CN112670100A - Preparation method of supercapacitor electrode material - Google Patents
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Abstract
The invention belongs to the technical field of electrode materials, and particularly relates to a preparation method of a supercapacitor electrode material. The invention takes the bamboo dust as the basic raw material, utilizes the surfactant to activate and utilizes the steam explosion to expand the internal gap, meanwhile, the active sites on the surface can be effectively increased by using the low-temperature pre-carbonization treatment, and then the active sites are treated with concentrated sulfuric acid to effectively activate, meanwhile, the concave-convex property of the surface of the pretreated bamboo chips can be effectively increased, the contact surface is increased, the specific surface area and the pore volume are improved, and then the bamboo chips and the composite material are mixed, the metal elements in the composite material are deposited on the surface to form a multi-metal element composite state, which plays a certain promoting effect, can effectively improve the ion diffusion efficiency of the electrolyte and improve the specific capacitance, and then is mixed with aniline monomer, the initiator is used for initiating and polymerizing the bamboo chips, and the initiator and the modified bamboo chips are compounded to form the supercapacitor electrode material.
Description
Technical Field
The invention belongs to the technical field of electrode materials, and particularly relates to a preparation method of a supercapacitor electrode material.
Background
An electrochemical capacitor, a so-called super capacitor (Supercapacitor), is a novel energy storage device, and has the advantages of short charging time, high power density, good temperature characteristics, environmental friendliness and the like. Meanwhile, the super capacitor does not generate chemical reaction in the energy storage process, has electrochemical reversibility and becomes a novel electrochemical element.
Generally, supercapacitors can be classified into two major categories, Electric Double Layer Capacitors (EDLCs) and pseudo capacitors (pesudocapaeiters), according to the mechanism of energy storage. The super capacitor can be divided into three categories, namely an aqueous electrolyte capacitor, a solid electrolyte capacitor and an organic electrolyte capacitor, based on the difference of the type of electrolyte used; the structure of the electrode device and the difference of the reaction on the electrode can be divided into two categories of symmetrical capacitors and asymmetrical capacitors; the capacitor can be classified into a winding type capacitor, a button type capacitor and a large capacitor according to different manufacturing processes and appearance structures.
With the development of human beings, the environment is increasingly worsened, so that high importance is paid to new energy in various countries, and the super capacitor has the advantages of high energy density, high power density, good safety, no pollution to the environment and the like, so that the super capacitor is a key point of wide attention of researchers, and is accepted by more and more market people, and the share of the market share is gradually enlarged. Among them, the mature small-capacity super capacitor is applied to the fields of solar lawn lamps, digital photo frames, electric toys, intelligent instruments, electric energy meters and the like by more people.
In a super capacitor carbon material family, the activated carbon material has the advantages of high tap density and conductivity, good chemical stability, controllable particle size, low price and the like, so that the activated carbon material becomes an ideal novel carbon material for super capacitors. In general, pure activated carbon materials have only an electric double layer capacitance, and therefore, the specific capacitance obtained is not high.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problem of low specific capacitance of an active carbon material, a preparation method of a super capacitor electrode material is provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6: 0.3-0.6: 15, steaming, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive at 300-350 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to the solid-liquid g/mL ratio of 3:7, stirring under the protection of nitrogen, discharging, filtering, washing, drying, and collecting the dried matter to obtain modified bamboo chips;
(3) taking 120-130 parts of water, 60-70 parts of modified bamboo chips, 20-25 parts of composite material and 10-15 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, and stirring under the protection of nitrogen;
(4) and after stirring, adding the composite material, heating, cooling, discharging, filtering, drying, collecting the dried material, uniformly mixing the dried material, aniline and hydrochloric acid solution according to the mass ratio of 7: 6-9: 20, stirring, adding an initiator 1-2 times of the mass of the aniline and an auxiliary agent 10-15% of the mass of the aniline, stirring for reaction, discharging, filtering, washing and drying to obtain the electrode material of the supercapacitor.
Preferably, the surfactant in the step (1) is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
Preferably, the additive in the step (3) is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
Preferably, the composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 2-4.
Preferably, the initiator in the step (4) is any one of ammonium persulfate and sodium persulfate.
Preferably, the adjuvant in the step (4) is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
Compared with other methods, the method has the beneficial technical effects that:
(1) the invention takes the bamboo dust as the basic raw material, utilizes the surfactant to activate and utilizes the steam explosion to expand the internal gap, meanwhile, the active sites on the surface can be effectively increased by using the low-temperature pre-carbonization treatment, and then the active sites are treated with concentrated sulfuric acid to effectively activate, meanwhile, the concave-convex property of the surface of the pretreated bamboo chips can be effectively increased, the contact surface is increased, the specific surface area and the pore volume are improved, and then the bamboo chips and the composite material are mixed, the metal elements in the composite material are deposited on the surface to form a multi-metal element composite state, which plays a certain promoting effect, can effectively improve the ion diffusion efficiency of the electrolyte and improve the specific capacitance, and then is mixed with aniline monomer, initiating by using an initiator to polymerize the initiator, and compounding the initiator with the modified bamboo chips to form the electrode material of the supercapacitor;
(2) the electrode material of the super capacitor has rich pores and large specific surface area, can enhance the diffusion efficiency of ions by utilizing the action of the composite metal, improves the specific capacitance, and can effectively increase surface active groups, enhance the binding performance with polyaniline and improve the performance of the electrode material of the super capacitor because the bamboo dust is pre-carbonized at low temperature instead of being completely carbonized.
Detailed Description
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 2-4.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6: 0.3-0.6: 15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 300-350 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 120-130 parts of water, 60-70 parts of modified bamboo chips, 20-25 parts of composite material and 10-15 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 130-140 ℃, heating for 8-10 h, cooling to room temperature, discharging, filtering, collecting filter residues, drying the filter residues, collecting dried substances, uniformly mixing the dried substances, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7: 6-9: 20, stirring at 700r/min for 20min, adding an initiator 1-2 times the mass of the aniline and an auxiliary agent 10-15% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to be neutral, and drying to obtain the supercapacitor electrode material.
Example 1
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 4.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6: 0.6:15, steaming at 100 ℃ for 2 hours, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive at 350 ℃ for 1 hour to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 130 parts of water, 70 parts of modified bamboo chips, 25 parts of composite material and 15 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 140 ℃, heating for 10h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:9:20, stirring at 700r/min for 20min, adding an initiator 12 times the mass of the aniline and an auxiliary agent 15% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to be neutral, and drying to obtain the electrode material of the supercapacitor.
Example 2
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 3.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6:0.5:15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 320 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 125 parts of water, 66 parts of modified bamboo chips, 23 parts of composite material and 13 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at the speed of 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 135 ℃, heating for 9h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 13% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to neutrality, and drying to obtain the electrode material of the supercapacitor.
Example 3
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 2.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6:0.3:15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 300 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 120 parts of water, 60 parts of modified bamboo chips, 20 parts of composite material and 10 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 130 ℃, heating for 8h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 105% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to neutrality, and drying to obtain the electrode material of the supercapacitor.
Comparative example 1
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 3.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6:0.5:15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 320 ℃ to obtain pre-modified bamboo scraps;
(2) taking 125 parts of water, 66 parts of pre-modified bamboo chips, 23 parts of composite material and 13 parts of additive by weight, firstly putting the water, the pre-modified bamboo chips and the additive into a reactor, stirring for 30min at 800r/min under the protection of nitrogen;
(3) after stirring, adding the composite material, heating to 135 ℃, heating for 9h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 13% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to neutrality, and drying to obtain the electrode material of the supercapacitor.
Comparative example 2
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 3.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing the bamboo sawdust, the surfactant and water according to the mass ratio of 6:0.5:15, cooking for 2 hours at 100 ℃, and filtering to obtain pre-modified bamboo sawdust;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 125 parts of water, 66 parts of modified bamboo chips, 23 parts of composite material and 13 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at the speed of 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 135 ℃, heating for 9h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 13% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to neutrality, and drying to obtain the electrode material of the supercapacitor.
Comparative example 3
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6:0.5:15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 320 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 125 parts of water, 66 parts of modified bamboo chips and 13 parts of additive in parts by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at the speed of 800r/min under the protection of nitrogen;
(4) after stirring, heating to 135 ℃, heating for 9h, cooling to room temperature, discharging, filtering, collecting filter residues, drying the filter residues, collecting dried substances, uniformly mixing the dried substances, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 13% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to be neutral, and drying to obtain the electrode material of the supercapacitor.
Comparative example 4
The surfactant is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
The additive is formed by mixing urea and oleamide according to the mass ratio of 9: 1.
The composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to the mass ratio of 7:3: 3.
The initiator is any one of ammonium persulfate and sodium persulfate.
The auxiliary agent is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
A preparation method of a supercapacitor electrode material comprises the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6:0.5:15, steaming and boiling for 2 hours at 100 ℃, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive for 1 hour at 650 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to a solid-liquid g/mL ratio of 3:7, stirring for 3 hours at a speed of 500r/min under the protection of nitrogen, discharging, filtering, collecting filter cakes, washing the filter cakes to be neutral, drying at 90 ℃, and collecting dried substances to obtain modified bamboo chips;
(3) taking 125 parts of water, 66 parts of modified bamboo chips, 23 parts of composite material and 13 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, stirring for 30min at the speed of 800r/min under the protection of nitrogen;
(4) after stirring, adding the composite material, heating to 135 ℃, heating for 9h, cooling to room temperature, discharging, filtering, collecting filter residue, drying the filter residue, collecting dried substance, uniformly mixing the dried substance, aniline and 0.9mol/L hydrochloric acid solution according to the mass ratio of 7:6:20, stirring at 700r/min for 20min, adding an initiator 1 time the mass of the aniline and an auxiliary agent 13% of the mass of the aniline, stirring for reaction for 6h, discharging, filtering, collecting filter cakes, washing to neutrality, and drying to obtain the electrode material of the supercapacitor.
The supercapacitor electrode materials in the examples and comparative examples were tested:
specific capacitance: cyclic voltammetry test (scan rate of 10mV s)-1）；
Coulomb efficiency: and (3) detecting the cycle life: current density of 1A g within 0-1.0V-1Keeping the coulomb efficiency of the electrode material of the super capacitor for 10000 times; the detection is as follows:
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Specific capacitance/(F g)-1） | 193.6 | 196.8 | 194.2 | 174.3 | 168.2 | 176.2 | 180.2 |
| Coulomb efficiency/% | 99 | 100 | 100 | 96 | 94 | 97 | 98 |
In conclusion, the embodiment 2 is taken as the optimal embodiment, and reference detection is carried out, so that the electrode material of the supercapacitor prepared by the invention achieves better effect.
Claims (6)
1. A preparation method of a supercapacitor electrode material is characterized by comprising the following steps:
(1) uniformly mixing bamboo scraps, a surfactant and water according to a mass ratio of 6: 0.3-0.6: 15, steaming, filtering, uniformly mixing filter residues and ethanol according to a mass ratio of 1:1, performing steam explosion, collecting an explosive, and heating the explosive at 300-350 ℃ to obtain pre-modified bamboo scraps;
(2) mixing the pre-modified bamboo chips with concentrated sulfuric acid according to the solid-liquid g/mL ratio of 3:7, stirring under the protection of nitrogen, discharging, filtering, washing, drying, and collecting the dried matter to obtain modified bamboo chips;
(3) taking 120-130 parts of water, 60-70 parts of modified bamboo chips, 20-25 parts of composite material and 10-15 parts of additive by weight, firstly putting the water, the modified bamboo chips and the additive into a reactor, and stirring under the protection of nitrogen;
(4) and after stirring, adding the composite material, heating, cooling, discharging, filtering, drying, collecting the dried material, uniformly mixing the dried material, aniline and hydrochloric acid solution according to the mass ratio of 7: 6-9: 20, stirring, adding an initiator 1-2 times of the mass of the aniline and an auxiliary agent 10-15% of the mass of the aniline, stirring for reaction, discharging, filtering, washing and drying to obtain the electrode material of the supercapacitor.
2. The preparation method of the electrode material of the supercapacitor, according to claim 1, wherein the surfactant in the step (1) is any one of cationic polyacrylamide and fatty alcohol-polyoxyethylene ether.
3. The preparation method of the electrode material of the supercapacitor, according to claim 1, characterized in that the additive in the step (3) is formed by mixing urea and oleamide according to a mass ratio of 9: 1.
4. The preparation method of the electrode material of the supercapacitor, according to claim 1, is characterized in that the composite material is prepared by mixing nickel nitrate, lanthanum nitrate and manganese nitrate according to a mass ratio of 7:3: 2-4.
5. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the initiator in the step (4) is any one of ammonium persulfate and sodium persulfate.
6. The method for preparing the electrode material of the supercapacitor according to claim 1, wherein the auxiliary agent in the step (4) is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585496A (en) * | 2011-01-11 | 2012-07-18 | 中国科学院过程工程研究所 | Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material |
| CN105321726A (en) * | 2014-07-21 | 2016-02-10 | 中国科学院大连化学物理研究所 | High-magnification active carbon and active graphene composite electrode material and preparation method thereof |
| CN106914265A (en) * | 2017-03-06 | 2017-07-04 | 南京师范大学 | A kind of method for preparing N doping porous nano carbon material as carbon source gel method with biomass |
| CN108557819A (en) * | 2018-05-30 | 2018-09-21 | 山东大学 | Garlic base waste prepares the methods and applications of porous carbon material |
| CN109126738A (en) * | 2018-08-09 | 2019-01-04 | 张剑 | A kind of preparation method of metal ion adsorbent |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585496A (en) * | 2011-01-11 | 2012-07-18 | 中国科学院过程工程研究所 | Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material |
| CN105321726A (en) * | 2014-07-21 | 2016-02-10 | 中国科学院大连化学物理研究所 | High-magnification active carbon and active graphene composite electrode material and preparation method thereof |
| CN106914265A (en) * | 2017-03-06 | 2017-07-04 | 南京师范大学 | A kind of method for preparing N doping porous nano carbon material as carbon source gel method with biomass |
| CN108557819A (en) * | 2018-05-30 | 2018-09-21 | 山东大学 | Garlic base waste prepares the methods and applications of porous carbon material |
| CN109126738A (en) * | 2018-08-09 | 2019-01-04 | 张剑 | A kind of preparation method of metal ion adsorbent |
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Application publication date: 20210416 |