CN113053557B - Conductive electrode material, preparation method thereof and conductive electrode - Google Patents
Conductive electrode material, preparation method thereof and conductive electrode Download PDFInfo
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- CN113053557B CN113053557B CN202110256293.XA CN202110256293A CN113053557B CN 113053557 B CN113053557 B CN 113053557B CN 202110256293 A CN202110256293 A CN 202110256293A CN 113053557 B CN113053557 B CN 113053557B
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- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
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- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
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- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
Abstract
The embodiment of the application discloses a conductive electrode material, a preparation method thereof and a conductive electrode, wherein the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is graphene, and the inner layer is a silver nanowire. In the application, the conductive electrode material is formed by coating the silver nanowires with the graphene oxide or the reduced graphene oxide, so that the conductivity and the light transmittance of the conductive electrode are improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a conductive electrode, a preparation method thereof and the conductive electrode.
Background
Transparent conductive electrode materials are important components of electronic devices. The transparent conductive electrode material applied to the flexible electronic device comprises graphene, carbon nano tubes, 3, 4-ethylene dioxythiophene polymer, metal grids, silver nanowires and the like. The silver nanowires have good mechanical properties and light transmittance, and the conductivity is better than that of graphene, carbon nanotubes, indium tin oxide and the like, so at present, the transparent conductive electrode material usually adopts the silver nanowires, but the current preparation process of the silver nanowires is complex, the silver nanowires are extremely easy to oxidize, and the conductivity, the transmittance, the humidity resistance and the mechanical properties of the oxidized silver nanowires are reduced, so that the performance of electronic devices is influenced.
Disclosure of Invention
The embodiment of the application provides a conductive electrode material, a preparation method thereof and a conductive electrode, so as to improve the performance of the conductive electrode.
The embodiment of the application provides a conductive electrode material, conductive electrode material includes skin and inlayer, outer cladding the inlayer, the skin is graphite alkene, the inlayer is the silver nano wire.
Optionally, in some embodiments of the present application, the silver nanowires have a length of 5 nm to 30 nm.
Optionally, in some embodiments of the present application, the graphene is selected from graphene oxide and reduced graphene oxide.
Correspondingly, the embodiment of the application also provides a preparation method of the conductive electrode material, which comprises the following steps:
providing graphene and silver nanowires; and
and reacting the graphene with the silver nanowires to form a conductive electrode material, wherein the conductive electrode material comprises an outer layer and an inner layer, the inner layer is coated by the outer layer, the outer layer is made of graphene, and the inner layer is made of silver nanowires.
Optionally, in some embodiments of the present application, in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the step includes:
the graphene is graphene oxide, and the graphene oxide is processed to form a graphene oxide dispersion liquid;
reacting the graphene oxide dispersion liquid with the silver nanowires under the action of a catalyst, wherein the graphene oxide dispersion liquid forms a reduced graphene oxide dispersion liquid under the action of the catalyst, and the reduced graphene oxide dispersion liquid is formed to cover the conductive electrode material of the silver nanowires;
the catalyst comprises one or a combination of several of p-4-nitrophenol, thiourea dioxide, carbohydrazide alkali liquor and sodium citrate.
Optionally, in some embodiments of the present application, in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the step of:
the graphene is graphene oxide, and the graphene oxide is dispersed in a first dispersing agent to form a graphene oxide dispersion liquid, wherein the first dispersing agent comprises one or a combination of ethylene glycol, glycerol and isopropanol;
dispersing the silver nanowires in a second dispersing agent to form silver nanowire dispersion liquid, wherein the second dispersing agent comprises one or a combination of more of methylbenzene, aniline, ethylbenzene, mesitylene, benzaldehyde, diphenyl ether, dimethylbenzene, diethylbenzene and chlorobenzene;
reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid to form a first intermediate product;
and carrying out centrifugal separation treatment on the first intermediate product to form the conductive electrode material.
Optionally, in some embodiments of the present application, the concentration of the graphene oxide dispersion is 0.5 grams per liter to 5 grams per liter, and the concentration of the silver nanowire dispersion is 0.2 grams per liter to 20 grams per liter.
Optionally, in some embodiments of the present application, in the step of reacting the graphene and the silver nanowire to form the conductive electrode material, a mass ratio of the graphene and a mass ratio of the silver nanowire have a correspondence relationship of 1-5:80-150.
Optionally, in some embodiments of the present application, in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the step includes:
the graphene is graphene oxide, and the graphene oxide and the silver nanowires are reacted to form a second intermediate product;
and carrying out heat treatment on the second intermediate product, wherein the graphene oxide is subjected to heat treatment to form reduced graphene oxide, and the conductive electrode material of the silver nanowire coated by the reduced graphene oxide is formed.
Optionally, in some embodiments of the present application, the temperature of the heat treatment is 300 to 800 degrees celsius.
Accordingly, embodiments of the present application also provide a conductive electrode, which includes the conductive electrode material as described above.
The embodiment of the application discloses a conductive electrode material, a preparation method thereof and a conductive electrode, wherein the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is graphene, and the inner layer is a silver nanowire. In the application, the conductive electrode material is formed by coating the silver nanowires with the graphene, so that the conductivity and the light transmittance of the conductive electrode are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a scanning electron microscope image of a conductive electrode material provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of a method for preparing a conductive electrode material according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a method for manufacturing a conductive electrode according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device. In the present application, the term "reacting" is used to refer to both physical and chemical reactions.
The embodiment of the application provides a conductive electrode material, a preparation method thereof and a conductive electrode. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
Referring to fig. 1, fig. 1 is a scanning electron microscope image of a conductive electrode material according to an embodiment of the present disclosure. The present application provides a conductive electrode material. The conductive electrode material comprises an outer layer and an inner layer, wherein the outer layer is coated with the inner layer, the outer layer is graphene, and the inner layer is a silver nanowire.
In one embodiment, the silver nanowires are 5 nanometers to 30 nanometers in length. Specifically, the silver nanowires may have a length of 8 nm, 10 nm, 15 nm, 20 nm, 27 nm, 29 nm, or the like.
In an embodiment, the graphene is selected from graphene oxide and reduced graphene oxide. The graphene oxide refers to graphene having an oxidizing property. The reduced graphene oxide means that graphene having an oxidizing property is reduced to form graphene having a reducing property.
In the application, the conductive electrode material is formed by coating the silver nanowires with graphene oxide or reduced graphene oxide, so that the silver nanowires are not easy to oxidize, and the oxidation resistance and the conductivity of the conductive electrode are improved.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a method for preparing a conductive electrode material according to an embodiment of the present disclosure. The application also provides a preparation method of the conductive electrode material. The preparation method of the conductive electrode material comprises the following steps:
providing graphene and silver nanowires; and
the graphene and the silver nanowires are reacted to form the conductive electrode material, the conductive electrode material comprises an outer layer and an inner layer, the outer layer wraps the inner layer, the outer layer is made of graphene, and the inner layer is made of silver nanowires.
In one embodiment, the step of reacting the graphene and the silver nanowire to form the conductive electrode material includes:
the graphene is graphene oxide, and the graphene oxide is processed to form a graphene oxide dispersion liquid.
And then, reacting the graphene oxide dispersion liquid with the silver nanowire under the action of a catalyst, and forming a reduced graphene oxide dispersion liquid by the graphene oxide dispersion liquid under the action of the catalyst to form a conductive electrode material with the silver nanowire coated by the reduced graphene oxide dispersion liquid.
The catalyst comprises one or more of p-4-nitrophenol, thiourea dioxide, carbohydrazide alkali liquor and sodium citrate.
Specifically, the graphene is graphene oxide, and the graphene oxide is dispersed in ethylene glycol to form a graphene oxide dispersion liquid; then, reacting the graphene oxide dispersion liquid with the silver nanowires under the condition of p-4-nitrophenol, wherein the graphene oxide dispersion liquid is reduced under the condition that the p-4-nitrophenol is converted into 4-ammonium phenol due to the oxidability of the graphene oxide, so that reduced graphene oxide dispersion liquid is formed; and then, forming the conductive electrode material of the silver nanowire coated by the reduced graphene oxide.
In one embodiment, the graphene is graphene oxide, and the graphene oxide is dispersed in glycerol to form a graphene oxide dispersion liquid; then, reacting the graphene oxide dispersion liquid with the silver nanowires under thiourea dioxide, wherein the graphene oxide dispersion liquid is reduced under the thiourea dioxide due to the oxidability of the graphene oxide to form a reduced graphene oxide dispersion liquid; and then, forming the conductive electrode material of the silver nanowire coated by the reduced graphene oxide.
In one embodiment, the graphene is graphene oxide, and the graphene oxide is dispersed in ethanol to form a graphene oxide dispersion liquid; then, reacting the graphene oxide dispersion liquid with the silver nanowires under sodium citrate, wherein the graphene oxide dispersion liquid is reduced under the sodium citrate due to the oxidability of the graphene oxide to form a reduced graphene oxide dispersion liquid; and then, forming the conductive electrode material of the silver nanowire coated by the reduced graphene oxide.
In the application, a conductive electrode material of the silver nanowire coated by the reduced graphene oxide is formed by the silver nanowire with reducibility and the graphene oxide with oxidability by using a redox method, so that a compact reduced graphene oxide layer is formed on the surface of the silver nanowire, the density of the reduced graphene oxide layer is up to 90% -99%, the silver nanowire has good stability, the oxidation resistance of the silver nanowire is improved, and the conductivity, the light transmittance, the humidity resistance and the mechanical property of the conductive electrode are improved.
In one embodiment, the step of reacting the graphene and the silver nanowire to form the conductive electrode material includes:
the graphene is graphene oxide, and the graphene oxide is dispersed in the first dispersing agent to form a graphene oxide dispersion liquid.
Then, the silver nanowires are dispersed in a second dispersing agent to form a silver nanowire dispersion.
And then, reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid to form a first intermediate product.
And then, carrying out centrifugal separation treatment on the first intermediate product to form a conductive electrode material, wherein the second dispersing agent comprises one or a combination of more of toluene, aniline, ethylbenzene, mesitylene, benzaldehyde, diphenyl ether, xylene, diethylbenzene and chlorobenzene.
In one embodiment, the concentration of the graphene oxide dispersion is between 0.5 grams per liter and 5 grams per liter and the concentration of the silver nanowire dispersion is between 0.2 grams per liter and 20 grams per liter.
Specifically, the graphene is graphene oxide, and the graphene oxide is dispersed in ethylene glycol to form a graphene oxide dispersion liquid with a concentration of 0.5 g/l to 5 g/l, in this embodiment, the concentration of the graphene oxide dispersion liquid is 1 g/l; then, dispersing the silver nanowires in toluene to form silver nanowire dispersion with a concentration of 0.2-20 grams per liter, in this example, the concentration of the silver nanowire dispersion is 6 grams per liter; then, reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid for 2 hours to form a first intermediate product; then, the first intermediate product is subjected to a centrifugal separation process to form a conductive electrode material.
In one embodiment, after the centrifugal separation process is performed on the first intermediate product, the method further includes:
and adding methanol into the first intermediate product and stirring to form the conductive electrode material. The stability of the silver nanowires is further improved, the oxidation resistance of the silver nanowires is further improved, and the conductivity, the light transmittance, the humidity resistance and the mechanical property of the conductive electrode are further improved.
In one embodiment, the graphene is graphene oxide, and the graphene oxide is dispersed in isopropanol to form a graphene oxide dispersion liquid with a concentration of 3.5 grams per liter; then, dispersing the silver nanowires in xylene to form silver nanowire dispersion liquid with the concentration of 10.2 grams per liter; then, reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid for 3 hours to form a first intermediate product; then, the first intermediate product is subjected to a centrifugal separation process to form a conductive electrode material.
In an embodiment, after the centrifuging the first intermediate product, the method further includes:
adding isopropanol into the first intermediate product and stirring to form the conductive electrode material. The stability of the silver nanowires is further improved, the oxidation resistance of the silver nanowires is further improved, and the conductivity, the light transmittance, the humidity and heat resistance and the mechanical property of the conductive electrode are further improved.
In one embodiment, the graphene is graphene oxide, and the graphene oxide is dispersed in glycerol to form a graphene oxide dispersion liquid with a concentration of 4 grams per liter; then, dispersing the silver nanowires in benzaldehyde to form silver nanowire dispersion liquid with the concentration of 18 grams per liter; then, reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid for 3.5 hours to form a first intermediate product; then, the first intermediate product is subjected to a centrifugal separation process to form a conductive electrode material.
In an embodiment, after the centrifuging the first intermediate product, the method further includes:
and adding ethanol into the first intermediate product and stirring to form the conductive electrode material. The stability of the silver nanowires is further improved, the oxidation resistance of the silver nanowires is further improved, and the conductivity, the light transmittance, the humidity and heat resistance and the mechanical property of the conductive electrode are further improved.
In the application, the silver nanowires and the graphene oxide are reacted by a solution stirring method to form the conductive electrode material of the silver nanowires coated by the graphene oxide, so that a compact graphene oxide layer is formed on the surface of the silver nanowires, the density is up to 90% -99%, the silver nanowires have good stability, the oxidation resistance of the silver nanowires is improved, and the conductivity, the light transmittance, the humidity and heat resistance and the mechanical property of the conductive electrode are further improved.
In one embodiment, in the step of reacting graphene and silver nanowires to form the conductive electrode material, the mass ratio of the graphene to the silver nanowires is 1-5:80-150.
In one embodiment, the step of reacting the graphene and the silver nanowire to form the conductive electrode material includes:
the graphene is graphene oxide, and the graphene oxide and the silver nanowires are reacted to form a second intermediate product.
And then, carrying out heat treatment on the second intermediate product, and carrying out heat treatment on the graphene oxide to form reduced graphene oxide so as to form the conductive electrode material of the silver nanowire coated by the reduced graphene oxide.
In one embodiment, the temperature of the heat treatment is 300 to 800 degrees Celsius.
Specifically, silver nanowire powder with a certain mass is weighed, graphene oxide powder is added, and the mass ratio of the graphene oxide to the silver nanowire is controlled to be 1-5:80-150, in this embodiment, the mass ratio of graphene oxide to silver nanowire is 2:100; then, grinding and fully mixing to form a second intermediate product; and (3) carrying out heat treatment on the second intermediate product in an argon atmosphere, so that the graphene oxide is subjected to a reduction reaction, the generated reduced graphene oxide is attached to the surface of the silver nanowire, and a prefabricated product is formed, wherein the heat treatment temperature is 300-800 ℃, and the heat treatment time is 1-24 hours, in the embodiment, the heat treatment temperature is 350 ℃, and the heat treatment time is 15 hours.
Then, centrifugally cleaning the prefabricated product, and after centrifugal cleaning, performing freeze drying to obtain high-purity powder, wherein the freeze drying time is 12 hours to 64 hours, and the freeze drying temperature is minus 10 ℃ to minus 25 ℃, in the embodiment, the freeze drying time is 18 hours, and the freeze drying temperature is minus 20 ℃; and then, adding glycerol, adding a proper amount of additive succinic acid, stirring and dispersing to obtain a stable reduced graphene oxide coated silver nanowire solution, namely, obtaining the conductive electrode material.
In one embodiment, the additive comprises one or more of polyvinylpyrrolidone, succinic acid, citric acid, methanol, ethanol, isopropanol, and deionized water.
In one embodiment, silver nanowire powder with a certain mass is weighed, graphene oxide powder is added, and the mass ratio of graphene oxide to silver nanowire is controlled to be 4:90, respectively; then, grinding and fully mixing to form a second intermediate product; and (3) carrying out heat treatment on the second intermediate product in a helium atmosphere to enable graphene oxide to carry out reduction reaction, attaching the generated reduced graphene oxide to the surface of the silver nanowire to form a prefabricated product, wherein the heat treatment temperature is 460 ℃, and the heat treatment time is 20 hours.
Then, centrifugally cleaning the prefabricated product, and freeze-drying the centrifugally cleaned product to obtain high-purity powder, wherein the freeze-drying time is 30 hours, and the freeze-drying temperature is-15 ℃; and then adding ethylene glycol, adding a proper amount of additive polyvinylpyrrolidone, stirring and dispersing to obtain a stable reduced graphene oxide coated silver nanowire solution, namely the conductive electrode material.
In one embodiment, silver nanowire powder with a certain mass is weighed, graphene oxide powder is added, and the mass ratio of graphene oxide to silver nanowire is controlled to be 1.5:140; then, grinding and fully mixing to form a second intermediate product; and (3) carrying out heat treatment on the second intermediate product in an argon atmosphere to enable graphene oxide to carry out reduction reaction, attaching the generated reduced graphene oxide to the surface of the silver nanowire to form a prefabricated product, wherein the heat treatment temperature is 730 ℃, and the heat treatment time is 23 hours.
Then, centrifugally cleaning the prefabricated product, and freeze-drying the centrifugally cleaned prefabricated product to obtain high-purity powder, wherein the freeze-drying time is 62 hours, and the freeze-drying temperature is 24 ℃ below zero; and then adding glycerol, and simultaneously adding a proper amount of additive deionized water, stirring and dispersing to obtain a stable reduced graphene oxide coated silver nanowire solution, namely the conductive electrode material.
In the application, a thermal reduction method is adopted to enable the reduced graphene oxide to form a compact reduced graphene oxide layer on the surface of the silver nanowire, the compactness of the reduced graphene oxide layer is as high as 90% -99%, the silver nanowire has good stability, the oxidation resistance of the silver nanowire is improved, and the conductivity, the light transmittance, the humidity and heat resistance and the mechanical property of the conductive electrode are further improved.
The preparation method of the conductive electrode material is simple to operate, the formed conductive electrode material has good oxidation resistance, and the density of graphene oxide or reduced graphene oxide on silver nanowires is as high as 90% -99%, so that the silver nanowires have good stability, the oxidation resistance of the silver nanowires is improved, and the conductivity, the light transmittance, the humidity resistance and the mechanical property of the conductive electrode are further improved.
The present application also provides a conductive electrode, wherein the conductive electrode 10 comprises a conductive electrode material, and the conductive electrode material is the conductive electrode material described above in the present application.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a method for manufacturing a conductive electrode according to an embodiment of the present disclosure. Spin coating the prepared conductive electrode material solution by a spin coater, wherein the spin coating speed is 400 to 2500 rpm, the first spin coating time is 2 to 10 seconds, the second spin coating time is 2 to 10 seconds, and specifically, the spin coating speed can be 500, 800, 1200, 1900, 2300 or 2400 rpm, and the like; spin coating the conductive electrode material solution on the substrate layer 20 to obtain a prefabricated film; then, pre-baking and post-baking curing are performed on the prefabricated film at 40-120 ℃, so as to obtain the flexible transparent substrate 30 with the conductive electrode 10, specifically, the baking temperature may be 50 ℃, 86 ℃, 100 ℃, 110 ℃, and the like.
The embodiment of the application discloses a conductive electrode material, a preparation method thereof and a conductive electrode. In the application, the conductive electrode material is formed by coating the silver nanowires with the graphene oxide or the reduced graphene oxide, so that the conductivity, the light transmittance, the humidity and heat resistance and the mechanical property of the conductive electrode are improved.
The conductive electrode material, the preparation method thereof and the conductive electrode provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (7)
1. A method for preparing a conductive electrode material, comprising:
providing graphene and silver nanowires, wherein the lengths of the silver nanowires are 5-30 nanometers; and
reacting the graphene and the silver nanowires to form a conductive electrode material, wherein the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is the graphene, and the inner layer is the silver nanowires;
in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the method includes:
the graphene is graphene oxide, and the graphene oxide is treated to form a graphene oxide dispersion liquid;
reacting the graphene oxide dispersion liquid with the silver nanowires under a catalyst, wherein the graphene oxide in the graphene oxide dispersion liquid forms reduced graphene oxide under the catalyst, and the reduced graphene oxide coats the silver nanowires to form a conductive electrode material;
the catalyst comprises 4-nitrophenol.
2. A method for preparing a conductive electrode material, comprising:
providing graphene and silver nanowires, wherein the length of each silver nanowire is 5-30 nanometers; and
reacting the graphene and the silver nanowires to form a conductive electrode material, wherein the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is the graphene, and the inner layer is the silver nanowires;
in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the method includes:
the graphene is graphene oxide, and the graphene oxide is dispersed in a first dispersing agent to form a graphene oxide dispersion liquid, wherein the first dispersing agent comprises one or a combination of ethylene glycol, glycerol and isopropanol;
dispersing the silver nanowires in a second dispersing agent to form silver nanowire dispersion liquid, wherein the second dispersing agent comprises one or a combination of more of methylbenzene, aniline, ethylbenzene, mesitylene, benzaldehyde, diphenyl ether, dimethylbenzene, diethylbenzene and chlorobenzene;
reacting the graphene oxide dispersion liquid with the silver nanowire dispersion liquid to form a first intermediate product;
and carrying out centrifugal separation treatment on the first intermediate product to form a conductive electrode material, and adding methanol/isopropanol/ethanol into the first intermediate product and stirring after carrying out centrifugal separation treatment on the first intermediate product.
3. The method for preparing a conductive electrode material according to claim 2, wherein the concentration of the graphene oxide dispersion is 0.5 g/l to 5 g/l, and the concentration of the silver nanowire dispersion is 0.2 g/l to 20 g/l.
4. A method for preparing a conductive electrode material, comprising:
providing graphene and silver nanowires, wherein the length of each silver nanowire is 5-30 nanometers; and
reacting the graphene and the silver nanowires to form a conductive electrode material, wherein the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is the graphene, and the inner layer is the silver nanowires;
in the step of reacting the graphene and the silver nanowire to form the conductive electrode material, the mass ratio of the graphene and the mass ratio of the silver nanowire have a correspondence relationship of 1-5:80-150;
in the step of reacting the graphene and the silver nanowire to form a conductive electrode material, the method includes:
the graphene is graphene oxide, and the graphene oxide and the silver nanowires are reacted to form a second intermediate product;
carrying out heat treatment on the second intermediate product, wherein the graphene oxide is subjected to heat treatment to form reduced graphene oxide, and a prefabricated product of the silver nanowire coated by the reduced graphene oxide is formed;
wherein the time of the heat treatment is 15 hours to 24 hours;
centrifugally cleaning the prefabricated product, and freeze-drying the product after centrifugal cleaning to obtain the conductive electrode material of the silver nanowire coated by the reduced graphene oxide;
wherein the temperature of the freeze drying is minus 10 ℃ to minus 25 ℃.
5. The method for preparing a conductive electrode material according to claim 4, wherein the temperature of the heat treatment is 300 to 800 ℃.
6. A conductive electrode material, characterized in that it is produced by the production method according to any one of claims 1 to 5;
the conductive electrode material comprises an outer layer and an inner layer, the outer layer coats the inner layer, the outer layer is the graphene, and the inner layer is the silver nanowires; the graphene is arranged on the surface of the silver nanowire;
the graphene is selected from graphene oxide and reduced graphene oxide.
7. A conductive electrode comprising a conductive electrode material produced by the production method according to any one of claims 1 to 5.
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