Graphene is called a miraculous material because of its high electrical conductivity, high thermal conductivity and high strength. It has a large number of applications that can be completely changed, from light bulbs to chips, from batteries to touch screens, from smart phones to new energy vehicles ...The following are some of the latest applications of graphene.
1. Graphene battery
In battery production, graphene can be used directly as a positive and negative electrode material, or as a conductive additive for positive and negative information, and can be used as a coating to improve battery power characteristics. The problems of charging and driving distance have been plagued by new energy vehicles, because the development of lead-acid batteries and traditional lithium-ion batteries has encountered a bottleneck, and graphene batteries are expected to make breakthroughs. At the recent Shanghai Auto Show, some automobile companies introduced a graphene lithium titanate battery that can be quickly charged in 10-15 minutes, with more than 40,000 charge and discharge times and a driving range of more than 1,000 kilometers.
2. Graphene integrated circuits
Graphene has ultra-high electron transfer ability and excellent thermal conductivity, which is expected to replace the currently widely used silicon and become the basis of the next generation of integrated circuits. In 2010, a group of researchers in the United States fabricated the first graphene transistor and integrated it into an integrated circuit. In 2016, Chinese scientists developed the first low-noise amplification monolithic integrated circuit.
3.Graphene touch screen
The most critical component of a smart phone is a conductive, very transparent touch screen. Graphene's excellent flexibility, conductivity and optical transparency perfectly meet this requirement, which is better than the current indium tin oxide (ITO) electrode data . Researchers in South Korea have produced flexible displays made of multilayer graphene and polyester substrates, graphene-based solar cells, touch sensors, flat panel displays, organic light-emitting diodes, etc.
4. The memory of graphene
Researchers in the UK and South Korea are also working on developing a flexible and transparent storage system based on go. According to the new type of graphene storage data, low cost, low power consumption, light weight, small size, high storage density, and can be three-dimensional accumulation. For example, the graphene titanium dioxide developed in the UK is only 50 nanometers long and 8 nanometers thick, and can be read and written within 5 nanoseconds. With the development of graphene-based electronic devices (such as touch screens and memory), the future of flexible and fully visible smartphones will become a reality.
5.Graphene super data
US researchers converted a layer of two-dimensional graphene into a three-dimensional graphene foam, and then reinforced it with carbon nanotubes with high mechanical strength and good conductivity, thereby turning the soft graphite into a strong steel bar. Our researchers use tiny graphene tubes to form a foam material that is as light as a balloon and as strong as metal. One day it can be used to make body armor, tank armor, and so on.
Cancer is diagnosed early
Scientists in my country have discovered for the first time that graphene helps to identify cancer early. When an abnormal situation occurs in the body, the content of cmocroRNA, which is a nucleic acid molecular marker, will also change in serum, urine and saliva, but it is difficult to capture it with general detection methods. The strong adsorption capacity of graphene can greatly improve the detection sensitivity. Through a comprehensive analysis of the captured cmocroRNA, it can be determined whether there is cancer in the body and what kind of cancer, which is of great significance for the early diagnosis and treatment of various cancers.
7. Graphene artificial throat
The human voice can only make a sound, but cannot feel it. If there is a material that can sense and emit sound at the same time, and is flexible enough to make an artificial throat, it can solve the problem of muscular dystrophy patients like Hawking, and even the deaf. Recently, Chinese researchers used porous graphene data to develop this integrated acoustic device, which emits sound through the thermoacoustic effect and receives sound signals through the piezoresistive effect.
8. Graphene bulb
Now the traditional incandescent bulbs have been gradually replaced by white LEDs. Although LED lighting has low energy consumption and good effects, the price is high, and the production requires rare earth elements as the original information. In the UK, scientists have developed a new type of graphene bulb, which is stronger in structure and cheaper than LED bulbs, allowing it to last longer and reduce energy consumption by 10%.
9. Seawater desalination filter membrane
Current desalination methods require a lot of energy, are costly, and have a negative impact on the environment. British researchers are working on a relatively inexpensive graphene oxide filter for seawater desalination. This is a membrane that allows water molecules to pass through and salt ions to filter out. It does not require high temperature and pressure, and is a low-cost alternative to desalination.
10. Graphene purification sponge
Scientists use the high surface area of graphene sponge to absorb toxic and harmful substances, which can weigh up to 100 times their own weight, and then recycle them. Chinese scientists evenly coat graphene on the surface of ordinary sponges, using its conductive, hydrophobic, and lipophilic properties to absorb oil spills on the sea.