CN110473712A - A kind of derivative nanometer sheet intercalation material of MOF and preparation method and its application - Google Patents

A kind of derivative nanometer sheet intercalation material of MOF and preparation method and its application Download PDF

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CN110473712A
CN110473712A CN201910794590.2A CN201910794590A CN110473712A CN 110473712 A CN110473712 A CN 110473712A CN 201910794590 A CN201910794590 A CN 201910794590A CN 110473712 A CN110473712 A CN 110473712A
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oxide nano
cobaltosic oxide
mof
nanometer sheet
nano piece
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CN110473712B (en
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黄爱生
刘传耀
岳文哲
于华峥
刘嘉琴
陈芳格
郭浩
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East China Normal University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/24Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/46Metal oxides
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/48Conductive polymers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • 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
    • Y02E60/13Energy storage using capacitors

Abstract

The invention discloses a kind of derivative nanometer sheet intercalation material of MOF and preparation method and its application, preparation includes: that cobalt acetate, benzimidazole, methanol and toluene solution is mixed in (1) heating, and ammonium hydroxide is added, obtains two-dimentional MOF nanometer sheet Co2bim4, with ultrapure water and ethanol washing, dry 24 h at 80 DEG C;(2) gained purple powder is warming up to 350 DEG C of air atmospheres with the heating rate of 1 DEG C/min and calcines 3 h, porous cobaltosic oxide nano piece is made;(3) porous cobaltosic oxide nano piece is dispersed in water with polyethyleneimine, after being stirred at room temperature one hour, carry out 24 h of freeze-drying, then 600 ~ 900 DEG C of 4 h of calcining are warming up under argon gas or nitrogen atmosphere with the heating rate of 2 DEG C/min, obtain the derivative i.e. porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel of nanometer sheet intercalation material of MOF;It is prepared into electrode slice and applies to show the up to specific capacitance of 2251F/g and good multiplying power property in supercapacitor, be very potential super capacitor material.

Description

A kind of derivative nanometer sheet intercalation material of MOF and preparation method and its application
Technical field
The present invention relates to the synthetic method of covalent organic frame films, especially a kind of MOF derives nanometer sheet intercalation material and system Preparation Method and its application.
Background technique
With the fast development of global economy, the sharply consumption of petroleum coal, and constantly aggravating circumstances pollution problem Force more efficient, cleaning, sustainable energy are developed to people and proposed with the new technology of energy conversion and storage it is eager Demand.The development and utilization of various green energy resource technologies, the reproducible new energy technology of cleaning, which receives, in recent years widely closes Note, such as electric energy, wind energy, solar energy, tide energy.
Supercapacitor is a kind of novel energy-storing element between conventional capacitive and battery, has use temperature range Wide (- 20 DEG C to 60 DEG C), the advantages that charging time is short, output power is high, the pollution-free and service life is long.Electrode material is that decision is super One of key factor of capacitor performance, the mechanism according to storage electric energy is different at present, and supercapacitor can be divided into electric double layer electricity Container and pseudocapacitors.The electrode material that double layer capacitor uses is mostly porous carbon materials (such as active carbon, carbon aerogels, carbon Nanotube, graphene etc.);Pseudocapacitors are also referred to as Faradic pseudo-capacitor, and generation mechanism is different from double layer capacitor, counterfeit The electrode material of capacitor is mainly metal oxide and conducting polymer.The effective of these materials compound would be possible to obtain electricity The excellent electrode material for super capacitor of chemical property.
Metal organic framework (Metal Organic Frameworks, MOFs) material is a kind of mainly first by oxygen-containing or nitrogen The organic ligand of element is connect with transition metal ions and the multidimensional periodicity mesh skeleton material that is formed.MOFs crystal has three-dimensional Aperture road, higher specific surface area and regular, adjustable pore structure and the features such as hole surface.MOFs material also have with Micropore possesses regularly arranged cellular structure and special nature as mesopore molecular sieve.In addition, to the sintering system of MOFs material Standby porous carbon materials and porous metal oxide material make in the cellular structure abundant for remaining MOFs material to a certain degree This kind of materials are obtained to be widely used in numerous areas such as catalysis, absorption, energy storage.But MOFs material is easy to happen aggregation, and And metal organic framework compound it is more difficult it is evenly dispersed in a solvent, limit metal organic framework compound and conducting polymer Material it is effective compound.
Aerogel material is a kind of form of solid matter, is one of the smallest solid of world's upper density, has porous web The features such as network structure, controllable huge specific surface area and meso-scale.Usual aerogel material is silica aerogel and carbon airsetting Glue;Wherein carbon aerogels are unique conductive aeroges, can be used for the electrode material of double electric layers supercapacitor.But it is double The capacitance of electric layer supercapacitor can not show a candle to fake capacitance supercapacitor, to limit the popularization and application of this material.
Summary of the invention
It is an object of the invention in view of the deficienciess of the prior art, providing a kind of derivative nanometer sheet intercalation material of MOF And preparation method and application, it is with two-dimentional MOF nanometer sheet material Co2bim4For presoma, it is fired to obtain porous cobaltosic oxide Nanometer sheet;It is to realize effectively using electrostatical binding power of the polyethyleneimine (PEI) to porous cobaltosic oxide nano sheet material Intercalation synthesis, then be fired to obtain porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel;Porous four oxidation three of gained Cobalt nanometer sheet-nitrogen-doped carbon composite aerogel can express excellent chemical property and cyclical stability, and the preparation being related to Method is simple, easily-controllable, is suitble to promote and apply.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of preparation method of the derivative nanometer sheet intercalation material of MOF, first with two-dimentional MOF nanometer sheet material Co2bim4It is preceding Body is driven, is fired to obtain porous cobaltosic oxide nano piece;Using polyethyleneimine (PEI) to porous cobaltosic oxide nano piece The electrostatical binding power of material is to realize effectively intercalation synthesis, then be fired to obtain porous cobaltosic oxide nano piece-N doping Carbon composite aerogel;The following steps are included:
Step 1: synthesis two dimension MOF nanometer sheet material Co2bim4
Cobalt acetate and benzimidazole (bim) are added in toluene and methanol mixed solvent, add ammonium hydroxide as auxiliary agent; By configured solution ultrasound 5 minutes, 60 DEG C of heating stirrings were reacted 12 hours, wherein the ratio between amount of substance is cobalt acetate: benzo Imidazoles: toluene: methanol: ammonium hydroxide=0.25: 1~1.2: 47~50: 17~20: 4~10;
Step 2: preparing porous cobaltosic oxide nano piece
By Co2bim4It is placed in the crucible of capping, is warming up to 350~400 in Muffle furnace with the heating rate of 2.3 DEG C/min DEG C, 4~6h is kept, resulting black powder is porous cobaltosic oxide nano piece after natural cooling;
Step 3: the preparation of porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel
Porous cobaltosic oxide nano piece and polyethyleneimine (PEI, molecular weight 600) are dispersed in water, ultrasonic 1h After be put into freeze drier freeze it is drying for one day, be then warming up under argon gas or nitrogen atmosphere with the heating rate of 2 DEG C/min The derivative nanometer of the i.e. described MOF of porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel is made in 600~900 DEG C of calcining 4h Piece intercalation material;Wherein, the ratio between amount of substance is porous cobaltosic oxide nano piece: polyethyleneimine: water=2.5: 0.1~ 0.15: 500~520.
A kind of derivative nanometer sheet intercalation material of MOF made from the above method.
A kind of application of the derivative nanometer sheet intercalation material of the MOF as electrode material for super capacitor.
The application, comprising the following specific steps
Step 1: the preparation of composite aerogel-foam nickel electrode piece
The pretreatment of nickel foam: the rectangle that nickel foam is cut into, ultrasound impregnates 15min first in 6M HCL, then 15min is cleaned with deionized water and EtOH Sonicate respectively, is dried overnight in 60 DEG C of baking oven.By porous cobaltosic oxide nano Piece-nitrogen-doped carbon composite aerogel powder sample, acetylene black and Kynoar (PVDF) are put with mass ratio for 8: 1: 1 together Enter in mortar, be added dropwise into mortar and analyze pure N-Methyl pyrrolidone (NMP), grinding becomes slurry, slurry drop coating is existed In the area of processed nickel foam 2/3, places 12 hours and dry at 60 DEG C, 10MPa is finally forced on tablet press machine, is obtained To the composite aerogel-foam nickel electrode piece;
Step 2: composite aerogel-foam nickel electrode piece that step 1 obtains is used for electrode of super capacitor.
The composite aerogel-foam nickel electrode piece has the specific capacitance of 2251F/g, has specific capacity height, cycle performance It well, is a kind of excellent energy storage material the features such as stable structure.
Beneficial effects of the present invention:
MOF derives nanometer sheet intercalation material.
The derivative nanometer sheet intercalation material of MOF prepared by the present invention, i.e., porous cobaltosic oxide nano piece-nitrogen-doped carbon are compound Aeroge effectively realizes porous four oxygen using the electrostatic force between polyethyleneimine and porous cobaltosic oxide nano piece It is high molecular sufficiently compound with polyethyleneimine to change three cobalt nanometer sheets.
MOF prepared by the present invention derives nanometer sheet intercalation material, i.e., porous cobaltosic oxide nano piece-nitrogen-doped carbon is multiple Aeroge is closed as the application of electrode material for super capacitor and combines double electric layers supercapacitor and fake capacitance super capacitor The advantage of both devices, and can effectively promote the electrochemical cycle stability of polypyrrole;Furthermore present invention gained composite material is applicable in In fields such as supercapacitors.
Detailed description of the invention
Fig. 1 be embodiment 1 made from porous cobaltosic oxide nano piece-nitrogen-doped carbon aerogel composite SEM and TEM photo.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1
(1) 0.115g cobalt acetate and 4.4g benzimidazole (bim) are added to 85ml analysis pure toluene and 75ml analysis is pure In methanol mixed solvent, adds 15ml and analyze pure ammonium hydroxide as auxiliary agent.By above-mentioned configured solution ultrasound 5 minutes, 60 DEG C Heating stirring is reacted 12 hours, after reaction, is cooled to room temperature, and uses distilled water and ethanol washing respectively;
(2) by the Co of 100mg2bim4It is placed in the crucible of capping, is heated up in Muffle furnace with the heating rate of 2.3 DEG C/min To 350 DEG C, 4h is kept, resulting black powder is porous cobaltosic oxide nano piece after natural cooling;
(3) by the polyethyleneimine (PEI, molecular weight 600) of the porous cobaltosic oxide nano piece of 50mg and 50mg point Be dispersed in the deionized water of 1g, be put into after ultrasonic 1h freeze drier freeze it is drying for one day, then existed with the heating rate of 2 DEG C/min It is warming up to 800 DEG C of calcining 4h under argon gas or nitrogen atmosphere, hole cobaltosic oxide nano piece-compound airsetting of nitrogen-doped carbon is made Glue.SEM and TEM photo is as shown in Figure 1, a is SEM figure in figure;B is TEM figure;As can be seen from the figure gained hole cobaltosic oxide There is nanometer sheet-nitrogen-doped carbon composite aerogel fluffy structure hole cobaltosic oxide nano piece to be evenly distributed on porous N doping Carbon aerogels surface.
(4) nickel foam pre-processes: the rectangle that nickel foam is cut into, ultrasound impregnates 15min first in 6M HCL, then 15min is cleaned with deionized water and EtOH Sonicate respectively, is dried overnight in 60 DEG C of baking oven.Powder prepared by step (3) Sample, acetylene black and Kynoar (PVDF) are that 8:1:1 is put into togerther in mortar with mass ratio, are added dropwise and analyze pure N- methyl pyrrole Pyrrolidone (NMP), grinding become slurry, in 2/3 area, it are placed 12 hours at 60 DEG C in nickel foam with drop coating Drying, finally by porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel/nickel foam thin slice of drying on tablet press machine It is forced into 10MPa, obtains required electrode slice.
2~embodiment of embodiment 6
Each embodiment is same as Example 1, and difference is as shown in table 1:
Table 1
Comparative example 1
By step (3) removal in embodiment 1, remaining is same as Example 1, finished product.
Performance detection
By porous cobaltosic oxide nano sheet material prepared by comparative example 1 and porous cobaltosic oxide prepared by embodiment 1 Nanometer sheet-nitrogen-doped carbon aerogel composite is used separately as electrode material for super capacitor, the specific capacitance value measured such as 2 institute of table Show.
It is compared by above data, improved porous cobaltosic oxide nano piece-nitrogen-doped carbon aerogel composite Preparation method effectively raises the specific capacitance of the capacitor of product, and serving as electrode material for super capacitor has extensively Application prospect.
Although above-described embodiment is not directed to the selection in relation to parameter disclosed full scope, in other implementation In example, the present invention can realize in the full scope of disclosed related parameter.In addition, the present invention is also not limited to above-mentioned act Example, those skilled in the art's made variation, increase and decrease or replacement within the essential scope of the present invention, should also belong to In protection scope of the present invention.

Claims (5)

1. a kind of preparation method of the derivative nanometer sheet intercalation material of MOF, which is characterized in that this method comprising the following specific steps
Step 1: synthesis two dimension MOF nanometer sheet material Co2bim4
Cobalt acetate and benzimidazole are added in toluene and methanol mixed solvent, add ammonium hydroxide as auxiliary agent;It will configure Solution ultrasound 5 minutes, 60 DEG C of heating stirrings are reacted 12 hours, wherein the ratio between amount of substance is cobalt acetate: benzimidazole: first Benzene: methanol: ammonium hydroxide=0.25: 1~1.2: 47~50: 17 ~ 20: 4 ~ 10;
Step 2: preparing porous cobaltosic oxide nano piece
By Co2bim4It is placed in the crucible of capping, 350 ~ 400 DEG C is warming up in Muffle furnace with the heating rate of 2.3 DEG C/min, protects 4 ~ 6 h are held, resulting black powder is porous cobaltosic oxide nano piece after natural cooling;
Step 3: the preparation of porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel
By porous cobaltosic oxide nano piece and polyethyleneimine PEI, molecular weight 600 is dispersed in water, and is put after 1 h of ultrasound Enter freeze drier and freezes drying for one day, then it is warming up to 600 under argon gas or nitrogen atmosphere with the heating rate of 2 DEG C/min ~ 900 DEG C of 4 h of calcining are made the derivative nanometer sheet of the i.e. described MOF of porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel and insert Layer material;Wherein, the ratio between amount of substance is porous cobaltosic oxide nano piece: polyethyleneimine: water=2.5: 0.1~0.15: 500~520。
2. MOF made from a kind of claim 1 the method derives nanometer sheet intercalation material.
3. a kind of application of the derivative nanometer sheet intercalation material of MOF described in claim 2 as electrode material for super capacitor.
4. application according to claim 3, which is characterized in that comprising the following specific steps
Step 1: the preparation of composite aerogel-foam nickel electrode piece
The pretreatment of nickel foam: the rectangle that nickel foam is cut into, ultrasound impregnates 15min first in 6 M HCL, then distinguishes 15 min are cleaned with deionized water and EtOH Sonicate, are dried overnight in 60 DEG C of baking oven;
By powder sample, acetylene black and the Kynoar of porous cobaltosic oxide nano piece-nitrogen-doped carbon composite aerogel PVDF is put into togerther in mortar with mass ratio for 8: 1: 1, is added dropwise into mortar and is analyzed pure N-Methyl pyrrolidone NMP, and grinding becomes Pulp object is placed 12 hours at 60 DEG C and is dried, finally by slurry drop coating in the area of processed nickel foam 2/3 It is forced into 10 MPa on tablet press machine, obtains the composite aerogel-foam nickel electrode piece;
Step 2: composite aerogel-foam nickel electrode piece that step 1 obtains is used for electrode of super capacitor.
5. application according to claim 4, which is characterized in that the composite aerogel-foam nickel electrode piece has The specific capacitance of 2251F/g.
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CN111477471A (en) * 2020-04-25 2020-07-31 榆林学院 Preparation method of coal tar-based electrode material
CN111569929A (en) * 2020-05-18 2020-08-25 石河子大学 Co-MOF derived cobalt/nitrogen/carbon composite material and preparation method thereof
CN111995760A (en) * 2020-07-17 2020-11-27 扬州大学 Cobalt-metal organic framework nanosheet and preparation method and application thereof
CN113380557A (en) * 2021-06-01 2021-09-10 华东师范大学 Polyaniline composite trimetal electrode material, preparation method and application thereof

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CN105826088A (en) * 2016-05-10 2016-08-03 复旦大学 Carbon aerogel/manganese dioxide combined electrode material with multi-level structure, and preparation method thereof

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CN111477471A (en) * 2020-04-25 2020-07-31 榆林学院 Preparation method of coal tar-based electrode material
CN111569929A (en) * 2020-05-18 2020-08-25 石河子大学 Co-MOF derived cobalt/nitrogen/carbon composite material and preparation method thereof
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CN113380557A (en) * 2021-06-01 2021-09-10 华东师范大学 Polyaniline composite trimetal electrode material, preparation method and application thereof

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