CN112408502A - Battery negative electrode material and battery for 5G mobile phone - Google Patents
Battery negative electrode material and battery for 5G mobile phone Download PDFInfo
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- CN112408502A CN112408502A CN202011217580.1A CN202011217580A CN112408502A CN 112408502 A CN112408502 A CN 112408502A CN 202011217580 A CN202011217580 A CN 202011217580A CN 112408502 A CN112408502 A CN 112408502A
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- battery
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
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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
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
- H01M4/624—Electric conductive fillers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a battery cathode material applied to a 5G mobile phone, which is prepared by the following steps of (1) preparing core liquid: weighing Ni salt, Co salt, citric acid and polyvinylpyrrolidone, adding into a solvent, and stirring; (2) preparing shell liquid: mixing tetrabutyl titanate and polyethylene glycol, adding polyvinylpyrrolidone, stirring and mixing; (3) respectively placing the injectors filled with the shell solution and the core solution on an electrostatic spinning injector for coaxial electrospinning, and collecting the obtained composite material on a battery negative current collector; (4) in an inert atmosphere/H2Performing lower heat treatment; then removing the carbon template in the air atmosphere, and applying the negative electrodeThe battery has good rate performance and cycling stability, and can meet the requirements of 5G mobile phones.
Description
Technical Field
The invention relates to a battery cathode material and a battery for a 5G mobile phone, in particular to a preparation process of the battery cathode material for the 5G mobile phone.
Background
With the progress of the era, the 5G network is used as a 5 th generation mobile communication network, the network transmission speed of the 5G network is hundreds of times faster than that of the 4G network, and the whole ultra-high definition film can be downloaded within seconds; with the birth of 5G communication technology, the era of sharing 3D movies, games and ultra-high definition television programs by using intelligent terminals begins to move to us; the 5G mobile phone is a smart phone using a fifth generation communication system, the direct problem caused by the high transmission speed of 5G communication is that the electric quantity of a mobile phone battery is consumed too fast, the 5G mobile phone is popularized to bring new opportunities and challenges to a lithium battery, and the 5G mobile phone not only requires the battery to be light, but also requires the battery to have high capacity and longer service life.
Lithium ion batteries have already taken a mainstream status in the mobile phone market by virtue of their outstanding advantages of high energy density, high safety, no memory effect, long working life, etc. The performance of the lithium ion battery is directly influenced by the capacity of the negative electrode of the lithium ion battery, and the lithium ion battery usually uses graphite as a negative electrode material at present, but the energy density of the whole lithium ion battery is limited due to the low theoretical capacity of the graphite.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an improved lithium ion battery cathode material for a 5G mobile phone, which solves the problems of low energy density, poor conductivity and poor stability of the conventional cathode material.
A preparation method of a 5G mobile phone battery negative electrode material is characterized by comprising the following steps:
(1) preparation of NiCo2O4Core liquid: weighing Ni salt, Co salt, citric acid and polyvinylpyrrolidone, adding into deionized water, and stirring;
(2) preparing shell liquid: mixing tetrabutyl titanate and polyethylene glycol, adding polyvinylpyrrolidone, stirring and mixing;
(3) respectively placing the injectors filled with the shell solution and the core solution on an electrostatic spinning injector for coaxial electrospinning, and collecting the obtained composite material on a current collector;
(4) putting the composite material obtained in the step 3 in inert atmosphere/H2Performing lower heat treatment;
(5) calcining in air atmosphere to remove carbon template and form void/NiCo2O4/void/Ti4O7。
Preferably, the molar ratio of the Ni salt, the Co salt and the citric acid is 1:2: (0.5-3);
preferably, the heat treatment temperature in the step 4 is 600-900 ℃;
preferably, the calcination temperature in the air atmosphere in the step 5 is 250-350 ℃;
preferably, in the step 2, the mass ratio of the tetrabutyl titanate to the polyethylene glycol is 1: (0.1-1); the technical effects are as follows:
the void/NiCo obtained by the invention2O4/void/Ti4O7，Ti4O7Increased NiCo2O4The conductivity of the NiCo composite material is improved, the problem of low capacity caused by a single material is solved by compounding the two materials, and the NiCo is effectively solved by a hollow structure2O4The volume expansion problem is favorable for full contact of electrolyte and electrode materials, the composite material is directly collected on a current collector, the preparation of electrode slurry is avoided, the use of a conductive agent and a binder is omitted, the process is simpler, the composite material is applied to a battery, the cycle performance, the rate performance and the cycle stability of the battery are improved, and the requirement of a 5G mobile phone on the battery can be met.
Detailed Description
Example 1
(1) Preparation of NiCo2O4Core liquid: weighing nickel sulfate, cobalt sulfate, citric acid and polyvinylpyrrolidone in a molar ratio of 1:2:0.5, adding into deionized water, and stirring;
(2) preparing shell liquid: weighing tetrabutyl titanate and polyethylene glycol in a mass ratio of 1:0.5, mixing, adding polyvinylpyrrolidone, stirring and mixing;
(3) respectively placing the injectors filled with the shell solution and the core solution on an electrostatic spinning injector for coaxial electrospinning, and collecting the obtained composite material on a current collector;
(4) subsequently, the composite material obtained in step 3 is put in an inert atmosphere/H2Heat treatment is carried out for 2 hours at 800 ℃;
(5) calcining the composite material in the step 4 at 300 ℃ for 0.5h in an air atmosphere to remove the carbon template to form void/NiCo2O4/void/Ti4O7。
Example 2
(1) Preparation of NiCo2O4Core liquid: weighing nickel sulfate, cobalt chloride, citric acid and polyvinylpyrrolidone in a molar ratio of 1:2:0.3, adding into deionized water, stirring；
(2) Preparing shell liquid: weighing tetrabutyl titanate and polyethylene glycol in a mass ratio of 1:0.5, mixing, adding polyvinylpyrrolidone, stirring and mixing;
(3) respectively placing the injectors filled with the shell solution and the core solution on an electrostatic spinning injector for coaxial electrospinning, and collecting the obtained composite material on a current collector;
(4) subsequently, the composite material obtained in step 3 is put in an inert atmosphere/H2Heat treatment is carried out for 2 hours at the temperature of 850 ℃;
(5) calcining the composite material in the step 4 at the temperature of 280 ℃ for 0.5h in air atmosphere to remove the carbon template to form void/NiCo2O4/void/Ti4O7。
The sample of example 1-2 was used as a positive electrode, a Li plate as a negative electrode, polyethylene as a separator, and LiPF6The half-cell was assembled as an electrolyte, and a charge/discharge test was performed at a current density of 0.1A/g, and the results of the electrochemical performance test are shown in the following table.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A preparation method of a 5G mobile phone battery negative electrode material is characterized by comprising the following steps:
(1) preparation of NiCo2O4Core liquid: weighing Ni salt, Co salt, citric acid and polyvinylpyrrolidone, adding into deionized water, and stirring;
(2) preparing shell liquid: mixing tetrabutyl titanate and polyethylene glycol, adding polyvinylpyrrolidone, stirring and mixing;
(3) respectively placing the injectors filled with the shell solution and the core solution on an electrostatic spinning injector for coaxial electrospinning, and collecting the obtained composite material on a current collector;
(4) putting the composite material obtained in the step 3 in inert atmosphere/H2Performing lower heat treatment;
(5) calcining in air atmosphere to remove carbon template and form void/NiCo2O4/void/Ti4O7。
2. The preparation method of the 5G mobile phone battery negative electrode material as claimed in claim 1, wherein the molar ratio of the Ni salt, the Co salt and the citric acid is 1:2: (0.5-3).
3. The method for preparing the negative electrode material of the battery for the 5G mobile phone as claimed in claim 1, wherein the heat treatment temperature in the step 4 is 600-900 ℃.
4. The method for preparing the negative electrode material of the battery for the 5G mobile phone as claimed in claim 1, wherein the calcination temperature in the air atmosphere in the step 5 is 250-350 ℃.
5. The preparation method of the 5G mobile phone battery negative electrode material according to claim 1, wherein the mass ratio of the tetrabutyl titanate to the polyethylene glycol in the step 2 is 1: (0.1-1).
6. A battery, characterized in that the composite material according to claims 1-5 is used as a negative electrode.
7. Use of the battery of claim 6 in a 5G handset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217580.1A CN112408502A (en) | 2020-11-04 | 2020-11-04 | Battery negative electrode material and battery for 5G mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217580.1A CN112408502A (en) | 2020-11-04 | 2020-11-04 | Battery negative electrode material and battery for 5G mobile phone |
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| CN112408502A true CN112408502A (en) | 2021-02-26 |
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| CN202011217580.1A Withdrawn CN112408502A (en) | 2020-11-04 | 2020-11-04 | Battery negative electrode material and battery for 5G mobile phone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797860A (en) * | 2022-03-14 | 2022-07-29 | 重庆大学 | Ti with transition metal loaded on surface 4 O 7 And preparation method and application thereof |
-
2020
- 2020-11-04 CN CN202011217580.1A patent/CN112408502A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797860A (en) * | 2022-03-14 | 2022-07-29 | 重庆大学 | Ti with transition metal loaded on surface 4 O 7 And preparation method and application thereof |
| CN114797860B (en) * | 2022-03-14 | 2023-06-09 | 重庆大学 | Ti with transition metal loaded on surface 4 O 7 Preparation method and application thereof |
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