CN103607795B - A kind of preparation method of Graphene heating film - Google Patents
A kind of preparation method of Graphene heating film Download PDFInfo
- Publication number
- CN103607795B CN103607795B CN201310637495.4A CN201310637495A CN103607795B CN 103607795 B CN103607795 B CN 103607795B CN 201310637495 A CN201310637495 A CN 201310637495A CN 103607795 B CN103607795 B CN 103607795B
- Authority
- CN
- China
- Prior art keywords
- graphene
- preparation
- heating film
- filter membrane
- filter
- 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
Abstract
The invention belongs to material with carbon element field, be specially a kind of preparation method of Graphene heating film.The methods such as ultrasonic and stirring are utilized to be dispersed in organic solvent by graphene powder, obtain the graphene solution that concentration is 0.05mg/ml ~ 0.5mg/ml, by the method for suction filtration, graphene uniform is covered on organic filter membrane or water system filter membrane, by the method for mechanical stripping, immersion or organic solvent dissolution, graphene film is separated with filter membrane again, obtain graphene film, graphene film adds top electrode, voltage is applied to it and can produce heat.The present invention utilizes the two-dimensional nanostructure of Graphene uniqueness, the characteristic of large radius-thickness ratio, high specific area, by above preparation technology, make between graphene sheet layer, to form the conductive network be evenly communicated with, applying can produce higher heat under lower voltage (1 ~ 10V).The advantages such as it is simple and easy to control that the present invention has preparation process, pollution-free, size adjustable, are applicable to large-scale production.
Description
Technical field
The invention belongs to material with carbon element field, be specially a kind of preparation method of Graphene heating film.
Background technology
Electric-heating technology has the remarkable advantages such as clean energy resource, thermal conversion efficiency is high, Pavement design is convenient, is widely used in fields such as modern architecture, heating engineering, decorations.For the inefficient shortcoming of traditional electric-heating technology, the high-performance carbon-based exothermic material of development low resistance, high-termal conductivity, high heat-resistant stability is just becoming the inexorable trend of future development.
Since first time in 2004 prepares Graphene, the physical property of Graphene excellence has attracted the extensive concern of numerous scholar.Graphene has excellent conductivity, and electron mobility is up to 2 × 10
5cm
2v
-1s
-1, about the material indium antimonide high twice more maximum than carrier mobility known at present.Meanwhile, the resistance value under Graphene room temperature only has 2/3rds of copper, and Graphene has very high radius-thickness ratio (up to more than 5000) and specific area, and (theoretical value is up to 2600m
2/ g), the two-dimension plane structure of Graphene makes it more easily form conductive network in the base than zero dimension or one-dimensional electric material.The performance of Graphene these excellences above-mentioned, makes it present good application prospect in field of electric heating, particularly transparent, pliable and tough thin film heater.
At present, the application report about graphene transparent conductive film display screen, vehicle window anti-icing equipment, heat insulation window and other heating systems out of doors has been had.Compared with carbon fiber felt heating element conventional at present, when graphene film is used for electric heating element, there is the machine-shaping characteristic of the resistivity of appropriateness, preferably thermal stability and excellence, more energy-efficient.The preparation technology that graphene film is conventional has hand brush, dipping, spraying, spin coating etc., but these complicated process of preparation and heating efficiency is low.
Summary of the invention
For existing conventional graphene film complicated process of preparation, shortcoming that heating efficiency is low; the object of the invention is a kind of preparation method of novel graphite alkene heating film; there is preparation process simple and easy to control, the advantages such as pollution-free, size adjustable, be applicable to large-scale production.
Technical scheme of the present invention is:
First a preparation method for Graphene heating film, is that raw material is made with Graphene, and graphene powder is in organic solvent dispersed, obtains the Graphene colloidal suspensions that concentration is 0.05mg/ml ~ 0.5mg/ml; Then, by the method for vacuum filtration, graphene uniform is covered on miillpore filter; Again by Graphene together with miillpore filter through natural drying or heat drying, then obtain uniform and stable Graphene heating film by the method for mechanical stripping, immersion or organic solvent dissolution; Graphene film adds top electrode, applies voltage and can produce heat.
The Graphene that described Graphene is intercalation stripping method, prepared by graphite oxidation reducing process or additive method.
The homodisperse method of described graphene powder is ultrasonic or stirs, and the ultrasonic disperse time is 5min ~ 80min.
Described organic solvent is DMF, ethanol, n-butanol, isopropyl alcohol or acetone.
The pressure limit of described vacuum filtration is 0.05MPa ~ 0.2MPa, and time range is 15min ~ 45min.
Described miillpore filter is organic filter membrane or water system filter membrane.
Described miillpore filter is Kynoar filter membrane, polyamide filter membrane, teflon membrane filter or mixed ester membranes, and the aperture of miillpore filter is 0.10 ~ 1.0 micron.
The surface density of described Graphene heating film is 10g/m
2~ 50g/m
2, thickness is 0.02mm ~ 0.20mm, and specific insulation is 0.005 Ω cm ~ 0.02 Ω cm, and surface resistivity is 0.5 Ω/sq ~ 3.0 Ω/sq.
Compared with prior art, tool of the present invention has the following advantages:
(1) the present invention is without the need to carrying out complicated process to raw material, and manufacture process is simple, is easy to operation, and product is more even simultaneously, good stability.And the size of product can be set according to actual needs.
(2) graphene film that prepared by the present invention is applied to field of electric heating, and compared with existing conventional material with carbon element Electric radiant Heating Film, heating is fast, and surface temperature is even and stable.
(3) the present invention adopts the method for suction filtration to prepare graphene film, compared with prior art, easy and simple to handle and heating efficiency is high, therefore has more advantage.
Accompanying drawing explanation
The electron scanning micrograph of Graphene of Fig. 1 for using in the embodiment of the present invention.
Fig. 2 is the electron scanning micrograph on the graphene film surface of preparation in the embodiment of the present invention 1 and embodiment 2.Wherein, (a) figure is embodiment 1; B () is embodiment 2.
Fig. 3 is the photo of graphene film prepared in the embodiment of the present invention 1.
The surface Scanning Electron microphotograph of carbon fiber felt of Fig. 4 for using in comparative example 1 of the present invention and comparative example 2.Wherein, (a) figure is comparative example 1; B () is comparative example 2.
Fig. 5 is the heating curve of comparative example 1, comparative example 2, embodiment 1 and embodiment 2 sample.Wherein, (a) figure is comparative example 1; B () is comparative example 2; C () figure is embodiment 1; D () is embodiment 2.
Embodiment
The preparation technology of Graphene heating film of the present invention is as follows: graphene powder is in organic solvent dispersed, and obtaining concentration is that 0.05mg/ml ~ 0.5mg/ml(is preferably 0.1mg/ml ~ 0.3mg/ml) Graphene colloidal suspensions; By the method for vacuum filtration, graphene uniform is covered on organic filter membrane or water system filter membrane, again after natural drying or heat drying, be separated graphene film and filter membrane by the method for mechanical stripping, immersion or organic solvent dissolution, obtain uniform and stable graphene film.Graphene film adds top electrode, applies voltage and can produce heat.
The present invention adopts conventional Vacuum filtration device, this device comprises: the filter flask of the Buchner funnel of 300ml, sintered glass filter, 1000ml ~ 2000ml and connect flexible pipe used, fixture, and vacuum pump used can be vacuum pump using circulatory water or oilless vacuum pump.Vacuum pump is connected with filter flask flexible pipe, miillpore filter is put on sintered glass filter, presses filter tunnel, clamp with clip, go up solution, connect vacuum-pump power supply, start suction filtration, the pressure limit of vacuum filtration is 0.05MPa ~ 0.2MPa, and the time is 15min ~ 45min.After suction filtration, first disconnect flexible pipe and put vacuum, then powered-down, and then take away filter flask.
As shown in Figure 1, the pattern feature of Graphene of the present invention and technical parameter as follows: Graphene has good laminated structure, because it has very large radius-thickness ratio (being greater than 1000), it is of a size of 0.5 ~ 50 μm, thickness 1 ~ 5nm, macroscopically show as shown in the figure curl form, be rendered as fluffy cluster-shaped.
The Graphene that described Graphene can be intercalation stripping method, prepared by graphite oxidation reducing process and additive method, the Graphene that the present invention uses is obtained through solid phase intercalation, high-temperature expansion by graphite powder, thickness 1 ~ 5nm, the number of plies≤10 layer, be of a size of 0.5 ~ 50 μm, purity >97%.Described organic solvent can be DMF, ethanol, n-butanol, isopropyl alcohol or acetone etc.Described preparation method is vacuum filtration, and described miillpore filter can be organic filter membrane or water system filter membrane.Described graphene film and the separation method of filter membrane can be the methods of mechanical stripping, immersion or organic solvent dissolution.
In order to be illustrated more clearly in technical scheme of the present invention, be described in further detail below in conjunction with embodiment and accompanying drawing.
Embodiment 1
The graphene powder taking 9.375mg is put in beaker, adds absolute ethyl alcohol reagent 50mL, ultrasonic disperse 1h, obtains the Graphene colloidal suspensions that concentration is the isotropic stable of 0.1875mg/mL.Be placed on the miillpore filter of Vacuum filtration device by Graphene colloidal suspensions, employing aperture is the Kynoar filter membrane of 0.45 μm, and the pressure of vacuum filtration is 0.08MPa, and the time is 15min.After suction filtration completes, graphene film is placed in 45 DEG C of dry 24h of drying box together with filter membrane, then adopts the method for mechanical stripping, obtain graphene film.As can be seen from Fig. 2 (a) and Fig. 3: the graphene film surface uniform that vacuum filtration obtains is smooth, lamella overlap joint closely.
The surface density of the graphene film utilizing the method to obtain is 15g/m
2, thickness is 0.05mm, and specific insulation is 0.0160 Ω cm, and surface resistivity is 2.0 Ω/sq.
Embodiment 2
Difference from Example 1 is, the graphene powder taking 18.750mg is put in beaker, adds DMF reagent 100mL, ultrasonic disperse 1h, obtains the Graphene colloidal suspensions that concentration is the isotropic stable of 0.1875mg/mL.Be placed on the miillpore filter of Vacuum filtration device by Graphene colloidal suspensions, employing aperture is the teflon membrane filter of 0.45 μm, and the pressure of vacuum filtration is 0.15MPa, and the time is 35min.After suction filtration completes, graphene film is placed in 100 DEG C of dry 38h of drying box together with filter membrane, then adopts the method for mechanical stripping, obtain graphene film, as can be seen from Fig. 2 (b): the graphene film surface uniform obtained is smooth, lamella overlap joint closely.
The surface density of the graphene film utilizing the method to obtain is 30g/m
2, thickness is 0.10mm, and specific insulation is 0.0090 Ω cm, and surface resistivity is 1.0 Ω/sq.
Embodiment 3
Difference from Example 1 is, the graphene powder taking 12.80mg is put in beaker, adds isopropyl alcohol reagent 100mL, ultrasonic disperse 1h, obtains the Graphene colloidal suspensions that concentration is the isotropic stable of 0.1280mg/mL.Graphene colloidal suspensions is placed on the miillpore filter of Vacuum filtration device, employing aperture is conventional mixed ester membranes (the CN-CA film of 0.22 μm, be made up of PAA-CN-CA, as: the WX type mixed cellulose ester microporous membrane of Shanghai Yan Sheng biochemical reagents Co., Ltd), the pressure of vacuum filtration is 0.10MPa, and the time is 25min.After suction filtration completes, graphene film is placed in 40 DEG C of dry 12h of drying box together with filter membrane, then adopts the method that acetone soln dissolves, obtain graphene film.
The surface density of the graphene film utilizing the method to obtain is 20.50g/m
2, thickness is 0.08mm, and specific insulation is 0.0120 Ω cm, and surface resistivity is 1.5 Ω/sq.
Embodiment 4
Difference from Example 1 is, the graphene powder taking 21.50mg is put in beaker, adds DMF reagent 100mL, ultrasonic disperse 1h, obtains the Graphene colloidal suspensions that concentration is the isotropic stable of 0.2150mg/mL.Be placed on the miillpore filter of Vacuum filtration device by Graphene colloidal suspensions, employing aperture is the teflon membrane filter of 0.45 μm, and the pressure of vacuum filtration is 0.20MPa, and the time is 45min.After suction filtration completes, graphene film is placed in 100 DEG C of dry 38h of drying box together with filter membrane, then adopts the method for mechanical stripping, obtain graphene film.
The surface density of the graphene film utilizing the method to obtain is 34.40g/m
2, thickness is 0.15mm, and specific insulation is 0.008 Ω cm, and surface resistivity is 2.3 Ω/sq.
Comparative example 1
Commercially available carbon fiber felt is shown in Fig. 4 (a), and mass area ratio is 15g/m
2.The thickness of carbon fiber felt is 0.34mm, and specific insulation is 0.3570 Ω cm, and surface resistivity is 10.5 Ω/sq.
Comparative example 2
Commercially available carbon fiber felt is shown in Fig. 4 (b), and mass area ratio is 30g/m
2.The thickness of carbon fiber felt is 0.51mm, and specific insulation is 0.3315 Ω cm, and surface resistivity is 6.5 Ω/sq.
Graphene used is in the above-described embodiments that Sichuan Jinlu Group Co., Ltd produces, the Graphene (Fig. 1) obtained through solid phase intercalation, high-temperature expansion by graphite powder.Carbon fiber felt used in comparative example is that Shenyang Yu Heng carbon fiber Co., Ltd produces (Fig. 4).Method of testing with reference to GB/T7287-2008, JG-T286-2010 measures the heating data of sample, and specimen size is that 25mm × 25mm(is as Fig. 3).The voltage that sample applies is 1V ~ 4V, as can be seen from Fig. 5 (a): comparative example 1(surface density is 15g/m
2carbon fiber felt) caloric value under applied voltage is less, when voltage is 4V, surface temperature is only 39 DEG C; As can be seen from Fig. 5 (b): comparative example 2(surface density is 30g/m
2carbon fiber felt) caloric value under applied voltage is still less relative to the graphene film prepared by the present invention, when voltage is 4V, surface temperature is only 60.5 DEG C; As can be seen from Fig. 5 (c): embodiment 1(surface density is 15g/m
2graphene film) surface temperature with the rule of curved rising heating time.At the energising initial stage, the surface temperature climbing speed of heater is very fast, along with the increase of conduction time, the surface temperature climbing speed change of heater reduces gradually, no longer change after reaching a certain stable temperature, when voltage is 4V, the stable temperature that embodiment 1 sample reaches is 96 DEG C; As can be seen from Fig. 5 (d): embodiment 2(surface density is 30g/m
2graphene film), its temperature changing regularity is similar with embodiment 1, and when voltage is 4V, the stable temperature reached is higher, is 118 DEG C.
Embodiment result shows, the present invention utilizes the two-dimensional nanostructure of Graphene uniqueness, the characteristic of large radius-thickness ratio, high specific area, by above preparation technology, make between graphene sheet layer, to form the conductive network be evenly communicated with, applying can produce higher heat under lower voltage (1 ~ 10V).The advantages such as it is simple and easy to control that the present invention has preparation process, pollution-free, size adjustable, are applicable to large-scale production.
Claims (7)
1. a preparation method for Graphene heating film, is characterized in that: first, is that raw material is made with Graphene, and graphene powder is in organic solvent dispersed, obtains the Graphene colloidal suspensions that concentration is 0.05mg/ml ~ 0.5mg/ml; Then, by the method for vacuum filtration, graphene uniform is covered on miillpore filter; Again by Graphene together with miillpore filter through natural drying or heat drying, then obtain uniform and stable Graphene heating film by the method for mechanical stripping, immersion or organic solvent dissolution; Graphene film adds top electrode, applies voltage and can produce heat; The surface density of described Graphene heating film is 10g/m
2~ 50g/m
2, thickness is 0.02mm ~ 0.20mm, and specific insulation is 0.005 Ω cm ~ 0.02 Ω cm, and surface resistivity is 0.5 Ω/sq ~ 3.0 Ω/sq.
2. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, described Graphene is Graphene prepared by intercalation stripping method or graphite oxidation reducing process.
3. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, the homodisperse method of described graphene powder is ultrasonic or stirs, and the ultrasonic disperse time is 5min ~ 80min.
4. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, described organic solvent is DMF, ethanol, n-butanol, isopropyl alcohol or acetone.
5. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, the pressure limit of described vacuum filtration is 0.05MPa ~ 0.2MPa, and time range is 15min ~ 45min.
6. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, described miillpore filter is organic filter membrane or water system filter membrane.
7. according to the preparation method of Graphene heating film according to claim 1, it is characterized in that, described miillpore filter is Kynoar filter membrane, polyamide filter membrane, teflon membrane filter or mixed ester membranes, and the aperture of miillpore filter is 0.10 ~ 1.0 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310637495.4A CN103607795B (en) | 2013-11-29 | 2013-11-29 | A kind of preparation method of Graphene heating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310637495.4A CN103607795B (en) | 2013-11-29 | 2013-11-29 | A kind of preparation method of Graphene heating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103607795A CN103607795A (en) | 2014-02-26 |
| CN103607795B true CN103607795B (en) | 2016-01-20 |
Family
ID=50125980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310637495.4A Active CN103607795B (en) | 2013-11-29 | 2013-11-29 | A kind of preparation method of Graphene heating film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103607795B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897093B (en) * | 2014-04-04 | 2016-03-30 | 武汉理工大学 | Graphene/polymkeric substance composite aquogel film and preparation method thereof |
| CN104219797B (en) * | 2014-09-10 | 2016-01-06 | 浙江碳谷上希材料科技有限公司 | A kind of Graphene Electric radiant Heating Film |
| CN104393165A (en) * | 2014-11-19 | 2015-03-04 | 国家纳米科学中心 | Nanometer carbon material thin film-based electro-thermal pump type actuator and preparation method thereof |
| CN104582177A (en) * | 2015-01-04 | 2015-04-29 | 哈尔滨天宝石墨科技发展有限公司 | Method for controlling cold area LED lamp with heating and cooling functions |
| CN104780630B (en) * | 2015-04-16 | 2017-01-04 | 成都扬中新能源科技有限公司 | A kind of Electric radiant Heating Film, electric hot plate and corresponding manufacture method |
| CN104894639B (en) * | 2015-06-10 | 2017-06-23 | 中国科学院上海微***与信息技术研究所 | A kind of method of the in-situ growth material based on the heating of graphene field effect pipe microcell |
| CN105188164A (en) * | 2015-09-30 | 2015-12-23 | 德阳烯碳科技有限公司 | Preparation method for graphene heating body |
| CN105696921B (en) * | 2016-04-01 | 2017-05-03 | 无锡市翱宇特新科技发展有限公司 | Heat insulation window |
| JP6884023B2 (en) * | 2016-04-15 | 2021-06-09 | 三菱製紙株式会社 | Heat-generating sheet and heat-release adhesive sheet using it |
| CN106304435B (en) * | 2016-11-07 | 2019-03-26 | 泉州信和石墨烯研究院有限公司 | A kind of waterproof Electric radiant Heating Film and its production method based on graphene |
| CN106744831B (en) * | 2016-11-24 | 2018-08-10 | 湖北大学 | A kind of reusable redox graphene base photothermal conversion film and its preparation method |
| CN106732738B (en) * | 2017-02-15 | 2019-08-06 | 东华大学 | A kind of graphene/g-C3N4Three-dimensional network laminated film and its preparation and application |
| CN107446408A (en) * | 2017-07-18 | 2017-12-08 | 德阳烯碳科技有限公司 | PTC graphenes heating ink and preparation method thereof and its heating film prepared |
| CN108756127A (en) * | 2018-05-31 | 2018-11-06 | 石家庄邦迪高分子材料有限公司 | Far infrared, negative oxygen ion, fast-assembling graphene heating floor |
| CN108811206A (en) * | 2018-06-27 | 2018-11-13 | 四川省安德盖姆石墨烯科技有限公司 | A kind of graphene euthermic chip production method |
| CN109068413A (en) * | 2018-07-20 | 2018-12-21 | 江苏三六石墨烯科技有限公司 | The preparation method of graphite composite film, the graphite composite film being obtained by this method and its application |
| CN109152113B (en) * | 2018-09-20 | 2022-02-01 | 广东烯创科技有限公司 | Graphene-based electrothermal film, preparation method thereof, electric heating sheet and electric heating equipment |
| CN110089801B (en) * | 2019-05-24 | 2021-07-02 | 湖南云亭烯新材料科技有限公司 | Graphite alkene pressure-sensitive shoes that generate heat |
| CN110194910A (en) * | 2019-06-17 | 2019-09-03 | 新奥石墨烯技术有限公司 | Electric heating ink and preparation method thereof with low-work voltage and farsighted infrared emittance |
| CN110473670B (en) * | 2019-07-09 | 2021-03-09 | 广东工业大学 | Method for manufacturing nano conductive film |
| CN111432508A (en) * | 2020-04-15 | 2020-07-17 | 威海无缝新材料有限公司 | Graphene fast heating film and preparation method thereof |
| CN112291868B (en) * | 2020-09-14 | 2021-12-14 | 兰州大学 | Self-annealing graphene self-supporting high-temperature electrothermal film and preparation method thereof |
| CN112804775A (en) * | 2021-01-18 | 2021-05-14 | 安徽宇航派蒙健康科技股份有限公司 | Method for preparing electrothermal film by adopting transparent graphene |
| CN115849361A (en) * | 2023-01-10 | 2023-03-28 | 南京信息工程大学 | Graphene oxide felt and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383898A (en) * | 2012-05-04 | 2013-11-06 | 海洋王照明科技股份有限公司 | Preparing method of graphene paper current collector |
-
2013
- 2013-11-29 CN CN201310637495.4A patent/CN103607795B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383898A (en) * | 2012-05-04 | 2013-11-06 | 海洋王照明科技股份有限公司 | Preparing method of graphene paper current collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103607795A (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103607795B (en) | A kind of preparation method of Graphene heating film | |
| CN109956466B (en) | Graphene-based composite film with high thermal conductivity in-plane direction and thickness direction and preparation method thereof | |
| CN107592685B (en) | A method of preparing double heating layer graphene Electric radiant Heating Films | |
| CN103864062B (en) | Preparation method of graphene transparent conductive film | |
| CN108455574B (en) | Preparation method of flexible three-dimensional porous graphene/polydimethylsiloxane composite friction nano generator | |
| CN109293962B (en) | Preparation method of silver selenide/nylon flexible composite film with high thermoelectric performance | |
| CN102674321A (en) | Graphene foam with three dimensional fully connected network and macroscopic quantity preparation method thereof | |
| CN103613096B (en) | Low-cost method for preparing graphene macroform | |
| CN106847767A (en) | A kind of graphite Copper Foil heat sink compound | |
| CN107556510B (en) | Preparation method of flexible sensor electrode | |
| WO2015131505A1 (en) | Method for preparing tubular graphene composite membrane | |
| CN104973596A (en) | Hetero atom-doped hollow spherical grapheme composite material, and preparation method and applications thereof | |
| CN108047806B (en) | graphene/Ag-carbon microsphere aerogel coating and preparation method and application thereof | |
| CN110212194A (en) | A kind of preparation method and applications of one-dimensional MOF@ZIF core-shell structure | |
| CN109455702A (en) | A kind of preparation method of graphene heating film | |
| CN102755950A (en) | Method for preparing graphene coating and graphene coating prepared according to method | |
| CN105084345A (en) | Graphene material powder and preparation method | |
| CN103723708A (en) | Preparation method of organic single-layer graphene solution | |
| CN102585174A (en) | Method for preparing graphene/ poly (3,4-ethylenedioxythiophene) complex nano material | |
| CN107129752A (en) | A kind of graphene nano silver wire composite mortar and preparation method thereof | |
| CN105898981A (en) | Stretchable electrode based on conductive fabric and preparation method thereof | |
| CN104973590A (en) | Method of preparing high-heat-conductive and high-electric-conductive thin film through dispersion of high-quality graphite powder and graphene with graphene oxide | |
| CN103625085A (en) | Method for quickly preparing large-area graphene foam/polymer fiber three-dimensional network composite foam film | |
| CN108039283B (en) | A kind of rich N doping multi-stage porous carbon material and the preparation method and application thereof based on in-situ polymerization | |
| CN103258658A (en) | Preparation method of supercapacitor electrode based on functional-form graphene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |