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Graphene lithium-ion battery
2024-04-29
Lithium-ion batteries have the advantages of large capacity, long cycle life, and no memory. They have become the preferred battery for global consumer electronics products and the mainstream battery for new energy vehicles.High energy density and fast charging are inevitable trends in the development of lithium battery products. Adding conductive agents to the positive electrode material is an effective way to improve the performance of lithium batteries.
It can greatly increase the conductive properties of the positive and negative electrodes, increase the battery volume energy density, and reduce resistance. , increase the deintercalation and insertion speed of lithium ions, significantly improve the battery's rate charge and discharge performance, and improve the fast charging performance of electric vehicles.The so-called graphene battery is not made of graphene material throughout the battery, but uses graphene material in the electrodes of the battery.
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In theory, graphene electrodes may have twice the specific capacity of graphite.In addition, if graphene and carbon black are mixed and added as conductive additives to lithium batteries, the internal resistance of the battery can be effectively reduced, and the battery rate charge and discharge performance and cycle life can be improved.
Moreover, the bending of the battery has no effect on the charge and discharge performance, so the electrodes are made of graphite. After graphene materials, the battery has a high charge and discharge rate, which is why graphene batteries have fast charging.