Because graphene has the characteristics of light weight, high strength, and strong conductivity, graphene has always been regarded as a key material to improve battery charging speed and promote battery technology progress.

But in fact, as a new type of material, graphene has been invented only 10 years ago. At present, graphene is not only unable to be mass-produced on a large scale, but also has the problem of immature technology and very high cost.

Although many manufacturers in the market are hyping the concept of graphene batteries, on January 15 this year, GAC Ion issued a document stating that the company has developed a graphene-based super fast charging battery and claimed that this battery has "super fast charging". +Long battery life +Super safety”features. But after this poster was released, GAC was hit hard by many insiders.

Ouyang Minggao, an academician of the Chinese Academy of Sciences, said publicly, "If someone tells you that an electric car can run 1,000 kilometers, it can be fully charged in a few minutes, and it is safe, he must be a liar. "And the results also proved that Ouyang Minggao's judgment was not wrong. GAC Aian did have problems with its publicity, and its characteristics did not refer to a battery. This case has made domestic users clearly aware that graphene batteries will not appear on the market in a short time.

Of course, in the long run, graphene batteries are still products worth studying.

It is undeniable that when graphene is used as a battery conductive agent, it can indeed improve battery energy density and charge-discharge rate to a certain extent. Although the development of ideal graphene batteries is very difficult, the use of graphene materials to help upgrade traditional batteries is actually very feasible.

At present, sodium-ion batteries are likely to replace lithium-ion batteries in the future by virtue of their low cost and strong adaptability. However, the energy storage capacity of sodium-ion batteries is relatively weak, and if they want to achieve popularization in the market, it is inevitable to rely on graphene to help. In fact, scientists have been trying to fuse the above two materials in batteries. Moreover, scientists have recently achieved technological breakthroughs.

On August 26, the Financial Association reported that scientists at Chalmers Institute of Technology in Sweden have developed a new type of graphene material—Janus graphene.

The research team members said that adding a molecular spacer on one side of the new graphene layer, when these are stacked together, the molecules can create a larger space between the graphene. This material and this design can allow The battery capacity has been greatly improved.

It is reported that using the new Janus graphene instead of graphite, scientists have successfully achieved a capacity of 332mAh/g in an experimental sodium battery. This is about 10 times higher than that of a nano-ion battery designed with traditional ideas, and its storage capacity is comparable to that of a lithium battery. The success of this research has now been published in the journal "Science Progress".

Although in the short term, there is still a long way for new graphene batteries to enter the mass market from the laboratory, but considering that various industries are looking forward to the emergence of new battery technologies, and as the battery market continues to expand, more and more Capital is pouring into the battery industry. In my opinion, the new graphene battery may not make users wait too long.