CN110600278B - Pinecone-shaped MnO2Ball/foam carbon composite material and preparation method thereof - Google Patents
Pinecone-shaped MnO2Ball/foam carbon composite material and preparation method thereof Download PDFInfo
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- CN110600278B CN110600278B CN201910778665.8A CN201910778665A CN110600278B CN 110600278 B CN110600278 B CN 110600278B CN 201910778665 A CN201910778665 A CN 201910778665A CN 110600278 B CN110600278 B CN 110600278B
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- 239000006260 foam Substances 0.000 title claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 19
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 17
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 11
- 235000011613 Pinus brutia Nutrition 0.000 claims description 11
- 241000018646 Pinus brutia Species 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 8
- 238000003763 carbonization Methods 0.000 abstract description 5
- 239000007772 electrode material Substances 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 4
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 3
- HCITUYXHCZGFEO-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.N=C1NC(=N)NC(=N)N1 HCITUYXHCZGFEO-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 3
- 239000011165 3D composite Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/24—Electrodes 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/46—Metal oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for 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
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Carbon And Carbon Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a super capacitor, in particular to pinecone-shaped MnO2Ball/foam carbon composite material and its preparation method. Firstly, preparing carbon foam through carbonization, and then generating MnO through hydrothermal reaction2The composite material is used as a super capacitor electrode material, shows excellent electrochemical performance, is simple in preparation process, and has great application in the field of super capacitor energy storage.
Description
Technical Field
The invention relates to a super capacitor, in particular to pinecone-shaped MnO2Ball/foam carbon composite material and its preparation method. Firstly, preparing carbon foam through carbonization, and then generating MnO through hydrothermal reaction2The composite material is used as a super capacitor electrode material, shows excellent electrochemical performance, is simple in preparation process, and has great application in the field of super capacitor energy storage.
Background
Rapid development of global economy, depletion of fossil fuels, and aggravation of environmental pollution have prompted an increase in demand for environmentally friendly and efficient energy storage devices. Among the numerous energy storage devices, supercapacitors have been the focus of research due to their long cycle life, high power density and low cost.
Carbon foam is a lightweight porous material with a three-dimensional network morphology composed of amorphous carbon. The carbon foam as a promising electrode material of the super capacitor has the advantages of good chemical stability, low density, large conductivity, low cost and the like. Min and Chen et al studied the effect of Carbon foam precursors on pore structure, and polyurethane foams, as a raw material with low relative molecular mass, narrow relative molecular mass distribution, could form excellent pore structures for pitch-based Carbon foams (] Min ZHenhua, Cao Min, Zhang Shu, et al. Effect of curing on the pore structure of Carbon foams [ J ]. New Carbon Materials, 2007, 22(1): 57-59; Chen Chong, EllioKennel B, Stille Alfred H, et al. Carbon foam derived from gases curing [ J ]. Carbon, 2006, 44(8): 1535. 1543.). These studies establish a solid theoretical and experimental foundation for structural control of carbon foams. The melamine foam is a nano-scale three-dimensional network crosslinking structure soft thermosetting foam plastic prepared by alkaline melamine formaldehyde resin through special process microwave foaming, and the foam carbon is more suitable for being used as an electrode material because the melamine foam is composed of a three-dimensional network open-cell structure and has high open cell rate (the open cell rate is as high as 99.9%). However, the application of carbon foam in the field of supercapacitors is limited due to the low specific capacitance of carbon foam as an electrode material.
Disclosure of Invention
The invention aims to provide a carbon foam material which has stable 3D/3D composite appearance and can solve the problems of foam carbon monomer and MnO2Pinecone-like MnO of low monomer conductivity and specific capacitance2Ball/foam carbon composites. The obtained product is a nano composite material with stable structure and good electrochemical performance.
Pine cone MnO in the present invention2The ball/foam carbon composite has a stable structure. Pine cone MnO2Spherical/foam carbon composite material with uniform size and pine cone shape MnO2The ball is formed by polymerizing smaller balls with the diameter of 10um and the diameter of the foam carbon of 4 um. As shown in fig. 1.
Pine cone MnO in the present invention2Compared with a foam carbon monomer, the electrochemical performance of the ball/foam carbon composite material is remarkably improved. The specific capacity reached 185.6F/g at a scan rate of 20mV/s in a CV cycling test with a voltage ranging from-0.9 to-0.2V and a scan rate of 20 mV/s. As shown in fig. 2.
The technical scheme adopted for realizing the invention is as follows:
pine cone MnO2The method has the characteristics of simple process, low cost and the like, and the obtained three-dimensional pinecone-shaped MnO is2The spheres are uniformly dispersed on the three-dimensional foam carbon, and in a super capacitor, the electrochemical performance is excellent, and the preparation steps are as follows:
(1) Melamine (melamine) foam was cut into 1 cm. times.2 cm pieces and washed three times with deionized water and ethanol. After drying in a vacuum oven, putting the melamine (melamine) foam plastic block into a tube furnace, heating to a set temperature b and preserving heat at a certain heating rate a in a nitrogen atmosphere, then heating to a set temperature d at a certain heating rate c and preserving heat, naturally cooling, and collecting a sample to obtain the carbon foam.
The heating rate a is 5 ℃/min, the temperature b is set to be 400 ℃, and the heat preservation time is 2 h;
the heating rate c is 5 ℃/min, the set temperature d is 700 ℃, and the heat preservation time is 1 h;
the drying refers to drying for 24 hours in a vacuum drying oven at the temperature of 65 ℃.
(2) And (2) uniformly mixing a potassium permanganate solution in deionized water, adding the carbon foam prepared by carbonization in the step (1), continuously stirring and then carrying out ultrasonic treatment, adding a citric acid solution, continuously stirring for a period of time, then transferring the mixture into a reaction kettle, reacting at a certain temperature, naturally cooling to room temperature after the reaction is finished, washing and centrifuging the mixture three times by using deionized water and ethanol respectively, and drying the mixture in a vacuum drying oven. .
The volume ratio of the potassium permanganate solution to the deionized water to the citric acid solution is 1:5: 1.
The concentration of the potassium permanganate solution is 0.05M.
The concentration of the citric acid solution was 0.05M.
The continuous stirring time is 20min, and the ultrasonic time is 20 min.
The stirring was continued for 10 min.
The reaction temperature is 180 ℃, and the reaction time is 7 h.
The drying temperature is 60 ℃ and the drying time is 10 h.
Drawings
FIG. 1 shows a pine cone-shaped MnO2Scanning electron micrographs of the spherical/carbon foam composite.
FIG. 2 shows pine cone MnO2CV curves of the ball/foam carbon composite at different scan rates.
Detailed description of the preferred embodiments
The embodiment of the invention is a preparation method with simple process and relatively low cost, firstly, carbon foam is prepared by a high-temperature method carbonization method with different temperature gradients, and then pinecone-shaped MnO is synthesized by a hydrothermal method2The ball/foam carbon composite material has 3D/3D composite morphology characteristics, and greatly improves the specific capacity and the cycling stability of the material.
The invention relates to pine cone MnO with excellent electrochemical performance2The preparation method of the ball/foam carbon composite material comprises the following steps:
(1) melamine (melamine) foam was cut into 1 cm. times.2 cm pieces and washed three times with deionized water and ethanol. After drying in a vacuum oven, putting the melamine (melamine) foam plastic block into a tube furnace, heating to the set temperature of 400 ℃ at the heating rate of 5 ℃/min in the nitrogen atmosphere, preserving heat for 2h, then heating to the set temperature of 700 ℃ at the heating rate of 5 ℃/min, preserving heat for 1h, naturally cooling, and collecting the sample.
(2) Uniformly mixing 20ml of 0.05M potassium permanganate solution in 100ml of deionized water, adding the carbon foam prepared by carbonization in the step (1), continuously stirring for 20min and then performing ultrasonic treatment for 20min, adding 20ml of 0.05M citric acid solution, continuously stirring for 10min, then transferring the mixture into a reaction kettle, reacting for 7h at 180 ℃, naturally cooling to room temperature after the reaction is finished, washing and centrifuging for three times by using deionized water and ethanol respectively, and drying for 10h at 60 ℃ in a vacuum drying oven.
Claims (3)
1. Pinecone-shaped MnO2Ball/foam carbon composite material, its characterized in that: the composite material is made of pine cone-shaped MnO2A spherical and three-dimensional foam carbon composite material, namely pine cone-shaped MnO2Spherical/foam carbon composite material with uniform size and pine cone shape MnO2The ball is polymerized by smaller balls, the diameter of the ball is 10um, the diameter of the foam carbon is 4um, the ball has the appearance characteristics of 3D/3D, and the ball is three-dimensional pinecone-shaped MnO2The spheres were grown on three-dimensional carbon foam at CV cycles with test voltages ranging from-0.9V to-0.2V and scan rates of 20mV/s to 80mV/sPine cone MnO in Ring test2The ball/foam carbon composite material shows excellent specific capacitance, the specific capacity reaches 185.6F/g at the scanning rate of 20mV/s, and the pine-shaped MnO is2The preparation method of the ball/foam carbon composite material comprises the following steps:
uniformly mixing a potassium permanganate solution in deionized water, adding carbonized foam carbon, continuously stirring and then carrying out ultrasonic treatment, adding a citric acid solution, continuously stirring for a period of time, then transferring the mixture into a reaction kettle, reacting at a certain temperature, naturally cooling to room temperature after the reaction is finished, washing and centrifuging the mixture three times by using deionized water and ethanol respectively, and drying the mixture in a vacuum drying oven; the volume ratio of the potassium permanganate solution to the deionized water to the citric acid solution is 1:5: 1; the concentration of the potassium permanganate solution is 0.05M; the concentration of the citric acid solution is 0.05M; the continuous stirring time is 20min, and the ultrasonic time is 20 min; continuously stirring for 10 min; the reaction temperature is 180 ℃, the reaction time is 7h, the drying temperature is 60 ℃, and the drying time is 10 h.
2. The pinecone-shaped MnO2 sphere/carbon foam composite material of claim 1, wherein the carbon foam is prepared by the following method:
cutting melamine foam plastic into blocks, washing the blocks with deionized water and ethanol for three times, drying the blocks in a vacuum oven, putting the melamine foam plastic blocks into a tubular furnace, heating the blocks to a set temperature b at a certain heating rate a in a nitrogen atmosphere, preserving heat, then heating the blocks to a set temperature d at a certain heating rate c, preserving heat, naturally cooling, and collecting samples to obtain the carbon foam.
3. The pineal MnO2 sphere/carbon foam composite material of claim 2, wherein said blocks are 1cm x 2cm in size; the heating rate a is 5 ℃/min, the temperature b is set to be 400 ℃, and the heat preservation time is 2 h; the heating rate c is 5 ℃/min, the set temperature d is 700 ℃, and the heat preservation time is 1 h; the drying refers to drying for 24 hours in a vacuum drying oven at the temperature of 65 ℃.
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104361996A (en) * | 2014-10-16 | 2015-02-18 | 大连交通大学 | Preparation method for directly generating manganese dioxide on surface of substrate |
CN104600306A (en) * | 2013-10-31 | 2015-05-06 | 青岛泰浩达碳材料有限公司 | Preparation method for nitrogen-graphene composite electrode graphite material |
CN106683890A (en) * | 2016-11-01 | 2017-05-17 | 浙江农林大学 | Carbon/manganese oxide composite material, preparation method thereof and application thereof |
CN107159129A (en) * | 2017-05-22 | 2017-09-15 | 江苏大学 | An one-step preparation method and purposes for a kind of PDMS constructing super-drainages melamine sponge carbon material |
CN108172793A (en) * | 2017-12-27 | 2018-06-15 | 辽宁工程技术大学 | Centrifuge the method for preparing three-dimensional carbon foam/graphene oxide based composites |
CN109216038A (en) * | 2018-09-13 | 2019-01-15 | 天津大学 | Flexible self-supporting ternary metal sulfide/carbon foam composite electrode material for energy storage device |
CN109559898A (en) * | 2018-11-09 | 2019-04-02 | 江苏大学 | A kind of preparation method of the carbon sponge flexible composite of cobalt sulfide iron nanotube load |
CN109671575A (en) * | 2018-11-09 | 2019-04-23 | 江苏大学 | A kind of preparation method of cobalt oxide manganese nano flower-carbon sponge flexible composite |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105513829A (en) * | 2016-02-26 | 2016-04-20 | 济南大学 | Carbon nanotube/carbon fiber composite material and carbon-base/manganese oxide composite electrode material |
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104600306A (en) * | 2013-10-31 | 2015-05-06 | 青岛泰浩达碳材料有限公司 | Preparation method for nitrogen-graphene composite electrode graphite material |
CN104361996A (en) * | 2014-10-16 | 2015-02-18 | 大连交通大学 | Preparation method for directly generating manganese dioxide on surface of substrate |
CN106683890A (en) * | 2016-11-01 | 2017-05-17 | 浙江农林大学 | Carbon/manganese oxide composite material, preparation method thereof and application thereof |
CN107159129A (en) * | 2017-05-22 | 2017-09-15 | 江苏大学 | An one-step preparation method and purposes for a kind of PDMS constructing super-drainages melamine sponge carbon material |
CN108172793A (en) * | 2017-12-27 | 2018-06-15 | 辽宁工程技术大学 | Centrifuge the method for preparing three-dimensional carbon foam/graphene oxide based composites |
CN109216038A (en) * | 2018-09-13 | 2019-01-15 | 天津大学 | Flexible self-supporting ternary metal sulfide/carbon foam composite electrode material for energy storage device |
CN109559898A (en) * | 2018-11-09 | 2019-04-02 | 江苏大学 | A kind of preparation method of the carbon sponge flexible composite of cobalt sulfide iron nanotube load |
CN109671575A (en) * | 2018-11-09 | 2019-04-23 | 江苏大学 | A kind of preparation method of cobalt oxide manganese nano flower-carbon sponge flexible composite |
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