CN106328940A - Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries - Google Patents

Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries Download PDF

Info

Publication number
CN106328940A
CN106328940A CN201610835408.XA CN201610835408A CN106328940A CN 106328940 A CN106328940 A CN 106328940A CN 201610835408 A CN201610835408 A CN 201610835408A CN 106328940 A CN106328940 A CN 106328940A
Authority
CN
China
Prior art keywords
carbon nano
conductive paper
lithium ion
tubes
slurry
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
CN201610835408.XA
Other languages
Chinese (zh)
Inventor
孙晓刚
陈珑
邱志文
蔡满园
刘珍红
王杰
陈玮
李旭
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.)
Nanchang University
Original Assignee
Nanchang University
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 Nanchang University filed Critical Nanchang University
Priority to CN201610835408.XA priority Critical patent/CN106328940A/en
Publication of CN106328940A publication Critical patent/CN106328940A/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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries. The method includes steps of (1), shearing and dispersing paper fibers with certain weights and carbon nano-tubes with certain weights, then carrying out suction filtration on uniformly dispersed slurry and drying the slurry to obtain required conductive paper with the carbon nano-tubes; (2), coating a layer of lithium iron phosphate anode slurry with an appropriate thickness on the conductive paper with the carbon nano-tubes, drying the lithium iron phosphate anode slurry and the conductive paper with the carbon nano-tubes and preparing anode pieces with the conductive paper with the carbon nano-tubes; (3), carbonizing and treating the anode pieces at the temperatures of 1200-1600 DEG C under vacuum conditions, cooling the anode pieces and then fetching the anode pieces. The method has the advantages that the carbonized conductive paper with the carbon nano-tubes is used as a current collector, lithium ion phosphate is used as an active material, so that the lithium ion batteries can be prepared, the affinity and interface structures of the active material and the current collector can be improved, and the performance of the traditional lithium iron phosphate batteries can be enhanced.

Description

The preparation method of high hole carbon back collector anode slice of lithium ion battery
Technical field
The present invention is belonging to technical field of lithium ion, is specifically related to LiFePO4 and makees positive electrode active materials and high hole Degree carbon nano tube conductive paper makees the lithium ion battery of collector.
Background technology
In current resource, energy poor, in the case of environmental pollution increases the weight of, the challenge for existence that facing mankind is severe.People Wish to find cleaning, renewable, the secondary resource of resource-conserving, make human society keep sustainable development.Lithium ion battery Because running voltage is high, energy density is big, self-discharge rate is little, have extended cycle life, the advantage such as environmental protection and become people and try to be the first probably The focus of rear research, is also widely recognized as by people simultaneously, is increasingly becoming the development trend of secondary cell.LiFePO4 is because having ratio Capacity is high, security performance is good, cycle performance is excellent, outstanding feature environmentally friendly, abundant raw material source becomes lithium-ion electric Pond positive electrode one of material with development potentiality most, obtains development and application widely in electric energy field.
But the research of lithium ion battery is the most only focused on research and development by people can improve the specific capacity of battery, work Both positive and negative polarity active material, electrolyte and the barrier film of the performance such as voltage, energy density, and have ignored the collector shadow to battery performance Ringing, what traditional both positive and negative polarity collector used is aluminium foil and Copper Foil respectively, but the performance of battery will not be had by both materials More raising.It is good that carbon nano tube conductive paper has absorption property, inhales the features such as electrolyte ability is strong, compares Copper Foil, aluminium foil collection Fluid, its surface texture can effectively ensure that the close contact between active material and carbon nano tube conductive paper collector, reduces interface Resistance, increases electronics conduction pathway.These features make carbon nano tube conductive paper can improve the performance of lithium ion battery and generation The developing direction of following collector is become for Copper Foil, aluminium foil.
Summary of the invention
The purpose of the present invention is to propose to the preparation method of high hole carbon back collector anode slice of lithium ion battery.
The present invention is achieved by the following technical solutions.
The preparation method of a kind of high hole carbon back collector anode slice of lithium ion battery of the present invention, including following Step.
(1) by paper fiber and the cutting carbon nanotube dispersion of certain mass, subsequently finely dispersed slurry is carried out sucking filtration, Required carbon nano tube conductive paper is obtained after drying.
(2) on carbon nano tube conductive paper, coat the lithium iron phosphate cathode slurry that a layer thickness is suitable, dry and make carbon Nanotube conductive paper anode pole piece.
(3) by above-mentioned electrode plates 1200 DEG C of-1600 DEG C of carbonization treatment 2-24h under vacuum, take out after cooling, To high hole carbon back collector anode slice of lithium ion battery.
Carbon nano tube conductive paper anode pole piece obtained by the present invention can as anode slice of lithium ion battery, and press lithium from The structural order of sub-battery is assembled in battery.
The novel point of the present invention is that, using carbonization carbon nano tube conductive paper as collector, LiFePO4 is active material Prepare lithium ion battery thus improve active material and the affinity of collector and interfacial structure, improve tradition LiFePO4 electricity The performance in pond.
Detailed description of the invention
The present invention will be described further by specific examples below.
Embodiment 1.
(1) preparation of carbon nano tube conductive paper: weigh CNT and the paper fiber of 0.5 g respectively, first by CNT With paper fiber high speed shear 30min respectively, another rising shears 1 h so that it is be uniformly dispersed, and vacuum filtration post-drying obtains carbon and receives Mitron conductive paper.
(2) preparation of LiFePO4 slurry: the ratio in 90: 4:6 weigh respectively iron phosphate powder, CNT, The mixture (gross weight 3g) of Kynoar (PVDF), in 16 ml N-methyl-pyrrole network alkanone (NMP), 4000r/min shears Dispersion 60min, makes LiFePO4 and CNT mix homogeneously, obtains slurry.
(3) on carbon nano tube conductive paper, use the coating of the LiFePO4 slurry of coating machine coating thickness 80 ~ 120 um, Suitable battery pole piece it is sliced into after drying.
(4) by above-mentioned electrode plates 1200 DEG C of carbonization treatment 2h under vacuum, take out after cooling.
Embodiment 2.
(1) preparation of carbon nano tube conductive paper: weigh CNT and the paper fiber of 0.5g respectively, first by CNT and Paper fiber high speed shear 30 min respectively, shears 1 h, makes to be uniformly dispersed for another, and vacuum filtration post-drying obtains carbon nanometer Pipe conductive paper.
(2) preparation of LiFePO4 slurry: weighed iron phosphate powder, CNT respectively in the ratio of 93:3:4, gathered Vinylidene (PVDF) mixture (gross weight 3g), in 16ml N-methyl-pyrrole network alkanone (NMP), 4000r/min shears dispersion 60min, makes LiFePO4 and CNT mixing be uniformly dispersed, obtains slurry.
(3) on carbon nano tube conductive paper, finally use the LiFePO4 slurry of coating machine coating thickness 80 ~ 120um Coating, is sliced into suitable battery pole piece after drying.
(4) by above-mentioned electrode plates 1400 DEG C of carbonization treatment 6h under vacuum, take out after cooling.
Embodiment 3.
(1) preparation of carbon nano tube conductive paper: weigh CNT and the paper fiber of 0.5g respectively, first by CNT With paper fiber high speed shear 30min respectively, another shearing 1h that rises makes to be uniformly dispersed, and vacuum filtration post-drying obtains CNT Conductive paper.
(2) preparation of LiFePO4 slurry: weighed iron phosphate powder, CNT respectively in the ratio of 95:3:2, gathered The mixture (gross weight 3g) of vinylidene (PVDF), in 16mlN-methyl-pyrrole network alkanone (NMP), 4000r/min shears dispersion 60min, makes LiFePO4 and CNT mix homogeneously, obtains slurry.
(3) on carbon nano tube conductive paper, finally use the LiFePO4 slurry of coating machine coating thickness 80 ~ 120um Coating, is sliced into suitable battery pole piece after drying.
(4) by above-mentioned electrode plates 1600 DEG C of carbonization treatment 20h under vacuum, take out after cooling.

Claims (1)

  1. The preparation method of the highest hole carbon back collector anode slice of lithium ion battery, is characterized in that comprising the following steps:
    (1) by paper fiber and the cutting carbon nanotube dispersion of certain mass, subsequently finely dispersed slurry is carried out sucking filtration, dry After obtain required carbon nano tube conductive paper；
    (2) on carbon nano tube conductive paper, coat the lithium iron phosphate cathode slurry that a layer thickness is suitable, dry and make carbon nanometer Pipe conductive paper anode pole piece；
    (3) by above-mentioned electrode plates 1200 DEG C of-1600 DEG C of carbonization treatment 2-24h under vacuum, take out after cooling.
CN201610835408.XA 2016-09-21 2016-09-21 Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries Pending CN106328940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610835408.XA CN106328940A (en) 2016-09-21 2016-09-21 Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610835408.XA CN106328940A (en) 2016-09-21 2016-09-21 Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries

Publications (1)

Publication Number Publication Date
CN106328940A true CN106328940A (en) 2017-01-11

Family

ID=57787578

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610835408.XA Pending CN106328940A (en) 2016-09-21 2016-09-21 Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries

Country Status (1)

Country Link
CN (1) CN106328940A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493400A (en) * 2018-04-26 2018-09-04 广东永邦新能源股份有限公司 A kind of high-voltage anode piece and preparation method thereof
CN109004235A (en) * 2018-08-02 2018-12-14 陕西科技大学 Carbon-based three-dimensional order affluxion body in lithium ion batteries and preparation method thereof and lithium ion battery
CN110600693A (en) * 2019-08-26 2019-12-20 福建翔丰华新能源材料有限公司 High-capacity lithium ion battery silicon negative electrode material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120045691A1 (en) * 2004-06-02 2012-02-23 Mystic Technology Partners Carbon nanotube based electrode materials for high performance batteries
CN102610786A (en) * 2011-12-20 2012-07-25 南昌大学 Preparation method of ternary composite paper battery positive electrode
CN104810504A (en) * 2014-01-24 2015-07-29 中国科学院金属研究所 Flexible graphene current collector and active material integrated electrode pole piece and preparation method thereof
CN105449167A (en) * 2015-12-25 2016-03-30 南昌大学 Preparation method of lithium ion battery cathode pole piece taking carbon nano tube paper as current collector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120045691A1 (en) * 2004-06-02 2012-02-23 Mystic Technology Partners Carbon nanotube based electrode materials for high performance batteries
CN102610786A (en) * 2011-12-20 2012-07-25 南昌大学 Preparation method of ternary composite paper battery positive electrode
CN104810504A (en) * 2014-01-24 2015-07-29 中国科学院金属研究所 Flexible graphene current collector and active material integrated electrode pole piece and preparation method thereof
CN105449167A (en) * 2015-12-25 2016-03-30 南昌大学 Preparation method of lithium ion battery cathode pole piece taking carbon nano tube paper as current collector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493400A (en) * 2018-04-26 2018-09-04 广东永邦新能源股份有限公司 A kind of high-voltage anode piece and preparation method thereof
CN108493400B (en) * 2018-04-26 2020-07-24 广东永邦新能源股份有限公司 High-voltage positive plate and preparation method thereof
CN109004235A (en) * 2018-08-02 2018-12-14 陕西科技大学 Carbon-based three-dimensional order affluxion body in lithium ion batteries and preparation method thereof and lithium ion battery
CN109004235B (en) * 2018-08-02 2020-04-21 陕西科技大学 Carbon-based three-dimensional ordered lithium ion battery current collector, preparation method thereof and lithium ion battery
CN110600693A (en) * 2019-08-26 2019-12-20 福建翔丰华新能源材料有限公司 High-capacity lithium ion battery silicon negative electrode material and preparation method thereof

Similar Documents

Publication Publication Date Title
KR102577441B1 (en) Modified solid electrolyte membrane and its manufacturing method and lithium battery
CN103236560B (en) A kind of sulfur/carbon composite anode material of lithium-sulfur cell and its preparation method and application
CN103633293B (en) Lithium ion battery negative electrode piece using hard carbon and soft carbon as active materials and lithium ion battery
CN103413966A (en) Lithium ion battery having membrane electrode structure, and making method thereof
CN108658119B (en) Method for preparing copper sulfide nanosheet and compound thereof by low-temperature vulcanization technology and application
CN104600315A (en) Flake MoS2/graphene composite aerogel and preparation method thereof
CN104409703A (en) Preparation method for molybdenum disulfide/nitrogen-doped graphene three-dimensional composite material and application of molybdenum disulfide/nitrogen-doped graphene three-dimensional composite material
CN104577012A (en) Rate cycling improved lithium iron phosphate battery and preparation method thereof
CN103500822B (en) Preparation method of carbon-modified nano Li4Ti5O12-porous graphene composite electrode material
CN103346302A (en) Lithium battery silicon-carbon nanotube composite cathode material as well as preparation method and application thereof
CN109524643A (en) A kind of preparation method and applications of multilayer carbon shell core-shell structure silicon based anode material
CN108899479A (en) A kind of method of modifying improving lithium iron phosphate positive material chemical property
CN108682813A (en) A kind of preparation method and application of Si-C composite material
CN102324507A (en) Preparation method for lithium-sulfur battery composite anode material
CN109802094A (en) A kind of low temperature ferric phosphate lithium cell and preparation method thereof
CN105226274A (en) A kind of preparation method of LiFePO4/graphene composite material of graphene uniform dispersion
CN103633333A (en) Nitrogen-doped or boron-doped graphene/aluminum foil composite current collector, preparation method thereof, electrochemical electrode and electrochemical cell or capacitor
CN109546103A (en) A kind of electrode material and its preparation method and application of binder as carbon precursor
CN103632845A (en) Graphene/organic thin film composite current collector, preparation method thereof, electrochemical electrode and electrochemical battery or capacitor
CN108134055A (en) The synthetic method of sodium titanate nanobelt/titanium carbide nanometer sheet compound
CN104701496A (en) SnO2/CMK-3 nanometer composite lithium-ion battery negative electrode material preparation method
CN106328940A (en) Method for preparing high-porosity carbon-based current collector anode pieces of lithium ion batteries
CN104752682B (en) A kind of sulphur of lithium-sulfur cell/carbon composite anode material preparation method
CN106384824A (en) Preparation method and application of spherical carbon electrode material
CN106298260B (en) A kind of preparation method of fluorinated carbon material super-capacitor pole piece

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170111