In recent years, with the development of new energy vehicles and mobile communication devices, the use of graphene to improve, enhance the performance of power, and energy storage battery materials is becoming the focus of attention in the industry. Some agencies expect that the market size of graphene applications within 10 years can reach more than 1 trillion yuan.
â– There is currently no so-called "graphene battery"
“The mixing of graphene materials with traditional battery materials can significantly increase the battery charge and discharge, cycle life, etc., and become the key to victory for power battery companies in a new round of market competition. It is undeniable that the research and development of graphene application process innovation has always been a constraint on China’s battery. If the relevant industries achieve industrial upgrading, if graphene can effectively increase the power battery capacity and achieve rapid charging, it will directly attack the pain points of the large-scale promotion of the power battery, and it is of great significance to the industrial upgrading of the lead-acid battery industry. Look, the power battery or will be the opportunity for large-scale application of graphene.†Zhao Meng, Deputy Secretary-General of China International Graphene Industry Resources Alliance, said in an interview with the China Economic Times.
It is understood that there are three main application forms 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 and improved. Electrode conductivity and charge-discharge rate; Third, as a current collector or current collector coating, used to improve battery power characteristics.
Zhao Meng believes that the current application of graphene in lithium-ion batteries takes the latter two approaches. Since graphene is directly used as a negative electrode material, its surface characteristics are easily affected by external influences, the stability is extremely poor, and there are problems such as low efficiency for the first time, and it is difficult to satisfy the performance requirements of lithium ion batteries. Lithium-ion batteries, as an important part of the strategic emerging industries of new energy vehicles, are hot spots that investors are focusing on. The addition of graphene to the lithium-ion power battery can reduce the internal resistance of the battery to the minimum, effectively solving the technical bottleneck that hinders the rapid charging of the lithium battery product, and at the same time greatly prolonging the service life of the battery. From the performance point of view, the graphene lithium battery is charged once, which takes no more than 10 minutes; the lithium battery capacity per unit of mass is increased from the current 0.1 kWh/kg to 1-15 kWh/kg, and the battery weight is also acceptable. Reduce more than 90%.
"But exactly, there is currently no so-called 'graphene battery'." Zhao Meng stressed.
â– 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. Graphene has huge market and business opportunities in every segment of the automotive industry. In the automotive sector, 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 automotive tires, graphene conductive tires can effectively derive static electricity from the car, to avoid car fires and deflagration. In addition, the tires with graphene material added have twice the life of ordinary tires and can improve tire wear resistance, puncture resistance, and shoulder clearance. In the field of automotive lubricants, as a new type of lubricating additive, graphene has excellent mechanical properties, and can adsorb a layer of graphene protective film on the surface of the friction pair to provide highly efficient wear and abrasion resistance.
“The application of graphene to power batteries should be based on market demand, focusing on key technologies and solving key problems. It should integrate innovative elements such as production, learning, research and use to build a broader platform for the development and innovation of the entire industry chain. In addition, it will actively cooperate with new energy vehicle companies, and will be able to promote graphene materials in the development of battery accessory products for electric logistics vehicles, transport vehicles, taxis and other special vehicles, market development, and capital cooperation. Application in the field of new energy," Zhao Meng emphasized.
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