CN105609714A - Positive electrode material added with Cr element of lithium ion battery and preparation method - Google Patents

Positive electrode material added with Cr element of lithium ion battery and preparation method Download PDF

Info

Publication number
CN105609714A
CN105609714A CN201510954365.2A CN201510954365A CN105609714A CN 105609714 A CN105609714 A CN 105609714A CN 201510954365 A CN201510954365 A CN 201510954365A CN 105609714 A CN105609714 A CN 105609714A
Authority
CN
China
Prior art keywords
lithium
ion batteries
anode material
ball
glass tube
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
CN201510954365.2A
Other languages
Chinese (zh)
Inventor
李梦思
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510954365.2A priority Critical patent/CN105609714A/en
Publication of CN105609714A publication Critical patent/CN105609714A/en
Pending legal-status Critical Current

Links

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
    • H01M4/362—Composites
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a positive electrode material added with a Cr element of a lithium ion battery and a preparation method. The positive electrode material added with the Cr element of the lithium ion battery can be obtained according to the following steps of mixing FeC<2>O<4>.2H<2>O, Li2CO3, NH4H2PO4 and Cr2O according to an atom ratio of Li<1-x>FeCr<x>PO4 (0.01<=x<=0.1), placing the mixture in a ball milling tank, adding an appropriate amount of sucrose and steel balls, carrying out ball milling under the protection of acetone, carrying out vacuum sealing on powder after ball milling, placing the powder in a high temperature environment for calcination and carrying out calcination reaction.

Description

A kind of anode material for lithium-ion batteries and preparation technology who adds Cr element
Technical field
The present invention relates to a kind of anode material for lithium-ion batteries and preparation technology thereof, particularly a kind of positive electrode that adds Cr element, belongs to field of batteries.
Background technology
Along with global energy problem becomes growing tension, seek to clean, environmental protection, free of contamination recyclable materials also become the focus that electrochmical power source is paid close attention to. Lithium battery is that a class is negative material, the battery that uses non-aqueous electrolytic solution by lithium metal or lithium alloy. The lithium battery occurring the earliest comes from great inventor Edison, uses following reaction: Li+MnO2=LiMnO2，This reaction is redox reaction. Lithium ion battery is high with its specific energy, operating voltage is high, have extended cycle life, memory-less effect, the advantage such as pollution-free, in portable electronics and new traffic tool, is widely used.
In the composition of lithium ion battery, positive electrode plays decisive role to its chemical property, security performance and even following developing direction. Common anode material for lithium-ion batteries mainly contains cobalt acid lithium and the LiFePO4 of olivine structural etc. of layer structure at present. Wherein, LiCoO2Structure is more stable, and chemical property excellence be the current positive electrode of commercialization comparative maturity, but the overcharge resistant ability of this material is poor, declines rapidly in higher charging voltage specific capacity; LiFePO4 belongs to newer positive electrode, it is safe, cost is lower, but exist the shortcomings such as discharge voltage low (3.4V), tap density are low all to restrict the further application of self, therefore, exploitation composite positive pole has become one of research direction of anode material for lithium-ion batteries.
The present invention, by the preparation process of LiFePO4, adds Cr2O3, then make LiFePO4 doping Cr element by ball-milling technology, high temperature solid-state method, and prepare a kind of composite lithium ion cell composite positive pole, make up the deficiency of LiFePO4. The chemical property performance of the electrode material after the method modification is good, has a good application prospect.
Summary of the invention
The object of this invention is to provide a kind of anode material for lithium-ion batteries and preparation technology of the Cr of interpolation element. This preparation technology comprises the steps:
(1) get appropriate chemical pure FeC2O4?2H2O、Li2CO3、NH4H2PO4And Cr2O3As raw material, according to Li1-xFeCrxPO4The atomic ratio batching of (0.01≤X≤0.1);
(2) the raw material preparing is poured in ball grinder, and added appropriate sucrose and steel ball, under the protection of acetone, carry out ball milling with planetary ball mill;
(3) after ball milling a period of time, alloy powder is taken out and dried;
(4) the powder drying is packed in quartz glass tube, carry out vacuum seal;
(5) glass tube is dropped in water, check it whether to seal completely;
(6) again glass tube is put into high temperature furnace, calcine;
(7) will take out through the powder of calcination processing, smash glass tube after cooling, collect powder and obtain a kind of anode material for lithium-ion batteries of the Cr of interpolation element.
Preferentially, step (1) in, according to Li1-xFeCrxPO4The atomic ratio batching of (0.02≤X≤0.05).
Preferentially, step (2) in, ratio of grinding media to material is 20:1, planetary type ball-milling motor speed control 200-300r/min operation.
Preferentially, step (3) in, the time of carrying out ball milling with planetary ball mill is 2-5h.
Preferentially, step (6) in, high-temperature calcination temperature is 500-800 DEG C, the time is controlled at 10-15h.
The present invention has following advantages and characteristic:
(1) the chemical property performance of modification rear electrode material is good;
(2) preparation technology is simple, and flow process is short;
(3) condition control is simple, is easy to realize industrialization.
Embodiment mono-:
Get appropriate chemical pure FeC2O4?2H2O、Li2CO3、NH4H2PO4And Cr2O3As raw material, according to Li0.99FeCr0.01PO4Atomic ratio batching, taking out the raw mixture preparing of 5g pours in a ball grinder, and add the sucrose of 2g and the steel ball of 100g, pour again acetone soln into, after submergence ball grinder, cover is covered tightly, put into planetary ball mill and carry out ball milling, ball milling speed arranges 200r/min, after ball milling 5h, take out ball grinder, alloy powder is taken out, putting into a smooth container dries, again the powder drying is packed in quartz glass tube, and carry out vacuum seal, the glass tube of good seal is dropped in water, if there is no bubble, represent that sealing is good, again glass tube being put into the high temperature furnace of 500 DEG C calcines, after calcining 15h, take out the cooling anode material for lithium-ion batteries that obtains a kind of Cr of interpolation element.
Embodiment bis-:
Get appropriate chemical pure FeC2O4?2H2O、Li2CO3、NH4H2PO4And Cr2O3As raw material, according to Li0.95FeCr0.05PO4Atomic ratio batching, the raw mixture preparing of 10g is poured in a ball grinder, and add the sucrose of 4g and the steel ball of 200g, pour again acetone soln into, after submergence ball grinder, cover is covered tightly, put into planetary ball mill and carry out ball milling, ball milling speed arranges 300r/min, after ball milling 2h, take out ball grinder, alloy powder is taken out, putting into a smooth container dries, again the powder drying is packed in quartz glass tube, and carry out vacuum seal, the glass tube of good seal is dropped in water, if there is no bubble, represent that sealing is good, again glass tube being put into the high temperature furnace of 800 DEG C calcines, after calcining 10h, take out the cooling anode material for lithium-ion batteries that obtains a kind of Cr of interpolation element.
Embodiment tri-:
Get appropriate chemical pure FeC2O4?2H2O、Li2CO3、NH4H2PO4And Cr2O3As raw material, according to Li0.9FeCr0.1PO4Atomic ratio batching, the raw mixture preparing of 20g is poured in a ball grinder, and add the sucrose of 5g and the steel ball of 400g, pour again acetone soln into, after submergence ball grinder, cover is covered tightly, put into planetary ball mill and carry out ball milling, ball milling speed arranges 300r/min, after ball milling 5h, take out ball grinder, alloy powder is taken out, putting into a smooth container dries, again the powder drying is packed in quartz glass tube, and carry out vacuum seal, the glass tube of good seal is dropped in water, if there is no bubble, represent that sealing is good, again glass tube being put into the high temperature furnace of 800 DEG C calcines, after calcining 15h, take out the cooling anode material for lithium-ion batteries that obtains a kind of Cr of interpolation element.

Claims (5)

1. an anode material for lithium-ion batteries that adds Cr element, is characterized in that, the preparation method of this positive electrode carries out according to the following steps:
(1) get appropriate chemical pure FeC2O4?2H2O、Li2CO3、NH4H2PO4And Cr2O3As raw material, according to Li1-xFeCrxPO4The atomic ratio batching of (0.01≤X≤0.1);
(2) the raw material preparing is poured in ball grinder, and added appropriate sucrose and steel ball, under the protection of acetone, carry out ball milling with planetary ball mill;
(3) after ball milling a period of time, alloy powder is taken out and dried;
(4) the powder drying is packed in quartz glass tube, carry out vacuum seal;
(5) glass tube is dropped in water, check it whether to seal completely;
(6) again glass tube is put into high temperature furnace, calcine;
(7) will take out through the powder of calcination processing, smash glass tube after cooling, collect powder and obtain a kind of anode material for lithium-ion batteries of the Cr of interpolation element.
2. a kind of anode material for lithium-ion batteries that adds Cr element according to claim 1, is characterized in that, step (1) in, according to Li1-xFeCrxPO4The atomic ratio batching of (0.02≤X≤0.05).
3. a kind of anode material for lithium-ion batteries that adds Cr element according to claim 1, is characterized in that, step (2) in, ratio of grinding media to material is 20:1, planetary type ball-milling motor speed control 200-300r/min operation.
4. a kind of anode material for lithium-ion batteries that adds Cr element according to claim 1, is characterized in that, step (3) in, the time of carrying out ball milling with planetary ball mill is 2-5h.
5. a kind of anode material for lithium-ion batteries that adds Cr element according to claim 1, is characterized in that, step (6) in, high-temperature calcination temperature is 500-800 DEG C, the time is controlled at 10-15h.
CN201510954365.2A 2015-12-20 2015-12-20 Positive electrode material added with Cr element of lithium ion battery and preparation method Pending CN105609714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510954365.2A CN105609714A (en) 2015-12-20 2015-12-20 Positive electrode material added with Cr element of lithium ion battery and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510954365.2A CN105609714A (en) 2015-12-20 2015-12-20 Positive electrode material added with Cr element of lithium ion battery and preparation method

Publications (1)

Publication Number Publication Date
CN105609714A true CN105609714A (en) 2016-05-25

Family

ID=55989444

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510954365.2A Pending CN105609714A (en) 2015-12-20 2015-12-20 Positive electrode material added with Cr element of lithium ion battery and preparation method

Country Status (1)

Country Link
CN (1) CN105609714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206275A (en) * 2016-12-17 2018-06-26 赖愉文 A kind of manganic acid lithium electrode material for adulterating erbium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789502A (en) * 2010-03-12 2010-07-28 江苏工业学院 Metal ion doping and carbon coating jointly modified lithium ion battery anode material
CN102180454A (en) * 2011-03-02 2011-09-14 上海大学 Method for preparing lithium iron phosphate with dynamic sintering method and sintering device thereof
CN103165886A (en) * 2012-11-23 2013-06-19 杭州金马能源科技有限公司 Preparation method for lithium iron phosphate materials with high tap density

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789502A (en) * 2010-03-12 2010-07-28 江苏工业学院 Metal ion doping and carbon coating jointly modified lithium ion battery anode material
CN102180454A (en) * 2011-03-02 2011-09-14 上海大学 Method for preparing lithium iron phosphate with dynamic sintering method and sintering device thereof
CN103165886A (en) * 2012-11-23 2013-06-19 杭州金马能源科技有限公司 Preparation method for lithium iron phosphate materials with high tap density

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206275A (en) * 2016-12-17 2018-06-26 赖愉文 A kind of manganic acid lithium electrode material for adulterating erbium

Similar Documents

Publication Publication Date Title
CN107394155B (en) A kind of doping modification method of lithium cobalt oxide cathode material for lithium ion battery
CN102694167B (en) Modified lithium manganate positive pole material and preparation method thereof
CN105576237A (en) Zn-added lithium ion battery cathode material and preparation method thereof
CN105514428A (en) Composite electrode material and preparation technology thereof
CN105591103A (en) Modification process of lithium ion battery cathode material
CN103441239A (en) Synthetic method for nanoscale ternary cathode material
CN103413935A (en) Mo-doped lithium-rich positive electrode material and preparation method thereof
CN106784657A (en) A kind of method that sodium and iron codope prepare High-performance lithium manganate anode material
CN102169991A (en) Positive pole material with nuclear shell structure for lithium battery, and preparation method and application thereof
CN106252645A (en) A kind of sodium-ion battery high nickel content ternary material and preparation method thereof
CN105576202B (en) A kind of rich lithium manganese seleno positive electrode and preparation method thereof
CN104009221A (en) Method for preparing positive electrode material rich in lithium via sol-gel self-propagating combustion method
CN107834054B (en) Preparation method of lithium nickel manganese oxide-graphene composite material for lithium ion battery
CN102623706A (en) Method for improving low-temperature performance of three-element lithium ion battery cathode material
CN105609714A (en) Positive electrode material added with Cr element of lithium ion battery and preparation method
CN104409713A (en) Novel lithium ion battery anode material and preparation method thereof
CN105514426A (en) Process for preparing anode material for compound lithium ion batteries through WO3
CN105514427A (en) Ti doped LiFe(1-x)TixPO4 electrode material
CN107834067A (en) A kind of Cu, Er codope combination electrode material and preparation method thereof
CN103199223A (en) Application of ternary Cu-Cr-Si material as negative electrode material of battery
CN105406045A (en) Composite lithium ion battery cathode material and preparation method thereof
CN103928669B (en) The preparation method of anode material for lithium-ion batteries
CN107359325A (en) The preparation method of carbon coating manganese silicate of lithium composite
CN108232125A (en) It is a kind of to utilize Ce, WO3The modified technique for preparing li-ion electrode materials
CN108206272A (en) A kind of LiMn for adulterating Gd2O4Electrode material and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160525

WD01 Invention patent application deemed withdrawn after publication