The main application areas of graphene
(1) Application in the field of electrochemistry
Graphene is a carbon material with a layered grid structure. It has excellent electrical conductivity, chemical stability and thermal stability. It can be used in supercapacitors, lithium-ion batteries, sodium-ion batteries, lead-acid batteries, lithium-sulfur batteries, metal-air batteries, etc.
In the future, how to use cheap raw materials and simple processes to achieve high-quality product production and give full play to the unique structural advantages of graphene for different electrochemical energy storage devices will be a research hotspot.
(2) Application in the field of photocatalytic materials
Graphene has excellent electrical conductivity, electron transport properties, high specific surface area and other properties.
(3) Application in the field of corrosion-resistant coatings
Graphene coatings not only have the cathodic protection of epoxy zinc-rich coatings and the shielding properties of glass flake coatings, but also have excellent adhesion, waterproofness and toughness.
(4) Application in the biomedical field
Because the surface of GO contains a large number of oxygen-containing functional groups (-OH, -COOH, etc.), it can make it have good hydrophilicity, and the two-dimensional GO has good biocompatibility, so it has potential application prospects in biomedical fields such as drug loading and gene delivery.
(5) Application in the field of sensors
Graphene has excellent physical and chemical properties such as high specific surface area, high conductivity and biocompatibility, which is conducive to improving the adsorption capacity of sensitive molecules and increasing the rate of biochemical reactions. These excellent properties make it an ideal candidate material for preparing sensors.
(6) Application in the field of integrated circuits
Graphene has good thermal conductivity and thermal stability, and can be introduced into silicon-based circuits to achieve the purpose of improving rapid heat dissipation.
(7) Application in the field of solar cells
Graphene, as a unique two-dimensional gapless semiconductor, has properties such as high charge carrier mobility and high specific surface area. The prepared film also has high optical transparency, conductivity and flexibility. Therefore, graphene has a wide range of applications in the electron transport layer, hole transport layer, buffer layer, counter electrode, etc. in solar cells.
(8) Application in the field of nanocomposites
Graphene can be combined with other materials of different properties to form composite materials due to its loose porous structure, high conductivity and high material strength. With excellent properties such as high strength, high elastic modulus, high specific surface area and stability, the mechanical properties of materials can be effectively improved or enhanced.
(9) Application in the field of electromagnetic microwave absorption
Graphene not only has a unique physical and chemical structure and excellent mechanical and electromagnetic properties, but also has good microwave absorption properties. In addition, it can be combined with magnetic nanoparticles to prepare a new type of absorbing material. This material has both magnetic loss and electrical loss and has potential application prospects in the fields of electromagnetic shielding and microwave absorption.
(10) Application in other fields
The oxygen-containing functional groups on GO can be adsorbed with the active sites of cotton fabrics. Loading GO on cotton fabrics can effectively improve the antibacterial and UV protection properties of the fabrics.
Graphene is considered to be an ideal hydrogen storage material because of its excellent performance, large specific surface area and ultra-high mechanical strength.