CN110518196A - A kind of negative electrode material of lithium battery - Google Patents
A kind of negative electrode material of lithium battery Download PDFInfo
- Publication number
- CN110518196A CN110518196A CN201910624450.0A CN201910624450A CN110518196A CN 110518196 A CN110518196 A CN 110518196A CN 201910624450 A CN201910624450 A CN 201910624450A CN 110518196 A CN110518196 A CN 110518196A
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- negative electrode
- electrode material
- lithium
- lithium battery
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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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
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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
- H01M4/625—Carbon or graphite
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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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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of negative electrode materials of lithium battery, belong to technical field of lithium batteries, including below according to the raw material of parts by weight: 30-45 parts of graphene, 20-30 parts of lithium titanate, 10-15 parts of titanium niobate, 0.1-0.3 parts of dispersing agent, 0.1-0.3 parts of conductive agent, 100-150 parts of water.The present invention can provide splendid static conductive performance, collect the micro-current of active material, so as to which the contact resistance between negative electrode material and afflux is greatly lowered, and adhesive ability between the two can be improved, the usage amount of binder can be reduced, and then generates the overall performance of battery and is obviously improved.The negative electrode material of lithium battery of the invention has the characteristics that charge/discharge capacity is high, safety is good, is suitble to promote and apply compared with lithium titanate anode material.
Description
Technical field
The invention belongs to technical field of lithium batteries, are related to a kind of negative electrode material of lithium battery.
Background technique
Lithium cell cathode material holds power battery safety lifeblood, in lithium ion battery negative material, except graphitization
Carbonaceous mesophase spherules (MCMB), amorphous carbon, silicon or tin class occupy outside the fraction market share, and natural graphite and artificial graphite account for
According to 90% or more the negative electrode material market share.It is shown in negative electrode material market statistics in 2018: the whole world of negative electrode material
Total output application reaches 32000 tons, increases by 28% compared to the same period last year, wherein both natural graphite and artificial plumbago negative pole material
89% market share is occupied, and as this several years due to lithium in the speedup of electronic product, especially mobile phone plane plate PC domain
Ion battery application increase, cause this several annual capacity of corresponding battery plus-negative plate material rapidly to rise, graphite cathode material from
Continuous 3 years speedups all reach 25% or more within 2015 to 2018.
Lithium cell cathode material in the prior art, for example, a kind of preparation method of lithium titanate material, lithium titanate material and
Lithium titanate battery, application number: 201810383871.4 applyings date: 2018-04-26, a kind of lithium titanate material of the disclosure of the invention
Preparation method, lithium titanate material and lithium titanate battery, which includes: using deionized water, to titanium source, lithium source and niobium
Source carries out wet-mixing, obtains mixing niobium lithium titanate slurry；The niobium lithium titanate slurry of mixing is dried, be sintered and crushed, is obtained
Niobium lithium titanate anode material is mixed to required gram volume.The solution of the present invention, can overcome in the prior art gram volume it is low, preparation
Complex process and it is at high cost the defects of, realize the beneficial effect that gram volume is high, preparation process is simple and at low cost.But metatitanic acid
The security performance of lithium titanate cathode material is poor.
Summary of the invention
It is an object of the invention to overcome defect existing in the prior art, provide that a kind of charge/discharge capacity is high, safety
The negative electrode material of good lithium battery.
Itself the specific technical proposal is:
A kind of negative electrode material of lithium battery, including below according to the raw material of parts by weight: 30-45 parts of graphene, lithium titanate 20-30
Part, 10-15 parts of titanium niobate, 0.1-0.3 parts of dispersing agent, 0.1-0.3 parts of conductive agent, 100-150 parts of water.
Further, including below according to the raw material of parts by weight: 40 parts of graphene, 25 parts of lithium titanate, 12 parts of titanium niobate, dispersion
0.2 part of agent, 0.2 part of conductive agent, 130 parts of water.
It further, further include conductive coating.
Further, the conductive coating is that conductive coating applies carbon copper foil.
Further, the conductive agent is the mixture of acetylene black, carbon fiber or both.
Further, the dispersing agent is one or both of dodecyl sodium sulfate, polyethylene glycol.
The preparation method of the negative electrode material of lithium battery of the present invention successively takes graphene, lithium titanate, niobium according to parts by weight
Sour titanium, dispersing agent, conductive agent, water are added in super shearing dispersing apparatus and mix, is then added to ball milling in ball mill, drying,
It is calcined at being 850-900 DEG C in temperature, after cooling, be crushed, be sieved to get the lithium cell cathode material.
Compared with prior art, the invention has the benefit that
The present invention can provide splendid static conductive performance, collect the micro-current of active material, negative so as to be greatly lowered
Contact resistance between pole material and afflux, and adhesive ability between the two can be improved, the usage amount of binder can be reduced, into
And it generates the overall performance of battery and is obviously improved.The negative electrode material of lithium battery of the invention is the same as lithium titanate anode material phase
Than having the characteristics that charge/discharge capacity is high, safety is good, being suitble to promote and apply.
Specific embodiment
Technical solution of the present invention is described in more detail combined with specific embodiments below.
Embodiment 1
A kind of negative electrode material of lithium battery, including below according to the raw material of parts by weight: 30 parts of graphene, 20 parts of lithium titanate, niobic acid
10 parts of titanium, 0.1 part of dispersing agent, 0.1 part of conductive agent, 100 parts of water.
It further include conductive coating.
The conductive coating is that conductive coating applies carbon copper foil.
The conductive agent is acetylene black.
The dispersing agent is dodecyl sodium sulfate.
The preparation method of the negative electrode material of lithium battery of the present invention successively takes graphene, lithium titanate, niobium according to parts by weight
Sour titanium, dispersing agent, conductive agent, water are added in super shearing dispersing apparatus and mix, is then added to ball milling in ball mill, drying,
It is calcined at being 850 DEG C in temperature, after cooling, be crushed, be sieved to get the lithium cell cathode material.
Embodiment 2
A kind of negative electrode material of lithium battery, including below according to the raw material of parts by weight: 40 parts of graphene, 25 parts of lithium titanate, niobic acid
12 parts of titanium, 0.2 part of dispersing agent, 0.2 part of conductive agent, 130 parts of water.
It further include conductive coating.
The conductive coating is that conductive coating applies carbon copper foil.
The conductive agent is the mixture of both acetylene black, carbon fiber.
The dispersing agent is dodecyl sodium sulfate, in polyethylene glycol.
The preparation method of the negative electrode material of lithium battery of the present invention successively takes graphene, lithium titanate, niobium according to parts by weight
Sour titanium, dispersing agent, conductive agent, water are added in super shearing dispersing apparatus and mix, is then added to ball milling in ball mill, drying,
It is calcined at being 860 DEG C in temperature, after cooling, be crushed, be sieved to get the lithium cell cathode material.
Embodiment 3
A kind of negative electrode material of lithium battery, including below according to the raw material of parts by weight: 45 parts of graphene, 30 parts of lithium titanate, niobic acid
15 parts of titanium, 0.3 part of dispersing agent, 0.3 part of conductive agent, 150 parts of water.
It further include conductive coating.
The conductive coating is that conductive coating applies carbon copper foil.
The conductive agent is carbon fiber.
The dispersing agent is in polyethylene glycol.
The preparation method of the negative electrode material of lithium battery of the present invention successively takes graphene, lithium titanate, niobium according to parts by weight
Sour titanium, dispersing agent, conductive agent, water are added in super shearing dispersing apparatus and mix, is then added to ball milling in ball mill, drying,
It is calcined at being 900 DEG C in temperature, after cooling, be crushed, be sieved to get the lithium cell cathode material.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (6)
1. a kind of negative electrode material of lithium battery, which is characterized in that including below according to the raw material of parts by weight: 30-45 parts of graphene,
20-30 parts of lithium titanate, 10-15 parts of titanium niobate, 0.1-0.3 parts of dispersing agent, 0.1-0.3 parts of conductive agent, 100-150 parts of water.
2. the negative electrode material of lithium battery according to claim 1, which is characterized in that including below according to the original of parts by weight
Material: 40 parts of graphene, 25 parts of lithium titanate, 12 parts of titanium niobate, 0.2 part of dispersing agent, 0.2 part of conductive agent, 130 parts of water.
3. the negative electrode material of lithium battery according to claim 1, which is characterized in that further include conductive coating.
4. the negative electrode material of lithium battery according to claim 3, which is characterized in that the conductive coating is conductive coating painting
Carbon copper foil.
5. the negative electrode material of lithium battery according to claim 1, which is characterized in that the conductive agent is acetylene black, carbon fiber
The mixture of dimension or both.
6. the negative electrode material of lithium battery according to claim 1, which is characterized in that the dispersing agent is dodecyl sodium sulfonate
One or both of sodium, polyethylene glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910624450.0A CN110518196A (en) | 2019-07-11 | 2019-07-11 | A kind of negative electrode material of lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910624450.0A CN110518196A (en) | 2019-07-11 | 2019-07-11 | A kind of negative electrode material of lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403718A (en) * | 2020-03-31 | 2020-07-10 | 浙江大学 | Titanium niobium oxide/vertical graphene/titanium carbide-carbon composite material and preparation method and application thereof |
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| CN107425180A (en) * | 2016-05-24 | 2017-12-01 | 中国科学院苏州纳米技术与纳米仿生研究所 | Three-dimensional grapheme/silicon compound system, its preparation method and application |
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Application publication date: 20191129 |