor；Add to above-mentioned LiFePO4 precursor
Enter graphene to be mixed, mixing the specific steps are：According to mixing material in ball grinder:Ball:Alcohol is 1:1:1 ratio is mixed
12h is closed, is put into after discharging in drying box and is dried at 90 DEG C, obtain LiFePO4/graphene composite material；It is according to molar ratio
8：1：1 is molten by LiFePO4/graphene composite material, acetylene black, Kynoar mixing addition N-Methyl pyrrolidone respectively
12h is stirred in agent, obtains mixed slurry；Select volume for the liquid-transfering gun of 100uL, control liquid-transfering gun, pipette tips and above-mentioned mixing slurry
Pipette tips at the same temperature, straight down by liquid-transfering gun, are inserted into above-mentioned mixed slurry liquid level or less 2-3mm and draw mixing slurry by material
Expect and uniformly drips in electrode material is made in above-mentioned three-dimensional foam nickel set fluid, as shown in Figure 2；The electrode material dripped is placed
30s is irradiated under infrared lamp, is dried in vacuo 12h again later, foamed nickel current collector LiFePO4/graphite is made in last tabletting
Alkene composite electrode piece, structure are as shown in Figure 1；10 groups of samples are prepared according to the method described above, and use this field routine side
10 groups of samples (foamed nickel current collector LiFePO4/graphene composite material electrode slice) charge-discharge performance that method prepares the present invention
It is tested, test data is as shown in table 1.
The electric performance test result of 10 groups of composite electrode pieces of 1. embodiment 1 of table
The present invention also provides a kind of button cell, electrode film is exactly the foam prepared using the embodiment of the present invention 1
Nickel set fluid LiFePO4/graphene composite material electrode slice.
Present invention research has synthesized a kind of novel three-dimensional foamed nickel current collector LiFePO4 composite graphite alkene lithium ion battery
Positive plate, the initial discharge capacity of composite material is 142mAh/g at 0.1C, in conclusion three-dimensional foam nickel set fluid can be with
Its chemical property of apparent improvement has prodigious development potentiality in affluxion body in lithium ion batteries.
Place, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only the specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of the claims
It is accurate.
Claims (9)
1. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice, which is characterized in that including following
Step：
By lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose mixed sintering at carbon-coated LiFePO4 precursor；
Graphene is added to the LiFePO4 precursor to be mixed, LiFePO4/graphene composite material is obtained；
LiFePO4/the graphene composite material, acetylene black, Kynoar and N-Methyl pyrrolidone solvent are mixed and stirred
It mixes, obtains mixed slurry；
By the mixing slurry gob in obtained electrode slice on three-dimensional foam nickel；
Infrared lamp irradiation is first carried out to the electrode material, then is dried in vacuo, last tabletting obtains foamed nickel current collector phosphorus
Sour iron lithium/graphene composite material electrode slice.
2. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
Be characterized in that, the lithium carbonate, the ferrous oxalate, the diammonium hydrogen phosphate and the sucrose molar ratio be 5：5：5：1.
3. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
It is characterized in that, the detailed process of the mixed sintering is：Lithium carbonate, ferrous oxalate, diammonium hydrogen phosphate and sucrose are ground in agate
It is ground into superfine powder in alms bowl, the superfine powder is dried into 11.5-12.5h in the case where temperature is 115 DEG C of -125 DEG C of environment, then set
It is fired into carbon-coated LiFePO4 precursor after keeping the temperature 7.5-8.5h in 650-750 DEG C of tube furnace.
4. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
It is characterized in that, the superfine powder dry 12h in the case where temperature is 120 DEG C of environment, then is placed in 700 DEG C of tube furnaces and is burnt after heat preservation 8h
Carbon-coated LiFePO4 precursor is made.
5. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
It is characterized in that, the LiFePO4/graphene composite material, the acetylene black, the molar ratio of the Kynoar are 8：1：
1；Using N-Methyl pyrrolidone as stirring solvent, the time of the mixing is 10-14h.
6. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
It is characterized in that, the mixing slurry gob is in the detailed process of the foamed nickel current collector：Using pipettor titration, control moves
Liquid rifle, pipette tips are identical with the temperature of the mixed slurry, and straight down, pipette tips are inserted into for the liquid-transfering gun that control volume is 100uL
2-3mm below the mixed slurry liquid level draws mixed slurry and uniformly drips in the three-dimensional foam nickel set fluid.
7. the preparation method of foamed nickel current collector LiFePO4/graphene composite material electrode slice as described in claim 1,
It is characterized in that, the time of the infrared light irradiation is 30s, and the vacuum drying time is 12h.
8. foamed nickel current collector LiFePO4/graphene composite material electrode slice, which is characterized in that the electrode slice is using power
Profit requires any one of 1-7 the methods to be prepared.
9. button cell, including anode electrode piece；It is characterized in that, the anode electrode piece is any one of claim 1-8 institutes
Foamed nickel current collector LiFePO4/graphene composite material the electrode slice stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165067.9A CN108390041A (en) | 2018-02-28 | 2018-02-28 | Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165067.9A CN108390041A (en) | 2018-02-28 | 2018-02-28 | Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108390041A true CN108390041A (en) | 2018-08-10 |
Family
ID=63069392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810165067.9A Pending CN108390041A (en) | 2018-02-28 | 2018-02-28 | Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108390041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054202A (en) * | 2020-09-10 | 2020-12-08 | 辽宁九夷锂能股份有限公司 | High-energy high-rate lithium battery positive electrode additive, preparation method thereof and positive plate containing positive electrode additive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169986A (en) * | 2011-04-02 | 2011-08-31 | 江苏乐能电池股份有限公司 | Preparation method of lithium ferric phosphate / grapheme composite positive electrode material |
| CN104659332A (en) * | 2015-02-27 | 2015-05-27 | 山东润昇电源科技有限公司 | High-magnification lithium iron phosphate battery positive electrode and manufacturing method thereof |
| CN107394130A (en) * | 2017-06-22 | 2017-11-24 | 南昌航空大学 | The LFP raw powder's production technologies that a kind of three-dimensional porous graphene is modified |
-
2018
- 2018-02-28 CN CN201810165067.9A patent/CN108390041A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169986A (en) * | 2011-04-02 | 2011-08-31 | 江苏乐能电池股份有限公司 | Preparation method of lithium ferric phosphate / grapheme composite positive electrode material |
| CN104659332A (en) * | 2015-02-27 | 2015-05-27 | 山东润昇电源科技有限公司 | High-magnification lithium iron phosphate battery positive electrode and manufacturing method thereof |
| CN107394130A (en) * | 2017-06-22 | 2017-11-24 | 南昌航空大学 | The LFP raw powder's production technologies that a kind of three-dimensional porous graphene is modified |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054202A (en) * | 2020-09-10 | 2020-12-08 | 辽宁九夷锂能股份有限公司 | High-energy high-rate lithium battery positive electrode additive, preparation method thereof and positive plate containing positive electrode additive |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109004199B (en) | Preparation method of biomass hard carbon material for negative electrode of sodium-ion battery | |
| CN100546077C (en) | Composite positive pole, battery-super electric capacity energy storage means and preparation method | |
| CN100470894C (en) | Preparation method of phosphorus position partly substituted iron lithium phosphate powder | |
| CN111916822B (en) | Co-sintering modified solid electrolyte ceramic chip and preparation method thereof | |
| CN102723489B (en) | Nitrogen-doped carbon-coated Li3V2(PO4)3 cathode material and preparation method thereof | |
| CN101950801A (en) | Preparation method of positive electrode material LiFePO4/C of lithium ion battery | |
| CN100418255C (en) | Method for preparing lithium enriched lithium ion phosphate powder | |
| CN110931781A (en) | Preparation method and application of biomass carbon/sodium iron fluorophosphate composite material | |
| CN109704302A (en) | A kind of phosphorus doping porous carbon materials and its preparation and the application in lithium-sulfur cell coated separator | |
| CN112614978B (en) | Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof | |
| CN102339999B (en) | Polyanion composite material, its preparation method and application | |
| CN103094567A (en) | Anode material of lithium fast ionic conductor compounded lithium battery and preparation method of anode material | |
| CN103378355B (en) | Alkali metal secondary battery and the preparation method of negative electrode active material, negative material, negative pole and negative electrode active material | |
| CN103094580A (en) | Composite anode material and synthesis method and application thereof | |
| CN103515600A (en) | Ti3SiC2 and carbon composite modified LiFePO4 lithium ion battery anode material and preparation method thereof | |
| CN106129358A (en) | A kind of preparation method of porous N doping class Graphene carbon film coated LiFePO 4 for lithium ion batteries complex | |
| CN101369659B (en) | Novel lithium iron phosphate anode material used for lithium ion battery and method of manufacturing the same | |
| CN108682806A (en) | Porous carbon sulfur-selenium-loaded composite cathode material and preparation method thereof | |
| CN112421049A (en) | Method for preparing lithium battery silicon-carbon negative electrode material through ball milling and silicon-carbon negative electrode material | |
| CN108172813B (en) | Composite cathode material and preparation method thereof | |
| CN108390041A (en) | Foamed nickel current collector LiFePO4/graphene composite material electrode slice and preparation method thereof | |
| CN114597370B (en) | Air-stable high-voltage long-cycle-life sodium ion battery positive electrode material and preparation method thereof | |
| CN114203994B (en) | Preparation method and application of positive electrode material of lithium-sulfur battery | |
| CN114583137A (en) | Method for modifying carbon surface by doping sulfur with phosphorus and application thereof | |
| CN103187560A (en) | Sulfur-carbon composite material with imitation animal scaly structure and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |