The following describesBattery special graphiteProcess of alkene lithium battery industrialization

The successful example of preparing graphene anode materials and graphene conductive agents for batteries under laboratory research and development conditions provides a solid scientific research foundation for the commercialization of graphene lithium-ion batteries in industrial production, so what is the situation of graphene lithium batteries in reality?

The excellent performance of graphene for batteries is beyond doubt, but it must be suitable for lithium-ion batteries? In my humble opinion, graphene is not suitable for lithium-ion batteries, please consider the following:

1. Cost issues

The cost of using graphene as a conductive agent is much higher than that of ordinary carbon black, and the cost of lithium batteries is a key control factor. Without reducing the cost of raw materials, even if the electrical properties of graphene are better, battery manufacturers cannot afford the cost of hundreds of thousands per ton.

2. Process issues

The technical problems caused by the sheet structure of graphene for batteries are mainly the preparation of electrode paste. The electrode paste requires good fluidity, dispersibility and appropriate viscosity. The dispersion of graphene sheets in the electrode paste is a difficult problem, especially the electrode paste cannot be dispersed by adding dispersant. The graphene surface area is large, which has a great influence on the sedimentation stability of the slurry, cannot guarantee the consistency of each batch, and affects the battery performance.

3. Other factors

The sheet structure of graphene for batteries inhibits the diffusion of lithium ions, which easily leads to serious battery polarization and reduced battery capacity. The rich functional groups on the surface of graphene are small wounds on the surface of graphene. Adding too much graphene will not only reduce the energy density of the battery, but also increase the liquid absorption of the electrolyte. On the other hand, it will increase the side reaction with the electrolyte, affect the circulation, and may even bring safety problems.

Why is battery-specific graphite widely used in electronic products?

With the acceleration of the upgrading of electronic products and the increasing demand for heat dissipation management of miniaturized, highly integrated and highly functional electronic equipment, a new heat dissipation technology for electronic products-a new scheme of graphite data heat dissipation has also been introduced. The solution is based on graphite sheet, which is a brand-new natural graphite solution. It adopts graphite sheet with high heat dissipation efficiency, small space occupation, light weight and uniform bidirectional heat conduction, eliminate "hot spots", shield heat sources and components, and improve the function of consumer electronics. This new graphite sheet is used in notebook computers, flat panel displays, digital cameras, mobile phones and personal assistants.

The battery special graphite sheet is made of expanded graphite by pressing and baking. The battery special graphite sheet has high temperature resistance, thermal conductivity, flexibility, elasticity and good sealing performance. The excellent graphite sheet has superior sealing function, thin thickness, light weight, and easy cutting. The graphite sheet is used for industrial sealing and heat dissipation by using the sealing function and heat conduction function of the graphite sheet, the sealing graphite sheet has the advantages of thin thickness, easy cutting and processing, high temperature resistance, wear resistance, corrosion resistance, good sealing performance, long replacement cycle, etc. The advantages of graphite sheet play a very important role in the field of industrial sealing.

Xiao Bian will not do too much explanation today. Thank you for watching. I wish you a happy life. Let's see you next time.