Can graphene be a breakthrough for lithium electrical materials?

Recently, Zhejiang Xilian Nano Technology Co., Ltd. invested 160 million yuan for the construction of a three-element positive material project for graphene lithium-ion batteries. The project covers an area of 40 acres. Upon completion of the project, an annual production capacity of 6000T/a graphene lithium-ion battery cathode material will be formed.

Prior to this, the Gao Ming team of Zhejiang University developed a new type of aluminum-graphene battery, which can be recharged in a matter of seconds. After the cycle is filled with 250,000 times, it is still full of electricity, and it shows that it is heat-resistant and antifreeze, and repeated bending does not affect functions. Excellent features show a common use prospect.

Since the beginning of this year, the market has been hot on graphene materials, and many manufacturers and research institutions have tried more and more applications of graphene as a new battery material. He Shiguo, head of the olefinic nano project, once said that the battery positive electrode material of olefin nano is the core technology of pure electric vehicle battery. So, will graphene be a breakthrough in lithium battery materials? Can you provide one more solution for the problems encountered with current lithium-ion batteries?

Graphene lithium batteries are emerging

Graphene has a unique two-dimensional structure, excellent performance, and various potential applications. Graphenyl-based nanomaterials are very attractive lithium ion battery electrode materials, especially for high energy density and high power density batteries. Graphene batteries, on the other hand, are a new type of battery developed using the characteristics of rapid and massive shuttle movement of lithium ions between the surface of graphene and the electrode.

Interestingly, in addition to the investment in the construction of graphene-based grounds by Zhejiang Unilink Nano Technology Co., Ltd., Yulong has also announced the announcement of capital increase and production of graphene. It is reported that Yulong will increase the capital of Ningxia Hanyu Graphene energy storage Materials Technology Co., Ltd. by RMB 300 million, which is mainly used to accelerate the construction and production of the graphene ternary cathode material and conductive paste project line of Ningxia Hanyu lithium ion battery. Drive production capacity and release to promote the development of new business.

The layout of graphene lithium-ion batteries by manufacturers related to the lithium electric chain may accelerate the introduction of graphene lithium-ion batteries.

Graphene is an important option for high energy density batteries.

Graphene material is a good alternative for the next generation of battery material in the background of national policy leading the development of lithium power to high energy density. Graphene has always been considered a representative material in the new generation of materials. The graphene stripped from graphite is a thin carbon atom membrane, which is characterized by higher physical and chemical stability. The material is 100 times more conductive than copper; It is more than 140 times more conductive than Silicon. This is also the reason why graphene ball batteries are five times faster than existing rechargeable batteries. With excellent material properties, graphene has been favored by research institutes and lithium electric companies.

Earlier this year, it was learned from the website of the Ministry of Science and Technology that South Korea’s “Central Daily News” reported that the research team of Samsung Electronics Technology Institute successfully developed a new battery material “graphene ball”, which is 45% higher than the current lithium-ion battery charging capacity. The speed is increased by more than 5 times. The researchers found that after adding silica to high-strength, highly conductive graphene materials, graphene can be synthesized in large quantities. Synthetic graphene exhibits a three-dimensional morphology like popcorn, so it is called "graphene sphere". The use of such a graphene ball material for the anode protective film and cathode material of a lithium ion battery can increase the charging capacity, shorten the charging time, and ensure high temperature stability. South Korea plans to commercialize "graphene balls" lithium-ion batteries within five years.

At the end of March this year, the new energy industrialization project for graphene settled in Yinchuan Economic and Technological Development Zone plans to invest 8.5 billion yuan to implement five projects, including an annual output of 30,000 tons of graphene modified ternary materials and 10,000 tons of graphene conductive slurry projects. After the project is completed, the basic industrial chain of graphene energy storage materials can be formed in Yinchuan City, and an annual output value of more than 15 billion yuan can be formed.

Not long ago, the Massachusetts Institute of Technology has successfully developed a flexible photovoltaic panel with a graphene Nano layer on the surface, which can greatly reduce the cost of manufacturing transparent and deformable solar cells. Such batteries may be used in night vision goggles, cameras, etc. Small digital devices are used.

Although graphene batteries have been favored by many manufacturers and investors, there are also objections. First, the cost and complexity of the process are high. Some scholars believe that graphene batteries may only exist in the laboratory, and commercialization is still difficult. OkRidgeNaTIonalLaborstory and well-known graphene industry manufacturer Vorbeck have disclosed the results of graphene research. They believe that graphene work is often poorly repeatable and the technology done is not in line with practical goals. This phenomenon has been widely criticized by people of insight and industry in the scientific research industry.

Materials are one of the three pillars of modern civilization. The discovery of new materials and the cross-domain application play a crucial role in the development of science and technology. The battery industry has been from traditional lithium batteries to later cobalt lithium batteries until today's batteries are highly nickeled. Graphene may be a breakthrough for the next generation of power cells. The development of battery technology is also promoting the iteration of various electronic terminal products.

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