CN107055595A - A kind of preparation method of lithium cell cathode material - Google Patents

A kind of preparation method of lithium cell cathode material Download PDF

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Publication number
CN107055595A
CN107055595A CN201710250504.2A CN201710250504A CN107055595A CN 107055595 A CN107055595 A CN 107055595A CN 201710250504 A CN201710250504 A CN 201710250504A CN 107055595 A CN107055595 A CN 107055595A
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CN
China
Prior art keywords
tio
lithium
preparation
cathode material
cell cathode
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Pending
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CN201710250504.2A
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Chinese (zh)
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黄正平
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Individual
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Individual
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Priority to CN201710250504.2A priority Critical patent/CN107055595A/en
Publication of CN107055595A publication Critical patent/CN107055595A/en
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/003—Titanates
    • C01G23/005—Alkali titanates
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention discloses a kind of preparation method of lithium cell cathode material, comprises the following steps：S1, the K by 5 10g2TiO3Mixed with 150 200ml 0.1mol/L acid solutions, carry out ion exchange, filtered after 23 hours, obtain compound H2TiO3；S2, by 3 4g H2TiO3It is placed in 0.2mol/L lithium salt solution, stirs；S3, the reactant after being sufficiently mixed is placed in water heating kettle, after being put into Muffle furnace 110 120 DEG C of insulations 10 12 hours, suction filtration, washing obtain Li4Ti5O12.The present invention obtains bigger serface Li4Ti5O12Specific surface area is big, as the lithium excellent electrical property of negative material, with environmental protection, the simple advantage of technique.

Description

A kind of preparation method of lithium cell cathode material
Technical field
The present invention relates to the technical field of battery, more particularly to a kind of lithium cell cathode material.
Background technology
Lithium titanate is widely used in new-energy automobile, electric motorcycle as the negative material of lithium ion battery of new generation Car and require high security, high stability and macrocyclic application field.The lithium titanate of the loose structure of high-specific surface area, favorably In the contact area for improving electrode and electrolyte, so as to lift the performance of lithium titanate.Existing lithium titanate preparation technology, high temperature is anti- Product grain should be descended easily to grow up, pore structure is easily caved in, lithium titanate specific surface area can be caused very small.
The content of the invention
It is an object of the invention to provide a kind of lithium cell cathode material, solve one in above-mentioned prior art problem or It is multiple.
The present invention provides a kind of preparation method of lithium cell cathode material, comprises the following steps：
S1, the K by 5-10g2TiO3Mixed with 150-200ml 0.1mol/L acid solutions, carry out ion exchange, 2-3 hours After filter, obtain compound H2TiO3；
S2, by 3-4g H2TiO3It is placed in 0.2mol/L lithium salt solution, stirs；
S3, the reactant after being sufficiently mixed is placed in water heating kettle, is put into 110-120 DEG C of insulation 10-12 in Muffle furnace small Shi Hou, suction filtration, washing, obtains Li4Ti5O12。
In some embodiments, acid solution is the one or more in hydrochloric acid or nitric acid.
In some embodiments, lithium salt solution is the one or more in lithium hydroxide or lithium nitrate.
Embodiment
Following case study on implementation, the present invention is described in more detail.
Case study on implementation 1：
A1, the K by 5g2TiO3Mixed with 150ml 0.1mol/L hydrochloric acid solutions, carry out ion exchange, filtered after 2 hours, Obtain compound H2TiO3；
A2, by 3g H2TiO3It is placed in 0.2mol/L lithium hydroxide salting liquid, stirs；
A3, the reactant after being sufficiently mixed is placed in water heating kettle, after being put into Muffle furnace 110 DEG C of insulations 12 hours, taken out Filter, washing, obtain Li4Ti5O12
Case study on implementation 2：
B1, the K by 10g2TiO3Mixed with 200ml 0.1mol/L salpeter solutions, carry out ion exchange, mistake after 3 hours Filter, obtains compound H2TiO3；
B2, by 4g H2TiO3It is placed in 0.2mol/L nitric acid lithium salt solution, stirs；
B3, the reactant after being sufficiently mixed is placed in water heating kettle, after being put into Muffle furnace 120 DEG C of insulations 10 hours, taken out Filter, washing, obtain Li4Ti5O12
Case study on implementation 3：
C1, by 8 K2TiO3Mixed with 180ml 0.1mol/L hydrochloric acid solutions, carry out ion exchange, mistake after 2.5 hours Filter, obtains compound H2TiO3；
C2, by 3.5g H2TiO3It is placed in 0.2mol/L lithium hydroxide salting liquid, stirs；
C3, the reactant after being sufficiently mixed is placed in water heating kettle, after being put into Muffle furnace 115 DEG C of insulations 11 hours, taken out Filter, washing, obtain Li4Ti5O12
Following table is that case study on implementation obtains Li4Ti5O12Physical parameter.
Batch Product/specific surface area m2/g
Case study on implementation 1 140
Case study on implementation 2 150
Case study on implementation 3 145
The embodiment that the present invention is provided, the present invention obtains bigger serface Li4Ti5O12Specific surface area is big, as negative The lithium excellent electrical property of pole material, with environmental protection, the simple advantage of technique.
Presented above is only the preferred embodiment of the present invention, it is noted that to those skilled in the art, not On the premise of departing from the invention design, various modifications and improvements can be made, these also should be regarded as the protection model of invention Within enclosing.

Claims (3)

1. a kind of preparation method of lithium cell cathode material, it is characterised in that comprise the following steps：
S1, the K by 5-10g2TiO3Mixed with 150-200ml 0.1mol/L acid solutions, carry out ion exchange, mistake after 2-3 hours Filter, obtains compound H2TiO3；
S2, by 3-4g H2TiO3It is placed in 0.2mol/L lithium salt solution, stirs；
S3, the reactant after being sufficiently mixed is placed in water heating kettle, after being put into Muffle furnace 110-120 DEG C of insulation 10-12 hours, Suction filtration, washing, obtain Li4Ti5O12。
2. a kind of preparation method of lithium cell cathode material according to claim 1, it is characterised in that the acid solution is One or more in hydrochloric acid or nitric acid.
3. a kind of preparation method of lithium cell cathode material according to claim 1, it is characterised in that the lithium salt solution For the one or more in lithium hydroxide or lithium nitrate.
CN201710250504.2A 2017-04-17 2017-04-17 A kind of preparation method of lithium cell cathode material Pending CN107055595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710250504.2A CN107055595A (en) 2017-04-17 2017-04-17 A kind of preparation method of lithium cell cathode material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710250504.2A CN107055595A (en) 2017-04-17 2017-04-17 A kind of preparation method of lithium cell cathode material

Publications (1)

Publication Number Publication Date
CN107055595A true CN107055595A (en) 2017-08-18

Family

ID=59601327

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710250504.2A Pending CN107055595A (en) 2017-04-17 2017-04-17 A kind of preparation method of lithium cell cathode material

Country Status (1)

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CN (1) CN107055595A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602988A (en) * 2012-03-14 2012-07-25 常熟钰泰隆摩擦新材料科技有限公司 Method for preparing lithium titanate (Li4Ti5O12) with large specific area
CN103682278A (en) * 2013-12-26 2014-03-26 山东精工电子科技有限公司 Preparation method of nanocarbon coated lithium titanate cathode material
CN104393274A (en) * 2014-11-27 2015-03-04 陕西科技大学 Hollow spherical LiTiO2 material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602988A (en) * 2012-03-14 2012-07-25 常熟钰泰隆摩擦新材料科技有限公司 Method for preparing lithium titanate (Li4Ti5O12) with large specific area
CN103682278A (en) * 2013-12-26 2014-03-26 山东精工电子科技有限公司 Preparation method of nanocarbon coated lithium titanate cathode material
CN104393274A (en) * 2014-11-27 2015-03-04 陕西科技大学 Hollow spherical LiTiO2 material and preparation method thereof

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Application publication date: 20170818