The 2019 Shanghai International Auto Show is a super show for new energy vehicles. The launch of a variety of new energy brand models has opened people's eyes and deeply felt that the era of new energy vehicles has arrived. However, the safety performance of new energy vehicles has also received unprecedented attention, especially battery safety, which has become the focus of attention. At this time, many media and the public began to pay attention to whether the ternary lithium batteries commonly used in new energy vehicles can be replaced by safer batteries? The answer given by scientists is: Yes, this is a graphene power battery. This in the end is why? First, let’s analyze the advantages of graphene as a material. The principle of graphene power battery is to use lithium ions to move quickly and in large quantities between the graphene surface and the electrode. Taking advantage of this characteristic, graphene batteries were developed and were once recognized by many scientists. Its main advantage is that compared to lithium batteries, its power characteristics and electric capacity are stronger. With the characteristics of graphene, the battery capacity can be increased by 45%, and the charging speed can be increased to 5 times that of existing lithium battery standards. . Secondly, judging from the application technology experience of graphene batteries. This carbon-based substance was isolated for the first time in 2003. Electronic giants that mastered this technology developed graphene batteries at this time, including Samsung, Huawei and other companies. But more than ten years later, why don’t we see graphene computers being widely used in new energy vehicles? The reason is that the stability of graphene is extremely poor, and during the charging process, graphene batteries have strict environmental and temperature requirements in order to achieve fast charging, which requires the help of unique charging technology. To achieve mass production, we still need to wait for the technology to further mature, and this will also be a long way. Finally, judging from the attitude of the industry leader Tesla towards graphene, as early as 2016, the new energy leader Tesla was speculated by media reports to further enhance the cruising range of electric vehicles by relying on the application of graphene materials. However, this The speculation was not further confirmed. Now Tesla seems to be paying more attention to the safety performance of its vehicles and has decided to set the maximum charging capacity of its Supercharger stations at 80%. Generally speaking, as a power battery that can obviously meet people's needs for fast charging, large capacity, high performance, and safer safety, the prospect of graphene batteries is very optimistic. Its application technology and safety performance are issues that scientists need to solve urgently, and we also look forward to this day coming as soon as possible.

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