Cities: from Heavy Locomotives to Industrial Overlords

"At present, the Tesla produced in country M uses nickel-cobalt-aluminum ternary materials, with an energy density of about 230 watt-hours per kilogram, while more than 90% of domestic electric vehicles currently use lithium iron phosphate materials, with the highest energy density. It can only reach 140wh/kg.”

"For example, to achieve a cruising range of 400 kilometers for an electric car, using lithium iron phosphate material, it needs to install about 600 kilograms of batteries, while using Tesla's ternary material battery, it only needs about 400 kilograms."

"The problem with low battery energy density is that in order to pursue a longer cruising range, more batteries must be installed, and adding more batteries will increase the weight of the vehicle body, increase power consumption during driving, and increase the cost of use. "

"There's also the question of materials that can charge quickly."

"If a battery material has a high-quality and light-weight mileage, but it takes ten hours to charge a single charge, isn't it nonsense? It's not realistic to run a high-speed operation and charge it overnight in the service area. Obviously, this kind of material is also unrealistic. "

Indeed this is the problem.

If it takes too long to charge one time, it is not realistic.

If you can use a battery that charges quickly, is lightweight, and has a high range, that's the best.

This is also a problem that major new energy sources have always considered, so various batteries have appeared, such as blade batteries, lithium batteries and so on.

But none of this made a qualitative change in mileage anxiety.

So mileage anxiety is still the biggest problem.

Everyone present and the audience in the live broadcast room listened carefully to Su Qin's words.

Su Qin analyzed the status quo of new energy vehicles. Obviously, he did his homework, not just bragging.

"So to solve the range anxiety, that is to find a material that can be fast charged and light in weight, and then have a high cruising range?"

"Yes, that is a graphene battery!"

"Graphene, I believe you have heard of it, this is a new industrial material in the 21st century, a new revolutionary material!"

Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future.

Even if everyone present did not know it, they knew the term graphene.

In fact, graphene already exists in nature, but it is difficult to peel off a single-layer structure.Graphene is layered up to form graphite, and graphite 1 mm thick contains about 300 million layers of graphene.

A pencil scratches lightly on the paper, and the traces left may be several layers or even just one layer of graphene.

Everyone knows that graphene is good, but there is no one that can really apply graphene to new energy vehicles...  

"I believe everyone has heard an advertising line, charging for two minutes and talking for two hours."

"Our first car, the Feiyue F-one, uses a graphene battery, which can be charged for 10 minutes and have a range of 1000 kilometers!"

"We know that the charging and discharging process of the battery is actually a process of "embedding" and "detachment" of cations in the electrode. Therefore, if there are more holes in the electrode material, the faster this process will proceed. In the macroscopic From an angle, the faster the battery charges and discharges.”

"The microscopic structure of graphene is a network structure composed of carbon atoms with sufficient holes, which is undoubtedly a very ideal electrode material."

"According to research by researchers at Rensselaer Polytechnic Institute, the use of graphene as the anode material for batteries can charge and discharge 10 times faster than lithium-ion batteries!"

"So it means that the charging speed of the graphene battery is very fast, it can be charged for ten minutes and the battery life is 1000 kilometers!"

Su Qin talked eloquently and introduced the power of graphene batteries.

Graphene battery is a feature technology of Feiyue F-one.

At the same time, the quality of graphene is relatively light, and it needs a lot of graphene to release very powerful electricity, because the capacity of graphene is very large!

8 minutes of charging, [-] kilometers of battery life, really crazy!

This 3.8 is not Su Qin's remarks.

Everyone in the audience knew that because there was a previous report that Graphenano cooperated with the University of Corvado in Spain to develop the first graphene polymer material battery, and its power storage was three times that of the best product in the market. of electric vehicles can travel up to 1000 kilometers while charging takes less than 8 minutes.

Graphenano can't mass-produce and commercialize it, but Feiyue Group and Su Qin did it.

This shocked everyone present.

Whether it was the on-site big V, car critics or media reporters, or the audience and netizens in the live broadcast room, they were all shocked.

There was an uproar!

PS: The seventh update, the new January for a broken egg reward and automatic subscription, continue to challenge 10 more outbreaks today. .

Chapter 274 The leader of the International Auto Show!Super performance ceiling (eighth more, please subscribe)

Graphene batteries are good!

This is something everyone knows.

But no one has ever tried to use graphene batteries in new energy vehicles!

8 minutes of charging, more than 1000 hours of battery life... This means that the problem of mileage anxiety is basically solved.

It takes eight minutes to charge the battery, which is the time it takes to go to the toilet in the service area.

That would be awesome!

Pretty cool!

The technology of energy vehicles is more complicated than that of traditional fuel vehicles, especially when it comes to cruising range, it cannot be solved simply by adding more batteries.

Oversized batteries, motors, electronic control and thermal management systems have to be changed.In terms of weight alone, for a pure electric vehicle with a driving range of 300 kilometers, the weight of the battery alone is more than 500 kilograms and 25 kilograms. For a pure electric vehicle with a driving range of 500 kilometers, the weight of the battery alone is nearly 1 ton. .

From the original new energy vehicles, the continuous driving range was only 120 kilometers, and then gradually developed to 200 kilometers, then to 300 kilometers, to the more common 500 kilometers at present.

At present, the cruising range of new energy vehicles on the market is around 500, and the higher ones are around 700.