CN103531770A - High-performance lithium battery lithium titanate negative electrode material and preparation method thereof - Google Patents
High-performance lithium battery lithium titanate negative electrode material and preparation method thereof Download PDFInfo
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- CN103531770A CN103531770A CN201310523769.7A CN201310523769A CN103531770A CN 103531770 A CN103531770 A CN 103531770A CN 201310523769 A CN201310523769 A CN 201310523769A CN 103531770 A CN103531770 A CN 103531770A
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- performance
- powder
- lithium titanate
- negative electrode
- electrode material
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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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- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a high-performance lithium battery lithium titanate negative electrode material. The high-performance lithium battery lithium titanate negative electrode material is characterized by comprising, by weight, 400 parts of lithium titanate, 3-4 parts of graphite, 2-3 parts of nano-copper powder, 1-2 parts of nano-aluminum powder, 2-3 parts of sodium dodecyl benzene sulfonate, 4-5 parts of modified silver power and an appropriate amount of water. By adding the modified silver power, the high-performance lithium battery lithium titanate negative electrode material has good cell dynamics performance, cycle performance and a high-magnification charge-discharge capacity, thereby improving the performance of a lithium ion battery adopting the high-performance lithium battery lithium titanate negative electrode material as the negative electrode material. The high-performance lithium battery lithium titanate negative electrode material has excellent charge-discharge performance, largely improves the cycling stability and the high-magnification charge-discharge capacity, adopts simply and easily implemented process, and can be used for industrially preparing high-performance lithium battery electrode materials.
Description
Technical field
The present invention relates to chemical energy source Material Field, particularly a kind of high-performance lithium battery lithium titanate anode material and preparation method thereof.
Background technology
As lithium ion battery negative material-lithium titanate, due to high security, high stability, long-life and the environmental protection of lithium titanate, become the negative material of lithium ion battery of new generation and be widely used in new-energy automobile, battery-operated motor cycle and require high security, high stability and macrocyclic application.(1) it is zero strain material, good cycle (2) discharging voltage balance, and also electrolyte is unlikely decomposes, and improves lithium battery security performance; (3) compare with carbon cathode material, lithium titanate has high lithium ion diffusion coefficient, can high power charging-discharging etc. the electromotive force of (4) lithium titanate than the height of pure metal lithium, be difficult for producing lithium dendrite arm, for ensureing that the safety of lithium battery provides the foundation.But also have certain shortcoming, for example the lithium-ion-power cell energy density of other types can be lower relatively; The lithium-ion-power cell of other types is on the high side relatively; Battery consistency still there are differences etc., need further research and development.
Summary of the invention
The object of this invention is to provide a kind of high-performance lithium battery lithium titanate anode material and preparation method thereof.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
A battery lithium titanate anode material, is made by the raw material of following weight portion: lithium titanate 400, graphite 3-4, copper nanoparticle 2-3, nanometer aluminium powder 1-2, neopelex 2-3, modification silver powder 4-5, water are appropriate;
Described modification silver powder is made by the raw material of following weight portion: silver powder 100, nano-sized carbon 1-2, tapioca 1-2, bauxite 2-3, diatomite 2-3, methyl triethoxysilane 1-2, carborundum 2-3, aluminium nitride 1-2, ZnO1-2, Nb
2o
51-2; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 510-530 ℃ sintering 2-3 hour and get final product.
High-performance lithium battery lithium titanate anode material of the present invention, by following concrete steps, made: other raw material except modification silver powder is mixed, add suitable quantity of water, grind and within 2-3 hour, obtain 200-400 order slurry, spraying is dry, after oven dry, mix with modification silver powder, add the Tissuemat E powder that is equivalent to powder total weight 2-3%, stir, under 12-15Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 700-730 ℃, take out, cooling, be ground into 300-400 order powder.
The invention has the beneficial effects as follows: the present invention adds modification silver powder, make it there is good battery power and learn performance, cycle performance and high power charging-discharging capacity, thereby improved, using the performance of lithium ion battery of this material as negative material; The present invention has shown excellent charge-discharge performance, and under cyclical stability and high magnification, charge-discharge performance has also improved a lot, simple for process, can be used for preparation of industrialization high performance lithium ion battery electrode material.
Embodiment
Below by instantiation, the present invention is described in detail.
A battery lithium titanate anode material, by following weight portion (kilogram) raw material make: lithium titanate 400, graphite 3, copper nanoparticle 2, nanometer aluminium powder 1, neopelex 2, modification silver powder 4, water are appropriate;
Described modification silver powder by following weight portion (kilogram) raw material make: silver powder 100, nano-sized carbon 2, tapioca 2, bauxite 2, diatomite 3, methyl triethoxysilane 1, carborundum 2, aluminium nitride 1, ZnO1, Nb
2o
51-2; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 510-530 ℃ sintering 2-3 hour and get final product.
High-performance lithium battery lithium titanate anode material of the present invention, by following concrete steps, made: other raw material except modification silver powder is mixed, add suitable quantity of water, grind and within 2-3 hour, obtain 200-400 order slurry, spraying is dry, after oven dry, mix with modification silver powder, add the Tissuemat E powder that is equivalent to powder total weight 2-3%, stir, under 12-15Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 700-730 ℃, take out, cooling, be ground into 300-400 order powder.
Lithium titanate material of the present invention, negative pole as lithium ion battery, the LiFePO 4 material of usining is assembled into cylindrical 14500 batteries as positive pole, employing LiFePO4 is excessive, according to lithium titanate meter of the present invention, its initial charge specific capacity > 175mAh/g, specific discharge capacity > 160mAh/g, cycle performance is excellent, and its 10C multiplying power discharging specific capacity is greater than 130mAh/g, its tap density is 0.9-1.5g/cm3, specific area is 0.1-10m2/g, compacted density is 2.1-2.5g/cm3, adhesive property is good, be applicable to large-scale production and application.
Claims (2)
1. a high-performance lithium battery lithium titanate anode material, is characterized in that, by the raw material of following weight portion, is made: lithium titanate 400, graphite 3-4, copper nanoparticle 2-3, nanometer aluminium powder 1-2, neopelex 2-3, modification silver powder 4-5, water are appropriate;
Described modification silver powder is made by the raw material of following weight portion: silver powder 100, nano-sized carbon 1-2, tapioca 1-2, bauxite 2-3, diatomite 2-3, methyl triethoxysilane 1-2, carborundum 2-3, aluminium nitride 1-2, ZnO1-2, Nb
2o
51-2; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 510-530 ℃ sintering 2-3 hour and get final product.
2. high-performance lithium battery lithium titanate anode material according to claim 1, it is characterized in that, by following concrete steps, made: other raw material except modification silver powder is mixed, add suitable quantity of water, grind and within 2-3 hour, obtain 200-400 order slurry, spraying is dry, after oven dry, mix with modification silver powder, add the Tissuemat E powder that is equivalent to powder total weight 2-3%, stir, under 12-15Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 700-730 ℃, take out, cooling, be ground into 300-400 order powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523769.7A CN103531770A (en) | 2013-10-30 | 2013-10-30 | High-performance lithium battery lithium titanate negative electrode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523769.7A CN103531770A (en) | 2013-10-30 | 2013-10-30 | High-performance lithium battery lithium titanate negative electrode material and preparation method thereof |
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|---|---|
| CN103531770A true CN103531770A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310523769.7A Pending CN103531770A (en) | 2013-10-30 | 2013-10-30 | High-performance lithium battery lithium titanate negative electrode material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099107A (en) * | 2016-08-24 | 2016-11-09 | 山东圣阳电源股份有限公司 | A kind of lithium ion battery negative material and preparation method thereof and a kind of lithium ion battery |
-
2013
- 2013-10-30 CN CN201310523769.7A patent/CN103531770A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099107A (en) * | 2016-08-24 | 2016-11-09 | 山东圣阳电源股份有限公司 | A kind of lithium ion battery negative material and preparation method thereof and a kind of lithium ion battery |
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Application publication date: 20140122 |