Graphene is known as "black gold", "king of new materials", and even as "black technology that will completely change the 21st century". Research around graphene has been going on, especially in energy batteries.
In particular, the battery life of smart phones and the rise of new energy electric vehicles have accelerated the application of graphene in this area. Graphene has excellent properties, especially as one of the materials with the highest known strength. It also has good toughness and can be bent. The theoretical Young's modulus of graphene is 1.0TPa and the inherent tensile strength is 130GPa. . In addition, the carrier mobility of graphene at room temperature is about 15000cm2/(V·s), which is more than 10 times that of silicon materials, and is currently known as the highest carrier mobility material indium antimonide ( InSb) more than twice. Under certain conditions, such as low temperature, the carrier mobility of graphene can even reach as high as 250,000 cm2/(V·s).
Any application of these characteristics will be a technology that will subvert the current industry: For example, the transparency, conductivity and flexibility of graphene can be used in the field of electronic devices to realize flexible touch screens, and mobile phones can be folded like a watch; The impermeability and conductivity of graphene can be applied to protective coatings and barrier films; the flexibility, transparency and high sensitivity response of graphene to a variety of physical signals can be made into sensors and used in multifunctional electronic skin; Use graphene as electrode material to improve the performance of energy storage devices.
As early as 2016, Huawei began to develop graphene fast charging technology. At the 57th Japan Battery Conference, Huawei’s Watt Laboratory announced a major research breakthrough in the field of lithium-ion batteries and launched the industry’s first high-temperature long-life Graphene-based lithium-ion battery. Experimental research results show that the new high-temperature resistant technology based on graphene can increase the upper limit of the use temperature of lithium-ion batteries by 10°C, and the service life is twice that of ordinary lithium-ion batteries. And the charging rate is 40% higher than that of ordinary mobile phones. Foreign research institutions have developed a lithium battery cathode material for mobile phones that can be charged at a high speed of 20 seconds through graphene. Even mobile phone screens with higher flexibility can be made.
On October 22 this year, Zeng Xuezhong, president of the mobile phone department of Xiaomi Group, said that the Xiaomi Mi 10 Extreme Edition uses graphene technology. Under 120W high-power charging, the Xiaomi Mi 10 Extreme Edition battery charge and discharge cycles 800 times Capacity ≥90%. In other words, after using the Mi 10 Extreme Commemorative Edition for two years, the battery capacity is still above 90%, which greatly exceeds the national recommended battery life standard. Thanks to the many advantages of graphene, the Xiaomi Mi 10 Extreme Commemorative Edition achieves a fast charge of up to 120W, which can fully charge a 4500mAh battery in 23 minutes.
On September 7, GAC Group's first internal incubation technology innovation company-GZJW Technology Research Co., Ltd. has completed the registration. The company has a registered capital of 58.82 million yuan, led by GAC Group, and jointly funded by GAC Capital, the graphene technical team of GAC Research Institute, and a third-party strategic partner holding platform. Huang Xiangdong, the former deputy general manager of GAC Group and the first president of GAC Research Institute, serves as the chairman of the new company, focusing on promoting technological changes in the fields of new energy and new materials.
Following BYD's blade battery, GAC New Energy has made great strides in the field of power batteries. GAC has stated that related tests have been completed for the graphene material "super fast charge battery". Based on graphene’s excellent electrical conductivity and special three-dimensional structure, a super fast charging battery was developed. It can be charged to 80% in 8 minutes. The charging time is equivalent to the refueling time of traditional fuel vehicles. At the same time, it can be charged for 10 minutes, The battery life is 200-300 kilometers. At present, GAC has preliminarily verified graphene technology from multiple levels of batteries, modules, and vehicles. It is foreseeable that once mass production is achieved, it will set off a technological revolution in power batteries in the new energy vehicle industry and further solve the pain of charging pure electric vehicles. According to industry insiders, this is the first time that a domestic car company has announced that it will install graphene-based batteries on mass-produced passenger cars. "Although there are not many details announced, this represents the determination of Chinese car companies to focus on power batteries and new energy vehicles."
SHYL New Energy Technology Co., Ltd. is a comprehensive supplier focusing on the R&D, production, sales and solutions of high-performance lithium battery anode materials (silicon-oxy-carbon SiOC, silicon-carbon SiC, porous silicon-carbon and artificial graphite, etc.), sharing through channels , R&D cooperation, process supporting, etc. have realized industrial synergy in the key business value chain.
The currently developed silicon-based anode materials and low-cost high-performance artificial graphite anode materials are at the leading domestic level and are cost-effective. The company has successively established joint R&D and testing centers with Shanghai University, Shanghai Jiaotong University and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. It has also cooperated with Shanghai Mitsui Vacuum Equipment Co., Ltd. and Shanghai University (Zhejiang·Jiaxing) Emerging Industry Research Institute for industrialization joint ventures.