CN103531788A - Modified lithium manganate positive electrode material for lithium battery and preparation method of modified lithium manganate positive electrode material - Google Patents

Modified lithium manganate positive electrode material for lithium battery and preparation method of modified lithium manganate positive electrode material Download PDF

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Publication number
CN103531788A
CN103531788A CN201310523859.6A CN201310523859A CN103531788A CN 103531788 A CN103531788 A CN 103531788A CN 201310523859 A CN201310523859 A CN 201310523859A CN 103531788 A CN103531788 A CN 103531788A
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CN
China
Prior art keywords
powder
lithium manganate
positive electrode
electrode material
modified
Prior art date
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Pending
Application number
CN201310523859.6A
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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 CN201310523859.6A priority Critical patent/CN103531788A/en
Publication of CN103531788A publication Critical patent/CN103531788A/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)
  • Composite Materials (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a modified lithium manganate positive electrode material for a lithium battery. The modified lithium manganate positive electrode material for the lithium battery is characterized by being made of the following raw materials including, by weight, 500 parts of lithium manganate, 1-2 parts of nanometer titania, 2-3 parts of attapulgite, 3-4 parts of straw ash, 4-5 parts of modified silver powder and an appropriate amount of water. According to the modified lithium manganate positive electrode material for the lithium battery, 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 modified lithium manganate positive electrode material for the lithium battery is high in discharge capacity, thereby ensuring the industrial consistency and the runtime of power batteries; besides, the modified lithium manganate positive electrode material for the lithium battery is simple in process, low in price and nontoxic, and causes no environmental pollution.

Description

Modified lithium manganate cathode material and preparation method thereof for a kind of lithium battery
Technical field
The present invention relates to chemical energy source Material Field, particularly modified lithium manganate cathode material and preparation method thereof for a kind of lithium battery.
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 modified lithium manganate cathode 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 modified lithium manganate cathode material, is made by the raw material of following weight portion: LiMn2O4 500, nano titanium oxide 1-2, attapulgite 2-3, stalk ashes 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.
Lithium battery modified lithium manganate cathode 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 lithium manganate material steady quality, performance homogeneous, has good high-temperature cyclic type; Discharge capacity of the present invention is large, guaranteed consistency and the flying power of electrokinetic cell industrialization, and technique is simple, cheap, and nontoxicity, does not cause environmental pollution.
Embodiment
Below by instantiation, the present invention is described in detail.
A modified lithium manganate cathode material, by following weight portion (kilogram) raw material make: LiMn2O4 500, nano titanium oxide 1, attapulgite 2, stalk ashes 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.
Lithium battery modified lithium manganate cathode 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.
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 129mAh/g.The high temperature cyclic performance of the battery of preparing is superior, and after 100 weeks, capability retention is 88.1%.

Claims (2)

1. a lithium battery modified lithium manganate cathode material, is characterized in that, by the raw material of following weight portion, is made: LiMn2O4 500, nano titanium oxide 1-2, attapulgite 2-3, stalk ashes 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. lithium battery modified lithium manganate cathode 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.
CN201310523859.6A 2013-10-30 2013-10-30 Modified lithium manganate positive electrode material for lithium battery and preparation method of modified lithium manganate positive electrode material Pending CN103531788A (en)

Priority Applications (1)

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CN201310523859.6A CN103531788A (en) 2013-10-30 2013-10-30 Modified lithium manganate positive electrode material for lithium battery and preparation method of modified lithium manganate positive electrode material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310523859.6A CN103531788A (en) 2013-10-30 2013-10-30 Modified lithium manganate positive electrode material for lithium battery and preparation method of modified lithium manganate positive electrode material

Publications (1)

Publication Number Publication Date
CN103531788A true CN103531788A (en) 2014-01-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107634213A (en) * 2017-10-19 2018-01-26 柳州光华科技有限公司 A kind of lithium manganate cell positive electrode material
CN107681145A (en) * 2017-10-19 2018-02-09 柳州凯通新材料科技有限公司 A kind of modified lithium manganate cathode material
CN107919471A (en) * 2017-11-29 2018-04-17 淮安新能源材料技术研究院 Recessed soil cladding nickel lithium manganate cathode material and preparation method thereof

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107634213A (en) * 2017-10-19 2018-01-26 柳州光华科技有限公司 A kind of lithium manganate cell positive electrode material
CN107681145A (en) * 2017-10-19 2018-02-09 柳州凯通新材料科技有限公司 A kind of modified lithium manganate cathode material
CN107919471A (en) * 2017-11-29 2018-04-17 淮安新能源材料技术研究院 Recessed soil cladding nickel lithium manganate cathode material and preparation method thereof

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Application publication date: 20140122