In recent years, with the development of new energy vehicles and mobile communication equipment, the use of graphene to improve, improve the performance of power and energy storage battery materials is becoming the focus of attention in the industry. Some institutions expect that the market for graphene applications in 10 years can reach more than one trillion yuan.
There is currently no such thing as "graphene battery"
"Graphene materials mixed with traditional battery materials can significantly improve battery charge and discharge, cycle life, etc., and become the key to the success of power battery companies in the new round of market competition. It is undeniable that the innovation and development of graphene application process has been restricting China's batteries. The related industry realizes the problem of industrial upgrading. If graphene can effectively improve the power battery capacity and achieve fast charging, it will directly attack the pain point of large-scale promotion of power battery, and it is of great significance to the industrial upgrading of lead-acid battery industry. From this level Look, the power battery will be an opportunity for the scale application of graphene." Zhao Meng, deputy secretary general of China International Graphene Industry Resource Alliance, said in an interview with the China Economic Times reporter.
It is understood that there are three main applications of graphene in the field of batteries: one is directly used as a positive/negative material; the other is used as a conductive additive, added to the positive/negative electrode material, or the composite material is modified to improve the electrode material. Electrode conductivity and charge and discharge rate; third, as a current collector or current collector coating, used to improve battery power characteristics.
Zhao Meng believes that at present, the application of graphene on lithium-ion batteries mainly adopts the latter two methods. Because graphene is directly used as a negative electrode material, its surface characteristics are easily affected by the outside world, the stability is extremely poor, and there are problems such as low efficiency for the first time, and it is difficult to meet the performance requirements of lithium ion batteries. As an important part of the emerging energy industry strategy of lithium-ion batteries, lithium-ion batteries are a hot spot for investors to pay attention to. The addition of graphene to the lithium battery, which can minimize the internal resistance of the battery, effectively solves the technical bottleneck that hinders the rapid charging of the lithium battery product, and greatly prolongs the battery life. From the performance point of view, the graphene lithium battery is charged once and takes less than 10 minutes; the unit mass of lithium battery capacity is increased from the current about 0.1 kWh/kg to 1-15 kWh/kg, and the battery weight can also be Reduce by more than 90%.
"But to be precise, there is currently no so-called 'graphene battery'." Zhao Meng stressed.
Graphene is widely used in the automotive field
“The application of graphene in the automotive field involves tires, LED lamps, glass, lubricants, graphene bodies, etc. In every segment of the automotive industry, graphene has huge market and business opportunities. In the automotive field, graphite Alkenes can be said to be widely used and can show their talents." Zhao Meng said.
It is reported that in the field of automobile tires, graphene conductive static tires can effectively extract static electricity from automobiles and avoid automobile fire and deflagration. In addition, tires incorporating graphene materials have twice the life of ordinary tires and can improve the wear resistance, puncture resistance, and shoulder space of the tires. In the field of automotive lubricants, as a new lubricant addition material, graphene has excellent mechanical properties, and can adsorb a layer of graphene protective film on the surface of the friction pair to provide high-efficiency anti-wear and anti-wear properties.
"The application of graphene on power batteries should be driven by market demand, focusing on and cracking key technologies and outstanding problems; gathering innovative elements such as production, learning, research and use, and building a broader platform for the development and innovation of the entire industry chain; And actively cooperate with new energy vehicle manufacturers. In the development of battery supporting products, market development, capital cooperation, etc. of electric logistics vehicles, transport vehicles, taxis and other special vehicles, achieving strong alliance will boost graphene materials. Application in the field of new energy." Zhao Meng stressed.
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