CN103531787A - Aluminum spinel modified lithium manganate positive electrode material and preparation method thereof - Google Patents

Aluminum spinel modified lithium manganate positive electrode material and preparation method thereof Download PDF

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Publication number
CN103531787A
CN103531787A CN201310523809.8A CN201310523809A CN103531787A CN 103531787 A CN103531787 A CN 103531787A CN 201310523809 A CN201310523809 A CN 201310523809A CN 103531787 A CN103531787 A CN 103531787A
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CN
China
Prior art keywords
powder
lithium manganate
positive electrode
silver powder
electrode material
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Pending
Application number
CN201310523809.8A
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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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Application filed by HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd filed Critical HEFEI HENGNENG NEW ENERGY TECHNOLOGY Co Ltd
Priority to CN201310523809.8A priority Critical patent/CN103531787A/en
Publication of CN103531787A publication Critical patent/CN103531787A/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
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • 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 an aluminum spinel modified lithium manganate positive electrode material. The aluminum spinel modified lithium manganate positive electrode material is characterized by being made of the following raw materials including, by weight, 500 parts of lithium manganate, 3-4 parts of aluminum spinel, 1-2 parts of methyltriacetoxysilane, 2-3 parts of nickel acetate, 3-4 parts of zinc stearate, 4-5 parts of modified silver powder and an appropriate amount of water. According to the aluminum spinel modified lithium manganate positive electrode material, the modified silver powder is added, so that the lithium manganate material is stable in quality, uniform in performance, and good in high-temperature cyclicity; the aluminum spinel modified lithium manganate positive electrode material is high in discharge capacity, thereby ensuring the consistency of industrialization and the runtime of power batteries; besides, the preparation method of the aluminum spinel modified lithium manganate positive electrode material is simple and has fewer steps, and the prepared material is better in high temperature circulation and storage performance, thereby being long in service life.

Description

A kind of aluminate improves manganate cathode material for lithium and preparation method thereof
Technical field
The present invention relates to chemical energy source Material Field, particularly a kind of aluminate improves manganate cathode material for lithium and preparation method thereof.
Background technology
LiMn2O4 is one of more promising lithium ion anode material, compare traditional positive electrodes such as cobalt acid lithium, LiMn2O4 has aboundresources, cost is low, pollution-free, fail safe is good, the advantages such as good rate capability, it is desirable power battery anode material, but its material itself is very unstable, easily decompose and produce gas, therefore be used for mixing and using with other material, to reduce battery core cost, but its cycle life decay is very fast, easily there is bulging, high-temperature behavior is poor, life-span is relatively short, but its electrochemical stability has limited its industrialization greatly, need to improve.
Summary of the invention
The object of this invention is to provide a kind of aluminate and improve manganate cathode material for lithium and preparation method thereof.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
Improve a manganate cathode material for lithium, by the raw material of following weight portion, made: LiMn2O4 500, aluminate 3-4, methyl triacetoxysilane 1-2, nickel acetate 2-3, zinc stearate 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, Paris white 2-3, aluminium triphosphate 2-3, montmorillonite powder 1-2, crosslinking agent TAC1-2,firebrake ZB 1-2, magnesium hydroxide 1-2, Ta2O5 2-3, molybdenum trioxide 1-2; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 550-580 ℃ sintering 2-3 hour and get final product.
Aluminate of the present invention improves manganate cathode material for lithium, 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 lithium manganate material steady quality, performance homogeneous, has good high-temperature cyclic type; Discharge capacity of the present invention is large, has guaranteed consistency and the flying power of electrokinetic cell industrialization, and method is simple, step is few, and the material of preparation possesses better high temperature circulation and storge quality, and the life-span is long.
Embodiment
Below by instantiation, the present invention is described in detail.
Improve a manganate cathode material for lithium, by following weight portion (kilogram) raw material make: LiMn2O4 500, aluminate 3, methyl triacetoxysilane 1, nickel acetate 2, zinc stearate 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 1, Paris white 2, aluminium triphosphate 2, montmorillonite powder 2, crosslinking agent TAC1,firebrake ZB 1, magnesium hydroxide 1, Ta2O5 3, molybdenum trioxide 1; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 550-580 ℃ sintering 2-3 hour and get final product.
Aluminate of the present invention improves manganate cathode material for lithium, 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.
Take lithium sheet as negative pole, with the present embodiment gained LiMn2O4, make positive pole, take lithium hexafluoro phosphate as electrolyte is assembled into battery, with 0.2C electric current, discharge and recharge, the first specific discharge capacity that records this battery is 128mAh/g.The high temperature cyclic performance of the battery of preparing is superior, and after 100 weeks, capability retention is 88.2%.

Claims (2)

1. an aluminate improves manganate cathode material for lithium, it is characterized in that, by the raw material of following weight portion, made: LiMn2O4 500, aluminate 3-4, methyl triacetoxysilane 1-2, nickel acetate 2-3, zinc stearate 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, Paris white 2-3, aluminium triphosphate 2-3, montmorillonite powder 1-2, crosslinking agent TAC1-2,firebrake ZB 1-2, magnesium hydroxide 1-2, Ta2O5 2-3, molybdenum trioxide 1-2; Each raw material is mixed, be heated to 50-55 ℃, grind 1-2 hour, be uniformly dispersed into powder, send in calciner at 550-580 ℃ sintering 2-3 hour and get final product.
2. aluminate improves manganate cathode material for lithium 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.
CN201310523809.8A 2013-10-30 2013-10-30 Aluminum spinel modified lithium manganate positive electrode material and preparation method thereof Pending CN103531787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310523809.8A CN103531787A (en) 2013-10-30 2013-10-30 Aluminum spinel modified lithium manganate positive electrode material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310523809.8A CN103531787A (en) 2013-10-30 2013-10-30 Aluminum spinel modified lithium manganate positive electrode material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN103531787A true CN103531787A (en) 2014-01-22

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Country Status (1)

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CN (1) CN103531787A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1641912A (en) * 2004-01-02 2005-07-20 深圳华粤宝电池有限公司 Lithium ion cell anode, lithium cell using same and its manufacturing method
CN1736636A (en) * 2005-09-12 2006-02-22 昆明理工恒达科技有限公司 Low loose density sheet-like silver powder preparation method
CN102414876A (en) * 2009-04-24 2012-04-11 大日本印刷株式会社 Electrode plate for nonaqueous electrolyte secondary battery, method for producing electrode plate for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1641912A (en) * 2004-01-02 2005-07-20 深圳华粤宝电池有限公司 Lithium ion cell anode, lithium cell using same and its manufacturing method
CN1736636A (en) * 2005-09-12 2006-02-22 昆明理工恒达科技有限公司 Low loose density sheet-like silver powder preparation method
CN102414876A (en) * 2009-04-24 2012-04-11 大日本印刷株式会社 Electrode plate for nonaqueous electrolyte secondary battery, method for producing electrode plate for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

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Application publication date: 20140122