Time：2023.07.21Browse：1
There is no doubt that the performance of the battery -specific graphene is unquestionable, but is it necessarily suitable for lithium ion batteries? According to my clumsy opinion, graphene is not suitable for lithium ion batteries, please consider the following:
1. Cost problem
The cost of using graphene as a conductive agent is much higher than that of ordinary charcoal black. The cost of lithium battery is the key control factor. Without reducing the cost of raw materials, even if the electrical performance of graphene is good, battery manufacturers cannot afford a few tons per ton. 100,000 cost consumption.
2. Process problems
The technical problems brought by the chip structure of battery -specific graphene are mainly preparation of electrode paste. The electrode paste requires good liquidity, decentralization and appropriate viscosity. The dispersing of graphene tablets in the electrode paste is a difficult problem, especially for especially The electrode paste cannot be decentralized by adding a dispersant. The surface area of the graphene is large, which has a large impact on the stability of the slurry. It cannot guarantee the consistency of each batch and affect the battery performance.
3. Other factors
The chip structure of battery -specific graphene inhibits the diffusion of lithium ions, which can easily lead to severe battery polarization. The battery capacity is reduced. The rich surface of graphene is a small wound on the surface of the graphene. Adding too much graphene will not only reduce the battery The energy density will also increase the absorbent of the electrolyte. On the other hand, it will increase the side reaction with the electrolyte, affect the cycle, and even bring security problems.
Why are battery -specific graphite widely used in electronic products?
With the acceleration of the update of electronic products, and the increasing demand for small -scale, high integration, and high -functional electronic equipment heat dissipation management, a brand new electronic product heat dissipation technology -a new solution for graphite data heat dissipation has also been launched. The plan is based on graphite films. This new natural graphite solution uses graphite slices with high heat dissipation efficiency, small occupation space, light weight, and uniform two -way thermal conductivity to eliminate "hot spots", block thermal source and components, improve the functions of consumer electronics products This new graphite sheet is used for laptops, tablets, digital cameras, mobile phones and personal assistants.
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2023-08-21
