CN104124442A - A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material - Google Patents

A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material Download PDF

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CN104124442A
CN104124442A CN201410311647.6A CN201410311647A CN104124442A CN 104124442 A CN104124442 A CN 104124442A CN 201410311647 A CN201410311647 A CN 201410311647A CN 104124442 A CN104124442 A CN 104124442A
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composite material
nanometer
mixed solution
rgo composite
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CN104124442B (en
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陈秀琼
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Haimen Fenglong Ss Pharmaceutical Equipment Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/362Composites
    • H01M4/364Composites as mixtures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/48Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M2004/021Physical characteristics, e.g. porosity, surface area
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Composite Materials (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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  • Compounds Of Iron (AREA)

Abstract

The invention relates to the field of preparation of nanometer composite materials, and particularly relates to a preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material. The preparing method includes steps of: dissolving Fe2SO4-7H2O into a liquid mixture comprising water and glycerol to form a mixed solution A; dispersing graphite oxide into water and performing ultrasonic dispersion to form a solution B; adding the solution B into the mixed solution A, and stirring uniformly to form a mixed solution C; adding the mixed solution C into a high-pressure reactor, putting the high-pressure reactor into a temperature environment having a temperature of 140-180 DEG C, and reacting 8-12 h to obtain a reaction product; and washing the product with aqueous ethanol and water separately for several times, adding the product into a vacuum drying oven having a temperature of 60-100 DEG C, and drying for several hours to obtain the nanometer Fe2O3/rGO composite material. The preparing method has characteristics of cheap and easily available raw materials, low cost, simple and feasible synthesis process, stable product quality and good process repeatability.

Description

A kind of nanometer Fe 2o 3the preparation method of/rGO composite material and application
Technical field
The present invention relates to the preparation field of nano composite material, be specifically related to a kind of nanometer Fe 2o 3the preparation method of/rGO composite material and application.
Background technology
Nanometer Fe 2o 3as a kind of important nano material, because it has unique physicochemical properties, as small-size effect, skin effect, interfacial effect etc., it is all widely used in each technical field.At present, nanometer Fe 2o 3also the negative material that can be used as lithium ion battery is applied in the middle of secondary cell, but the nanometer Fe of existing preparation method's gained 2o 3when discharging and recharging, because it conducts electricity rate variance, the coefficient of cubical expansion is poor, and the lithium ion battery obtaining is poor effect often.
And Graphene is as a kind of good material and nanometer Fe 2o 3compound can addressing the deficiencies of the prior art, and there is the nanometer Fe of specific morphology 2o 3be embedded in Graphene so far there are no report.
 
Summary of the invention
Technical problem to be solved by this invention is to provide kind of a nanometer Fe 2o 3the preparation method of/rGO composite material.
Another object of the present invention is to provide the Fe of above-mentioned preparation method's gained 2o 3/ rGO composite material is as the application of lithium cell cathode material.
Technical problem to be solved by this invention is achieved by the following technical programs:
A kind of nanometer Fe 2o 3the preparation method of/rGO composite material, comprises following steps:
A) by FeSO 47H 2o is dissolved in the mixing material of water and glycerine and forms mixed solution A;
B) graphite oxide is scattered in water and ultrasonic dispersion, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 140 ~ 180 ℃ and reacts after 8 ~ 12 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 60~100 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
Further, the volume ratio of the water in described step a) and glycerine is 3.5 ~ 4:1.
Further, the concentration of described mixed solution A is 0.035 ~ 0.045 mol/L.
Further, in described step b), ultrasonic time is 1.5 ~ 3h.
Further, the concentration of described solution B is 1 ~ 1.5g/L.
The nanometer Fe of described preparation method's gained 2o 3/ rGO composite material is as the application of lithium cell cathode material.
The present invention has following beneficial effect:
(1) preparation method's provided by the invention raw material is cheap and easy to get, and cost is low, and synthesis technique is simple and easy to realize, and constant product quality and process repeatability can be good.
(2) nanometer Fe that prepared by the present invention 2o 3/ rGO composite material size, pattern homogeneous, and Fe 2o 3nanometer sheet is embedded in Graphene uniformly.
(3) this preparation method need not use any surfactant, halide ion etc., nanometer Fe that can be to gained of the present invention 2o 3/ rGO composite material is introduced any impurity.
(4) nanometer Fe of this preparation method gained 2o 3when/rGO composite material is used as lithium cell cathode material, charge-discharge performance is good, even capacity is still up to 429 mAh/g after 10C discharges and recharges 1000 weeks.
 
Accompanying drawing explanation
Fig. 1 is the prepared nanometer Fe of embodiments of the invention 1 2o 3the XRD collection of illustrative plates of/rGO composite material.
Fig. 2 is the prepared nanometer Fe of embodiments of the invention 1 2o 3the SEM figure of/rGO composite material.
Fig. 3 is the prepared nanometer Fe of embodiments of the invention 1 2o 3the TEM figure of/rGO composite material.
Fig. 4 is the prepared nanometer Fe of embodiments of the invention 2 2o 3the SEM figure of/rGO composite material.
Fig. 5 is that embodiments of the invention 5 are with nanometer Fe 2o 3under the lithium battery different multiplying that/rGO composite material is prepared as negative pole, charge and discharge electrograph.
Fig. 6 is that embodiments of the invention 5 are with nanometer Fe 2o 3the cycle graph of the lithium battery that/rGO composite material is prepared as negative pole under 10C discharges and recharges.
 
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail.
Graphite oxide used is all synthetic with prior art in the present invention, for example Hummers method.
Embodiment 1
A) by 1.1gFeSO 47H 2o is dissolved in the mixing material of 80ml water and 20ml glycerine and forms mixed solution A;
B) 0.04 graphite oxide is scattered in 40ml water and ultrasonic dispersion 2h, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 180 ℃ and reacts after 10 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 70 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
Product is accredited as α-Fe through X-ray powder diffraction 2o 3, powder X-ray x ray diffraction result as shown in Figure 1; Material pattern by ESEM, transmission electron microscope as Fig. 2, shown in 3, the α-Fe of nano-sheet as we know from the figure 2o 3evenly be embedded in Graphene.
In the middle of this preparation method, because the graphite oxide surface adding has abundant functional group, can be by electrostatic interaction by Fe 2+absorption forms α-Fe from the teeth outwards 2o 3.And the glycerine adding its not only can induce α-Fe 2o 3form the structure of nanometer sheet, and it contains a large amount of hydroxyls and have reproducibility, graphite oxide can be reduced into Graphene.
Embodiment 2
A) by 1.1gFeSO 47H 2o is dissolved in the mixing material of 70ml water and 20ml glycerine and forms mixed solution A;
B) 0.04 graphite oxide is scattered in 40ml water and ultrasonic dispersion 2h, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 140 ℃ and reacts after 10 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 70 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
Products therefrom is as similar in Fig. 1 through X ray powder diffraction, and material pattern passes through ESEM as shown in Figure 4, as we know from the figure α-the Fe of nano-sheet 2o 3evenly be embedded in Graphene.
Embodiment 3
A) by 1.1gFeSO 47H 2o is dissolved in the mixing material of 80ml water and 20ml glycerine and forms mixed solution A;
B) 0.04 graphite oxide is scattered in 40ml water and ultrasonic dispersion 2.5h, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 150 ℃ and reacts after 12 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 60 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
Products therefrom is identified (with the nanometer Fe of embodiment 1 preparation through X ray powder diffraction, ESEM 2o 3/ rGO composite material is similar) known its be nanometer Fe 2o 3/ rGO composite material.
Embodiment 4
A) by 1.1gFeSO 47H 2o is dissolved in the mixing material of 80ml water and 20ml glycerine and forms mixed solution A;
B) 0.04 graphite oxide is scattered in 40ml water and ultrasonic dispersion 2h, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 160 ℃ and reacts after 9 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 60 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
Products therefrom is identified (with the nanometer Fe of embodiment 1 preparation through X ray powder diffraction, ESEM 2o 3/ rGO composite material is similar) known its be nanometer Fe 2o 3/ rGO composite material.
Embodiment 5
By the nanometer Fe of embodiment 1 ~ 4 gained 2o 3/ rGO composite material is prepared into lithium ion battery (routine techniques that preparation method is this technical field, is not described in detail in the present invention) as negative pole
As can be seen from Figure 5, due to nanometer Fe 2o 3for being embedded in the middle of Graphene, so nanometer Fe of the present invention 2o 3/ rGO composite material has good high rate performance as the negative pole of lithium ion battery; And as can be seen from Figure 6, rice Fe of the present invention 2o 3/ rGO composite material discharges and recharges 1000 weeks rear capacity still up to 429 mAh/g as the negative pole of lithium ion battery under the condition of 10C.
The above embodiment has only expressed embodiments of the present invention; it describes comparatively concrete and detailed; but can not therefore be interpreted as the restriction to the scope of the claims of the present invention; as long as employing is equal to the technical scheme that the form of replacement or equivalent transformation obtains, within all should dropping on protection scope of the present invention.

Claims (6)

1. a nanometer Fe 2o 3the preparation method of/rGO composite material, is characterized in that comprising following steps:
A) by FeSO 47H 2o is dissolved in the mixing material of water and glycerine and forms mixed solution A;
B) graphite oxide is scattered in water and ultrasonic dispersion, forms solution B;
C) solution B is added in mixed solution A, after stirring, forms mixed solution C;
D) described mixed solution C is put into autoclave, described autoclave is placed under the temperature environment of 140 ~ 180 ℃ and reacts after 8 ~ 12 hours and obtain product;
E) product is used respectively absolute ethyl alcohol and water washing for several times, put into 60~100 ℃ of vacuum drying chambers and be dried a few hours, obtain described nanometer Fe 2o 3/ rGO composite material.
2. a kind of nanometer Fe according to claim 1 2o 3the preparation method of/rGO composite material, is characterized in that, the water in described step a) and the volume ratio of glycerine are 3.5 ~ 4:1.
3. a kind of nanometer Fe according to claim 2 2o 3the preparation method of/rGO composite material, is characterized in that, the concentration of described mixed solution A is 0.035 ~ 0.045 mol/L.
4. according to a kind of nanometer Fe according to claim 3 2o 3the preparation method of/rGO composite material, is characterized in that, in described step b), ultrasonic time is 1.5 ~ 3h.
5. according to a kind of nanometer Fe according to claim 4 2o 3the preparation method of/rGO composite material, is characterized in that, the concentration of described solution B is 1 ~ 1.5g/L.
6. the nanometer Fe of preparation method's gained claimed in claim 1 2o 3/ rGO composite material is as the application of lithium cell cathode material.
CN201410311647.6A 2014-07-02 2014-07-02 A kind of nanometer Fe2O3The preparation method of/rGO composite and application Expired - Fee Related CN104124442B (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN104528836A (en) * 2015-01-23 2015-04-22 哈尔滨工业大学 Method for regulating and controlling shape of alpha-Fe2O3/graphene composite material
CN106854389A (en) * 2017-01-11 2017-06-16 山东欧铂新材料有限公司 A kind of micaceous iron oxide/graphene oxide composite material and preparation method thereof
CN107452943A (en) * 2017-07-13 2017-12-08 陕西科技大学 A kind of preparation method of graphene-supported ferriferous oxide self assembly class mulberries structure lithium ion battery negative material
CN109295552A (en) * 2018-09-05 2019-02-01 山东理工大学 A kind of preparation method of di-iron trioxide composite graphite alkene cladding cotton carbon fibre material
CN112481652A (en) * 2020-11-20 2021-03-12 河南大学 Graphene modified CoOOH/Fe2O3Composite electrode material and preparation method thereof
CN114275822A (en) * 2021-12-31 2022-04-05 吕梁学院 Preparation method and application of iron-containing compound modified graphene nano-composite with different morphologies and crystalline phases

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104528836A (en) * 2015-01-23 2015-04-22 哈尔滨工业大学 Method for regulating and controlling shape of alpha-Fe2O3/graphene composite material
CN106854389A (en) * 2017-01-11 2017-06-16 山东欧铂新材料有限公司 A kind of micaceous iron oxide/graphene oxide composite material and preparation method thereof
CN106854389B (en) * 2017-01-11 2020-06-26 山东欧铂新材料有限公司 Mica iron oxide/graphene oxide composite material and preparation method thereof
CN107452943A (en) * 2017-07-13 2017-12-08 陕西科技大学 A kind of preparation method of graphene-supported ferriferous oxide self assembly class mulberries structure lithium ion battery negative material
CN107452943B (en) * 2017-07-13 2020-12-22 陕西科技大学 Preparation method of graphene-loaded iron oxide self-assembled mulberry-like structure lithium ion battery negative electrode material
CN109295552A (en) * 2018-09-05 2019-02-01 山东理工大学 A kind of preparation method of di-iron trioxide composite graphite alkene cladding cotton carbon fibre material
CN112481652A (en) * 2020-11-20 2021-03-12 河南大学 Graphene modified CoOOH/Fe2O3Composite electrode material and preparation method thereof
CN112481652B (en) * 2020-11-20 2022-01-21 河南大学 Graphene modified CoOOH/Fe2O3Composite electrode material and preparation method thereof
CN114275822A (en) * 2021-12-31 2022-04-05 吕梁学院 Preparation method and application of iron-containing compound modified graphene nano-composite with different morphologies and crystalline phases
CN114275822B (en) * 2021-12-31 2023-12-22 吕梁学院 Preparation method and application of iron-containing compound modified graphene nanocomposite with different morphologies and crystalline phases

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