CN113200544B - Preparation method of biomass charcoal-based supercapacitor electrode material - Google Patents
Preparation method of biomass charcoal-based supercapacitor electrode material Download PDFInfo
- Publication number
- CN113200544B CN113200544B CN202110403821.XA CN202110403821A CN113200544B CN 113200544 B CN113200544 B CN 113200544B CN 202110403821 A CN202110403821 A CN 202110403821A CN 113200544 B CN113200544 B CN 113200544B
- Authority
- CN
- China
- Prior art keywords
- electrode material
- biomass
- preparation
- supercapacitor electrode
- carbon
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- 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
-
- 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
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting 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
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- 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
- C01B32/30—Active carbon
- C01B32/354—After-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
A preparation method of a biomass carbon-based supercapacitor electrode material relates to a preparation method of an electrode material. The biomass co-carbonization composite porous carbon material has the advantages of controllable pore structure, narrow pore size distribution, obviously improved pore specific surface area, stable electrical property and the like. The prepared biomass composite carbon-based activated carbon has rich and adjustable pore structures, shows excellent electrochemical performance, has good charge-discharge performance, good cycle stability and good capacity retention rate when being used as a capacitor electrode material, and has wide application value in the aspects of commercial supercapacitors and the like.
Description
Technical Field
The invention relates to a preparation method of an electrode material, in particular to a preparation method of a biomass charcoal-based supercapacitor electrode material.
Background
Along with the continuous acceleration of the global industrialization process, the world population is continuously increased, the traditional fossil energy is irreversibly consumed, the serious environmental pollution problem is brought, the global temperature is warmed, the sea level is increased, and the like, the problems are more serious year by year, and the alternative renewable energy is urgently needed to be searched. The emergence of environmentally friendly energy sources such as wind energy, solar energy, nuclear energy, and biological energy has brought a boon to global energy problems, but the supply of energy is limited to natural environments, and therefore it is important to develop clean renewable energy sources and portable energy storage devices to solve the current energy problems.
The super capacitor has the advantages of high power density, high charging/discharging speed, long cycle life, wide working temperature range and the like, and is widely applied to the fields of electronic communication, electric power traffic systems, aerospace and the like. The super capacitor can be divided into a double electric layer super capacitor and a Faraday pseudocapacitor according to an energy storage mechanism, the double electric layer super capacitor mainly stores energy through physical electrostatic absorption/desorption of electrolyte ions, and most of electrode materials are carbon materials.
The biomass carbon material is widely concerned due to wide sources, low cost, environmental protection and rich carbon nitrogen phosphorus, and the biomass activated carbon has a graphite microcrystal structure, a developed pore structure, a large specific surface area and excellent adsorbability, is beneficial to ion transmission and diffusion, and promotes charge transfer and mass transfer processes in an electrochemical process. The pore structure of the carbon material is modified at a microscopic level, so that the mass transfer process is accelerated, and the reports of improving the electrochemical performance of the carbon material are few.
At present, biomass carbon materials are rich in sources but are not reasonably utilized.
At present, few documents are reported about the surface structure of the pore structure of the biomass carbon material and micromolecular sugar co-carbonization regulating material and the application of the surface structure to the performance research of electrochemical capacitors.
Disclosure of Invention
The invention aims to provide a preparation method of a biomass charcoal-based supercapacitor electrode material, aims to develop a preparation method of a biomass composite porous carbon material, carbonizes and activates the biomass charcoal material, prepares porous biomass activated carbon by modifying and modifying micromolecular sugar, and realizes a method for preparing porous carbon with excellent electrochemical performance by biomass co-carbonization regulation and control. The method is applied to the field of super capacitors, and provides a new breakthrough point for the application of the biomass carbon material in the field of energy storage.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a biomass charcoal-based supercapacitor electrode material comprises the following steps:
1) Washing a biomass raw material with deionized water and 1 mol/L hydrochloric acid for multiple times, drying, then placing the biomass raw material in a tubular furnace, and carbonizing the biomass raw material in a nitrogen environment to obtain carbonized rhizobium;
2) Mixing the carbonized carbon material with KOH according to a certain mass ratio, heating to 600-1000 ℃ in nitrogen flow for activation, washing with 1 mol/L hydrochloric acid and distilled water after the activation is finished, and drying to obtain an activated carbon material;
3) And mixing the activated carbon material and the micromolecular sugar according to a certain proportion, and co-carbonizing in a tubular furnace in a nitrogen atmosphere to obtain the biomass-based activated carbon and micromolecular sugar co-carbonized supercapacitor electrode material.
According to the preparation method of the biomass charcoal-based supercapacitor electrode material, the biomass charcoal source comprises walnut shells, hazelnut shells, rhizobia, bagasse, corn straws and shaddock peels.
According to the preparation method of the biomass carbon-based supercapacitor electrode material, the medium and small molecular sugar comprises glucose, fructose, maltose series, glucan, starch sugar, sucrose and lactose.
According to the preparation method of the biomass carbon-based supercapacitor electrode material, the mass ratio of the carbon material to KOH is 1-4, nitrogen is introduced at the rate of 10-80L/min, the heating rate is 1-5 ℃/min, the material is heated at 500-1000 ℃ and is kept for 1-3 h, and finally the material is cooled to room temperature at the rate of 1-10 ℃/min.
According to the preparation method of the biomass carbon-based supercapacitor electrode material, nitrogen is introduced at a speed of 10-80L/min under the condition of nitrogen flow, the heating rate is 1-5 ℃/min, the temperature is increased to 300-500 ℃, the temperature is kept for 1-3 h, and finally the temperature is reduced to room temperature at a speed of 1-10 ℃/min.
According to the preparation method of the biomass carbon-based supercapacitor electrode material, the mass ratio of the biomass carbon material to KOH is 1-4, nitrogen is introduced at the rate of 10-80L/min, the heating rate is 1-5 ℃/min, the biomass carbon-based supercapacitor electrode material is heated at 500-1000 ℃ and is kept warm for 1-3 h, and finally the biomass carbon-based supercapacitor electrode material is cooled to room temperature at the rate of 1-10 ℃/min.
The preparation method of the biomass carbon-based supercapacitor electrode material has the drying temperature of 50-100 ℃ and the drying time of 8-24 h.
The preparation method of the biomass carbon-based supercapacitor electrode material comprises the following steps of (1) feeding a mass ratio of the active carbon material to small molecular sugar of 1 to 50, feeding nitrogen at a speed of 10 to 80L/min, heating to 300 to 600 ℃ at a heating speed of 1 to 5 ℃/min, keeping the temperature for 8 to 24 hours, and finally cooling to room temperature at a speed of 1 to 10 ℃/min.
The invention has the advantages and effects that:
1. the invention adopts low-cost biomass as a raw material and low-molecular-weight sugar for modification, and has simple preparation process and easy operation. The prepared biomass composite carbon-based activated carbon has rich and adjustable pore structures, shows excellent electrochemical performance, and has wide application value in the aspects of commercial supercapacitors and the like.
2. According to the novel method for preparing the porous carbon through biomass carbon co-carbonization and the application technology of the biomass composite porous carbon as the capacitor electrode material, the biomass co-carbonization composite porous carbon material has the advantages of controllable pore structure, narrow pore size distribution, obvious improvement on pore specific surface area, stable electrical property and the like. The composite material used as a capacitor electrode material has good charge and discharge performance, cycle stability and capacity retention rate.
Drawings
FIG. 1 is a Scanning Electron Microscope (SEM) image of the walnut shell-based supercapacitor electrode material of the invention;
FIG. 2 is a Scanning Electron Microscope (SEM) image of the supercapacitor electrode material after the co-carbonization of the activated walnut shells and sucrose according to the invention;
FIG. 3 is a Scanning Electron Micrograph (SEM) of a carbonized glucose supercapacitor electrode material of the present invention;
FIG. 4 is a Scanning Electron Microscope (SEM) image of the Rhizobium carbonteum supercapacitor electrode material of the present invention;
FIG. 5 is a Scanning Electron Microscope (SEM) image of an activated rhizobium and glucose composite supercapacitor electrode material of the present invention;
FIG. 6 is a Scanning Electron Microscope (SEM) image of the activated corn stover and lactose compounded supercapacitor electrode material of the present invention;
FIG. 7 is a Scanning Electron Microscope (SEM) image of the electrode material of the activated shaddock peel and maltose combined supercapacitor;
FIG. 8 is a constant current charge-discharge diagram (GCD) of the supercapacitor electrode material after the co-carbonization of the activated walnut shells and sucrose according to the invention;
FIG. 9 is a constant current charge-discharge diagram (GCD) of the activated corn stalk and lactose co-carbonized supercapacitor electrode material according to the present invention;
FIG. 10 is a constant current charge-discharge diagram (GCD) of the electrode material of the activated shaddock peel and maltose combined supercapacitor;
FIG. 11 is a diagram of constant current charge and discharge (GCD) of the electrode material of the activated rhizobium and glucose composite supercapacitor according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
Example 1
Drying and crushing walnut shells, washing the walnut shells for multiple times by using deionized water and 1 mol/L hydrochloric acid, and drying. Putting a proper amount of walnut shells into a quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, heating the quartz boat to 300 ℃ at a heating rate of 3 ℃/min, and carbonizing the quartz boat for 90 min to obtain carbonized walnut shells.
Mixing KOH and carbonized walnut shells according to the mass ratio of alkali to carbon of 2. And (2) putting the mixture into a quartz boat, activating in a tubular furnace under the protection of nitrogen, heating to 600 ℃ at the heating rate of 3 ℃/min, activating for 1 h, cooling to room temperature at the heating rate of 2 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to neutrality, and drying to obtain the activated carbon material.
Uniformly mixing activated walnut shells and cane sugar in a mass ratio of 30.
Mixing a carbon material: acetylene black: PTFE (mass ratio: 8.
Example 2
Washing the melon seed shells with deionized water and 1 mol/L hydrochloric acid for multiple times, and drying. Putting a proper amount of the melon seed shells into a quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, raising the temperature to 350 ℃ at the heating rate of 5 ℃/min, and carbonizing the quartz boat for 100 min to obtain carbide.
Mixing KOH and the carbonized sunflower seed shells according to the mass ratio of alkali to carbon of 3. And (2) putting the mixture into a quartz boat, activating in a tubular furnace under the protection of nitrogen, heating to 600 ℃ at the heating rate of 3 ℃/min, activating for 90 min, cooling to room temperature at the heating rate of 5 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to be neutral, and drying to obtain the activated carbon material.
Uniformly mixing activated melon seed shell carbon and maltose according to the mass ratio of 50.
Mixing a carbon material: acetylene black: PTFE (mass ratio: 8.
Example 3
The rhizobia is washed for a plurality of times by deionized water and 1 mol/L hydrochloric acid and dried. And (3) putting a proper amount of rhizobia into the quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, raising the temperature to 350 ℃ at the rate of 1 ℃/min, and carbonizing the quartz boat for 120 min to obtain the carbonized rhizobia.
Mixing KOH and rhizobium carbide according to the mass ratio of alkali to carbon of 2. And (2) putting the mixture into a quartz boat, activating in a tube furnace under the protection of nitrogen, heating to 700 ℃ at the heating rate of 3 ℃/min, activating for 60 min, cooling to room temperature at the heating rate of 6 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to be neutral, and drying to obtain the activated carbon material.
Uniformly mixing activated rhizobia and glucose in a mass ratio of 15.
Mixing a carbon material: acetylene black: PTFE (mass ratio: 8.
Example 4
Washing bagasse with deionized water and 1 mol/L hydrochloric acid for multiple times, and drying. Putting a proper amount of bagasse into a quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, raising the temperature to 400 ℃ at the heating rate of 10 ℃/min, and carbonizing the quartz boat for 120 min to obtain the carbonized bagasse.
Mixing KOH and the carbonized bagasse according to the mass ratio of alkali to carbon of 2. And (2) putting the mixture into a quartz boat, activating in a tube furnace under the protection of nitrogen, heating to 800 ℃ at the heating rate of 5 ℃/min, activating for 120 min, cooling to room temperature at the heating rate of 1 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to neutrality, and drying to obtain the activated carbon material.
Uniformly mixing activated bagasse and fructose in a mass ratio of 5.
Mixing a carbon material: acetylene black: PTFE (mass ratio: 8.
Example 5
Crushing the corn straws, washing the corn straws for multiple times by using deionized water and 1 mol/L hydrochloric acid, and drying the corn straws. And (3) putting a proper amount of crushed corn straws into a quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, raising the temperature to 500 ℃ at a heating rate of 4 ℃/min, and carbonizing the quartz boat for 60 min to obtain the carbonized corn straws.
Mixing KOH and carbonized corn straws according to the mass ratio of alkali to carbon of 1. And (2) putting the mixture into a quartz boat, activating in a tube furnace under the protection of nitrogen, heating to 750 ℃ at the heating rate of 3 ℃/min, activating for 60 min, cooling to room temperature at the heating rate of 4 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to be neutral, and drying to obtain the activated carbon material.
The method comprises the following steps of uniformly mixing activated corn straws and lactose in a mass ratio of 20.
Mixing a carbon material: acetylene black: PTFE (mass ratio: 8.
Example 6
Crushing the shaddock peel, washing for many times by using deionized water and 1 mol/L hydrochloric acid, and drying. Putting a proper amount of shaddock peel into a quartz boat, putting the quartz boat into a tube furnace, carbonizing the quartz boat in a nitrogen environment, raising the temperature to 300 ℃ at the rate of 2 ℃/min, and carbonizing the quartz boat for 90 min to obtain carbonized shaddock peel.
Mixing KOH and carbonized shaddock peel according to the mass ratio of alkali to carbon of 5. And (2) putting the mixture into a quartz boat, activating in a tube furnace under the protection of nitrogen, heating to 650 ℃ at the heating rate of 3 ℃/min, activating for 150 min, cooling to room temperature at the heating rate of 3 ℃/min, washing with 1 mol/L hydrochloric acid solution, performing suction filtration, washing with distilled water in a suction filtration manner, washing to be neutral, and drying to obtain the activated carbon material.
Uniformly mixing activated shaddock peel and maltose according to the mass ratio of 2.
Mixing a carbon material: acetylene black: PTFE (mass ratio 8.
Claims (3)
1. A preparation method of a biomass charcoal-based supercapacitor electrode material is characterized by comprising the following steps:
1) Washing a biomass raw material with deionized water and 1 mol/L hydrochloric acid for multiple times, drying, then placing in a tubular furnace, and carbonizing in a nitrogen environment to obtain a carbonized carbon material;
2) Mixing the carbonized carbon material with KOH according to a certain mass ratio, heating to 600-1000 ℃ in nitrogen flow for activation, washing with 1 mol/L hydrochloric acid and distilled water after the activation is finished, and drying to obtain an activated carbon material;
3) And mixing the activated carbon material and the micromolecular sugar according to a certain proportion, and co-carbonizing in a tubular furnace in a nitrogen atmosphere to obtain the biomass-based activated carbon and micromolecular sugar co-carbonized supercapacitor electrode material.
2. The preparation method of the biomass charcoal-based supercapacitor electrode material according to claim 1, wherein the biomass raw material comprises walnut shells, hazelnut shells, rhizobia, bagasse, corn stalks and shaddock peels.
3. The preparation method of the biomass charcoal-based supercapacitor electrode material according to claim 1, wherein the small molecular sugar comprises glucose, fructose, maltose series, dextran, starch sugar, sucrose, lactose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110403821.XA CN113200544B (en) | 2021-04-15 | 2021-04-15 | Preparation method of biomass charcoal-based supercapacitor electrode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110403821.XA CN113200544B (en) | 2021-04-15 | 2021-04-15 | Preparation method of biomass charcoal-based supercapacitor electrode material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113200544A CN113200544A (en) | 2021-08-03 |
| CN113200544B true CN113200544B (en) | 2022-10-18 |
Family
ID=77026954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110403821.XA Active CN113200544B (en) | 2021-04-15 | 2021-04-15 | Preparation method of biomass charcoal-based supercapacitor electrode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113200544B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979435A (en) * | 2021-11-17 | 2022-01-28 | 厦门理工学院 | Biochar and application thereof in catalyzing sodium persulfate to degrade 4-chlorophenol |
| CN114709084A (en) * | 2022-04-21 | 2022-07-05 | 中南林业科技大学 | Electrode based on construction of porous carbon skeleton in wood tracheid, preparation method and supercapacitor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228583A (en) * | 2007-03-16 | 2008-10-02 | Seiko Instruments Inc | Method for decomposing cellulose and method for producing glucose |
| CN101892107A (en) * | 2010-07-28 | 2010-11-24 | 中国林业科学研究院林产化学工业研究所 | Preparation method of high fixed carbon content molding charcoal |
| CN102583311A (en) * | 2012-02-07 | 2012-07-18 | 北京林业大学 | Method for preparing biomass carbon by utilizing agricultural and forestry waste |
| CN105914372B (en) * | 2016-06-24 | 2019-03-22 | 陕西科技大学 | A kind of three-dimensional porous biomass carbon nano material and preparation method and application prepared using pomace |
| US10829420B2 (en) * | 2016-07-22 | 2020-11-10 | The Regents Of The University Of Colorado, A Body Corporate | Filamentous organism-derived carbon-based materials, and methods of making and using same |
| KR20200042689A (en) * | 2018-10-16 | 2020-04-24 | 우석대학교 산학협력단 | Manufacturing Method of Activated Carbon using Kenaf |
-
2021
- 2021-04-15 CN CN202110403821.XA patent/CN113200544B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113200544A (en) | 2021-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105761950B (en) | A kind of preparation method of porous rich nitrogen carbon fiber electrode | |
| CN113200544B (en) | Preparation method of biomass charcoal-based supercapacitor electrode material | |
| CN102244250A (en) | Graphene macroscopic body/tin oxide composite lithium ion battery anode material and process thereof | |
| WO2019233357A1 (en) | Carbon-based negative electrode material with high ramp capacity, and preparation method therefor and use thereof | |
| CN108862235A (en) | A kind of hollow hard carbon material of threadiness and preparation method thereof can be used for sodium-ion battery cathode | |
| AU2020101283A4 (en) | Method for Manufacturing Straw-Based Activated Carbon Electrode Material for Super Capacitor with Energy Storage Efficiency Enhanced Through Acid Mine Drainage | |
| CN113307254A (en) | Method for preparing three-dimensional porous graphene sheet by using low-temperature double-salt compound and application | |
| CN111137890A (en) | Preparation method of biomass hierarchical pore nano-ring microstructure carbon-based supercapacitor electrode material | |
| CN112239201A (en) | Method for preparing nitrogen-sulfur double-doped porous carbon through one-step carbonization | |
| CN112079352B (en) | Preparation method and application of biomass-based porous nitrogen-doped carbon material | |
| CN111834130A (en) | Collapsed carbon-based nano cage electrode material and preparation method thereof | |
| CN109003828B (en) | Porous biomass charcoal electrode material derived from wheat straw and preparation method thereof | |
| CN110589823A (en) | Shaddock peel porous carbon material and preparation method and application thereof | |
| CN107154498B (en) | Preparation method and application of microporous carbon structure electrode material prepared from plant material | |
| CN112635199A (en) | Multistage-structured MXene @ double-activated fir composite material electrode and preparation method and application thereof | |
| Ajay et al. | Influence of various activated carbon based electrode materials in the performance of super capacitor | |
| CN111968863A (en) | Preparation method of rare earth composite biomass-based capacitance carbon material | |
| CN116514094A (en) | Preparation method and application of battery anode carbon material | |
| CN113044839B (en) | Preparation method and application of hierarchical porous carbon material | |
| CN112290025B (en) | Preparation method of electrode material based on carbonized kelp and lithium-sulfur battery | |
| CN115285991A (en) | Method for generating hierarchical porous carbon based on self-assembly of biomass derivative and application thereof | |
| CN109887759B (en) | Preparation method of nitrogen-loaded self-template activated carbon electrode material for supercapacitor | |
| CN114291806A (en) | Multi-scale regulation and control method for graphitization degree of low-order coal-based porous carbon | |
| CN105655153A (en) | Preparation method of self-supported capacitor electrode material | |
| CN111924842A (en) | Lotus stalk-based electrode material and preparation method 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 |