CN109321211B - Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof - Google Patents
Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof Download PDFInfo
- Publication number
- CN109321211B CN109321211B CN201811223926.1A CN201811223926A CN109321211B CN 109321211 B CN109321211 B CN 109321211B CN 201811223926 A CN201811223926 A CN 201811223926A CN 109321211 B CN109321211 B CN 109321211B
- Authority
- CN
- China
- Prior art keywords
- graphitized
- porous carbon
- aluminum
- hierarchical porous
- energy storage
- 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.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/205—Preparation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a graphitized hierarchical porous carbon composite phase change energy storage material and a preparation method thereof, wherein a carbon precursor with low price, a graphitized catalyst and a pore-forming agent are used as raw materials, and the graphitized hierarchical porous carbon is prepared by ball-milling, mixing, carbonization and other processes; and compounding the prepared graphitized hierarchical porous carbon serving as a support material with a phase-change material to obtain the graphitized hierarchical porous carbon composite phase-change energy storage material. The porous carbon material prepared by the invention has a three-dimensional intercommunicated hierarchical porous network structure and high graphitization degree, is beneficial to shaping and packaging of a phase-change material, and can provide a good heat conduction network channel and enhance the heat transfer performance; and the porous carbon material is prepared by adopting the additive containing the metal salt, and part of metal substances can be reduced by utilizing a carbothermic reduction reaction in the preparation process so as to further increase the heat-conducting property of the material, thereby obtaining the composite phase-change energy storage material with high heat-conducting property, good chemical stability and heat storage effect.
Description
Technical Field
The invention belongs to the technical field of carbon materials, and particularly relates to a graphitized graded porous carbon composite phase change energy storage material and a preparation method thereof.
Background
In the modern day of rapid industrial development, energy has become a major driving force for the development of socioeconomic development. However, the current energy structure still mainly uses non-renewable energy such as fossil fuel, and due to the problems of limited reserves, over-development and the like, the exhaustion of energy and environmental pollution become important factors restricting social development, so that the search for developing clean and efficient renewable new energy and improving the utilization rate of energy become the current urgent tasks. The phase-change material is low in price and high in energy density, and can absorb or release a large amount of heat energy in the phase-change process, so that the problems of energy shortage and energy supply and demand mismatch can be well solved, the utilization rate of energy is improved, the phase-change material becomes a current research hotspot, and the phase-change material has wide application prospects in the fields of air conditioner energy conservation, building materials, solar heat utilization, aerospace, electronic equipment heat dissipation and the like.
The traditional phase change materials are mainly divided into inorganic phase change materials and organic phase change materials, wherein the inorganic phase change materials have the advantages of high heat conductivity coefficient, large energy storage density and the like, but have the defects of high corrosivity, large supercooling degree, easiness in phase separation and the like; although the organic phase-change material has the advantages of low price, stable chemical performance, small corrosivity, basically no supercooling and phase separation phenomena and the like, the organic phase-change material has the defects of low heat conductivity coefficient, easy leakage and the like, and the direct application of the organic phase-change material is limited to a certain extent. Therefore, in order to overcome the defects of a single inorganic or organic phase change material, the phase change material is doped into a supporting substrate material and encapsulated to obtain the composite phase change energy storage material, and the heat conduction performance and the chemical stability performance superior to those of the single phase change material can be obtained by utilizing the synergistic effect between the phase change material and the supporting substrate material, so that the application field of the composite phase change energy storage material is further expanded.
The packaging materials adopted at present are mainly organic materials and inorganic materials, wherein the inorganic materials (such as montmorillonite, expanded vermiculite and carbon materials), especially three-dimensional porous carbon materials have heat conductivity and thermal stability superior to those of organic materials, and the heat conductivity and chemical stability of the materials can be greatly improved by introducing the inorganic materials into phase change materials. However, most three-dimensional porous carbon has a large number of macroporous structures or microporous structures, the macroporous structures have poor adsorption effect on the phase change material, the microporous structures are not beneficial to molecular motion of the phase change material, the phase change latent heat of the phase change material is reduced to a certain extent, and the energy storage effect is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the graphitized graded porous carbon composite phase change energy storage material and the preparation method thereof, the graphitized graded porous carbon composite phase change energy storage material has the characteristics of high heat conductivity, good chemical stability and good heat storage effect, and the preparation method has the advantages of simple process, low cost and environmental friendliness.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a graphitized graded porous carbon composite phase change energy storage material comprises the following steps:
(1) preparation of graphitized hierarchical porous carbon: mixing a carbon precursor, a graphitization catalyst and a pore-forming agent, adding a solvent which is 1-10 times of the weight of the mixture, ball-milling for 0.5-6 h at 100 r/min-600 r/min, putting the mixture into a drying oven after ball-milling is uniform, drying for 2-12 h at 60-100 ℃ to remove the solvent, putting the mixture into an atmosphere furnace after cooling to room temperature, heating to 500-1100 ℃ at the speed of 1-10 ℃/min in a protective atmosphere of nitrogen or argon, preserving heat for 3-6 h to obtain graphitization hierarchical porous carbon, and cooling to room temperature for later use;
(2) preparing a graphitized hierarchical porous carbon composite phase change energy storage material: ultrasonically dispersing the graphitized hierarchical porous carbon obtained in the step (1) in absolute ethyl alcohol for 1h, adding a phase-change material, heating to a temperature above the melting point of the phase-change material, stirring for 1 h-3 h, drying at 80 ℃ to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase-change energy storage material.
The mass ratio of the carbon precursor, the graphitization catalyst and the pore-forming agent used in the step (1) is (1-10) to (1-10).
The carbon precursor is any one of coal pitch, petroleum pitch, natural pitch, mesophase pitch, lignin, phenolic resin, epoxy resin, bismaleimide resin, polycarbonate resin, polyimide resin, furfural resin, furfuryl alcohol resin and furan resin.
The graphitization catalyst is any one of aluminum oxide, aluminum isopropoxide, aluminum nitrate, aluminum sulfate, aluminum chloride, aluminum acetate, aluminum hydroxide, sodium metaaluminate, aluminum phosphate, aluminum silicate, aluminum acetate, aluminum formate, aluminum oxalate, aluminum propionate, aluminum sec-butoxide, aluminum ethoxide, aluminum lactate, ferric chloride, ferric nitrate, ferrous sulfate, ferrous lactate, ferric stearate, ferrous carbonate, ferric phosphate, ferric sulfate and ferric citrate.
The pore-forming agent is any one of magnesium oxide, nano magnesium oxide, anhydrous magnesium sulfate, magnesium acetate, magnesium stearate, basic magnesium carbonate and magnesium citrate.
The solvent used in the step (1) is any one of water, ethanol, dichloromethane, N-butanol, isopropanol, N-dimethylformamide, N-dimethylacetamide, N-methylformamide, ethylene glycol and N-methylpyrrolidone.
The mass ratio of the graphitized hierarchical porous carbon to the phase-change material used in the step (2) is 0.1: 1-3: 10. Wherein the phase-change material is any one of stearic acid, paraffin, lauric acid, palmitic acid and myristic acid.
The invention has the beneficial effects that:
(1) the graphitized multistage porous carbon material prepared by the invention has a hierarchical pore structure, is mainly mesoporous, has a good adsorption effect on the phase-change material, is favorable for improving the latent heat of the phase-change material and solving the leakage problem of the phase-change material in the phase-change process by adopting the graphitized multistage porous carbon material as a supporting material, has a high pore volume structure, and is favorable for improving the energy storage density of the phase-change composite material. Meanwhile, the multistage porous carbon material has a three-dimensional intercommunicated graphitized porous network structure, can provide a good heat conducting network channel, is favorable for accelerating the transfer of molecules and enhancing the heat transfer performance.
(2) The invention adopts the additive containing metal salt to prepare the porous carbon material, and can reduce partial metal substances by using carbothermic reduction reaction so as to further increase the heat-conducting property of the material.
(3) The compound prepared by the invention fully exerts the synergistic effect of the components, improves the heat conductivity of the composite material, keeps higher latent heat of phase change, has the advantages of high heat conductivity, good chemical stability, good heat storage effect and the like, and the preparation method has the advantages of simple process, low cost, environmental friendliness, good application prospect and good economic benefit.
Drawings
FIG. 1 is a scanning electron microscope picture of graphitized graded porous carbon prepared in step 1) of example 1;
FIG. 2 is a scanning electron microscope picture of the graphitized graded porous carbon composite phase change energy storage material prepared in example 1;
fig. 3 is a scanning electron microscope picture of the graphitized graded porous carbon composite phase change energy storage material prepared in example 2;
FIG. 4 is a scanning electron microscope picture of the graphitized graded porous carbon composite phase change energy storage material prepared in example 3;
FIG. 5 is a scanning electron microscope image of the graphitized graded porous carbon composite phase change energy storage material prepared in example 4;
fig. 6 is a scanning electron microscope picture of the graphitized graded porous carbon composite phase change energy storage material prepared in example 5.
Detailed Description
In order to make the present invention more comprehensible, the technical solutions of the present invention are further described below with reference to specific embodiments, but the present invention is not limited thereto.
Example 1
(1) Respectively weighing phenolic resin, aluminum isopropoxide and nano magnesium oxide according to the mass ratio of 1:2:1, adding ethanol with the mass being 2 times that of the mixture, ball-milling for 3h at 300r/min, putting the mixture into a drying box at 80 ℃, preserving heat and distilling off a solvent, cooling to room temperature, putting the mixture into an atmosphere furnace, introducing nitrogen, heating to 1100 ℃ at the speed of 5 ℃/min, preserving heat for 3h to obtain graphitized hierarchical porous carbon, and cooling to room temperature and taking out for later use; the specific surface area of the prepared graphitized graded porous carbon is 991m2Per g, pore volume of 2.53cm3(ii)/g, average pore diameter of 3.2nm, Al content of 0.56 wt%;
(2) respectively weighing graphitized hierarchical porous carbon and stearic acid according to a mass ratio of 0.5:9.5, adding the graphitized hierarchical porous carbon into absolute ethyl alcohol for ultrasonic treatment for 1h, then adding the stearic acid, heating to 80 ℃, stirring for 1h, then placing in a vacuum drying oven at 80 ℃ for drying to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase change energy storage material; the melting point of the prepared composite phase change energy storage material is 66.5 ℃, the latent heat of phase change is 204.7J/g, and the thermal conductivity is 4.6W/mK.
Example 2
(1) Respectively weighing coal tar pitch, ferrous sulfate and magnesium citrate according to the mass ratio of 1:1:1, adding n-butanol with the mass being 4 times of that of the mixture, ball-milling for 2h at 500r/min, putting the mixture into a drying oven with the temperature of 100 ℃, preserving heat and distilling off the solvent, putting the mixture into an atmosphere furnace after cooling to room temperature, introducing argon, heating to 900 ℃ at the speed of 10 ℃/min, preserving heat for 4h to obtain graphitized hierarchical porous carbon, and taking the graphitized hierarchical porous carbon out for later use after cooling to the room temperature; the specific surface area of the prepared graphitized graded porous carbon is 759m2G, pore volume of 1.93cm3(ii)/g, average pore diameter 2.6 nm, Fe content 0.32 wt%;
(2) respectively weighing graphitized hierarchical porous carbon and paraffin according to a mass ratio of 1:9, adding the graphitized hierarchical porous carbon into absolute ethyl alcohol for ultrasonic treatment for 1h, then adding the paraffin, heating to 70 ℃, stirring for 1h, then placing in a vacuum drying oven at 80 ℃ for drying to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase change energy storage material; the melting point of the prepared composite phase change energy storage material is 54.5 ℃, the latent heat of phase change is 215J/g, and the thermal conductivity is 3.3W/mK.
Example 3
(1) Weighing lignin, ferric stearate and magnesium oxide according to a mass ratio of 1:2:3, adding dichloromethane which is 3 times of the mass of the mixture, ball-milling for 1.5h at 450r/min, putting the mixture into a 70 ℃ drying box, preserving heat, distilling off a solvent, cooling to room temperature, putting the mixture into an atmosphere furnace, introducing nitrogen, heating to 1000 ℃ at a speed of 8 ℃/min, preserving heat for 3.5h to obtain graphitized hierarchical porous carbon, cooling to room temperature, and taking out for later use; the specific surface area of the prepared graphitized graded porous carbon is 599m2Per g, pore volume of 2.01cm3(iv)/g, average pore diameter 3.3 nm, Mg content 0.23 wt%;
(2) respectively weighing graphitized hierarchical porous carbon and myristic acid according to the mass ratio of 1.5:8.5, adding the graphitized hierarchical porous carbon into absolute ethyl alcohol for 1 hour of ultrasonic treatment, then adding myristic acid, heating to 80 ℃, stirring for 1 hour, then placing the obtained product in a vacuum drying oven at 80 ℃ for drying to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase change energy storage material; the melting point of the prepared composite phase change energy storage material is 65.6 ℃, the latent heat of phase change is 189.7J/g, and the thermal conductivity is 2.9W/mK.
Example 4
(1) Respectively weighing epoxy resin, aluminum sulfate and basic magnesium carbonate according to the mass ratio of 1:1:1, adding dichloromethane with 2 times of the mass of the mixture, ball-milling for 2.5h at 400r/min, putting the mixture into a 70 ℃ drying box, preserving heat, distilling off a solvent, cooling to room temperature, putting the mixture into an atmosphere furnace, introducing nitrogen, heating to 800 ℃ at the speed of 5 ℃/min, preserving heat for 4h to obtain graphitized hierarchical porous carbon, and cooling to room temperature, and taking out for later use; the specific surface area of the prepared graphitized graded porous carbon is 633m2G, pore volume of 3.21cm3(ii)/g, average pore diameter of 3.9 nm, Al content of 0.19 wt%;
(2) respectively weighing graphitized hierarchical porous carbon and paraffin according to a mass ratio of 0.5:9.5, adding the graphitized hierarchical porous carbon into absolute ethyl alcohol for ultrasonic treatment for 1h, then adding the paraffin, heating to 70 ℃, stirring for 1h, then placing the obtained product in a vacuum drying oven at 80 ℃ for drying to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase change energy storage material; the melting point of the prepared composite phase change energy storage material is 55.1 ℃, the latent heat of phase change is 233J/g, and the thermal conductivity is 2.8W/mK.
Example 5
(1) Respectively weighing natural asphalt, ferric sulfate and magnesium acetate according to the mass ratio of 1:3:2, adding isopropanol with the mass being 4 times that of the mixture, ball-milling for 1.5h at 500r/min, putting the mixture into a drying box with the temperature of 90 ℃, preserving heat and distilling off the solvent, cooling to room temperature, putting the mixture into an atmosphere furnace, introducing nitrogen, heating to 1050 ℃ at the speed of 4 ℃/min, preserving heat for 3h to obtain graphitized hierarchical porous carbon, and cooling to room temperature and taking out for later use; the specific surface area of the prepared graphitized graded porous carbon is 836m2Per g, pore volume of 2.21cm3(ii)/g, average pore diameter 2.4 nm, Fe content 0.43 wt%;
(2) respectively weighing graphitized hierarchical porous carbon and myristic acid according to a mass ratio of 0.4:9.6, adding the graphitized hierarchical porous carbon into absolute ethyl alcohol for ultrasonic treatment for 1 hour, then adding myristic acid, heating to 70 ℃, stirring for 1 hour, then placing the obtained product in a vacuum drying oven at 80 ℃ for drying to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase change energy storage material; the melting point of the prepared composite phase change energy storage material is 53.1 ℃, the latent heat of phase change is 153J/g, and the thermal conductivity is 2.3W/mK.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (6)
1. A preparation method of a graphitized hierarchical porous carbon composite phase change energy storage material mainly based on mesopores is characterized by comprising the following steps: the method comprises the following steps:
(1) preparation of graphitized hierarchical porous carbon
Mixing a carbon precursor, a graphitization catalyst and a pore-forming agent, adding a solvent which is 1-10 times of the weight of the mixture, performing ball milling, drying to remove the solvent after uniform ball milling, cooling to room temperature, then placing into an atmosphere furnace for carbonization reaction to obtain graphitized hierarchical porous carbon, and cooling to room temperature for later use;
(2) preparation of graphitized hierarchical porous carbon composite phase change energy storage material
Ultrasonically dispersing the graphitized hierarchical porous carbon obtained in the step (1) in absolute ethyl alcohol for 1h, adding a phase-change material, heating to a temperature above the melting point of the phase-change material, stirring for 1 h-3 h, drying at 80 ℃ to constant weight, cooling to room temperature, and taking out to obtain the graphitized hierarchical porous carbon composite phase-change energy storage material;
the mass ratio of the carbon precursor, the graphitization catalyst and the pore-forming agent in the step (1) is 1 (1-10) to 1-10;
the graphitizing catalyst is any one of aluminum oxide, aluminum isopropoxide, aluminum nitrate, aluminum sulfate, aluminum chloride, aluminum acetate, aluminum hydroxide, sodium metaaluminate, aluminum phosphate, aluminum silicate, aluminum formate, aluminum oxalate, aluminum propionate, aluminum sec-butoxide, aluminum ethoxide and aluminum lactate;
the pore-forming agent is any one of magnesium oxide, anhydrous magnesium sulfate, magnesium acetate, magnesium stearate, basic magnesium carbonate and magnesium citrate.
2. The method of claim 1, wherein: the carbon precursor is any one of coal pitch, petroleum pitch, natural pitch, mesophase pitch, lignin, phenolic resin, epoxy resin, bismaleimide resin, polycarbonate resin, polyimide resin and furan resin.
3. The method of claim 1, wherein: the solvent used in the step (1) is any one of water, ethanol, dichloromethane, N-butanol, isopropanol, N-dimethylformamide, N-dimethylacetamide, N-methylformamide, ethylene glycol and N-methylpyrrolidone.
4. The method of claim 1, wherein: the rotation speed of the ball milling in the step (1) is 100 r/min-600 r/min, and the time is 0.5 h-6 h; the carbonization reaction is carried out in the protective atmosphere of nitrogen or argon, the temperature rise rate is 1-10 ℃/min, the reaction temperature is 500-1100 ℃, and the time is 3-6 h.
5. The method of claim 1, wherein: the mass ratio of the graphitized hierarchical porous carbon to the phase-change material used in the step (2) is 0.1: 1-3: 10.
6. The production method according to claim 1 or 5, characterized in that: the phase-change material is any one of stearic acid, paraffin, lauric acid, palmitic acid and myristic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223926.1A CN109321211B (en) | 2018-10-19 | 2018-10-19 | Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223926.1A CN109321211B (en) | 2018-10-19 | 2018-10-19 | Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109321211A CN109321211A (en) | 2019-02-12 |
| CN109321211B true CN109321211B (en) | 2021-04-27 |
Family
ID=65262827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811223926.1A Active CN109321211B (en) | 2018-10-19 | 2018-10-19 | Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109321211B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777368B (en) * | 2019-03-07 | 2021-01-01 | 宁波石墨烯创新中心有限公司 | Porous carbon composite phase change material and preparation method thereof |
| CN110655073A (en) * | 2019-09-17 | 2020-01-07 | 西安交通大学 | Artificial graphite material with spherical structure and preparation method thereof |
| CN111547706B (en) * | 2020-05-11 | 2022-12-06 | 赤峰福纳康生物技术有限公司 | Method for removing fullerene solvent residue |
| CN113443622B (en) * | 2020-08-19 | 2023-09-22 | 福建省鑫森炭业股份有限公司 | Method for loading nano metal oxide or nano metal material by porous carbon |
| CN114162814B (en) * | 2020-08-20 | 2024-05-10 | 洛阳月星新能源科技有限公司 | Modification method of graphite |
| CN111960401B (en) * | 2020-08-27 | 2022-05-10 | 江南大学 | Biomass-based phase-change latent heat energy storage material and preparation method thereof |
| CN113637462B (en) * | 2021-08-19 | 2023-10-10 | 中国科学院广州能源研究所 | Preparation method of chemical heat storage material based on ordered porous carbon base |
| CN113789158A (en) * | 2021-10-21 | 2021-12-14 | 中国矿业大学 | Preparation method of waste plastic modified and shaped phase-change material heat storage working medium |
| CN117886314A (en) * | 2023-12-27 | 2024-04-16 | 有研(广东)新材料技术研究院 | Graphitized carbon carrier with high specific surface area and preparation method thereof |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100528747C (en) * | 2007-02-07 | 2009-08-19 | 中国科学院山西煤炭化学研究所 | Method for preparing medium pore carbon of narrow aperture and high degree of graphitization |
| CN101456554B (en) * | 2009-01-06 | 2011-05-18 | 黑龙江大学 | Method for preparing graphitization nano carbon |
| CN101693823B (en) * | 2009-10-28 | 2011-07-27 | 哈尔滨工业大学 | Method for preparing energy-storing materials through using phase-change materials to fill graphitized foam carbon |
| CN101880924B (en) * | 2010-07-05 | 2012-08-01 | 重庆大学 | Method for graphitizing polyacrylonitrile-based carbon fiber at low temperature |
| CN101916856B (en) * | 2010-08-05 | 2012-12-05 | 深圳市贝特瑞新能源材料股份有限公司 | Cathode material for lithium-ion power and energy storage battery and preparation method thereof |
| CN102013475A (en) * | 2010-10-22 | 2011-04-13 | 秦波 | Method for preparing porous spherical Li(1-x)MxFe(1-y)Ny(PO4)([3+(alpha-1)x+(beta-2) y]/3)/C material |
| CN103112854B (en) * | 2013-01-31 | 2015-04-08 | 黑龙江大学 | Method for synthesizing carbide/porous graphitized carbon nano compound through one-step method |
| CN103303912B (en) * | 2013-07-05 | 2015-10-21 | 黑龙江大学 | A kind of preparation method of high specific surface area porous N doping graphitization nano carbon material |
| CN104300150A (en) * | 2014-05-07 | 2015-01-21 | 河南中联高科新能源有限公司 | Asphalt-based nanoporous carbon material, negative material thereof, and lithium ion battery |
| CN106744937A (en) * | 2016-12-07 | 2017-05-31 | 中国科学院新疆理化技术研究所 | The preparation method and purposes of a kind of graphitization grading-hole Carbon Materials of N doping |
| CN106829914A (en) * | 2017-01-22 | 2017-06-13 | 广西大学 | A kind of three-dimensional porous carbon negative pole material of lithium ion battery |
| CN106744783B (en) * | 2017-03-20 | 2018-12-25 | 福州大学 | A kind of preparation method being graphitized hollow carbon microspheres |
| CN107265436A (en) * | 2017-07-31 | 2017-10-20 | 武汉大学 | The preparation method and applications of biomass graphitized stephanoporate material with carbon element |
| CN107640758B (en) * | 2017-10-30 | 2019-10-15 | 福州大学 | A kind of preparation method of mesoporous carbon/graphene oxide compound |
| CN108002363B (en) * | 2017-12-08 | 2020-12-04 | 湖南大学 | Preparation method of porous nano carbon |
| CN108101043B (en) * | 2017-12-21 | 2021-05-18 | 陕西科技大学 | Preparation method and application of coal-derived artificial graphite material |
| CN108539142B (en) * | 2018-03-08 | 2020-07-03 | 深圳市清新电源研究院 | Preparation method of lithium-sulfur battery positive electrode material |
| CN108455582A (en) * | 2018-04-17 | 2018-08-28 | 福州大学 | A kind of preparation method of the three-dimensional porous grapheme material of low cost |
| CN108455592B (en) * | 2018-04-28 | 2021-09-24 | 福州大学 | Preparation method of nitrogen-doped porous carbon/carbon nanotube composite with interpenetrating network structure |
| CN108557799B (en) * | 2018-06-04 | 2020-10-09 | 高彪峰 | High-purity high-conductivity graphene-like hierarchical porous carbon and preparation method thereof |
| CN108624295B (en) * | 2018-06-25 | 2020-09-11 | 北京科技大学 | Preparation method of porous carbon-based electrothermal composite phase change material |
| CN108557816B (en) * | 2018-06-26 | 2022-02-01 | 武汉大学 | Preparation method of porous graphitized carbon with high specific surface area |
-
2018
- 2018-10-19 CN CN201811223926.1A patent/CN109321211B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109321211A (en) | 2019-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109321211B (en) | Graphitized hierarchical porous carbon composite phase-change energy storage material and preparation method thereof | |
| Liu et al. | Lamellar-structured phase change composites based on biomass-derived carbonaceous sheets and sodium acetate trihydrate for high-efficient solar photothermal energy harvest | |
| CN105502359B (en) | A kind of preparation method of inexpensive porous graphene | |
| CN104710965A (en) | Method for preparing multilevel porous carbon base composite phase change material | |
| CN108383098B (en) | Hollow porous carbon material co-doped with various heteroatoms, and preparation method and application thereof | |
| CN104745149A (en) | Preparation method for carbon-containing material metal organic framework-based composite phase change material | |
| Zhang et al. | Thermal behavior of composite phase change materials based on polyethylene glycol and expanded vermiculite with modified porous carbon layer | |
| CN106867466B (en) | Method for synthesizing inorganic phase change energy storage material by using fly ash and hydrated inorganic salt | |
| Du et al. | Development of capric acid-stearic acid-palmitic acid low-eutectic phase change material with expanded graphite for thermal energy storage | |
| CN112574718B (en) | Hydrated salt/modified expanded graphite shaped phase-change heat storage material for medium and low temperature and preparation method thereof | |
| CN109609098B (en) | Composite phase-change heat storage material and preparation thereof | |
| Peng et al. | Thermal conductivity enhancement utilizing the synergistic effect of carbon nanocoating and graphene addition in palmitic acid/halloysite FSPCM | |
| CN106190041B (en) | Preparation method of 3D porous carbon skeleton-based composite phase change material | |
| Li et al. | Encapsulation of lauric acid in reduced graphene-N-doped porous carbon supporting scaffold for multi-functional phase change composites | |
| Ao et al. | Design of a stearic acid/boron nitride/expanded graphite multifiller synergistic composite phase change material for thermal energy storage | |
| CN108178144B (en) | Carbon nanotube aerogel and preparation and application thereof | |
| Xin et al. | Effect of NiCo2O4-modified expanded graphite on heat transfer and storage improvement of CaCl2⋅ 6H2O | |
| Ma et al. | Halloysite-based aerogels for efficient encapsulation of phase change materials with excellent solar energy storage and retrieval performance | |
| Chen et al. | Review on Porous Ceramic‐Based Form‐Stable Phase Change Materials: Preparation, Enhance Thermal Conductivity, and Application | |
| Li et al. | A facile method to construct graphene oxide–based magnesium hydroxide for chemical heat storage | |
| CN114716978B (en) | Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof | |
| CN110407605B (en) | Preparation process of porous supercapacitor material | |
| CN109796220B (en) | Calcium carbonate-calcium silicate-silicon dioxide aerogel multi-layer composite heat-insulating material and preparation method thereof | |
| CN113429940A (en) | Nano silicon carbide reinforced heat storage composite phase change heat storage material and preparation method thereof | |
| CN116751567B (en) | Biological carbon photo-thermal composite shaping phase change material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |