CN103531769A - Lithium battery modified lithium titanate negative electrode material and preparation method thereof - Google Patents

Lithium battery modified lithium titanate negative electrode material and preparation method thereof Download PDF

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Publication number
CN103531769A
CN103531769A CN201310523725.4A CN201310523725A CN103531769A CN 103531769 A CN103531769 A CN 103531769A CN 201310523725 A CN201310523725 A CN 201310523725A CN 103531769 A CN103531769 A CN 103531769A
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CN
China
Prior art keywords
powder
silver powder
lithium titanate
parts
raw material
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
Application number
CN201310523725.4A
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Chinese (zh)
Inventor
林彭桃君
蒋森
陈夕顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
Original Assignee
HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
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Publication date
Application filed by HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd filed Critical HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
Priority to CN201310523725.4A priority Critical patent/CN103531769A/en
Publication of CN103531769A publication Critical patent/CN103531769A/en
Pending legal-status Critical Current

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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
    • H01M4/48—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
    • 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
    • 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
    • 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 invention discloses a lithium battery modified lithium titanate negative electrode material which is characterized in that the material is prepared from the raw materials of, by weight: 400 parts of lithium titanate, 3-4 parts of zinc oxide, 2-3 parts of bismuth nitrate, 4-5 parts of mica, 3-4 parts of copper nitrate, 4-5 parts of modification silver powder, and proper amount of water. According to the invention, the modification silver powder is added, such that the material is provided with good battery dynamic performance, good circulation performance, and good high-rate charge/discharge capacity. Therefore, the performance of a lithium ion battery with the material as the negative electrode is improved. Also, the material has the advantages of no toxicity, no pollution, good safety performance, wide raw material source, low price, long service life, and the like.

Description

Graphite-doping lithium titanate anode material and preparation method thereof for a kind of lithium battery
Technical field
The present invention relates to chemical energy source Material Field, particularly graphite-doping lithium titanate anode material and preparation method thereof for a kind of lithium battery.
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 graphite-doping lithium titanate anode material and preparation method thereof for a kind of lithium battery.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
A graphite-doping lithium titanate anode material, is made by the raw material of following weight portion: lithium titanate 400, zinc oxide 3-4, bismuth nitrate 2-3, mica 4-5, copper nitrate 3-4, 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.
Lithium battery graphite-doping 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 12-14Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 720-750 ℃, 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; And the present invention has the advantages such as nontoxic, pollution-free, security performance is good, raw material wide material sources, low price, and the life-span is long.
Embodiment
Below by instantiation, the present invention is described in detail.
A graphite-doping lithium titanate anode material, by following weight portion (kilogram) raw material make: lithium titanate 400, zinc oxide 3, bismuth nitrate 2, mica 4, copper nitrate 3, 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.
Lithium battery graphite-doping 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 12-14Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 720-750 ℃, 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 lithium battery graphite-doping lithium titanate anode material, is characterized in that, by the raw material of following weight portion, is made: lithium titanate 400, zinc oxide 3-4, bismuth nitrate 2-3, mica 4-5, copper nitrate 3-4, 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. lithium battery graphite-doping 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 12-14Mpa pressure, be pressed into base, put into calciner and calcine 4-5 hour at 720-750 ℃, take out, cooling, be ground into 300-400 order powder.
CN201310523725.4A 2013-10-30 2013-10-30 Lithium battery modified lithium titanate negative electrode material and preparation method thereof Pending CN103531769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310523725.4A CN103531769A (en) 2013-10-30 2013-10-30 Lithium battery modified lithium titanate negative electrode material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310523725.4A CN103531769A (en) 2013-10-30 2013-10-30 Lithium battery modified lithium titanate negative electrode material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN103531769A true CN103531769A (en) 2014-01-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016045622A1 (en) * 2014-09-26 2016-03-31 苏州宝时得电动工具有限公司 Battery, battery pack and continuous power supply
US10418666B2 (en) 2013-06-28 2019-09-17 Positec Power Tools (Suzhou) Co., Ltd. Battery

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101488584A (en) * 2009-03-06 2009-07-22 清华大学 Asymmetric lithium iron phosphate cell using lithium titanate as main active substance of negative pole

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101488584A (en) * 2009-03-06 2009-07-22 清华大学 Asymmetric lithium iron phosphate cell using lithium titanate as main active substance of negative pole

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10418666B2 (en) 2013-06-28 2019-09-17 Positec Power Tools (Suzhou) Co., Ltd. Battery
US10854928B2 (en) 2013-06-28 2020-12-01 Positec Power Tools (Suzhou) Co., Ltd. Electrolyte and battery
WO2016045622A1 (en) * 2014-09-26 2016-03-31 苏州宝时得电动工具有限公司 Battery, battery pack and continuous power supply
US11069891B2 (en) 2014-09-26 2021-07-20 Positec Power Tools (Suzhou) Co., Ltd. Battery, battery pack and continuous power supply

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Application publication date: 20140122

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