CN115058058B - Preparation method of liquid metal-based photo-thermal phase-change energy storage aerogel - Google Patents
Preparation method of liquid metal-based photo-thermal phase-change energy storage aerogel Download PDFInfo
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- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 56
- 238000004146 energy storage Methods 0.000 title claims abstract description 51
- 239000004964 aerogel Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920002678 cellulose Polymers 0.000 claims abstract description 23
- 239000001913 cellulose Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 238000005470 impregnation Methods 0.000 claims abstract description 7
- PTHCMJGKKRQCBF-UHFFFAOYSA-N Cellulose, microcrystalline Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC)C(CO)O1 PTHCMJGKKRQCBF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000011068 loading method Methods 0.000 claims abstract description 5
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 238000000498 ball milling Methods 0.000 claims description 15
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 14
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 12
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 12
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 12
- 239000008117 stearic acid Substances 0.000 claims description 12
- 238000000713 high-energy ball milling Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 230000029936 alkylation Effects 0.000 claims description 6
- 238000005804 alkylation reaction Methods 0.000 claims description 6
- WTBAHSZERDXKKZ-UHFFFAOYSA-N octadecanoyl chloride Chemical compound CCCCCCCCCCCCCCCCCC(Cl)=O WTBAHSZERDXKKZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000004108 freeze drying Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 239000011232 storage material Substances 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000002152 alkylating effect Effects 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 19
- 230000031700 light absorption Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229920000547 conjugated polymer Polymers 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000013354 porous framework Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K9/04—Ingredients treated with organic substances
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Abstract
The invention discloses a preparation method of novel liquid metal-based photo-thermal phase-change energy storage aerogel in the technical field of composite material preparation, which aims to solve the defects of low photo-thermal conversion performance, low thermal conductivity, easy leakage and the like of the traditional phase-change energy storage material, and comprises the following steps of firstly preparing liquid metal-based photo-thermal phase-change particles; alkylating and modifying the cellulose gel to obtain alkylated cellulose aerogel; and after melting the liquid metal-based photo-thermal phase-change particles, loading the melted liquid metal-based photo-thermal phase-change particles into the alkylated cellulose aerogel through vacuum impregnation, so as to obtain the liquid metal-based photo-thermal phase-change energy storage aerogel. The liquid metal-based photo-thermal phase change energy storage aerogel prepared by the method has the advantages of high-efficiency photo-thermal conversion, leakage prevention, heat conduction enhancement and high energy storage enthalpy value, so that the liquid metal-based photo-thermal phase change energy storage aerogel is widely applied to the field of photo-thermal phase change energy storage materials.
Description
Technical Field
The invention relates to a preparation method of liquid metal-based photo-thermal phase-change energy storage aerogel, and belongs to the technical field of composite material preparation.
Background
With the development of social economy, the demand of human beings for energy is increasing, and sustainable renewable environment-friendly energy is favored by people due to the shortage of global energy. Solar energy plays an important role in the energy field as sustainable renewable energy. Therefore, the efficient utilization of solar resources is of great significance in alleviating global resource shortage. Among them, the most direct and simplest way to efficiently use solar energy is to convert light-heat conversion, i.e., light energy into heat energy. Thus, excellent photothermal conversion materials can efficiently use solar energy resources, for example, conventional photothermal conversion materials such as: semiconductors, conjugated polymers, noble metal particles, carbon materials, and the like.
Due to the characteristic of solar east and west, the solar energy resource has the problems of energy conversion, time and space mismatch, and the utilization rate of solar energy is greatly reduced. Therefore, the development of the solar energy storage material is an effective way for improving the solar energy utilization efficiency. The organic solid-liquid phase change energy storage material is a substance which changes its own state when its own temperature changes and provides latent heat, so that the organic solid-liquid phase change energy storage material can be used as a solar energy storage material, but the traditional phase change energy storage material has the defects of low light-heat conversion performance, low heat conductivity, easy leakage and the like.
Liquid metal is used as a novel metal material, the low melting point of the liquid metal enables the liquid metal to undergo phase change (namely, to be converted from solid state to liquid state) at a lower temperature, but the low light absorption performance and the energy storage enthalpy limit the application of the liquid metal in the field of photo-thermal phase change. Therefore, the light absorption capacity and the phase change energy storage performance of the liquid metal are improved, and the method has extremely high scientific research significance and practical value for widening the application field of the liquid metal and improving the solar energy utilization rate.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a preparation method of liquid metal-based photo-thermal phase-change energy storage aerogel, which overcomes the defects of low photo-thermal conversion performance, low thermal conductivity, easiness in leakage and the like of the traditional phase-change energy storage material, so that the liquid metal-based photo-thermal phase-change energy storage aerogel is widely applied to the field of photo-thermal phase-change energy storage materials.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
according to a first aspect of the invention, a method for preparing a liquid metal-based photo-thermal phase change energy storage aerogel comprises the following steps,
s1, mixing liquid metal and stearic acid according to a certain proportion, performing first high-energy ball milling, mixing a ball milling product with molybdenum disulfide, and performing second high-energy ball milling to obtain liquid metal-based photo-thermal phase change particles;
s2, freeze-drying the cellulose solution to obtain cellulose gel, and placing the cellulose gel in a mixed solution of petroleum ether, stearoyl chloride and triethylamine for alkylation modification to obtain alkylated cellulose aerogel;
and S3, after melting the liquid metal-based photo-thermal phase change particles, loading the melted liquid metal-based photo-thermal phase change particles into the alkylated cellulose aerogel through vacuum impregnation, and thus obtaining the liquid metal-based photo-thermal phase change energy storage aerogel.
Further, the mass ratio of the liquid metal to the stearic acid is 1: 4-1: 19.
further, the first high-energy ball milling time is 10 hours, and the second high-energy ball milling time is 2 hours.
Further, the mass of the molybdenum disulfide is 5% of the mass of the first high-energy ball milling product.
Further, the concentration of the cellulose solution was 2wt%, and the freezing time thereof was 48 hours.
Further, the mass ratio of petroleum ether to stearoyl chloride to triethylamine is 26:2.4:1.
Further, the reaction temperature for the alkylation modification in the step S2 is 60 ℃, and the reaction time is 24 hours.
Further, in step S3, the melting temperature is 90 ℃, and the vacuum impregnation time is 2 hours.
According to a second aspect of the invention, there is also provided a liquid metal-based photo-thermal phase change energy storage aerogel made by the method of any of the above.
According to a third aspect of the invention, there is also provided the use of the liquid metal-based photo-thermal phase change energy storage aerogel in photo-thermal phase change energy storage.
Compared with the prior art, the invention has the beneficial effects that:
the liquid metal-based photo-thermal phase-change energy storage particles prepared by the method have excellent photo-thermal conversion performance and higher phase-change energy storage enthalpy value, and are greatly improved compared with the original liquid metal; and then the liquid metal-based photo-thermal phase-change energy storage aerogel is prepared by combining the liquid metal-based photo-thermal phase-change energy storage aerogel with alkylated cellulose aerogel, so that the defects of low photo-thermal conversion efficiency, easiness in leakage and poor thermal conductivity of the traditional phase-change energy storage material are overcome, and the application of the liquid metal in the photo-thermal phase-change field is widened.
Drawings
FIG. 1 shows product a in the examples of the invention 1 、a 2 And a 3 A schematic of a DSC image of (2);
FIG. 2 shows product a in the examples of the invention 1 、a 2 And a 3 Is a schematic representation of absorbance images;
FIG. 3 shows product A in the examples of the invention 1 And A 2 A schematic representation of light reflectance in the spectral range 250-2500 nm;
FIG. 4 shows product A in the examples of the invention 1 And A 2 At 1 Kw/m 2 Schematic diagram of temperature change under irradiation of light source;
FIG. 5 shows product A in the examples of the invention 1 And A 2 Is a schematic diagram of the thermal conductivity of (a);
FIG. 6 shows product A in the examples of the invention 2 A schematic of a DSC image of (2);
FIG. 7 shows product A in the examples of the invention 2 Is a schematic diagram of the leak-proof performance test.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and such range or value should be understood to encompass values approaching those range or value. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
For the purposes of this specification and the appended claims, unless otherwise indicated, all numbers expressing quantities, percentages or proportions, as used in the specification and the appended claims, are to be understood as being modified in all instances by the term "about". Furthermore, all ranges disclosed herein are inclusive of the endpoints and independently combinable.
Example 1
The mass ratio of the liquid metal to the stearic acid is respectively 1:4, mixing and placing the mixture in a ball milling tank, and performing high-energy mechanical ball milling for 10h to obtain a product a 1 。
Example 2
The mass ratio of the liquid metal to the stearic acid is respectively 1:19 are mixed in proportion and placed in a ball milling tank, and high-energy mechanical ball milling is carried out for 10h to obtain a product a 2 Adding molybdenum disulfide into the catalyst with a 2 Ball-milling for 2 hours in a ball-milling tank to obtain the liquid metal-based photo-thermal phase change particles a 3 Wherein molybdenum disulfide is a 2 5% of the mass.
Example 3
S1, mixing liquid metal and stearic acid according to a mass ratio of 1:19 are mixed in proportion and placed in a ball milling tank, and high-energy mechanical ball milling is carried out for 10h to obtain a product a 2 。
S2, placing a cellulose solution with the weight percentage of 2 percent in a cylindrical/square container, freeze-drying for 48 hours to obtain cellulose aerogel, then placing the cellulose aerogel in a mixed solution of petroleum ether, stearoyl chloride and triethylamine (the mass ratio of the three is 26:2.4:1), and carrying out alkylation modification at the temperature of 60 ℃ for 24h to obtain alkylated cellulose aerogel;
s3, a is carried out 2 Placed in a container and put into an oven to melt, and a is carried out by using a vacuum impregnation method 2 Loading into alkylated cellulose aerogel to obtain aerogel product A 1 。
Example 4
S1, mixing liquid metal and stearic acid according to a mass ratio of 1:19 are mixed in proportion and placed in a ball milling tank, and high-energy mechanical ball milling is carried out for 10h to obtain a product a 2 . Adding molybdenum disulfide into the catalyst with a 2 Ball milling pot (molybdenum disulfide a) 2 Ball milling for 2h in 5% of mass to obtain liquid metal-based photo-thermal phase change particles a 3 。
S2, placing a cellulose solution with the weight percentage of 2 percent in a cylindrical/square container, freeze-drying for 48 hours to obtain cellulose aerogel, and placing the cellulose aerogel in a mixed solution of petroleum ether, stearoyl chloride and triethylamine (the mass ratio is 26:2.4:1), and carrying out alkylation modification at the temperature of 60 ℃ for 24 hours to obtain alkylated cellulose aerogel;
s3, a is carried out 3 Placed in a container and put into an oven to melt, and a is carried out by using a vacuum impregnation method 3 Loading into alkylated cellulose aerogel to obtain aerogel product A 2 。
The properties of the products produced in the examples of the present invention will be analyzed with reference to the accompanying drawings.
First for the product a obtained in example 1-2 1 、a 2 And a 3 Performance analysis, in conjunction with FIG. 1, FIG. 1 is a DSC image schematic of three products, from which product a can be calculated 1 、a 2 And a 3 The melting enthalpies of (a) are 165.5J/g, 205.5J/g and 190.6J/g, respectively, and the cold crystallization enthalpies are 169.9J/g, 211.5J/g and 195.8J/g, respectively. From the results it can be seen that a by adjusting the ratio of liquid metal to stearic acid 2 Both the melting enthalpy value and the cold crystallization enthalpy value of (a) are higher than a 1 It is proved that as the stearic acid content increases, the melting enthalpy value and the cold crystallization enthalpy value of the product increase correspondingly.
And, product a 3 Is compared with a 2 To be low, this is mainly due to the fact that molybdenum disulphide does not have phase change energy storage properties. Referring to FIG. 2, FIG. 2 is a schematic diagram of absorbance images of three products, from FIG. 2 it can be seen that after molybdenum disulfide addition, a 3 Exhibits a ratio of a 2 The superior light absorption performance is mainly because molybdenum disulfide is a semiconductor excellent in light absorption performance and a wide light absorption range, and it exhibits a flower-like microstructure that can cause multiple reflection of light to enhance light absorption thereof.
Next, for the product A obtained in examples 3 to 4 1 And A 2 The performance was analyzed. FIG. 3 is product A 1 And A 2 A is apparent from the schematic representation of the light reflectivity in the spectral range from 250 to 2500nm 2 Exhibits a low light reflectance, mainly due toAlso due to the broad light absorption range of molybdenum disulfide and the multiple reflection of light. Then, in combination with FIG. 4, at 1 Kw/m 2 Under the irradiation of a light source, A 1 And A 2 Has a different degree of rise in surface temperature, wherein A 1 And A 2 The surface temperatures of 52.2 c and 54.6 c, respectively, are achieved, which is consistent with the results described in fig. 3.
FIG. 5 is product A 1 And A 2 Is shown in the heat conductivity coefficient diagram to obtain A 1 And A 2 The thermal conductivity of the phase change energy storage material is 0.2861W/mK and 0.3095W/mK respectively, and obviously, the introduction of molybdenum disulfide can improve the heat transmission performance of the phase change energy storage material, wherein A is as follows 2 Ratio A 1 Having a higher thermal conductivity may be that molybdenum disulfide has good wettability and may reduce A 2 Internal thermal resistance.
FIG. 6 is product A 2 The DSC image schematic diagram of the (B) is calculated to obtain 187.5J/g and 192.6J/g of the melting enthalpy and the cold crystallization enthalpy respectively, and the (B) has a higher phase change energy storage enthalpy value. FIG. 7A is 2 In the anti-leakage test, the block-shaped pure stearic acid is used as a comparison, the pure stearic acid is placed on a heating table at 90 ℃ for heating, and as can be seen from fig. 7, the pure stearic acid sample is melted into colorless liquid within 4 minutes, the shape stability and the anti-leakage performance are poor, in comparison with A 2 The samples exhibited excellent shape stability and leakage resistance, and no significant leakage occurred even after 80 minutes of heating. This is mainly due to the surface tension and capillary forces of the alkylated cellulose aerogel promoting a 3 Good dispersion in 3D aerogel porous framework, allowing A 2 The material has good shape stability and leakage resistance in the phase change process.
The novel liquid metal-based photo-thermal phase-change particles are prepared by a simple mechanical ball milling method, and meanwhile, the cellulose aerogel is introduced as a matrix to prepare the liquid metal-based photo-thermal phase-change energy storage aerogel with high photo-thermal conversion, leakage prevention, heat conduction enhancement and high energy storage enthalpy value, so that the defects of low photo-thermal conversion performance, low heat conductivity, easiness in leakage and the like of the traditional phase-change energy storage material are overcome, and the novel liquid metal-based photo-thermal phase-change energy storage aerogel is widely applied to the field of photo-thermal phase-change energy storage materials.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (9)
1. A preparation method of liquid metal-based photo-thermal phase-change energy storage aerogel is characterized by comprising the following steps of: the method comprises the following steps:
s1, the mass ratio is 1: 4-1: 19, mixing the liquid metal with stearic acid, performing first high-energy ball milling, mixing the ball milling product with molybdenum disulfide, and performing second high-energy ball milling to obtain liquid metal-based photo-thermal phase change particles;
s2, freeze-drying the cellulose solution to obtain cellulose gel, and placing the cellulose gel in a mixed solution of petroleum ether, stearoyl chloride and triethylamine for alkylation modification to obtain alkylated cellulose aerogel;
and S3, after melting the liquid metal-based photo-thermal phase change particles, loading the melted liquid metal-based photo-thermal phase change particles into the alkylated cellulose aerogel through vacuum impregnation, and thus obtaining the liquid metal-based photo-thermal phase change energy storage aerogel.
2. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: the first high-energy ball milling time is 10 hours, and the second high-energy ball milling time is 2 hours.
3. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: the mass of the molybdenum disulfide is 5% of the mass of the first high-energy ball milling product.
4. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: the cellulose solution had a concentration of 2wt% and a freezing time of 48 hours.
5. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: the mass ratio of petroleum ether to stearoyl chloride to triethylamine is 26:2.4:1.
6. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: the reaction temperature for alkylation modification in the step S2 is 60 ℃, and the reaction time is 24 hours.
7. The method for preparing the liquid metal-based photo-thermal phase-change energy storage aerogel according to claim 1, wherein the method comprises the following steps: in the step S3, the melting temperature is 90 ℃, and the vacuum impregnation time is 2 hours.
8. The utility model provides a liquid metal base photo-thermal phase transition energy storage aerogel which characterized in that: a process according to any one of claims 1 to 7.
9. The use of the liquid metal-based photo-thermal phase change energy storage aerogel according to claim 8 in photo-thermal phase change energy storage.
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