CN107026266A - A kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials - Google Patents

A kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials Download PDF

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Publication number
CN107026266A
CN107026266A CN201710413609.5A CN201710413609A CN107026266A CN 107026266 A CN107026266 A CN 107026266A CN 201710413609 A CN201710413609 A CN 201710413609A CN 107026266 A CN107026266 A CN 107026266A
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cnts
parts
weight
negative pole
lithium ion
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CN107026266B (en
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罗大为
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Shenzhen Polytechnic
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Shenzhen Polytechnic
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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
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • 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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • 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

Abstract

A kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials comprises the following steps：Step 1：0.05 ~ 0.2 parts by weight CNTs is weighed, is dissolved in ethylene glycol, ultrasonic oscillation 1h is completely dispersed；Step 2：Add 0.3 ~ 0.5 parts by weight FeCl3·6H2O, 8 ~ 9 parts by weight potassium acetates and 1.5 ~ 3 parts by weight polyethylene glycol, magnetic agitation 30min；Step 3：It is transferred in polytetrafluoroethyllining lining, isothermal holding is cooled to room temperature, is washed with deionized three times, is dried in vacuo, obtains black powder；Step 4：3 ~ 5 parts by weight polyethylene glycol are weighed, are mixed with black powder, are fitted into planetary ball mill, ball milling 4h；Step 5：The mixture that step 4 is obtained is placed in crucible, under high-purity argon gas protection, is warming up to 10 DEG C/min speed between 550 ~ 650 DEG C, is incubated 6h, slow cooling to room temperature.Negative material capacity height and good cycle that the present invention is obtained, have potential application foreground in the field such as portable electric appts and electric automobile.

Description

A kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials
Technical field
The present invention relates to lithium ion battery negative material field, and in particular to a kind of lithium ion battery CNTs/Fe2O3/ C is multiple Close the preparation method of negative material.CNTs is CNT, Fe2O3That is iron oxide, C is carbon.
Background technology
Lithium ion battery is a kind of renewable green energy resource of environmentally friendly high-performance, is carried with the performance of lithium ion battery Height, just gradually substitutes traditional energy, and increasingly extensive is applied to portable electric appts and the electricity such as mobile phone and tablet personal computer Electrical automobile.With the miniaturization and intellectuality of electronic product, energy density and cycle performance to lithium battery propose higher want Ask.At present, graphite-like carbon material be it is most common being capable of commercialized lithium ion battery negative material, but graphite-based carbon negative pole material The specific capacity of material closely its theoretical capacity（372mAh/g）, existing technology nearly reached its limit, therefore, had Necessity, which is found, a kind of can substitute graphite-based carbon negative material, new type lithium ion with higher energy density and cycle performance Cell negative electrode material.
In recent years, various transition metal oxides, such as Fe2O3、Fe3O4、MnO2And Co3O4Deng with environment-friendly, resource The advantages such as abundant and theoretical capacity height, have used it for the further investigation in terms of cathode of lithium battery.Wherein, Fe2O3Due to theory Capacity is high（1007 mAh·g-1）And it is cheap receive significant attention, but Fe2O3Volume in poorly conductive and charge and discharge process Expansion is big, causes capacity attenuation very fast, strongly limit the application of its industrialization.
In order to solve Fe2O3The problem of negative pole is present, some scholars are from Fe2O3Further investigate, for example, adopt in the preparation of negative pole The Fe with different crystal structure and particle shape is prepared with different synthetic methods2O3Particle.Some scholars are with Fe2O3For Foundational development goes out a series of composites, such as Fe2O3/ CNTs laminated films, Fe2O3/ graphene composite negative pole materials etc. Deng.Make a general survey of domestic and international patent and publish scientific paper and understand, current various Fe2O3The research of base negative pole is that comparison is positive, living Jump, get a good chance of turning into cathode material for high capacity lithium ion battery of new generation.The present invention proposes a kind of brand-new lithium-ion electric Pond CNTs/Fe2O3The preparation method of/C composite negative pole materials, by introducing two kinds of material of CNTs and C layers, suppresses from both direction Fe2O3Volumetric expansion in charge and discharge process, and in view of CNTs and C layers of good electric conductivity, therefore Fe can be solved well2O3 The problem of volumetric expansion is big in poorly conductive and charge and discharge process, high power density and high-energy-density are had concurrently so as to prepare Lithium ion battery negative material.
The content of the invention
The technical problem to be solved in the present invention is：Current lithium cell cathode material has that energy density is not high and cyclicity Can be undesirable the problem of, propose a kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials, improves electrode Cyclical stability, and prepare high-energy-density and the lithium ion battery negative material of high stability, so improve power lithium from The overall performance of sub- battery.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme：A kind of lithium ion battery CNTs/Fe2O3/C The preparation method of composite negative pole material, comprises the following steps：
Step 1：The CNTs of 0.05 ~ 0.2 parts by weight is weighed, is dissolved in a certain amount of ethylene glycol, the consumption of ethylene glycol will be by Determined according to every 0.05 ~ 0.2 g CNTs correspondence 100mL ethylene glycol, then ultrasonic oscillation 1h, until being completely dispersed；
Step 2：Sequentially add the FeCl of 0.3 ~ 0.5 parts by weight3·6H2O, the potassium acetate of 8 ~ 9 parts by weight and 1.5 ~ The polyethylene glycol of 3 parts by weight, magnetic agitation 30min；
Step 3：Solution described in step 2 is transferred in polytetrafluoroethyllining lining, isothermal holding is carried out, is subsequently cooled to room temperature. Then it is washed with deionized three times, is then dried in vacuo, obtains black powder；
Step 4：The polyethylene glycol of 3 ~ 5 parts by weight is weighed, is mixed with the black powder that step 3 is obtained, and loads planetary ball In grinding machine, ball milling 4h；
Step 5：The mixture that step 4 is obtained is placed in crucible, then under high-purity argon gas protection, with 10 DEG C/min speed liters Between warm to 550 ~ 650 DEG C, and 6h is incubated, then slow cooling obtains CNTs/Fe to room temperature2O3/ C composite negative pole materials.
Compared with prior art, the present invention has following beneficial effect：It is of the invention with high theoretical capacity and relatively inexpensive Fe2O3For storage lithium active particle, the CNTs of introducing has two advantages, and one is to make full use of the one-dimensional loose structures of CNTs both to contribute to Lithium ion being embedded in and moving out in charge and discharge process, the advantage of three-dimensional conductive network can be constructed again, is led so as to improve composite Electrically, two be as Fe with CNTs2O3The carrier of active particle, can alleviate Fe from single direction2O3Active particle resets electric mistake Volume Changes in journey, so as to improve the cycle performance of composite.In Fe2O3Active particle surface deposits C layers, and its advantage exists In following 2 points, one is to be C layers and CNTs by Fe2O3Active particle is mixed in centre, can be to Fe2O3Implement from both direction Double protections, further suppress Volume Changes, so as to further improve cycle performance, two, which are C layers, can further improve composite wood The electric conductivity of material.Therefore, the present invention constructs CNTs/Fe by effectively introducing CNTs and C2O3/ C composite negative pole materials, can have Effect solves Fe2O3Particle conductive is poor and charge and discharge process in the problem of there is larger volume change, so as to prepare high power capacity The lithium ion battery negative material of high stability, and then improve the overall performance of power lithium-ion battery.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of the composite negative pole material of embodiment 1.
Fig. 2 is the cycle performance figure of the composite negative pole material of embodiment 1.
Fig. 3 is the AC impedance figure of the composite negative pole material of embodiment 1.
Embodiment
The present invention proposes a kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials, wherein, CNTs is CNT, Fe2O3That is iron oxide, C is carbon, and the preparation method comprises the following steps：
Step 1：The CNTs of 0.05 ~ 0.2 parts by weight is weighed, is dissolved in a certain amount of ethylene glycol, the consumption of ethylene glycol will be by Determined according to every 0.05 ~ 0.2 g CNTs correspondence 100mL ethylene glycol, then ultrasonic oscillation 1h, until being completely dispersed；
Step 2：Sequentially add the FeCl of 0.3 ~ 0.5 parts by weight3·6H2O, the potassium acetate of 8 ~ 9 parts by weight and 1.5 ~ The polyethylene glycol of 3 parts by weight, magnetic agitation 30min；
Step 3：Solution described in step 2 is transferred in polytetrafluoroethyllining lining, isothermal holding is carried out, is subsequently cooled to room temperature. Then it is washed with deionized three times, is then dried in vacuo, obtains black powder；
Step 4：The polyethylene glycol of 3 ~ 5 parts by weight is weighed, is mixed with the black powder that step 3 is obtained, and loads planetary ball In grinding machine, ball milling 4h；
Step 5：The mixture that step 4 is obtained is placed in crucible, then under high-purity argon gas protection, with 10 DEG C/min speed liters Between warm to 550 ~ 650 DEG C, and 6h is incubated, then slow cooling obtains CNTs/Fe to room temperature2O3/ C composite negative pole materials.
Embodiments of the invention 1-6, various parameters are as shown in table 1 below.
The parameter of table 1 not in be the same as Example
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6
CNTs / g 0.05 0.05 0.1 0.1 0.2 0.2
FeCl3·6H2O quality/g 0.3 0.4 0.4 0.5 0.5 0.3
Quality/g of potassium acetate 8 8.5 8.5 9 9 8
（In step 2）Quality/g of polyethylene glycol 1.5 2.0 2.0 3.0 3.0 1.5
（In step 3）Quality/g of polyethylene glycol 3 3 4.0 4 5 5
Temperature/DEG C 550 550 550 650 650 650
Circulation volume/mAhg first-1 932.5 942.4 941.0 943.8 947.9 933.5
Reversible capacity/mAhg after 50 times-1 788.6 798.4 806.9 805.1 803.3 802.1
Adjust, be explained with embodiment 3 present invention is generally directed to technological parameter.
Step 1：0.1 g CNTs are weighed, are dissolved in 100 mL ethylene glycol, then the h of ultrasonic oscillation 1, until dividing completely Dissipate.
Step 2：Sequentially add 0.4 g FeCl3·6H2O, 8.5 g potassium acetates and 2.0 g polyethylene glycol, magnetic agitation 30 min。
Step 3：Then the solution is transferred in polytetrafluoroethyllining lining, carries out isothermal holding, be subsequently cooled to room temperature. Then it is washed with deionized three times, is then dried in vacuo, obtains black powder.
Step 4：4.0 g polyethylene glycol are weighed, are mixed with the black powder that step 3 is obtained, and load planetary ball mill In, then the mixture through ball milling is placed in crucible by ball milling 4h, then under high-purity argon gas protection, with 10 DEG C/min speed It is warming up to 550 DEG C and is incubated 6h, then slow cooling obtains CNTs/Fe to room temperature2O3/ C composite negative pole materials.
Electrochemical property test is carried out to obtained composite negative pole material, as a result shown, in 100 mAg-1Electric current it is close Under degree, discharge capacity is respectively 941.0 mAhg to composite first-1, discharge capacity can still be maintained after 50 circulations 806.9 mAh·g-1, capability retention is 85.7%, with preferable chemical property.

Claims (1)

1. a kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole materials, it is characterised in that including following step Suddenly：
Step 1：The CNTs of 0.05 ~ 0.2 parts by weight is weighed, is dissolved in a certain amount of ethylene glycol, the consumption of ethylene glycol will be by Determined according to every 0.05 ~ 0.2 g CNTs correspondence 100mL ethylene glycol, then ultrasonic oscillation 1h, until being completely dispersed；
Step 2：Sequentially add the FeCl of 0.3 ~ 0.5 parts by weight3·6H2O, the potassium acetate of 8 ~ 9 parts by weight and 1.5 ~ The polyethylene glycol of 3 parts by weight, magnetic agitation 30min；
Step 3：Solution described in step 2 is transferred in polytetrafluoroethyllining lining, isothermal holding is carried out, is subsequently cooled to room temperature, Then it is washed with deionized three times, is then dried in vacuo, obtains black powder；
Step 4：The polyethylene glycol of 3 ~ 5 parts by weight is weighed, is mixed with the black powder that step 3 is obtained, and loads planetary ball In grinding machine, ball milling 4h；
Step 5：The mixture that step 4 is obtained is placed in crucible, then under high-purity argon gas protection, with 10 DEG C/min speed liters Between warm to 550 ~ 650 DEG C, and 6h is incubated, then slow cooling obtains CNTs/Fe to room temperature2O3/ C composite negative pole materials.
CN201710413609.5A 2017-06-05 2017-06-05 A kind of lithium ion battery CNTs/Fe2O3The preparation method of/C composite negative pole material Expired - Fee Related CN107026266B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108933253A (en) * 2018-09-17 2018-12-04 深圳职业技术学院 A kind of lithium ion battery Fe2O3The preparation method of/C negative electrode material
CN110350179A (en) * 2019-07-17 2019-10-18 中国科学院福建物质结构研究所 A kind of Fe2O3Nano carbon composite material and its preparation method and application

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593446A (en) * 2012-02-22 2012-07-18 清华大学 Method for preparing active electrode material of lithium ion battery
CN103022422A (en) * 2012-11-26 2013-04-03 同济大学 Preparation method of active carbon nanotube/ferric oxide lithium ion battery electrode material
CN103151495A (en) * 2013-03-20 2013-06-12 河南师范大学 Method for preparing hybrid negative electrode materials of lithium ion battery
CN103531789A (en) * 2012-12-27 2014-01-22 中国矿业大学 Iron oxide-carbon nanotube ternary composite material and preparation method thereof
CN104505498A (en) * 2014-12-12 2015-04-08 天津大学 Preparation method of ferric oxide/carbon nanotube lithium ion battery anode material
CN106129385A (en) * 2016-09-09 2016-11-16 深圳职业技术学院 A kind of lithium ion battery CA/Fe2o3the preparation method of/PPy composite negative pole material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593446A (en) * 2012-02-22 2012-07-18 清华大学 Method for preparing active electrode material of lithium ion battery
CN103022422A (en) * 2012-11-26 2013-04-03 同济大学 Preparation method of active carbon nanotube/ferric oxide lithium ion battery electrode material
CN103531789A (en) * 2012-12-27 2014-01-22 中国矿业大学 Iron oxide-carbon nanotube ternary composite material and preparation method thereof
CN103151495A (en) * 2013-03-20 2013-06-12 河南师范大学 Method for preparing hybrid negative electrode materials of lithium ion battery
CN104505498A (en) * 2014-12-12 2015-04-08 天津大学 Preparation method of ferric oxide/carbon nanotube lithium ion battery anode material
CN106129385A (en) * 2016-09-09 2016-11-16 深圳职业技术学院 A kind of lithium ion battery CA/Fe2o3the preparation method of/PPy composite negative pole material

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JIANLI CHENG 等: ""CNT@Fe3O4@C Coaxial Nanocables: One-Pot, Additive-Free Synthesis and Remarkable Lithium Storage Behavior"", 《CHEM. EUR. J.》 *
刘晓峰 等: ""3D α-Fe2O3/掺氮石墨烯/碳纳米管复合材料及其储锂性能"", 《无机化学学报》 *
武永鑫 等: ""米粒状α－Fe2O3的制备与电化学性能研究"", 《安徽建筑大学学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108933253A (en) * 2018-09-17 2018-12-04 深圳职业技术学院 A kind of lithium ion battery Fe2O3The preparation method of/C negative electrode material
CN110350179A (en) * 2019-07-17 2019-10-18 中国科学院福建物质结构研究所 A kind of Fe2O3Nano carbon composite material and its preparation method and application

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