CN103531774A - Modified lithium titanate negative electrode material made of nanometer material and preparing method thereof - Google Patents

Modified lithium titanate negative electrode material made of nanometer material and preparing method thereof Download PDF

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Publication number
CN103531774A
CN103531774A CN201310523866.6A CN201310523866A CN103531774A CN 103531774 A CN103531774 A CN 103531774A CN 201310523866 A CN201310523866 A CN 201310523866A CN 103531774 A CN103531774 A CN 103531774A
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CN
China
Prior art keywords
powder
lithium titanate
negative electrode
electrode material
nanometer
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Pending
Application number
CN201310523866.6A
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Chinese (zh)
Inventor
林彭桃君
蒋森
陈夕顺
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HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
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HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
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Priority to CN201310523866.6A priority Critical patent/CN103531774A/en
Publication of CN103531774A publication Critical patent/CN103531774A/en
Pending legal-status Critical Current

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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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a modified lithium titanate negative electrode material made of a nanometer material. The modified lithium titanate negative electrode material made of the nanometer material is characterized in that the modified lithium titanate negative electrode material comprises, by weight, 400 parts of lithium titanate, 3 to 4 parts of lithium fluoride, 2 to 3 parts of nanometer nickel powder, 1 to 2 parts of nanometer indium powder, 1 to 2 parts of sodium dodecyl benzene sulfonate, 4 to 5 parts of modified silver powder, and an appropriate amount of water. According to the modified lithium titanate negative electrode material made of the nanometer material, the modified silver powder is added, so that the modified lithium titanate negative electrode material is good in battery dynamics performance and circulation performance and high in multiplying-power charge-discharge capacity, and therefore the performance of a lithium ion battery with the material serving as a negative electrode material is improved. The modified lithium titanate negative electrode material made of the nanometer material has the advantages of being free of toxin and pollution, good in safety performance, wide in raw material source, low in price, long in service life, wide in application prospect in the lithium ion battery field and the like.

Description

A kind of nano-material modified lithium titanate anode material and preparation method thereof
Technical field
The present invention relates to chemical energy source Material Field, particularly a kind of nano-material modified 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 nano-material modified 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 lithium titanate anode material, is made by the raw material of following weight portion: lithium titanate 400, lithium fluoride 3-4, nano-nickel powder 2-3, nanometer indium powder 1-2, neopelex 1-2, 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.
Nano-material modified 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 10-15Mpa 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; The advantages such as that the present invention has is nontoxic, pollution-free, security performance is good, raw material wide material sources, low price, and the life-span is long, are with a wide range of applications in lithium ion battery field.
Embodiment
Below by instantiation, the present invention is described in detail.
A lithium titanate anode material, by following weight portion (kilogram) raw material make: lithium titanate 400, lithium fluoride 3, nano-nickel powder 2, nanometer indium powder 1, neopelex 1, 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.
Nano-material modified 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 10-15Mpa 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 negative 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 nano-material modified lithium titanate anode material, is characterized in that, by the raw material of following weight portion, is made: lithium titanate 400, lithium fluoride 3-4, nano-nickel powder 2-3, nanometer indium powder 1-2, neopelex 1-2, 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. nano-material modified 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 10-15Mpa 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.
CN201310523866.6A 2013-10-30 2013-10-30 Modified lithium titanate negative electrode material made of nanometer material and preparing method thereof Pending CN103531774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310523866.6A CN103531774A (en) 2013-10-30 2013-10-30 Modified lithium titanate negative electrode material made of nanometer material and preparing method thereof

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Application Number Priority Date Filing Date Title
CN201310523866.6A CN103531774A (en) 2013-10-30 2013-10-30 Modified lithium titanate negative electrode material made of nanometer material and preparing method thereof

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CN103531774A true CN103531774A (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
RU2558140C1 (en) * 2014-02-18 2015-07-27 Общество с ограниченной ответственностью "Научный центр "Автономные источники тока" (ООО "Научный центр "АИТ") LiCrTiO4-BASED MATERIAL OF ANODE IN LITHIUM-ION BATTERY BASED ON SPINEL-STRUCTURE AND METHOD OF ITS PRODUCTION
CN113314699A (en) * 2021-04-09 2021-08-27 上海工程技术大学 Lithium ion battery anode material and preparation method thereof

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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2558140C1 (en) * 2014-02-18 2015-07-27 Общество с ограниченной ответственностью "Научный центр "Автономные источники тока" (ООО "Научный центр "АИТ") LiCrTiO4-BASED MATERIAL OF ANODE IN LITHIUM-ION BATTERY BASED ON SPINEL-STRUCTURE AND METHOD OF ITS PRODUCTION
WO2015126285A1 (en) * 2014-02-18 2015-08-27 Общество с ограниченной ответственностью "Научный центр "Автономные источники тока" (ООО "Научный центр "АИТ") Anode material for lithium-ion battery and method for the production thereof
CN113314699A (en) * 2021-04-09 2021-08-27 上海工程技术大学 Lithium ion battery anode material and preparation method thereof

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