Great Power Technology: Domination Of The World Starts With Chips

"Oh, not yet." Liang Feiyun said: "We are still in the first step, which is to verify this carbon film that can directional screen oxygen molecules. carry out testing."

"So the solid electrolyte mentioned in the data and the three-dimensional porous membrane mentioned in the material have not yet been prepared."

Ye Cheng nodded knowingly.

He asked this question because there is a very common problem in lithium batteries.

That is, when charging, after the lithium ions are reduced to metallic lithium at the negative electrode, something called 'lithium dendrite' will be formed.

This is because, with the existing technology, it is impossible to ensure that the surface of the negative electrode material lithium rod is completely flat at the atomic level, and it is destined to have a rough surface.

In the process of reducing lithium ions to metal lithium, they will continue to extend from these rough surfaces to form pointed dendrites, which is also a very common problem in lithium batteries.

First, it poses a serious problem: piercing the battery separator.

Once the lithium dendrite pierces the battery separator, the airtightness of the battery will be destroyed, and the electrolyte will overflow, and the active lithium metal will react with the air, and eventually catch fire or even explode.

Reasons such as the spontaneous combustion and explosion of electric vehicle batteries that often appear in the news, half of them are related to this reason.

Second, lithium dendrites can also grow from the negative electrode all the way to the positive electrode, causing short circuits, making the battery even more dangerous.

For example, charging and charging explosions are mostly due to this reason.

Because when the battery is short-circuited, charging will cause the battery to get hotter and hotter, and eventually it will naturally boom.

Therefore, this is why the scientific charging method of mobile phones is to stop charging after charging more than 90%, because charging for a long time will lead to continuous precipitation of lithium dendrites, causing danger.

Of course, the safety of mobile phone batteries is good now, and the possibility of this happening is very small, but the precipitation of lithium dendrites will also increase the resistance, thereby affecting the storage capacity of the battery. Not durable reason.

As for the "three-dimensional porous membrane" mentioned by Liang Feiyun just now, it is the solution to the lithium dendrite problem in the lithium-air battery provided by the system.

This separator is used to cover the surface of the lithium rods, so that when the lithium dendrites are precipitated, they can be evenly present in the pores of the separator, and avoid the formation of sharp and sharp lithium dendrites.

This is a major research achievement for the materials community, just like the carbon film that screens oxygen.

In addition, there is the solid electrolyte, which is the top priority of lithium-air batteries. Without it, lithium-air batteries cannot be realized.

It can be said that the lithium-air battery technology provided by the system is not only a lithium-air battery, but also a perfect version of a lithium-air battery.

Because the various main technologies included in it have many functions and can be used to solve various problems in other aspects.

For example, the carbon membrane that unilaterally screens oxygen molecules, according to the introduction of the system, the screening rate of this thing is as high as 99.999%, which provides great convenience for the industrial production of pure oxygen.

Thinking about the preparation process of pure oxygen, several methods are relatively complicated, and the concentration cannot be so high, but this thing only needs to put a set of membranes, and then enter the air into it to complete the work, the cost is only Need to produce a bottle, a carbon membrane.

This saves a lot of cost and a lot of time.

Better than Durex.

Ye Cheng can predict that as long as this material is produced, it will immediately arouse strong demand from various related factories all over the world.

In addition, the three-dimensional pore separator, this thing, is the savior of all lithium batteries. Any lithium battery can use it to solve the problem of lithium dendrites. In addition, there may be other functions. Ye Cheng temporarily If he can't think of it, he doesn't need to think about it.

The solid-state electrolyte is actually a lithium ion channel. With it, it almost solves the problem of most all-solid-state lithium batteries. Any all-solid-state lithium battery that can be imagined can use this solid-state electrolyte to solve the problem.

However, Ye Cheng is also very clear that although these materials are very powerful, their production costs are a little bit high, at least about 30% more expensive than the most common lithium-ion batteries currently.

But soon he couldn't help shaking his head again.

Why are you thinking so much?

Ten times stronger than the original battery, will consumers refuse to pay 30% more?

A mobile phone that can last for a week on a single charge, but it costs 1,000 yuan, do you want it?

That's for sure!

No one can refuse this kind of mobile phone.

Like the euphoric feeling you get when you see that your phone's battery is 90 percent.

Ye Cheng asked Liang Feiyun: "Professor Liang, let me ask, how long will it take you to complete all the experiments?"

Liang Feiyun said: "As long as there is no problem with the information provided, I can guarantee that all experiments will be completed within two weeks."

Ye Cheng nodded, "That's fine."

"Then I will leave everything here to you, and fellow researchers. After the experiment is completed, every researcher who participates in the experiment, even an intern researcher, will be rewarded!"

The researchers present were immediately excited.

"thank you boss!"

"Boss is awesome!"

"The boss is in good health!"

Ye Cheng nodded with a smile, and then said: "Everyone, continue your experiments. If possible, I hope I can also participate in it."

It just so happened that he had nothing to do, coupled with his proficiency in technology, it made his hands itchy for a while.

The researchers present couldn't help looking at him. Although they didn't show anything on their expressions, they clearly expressed doubts.

You are a big boss, do you have hands-on experiment ability?

Do you know how to extinguish the alcohol lamp after it is lit?

Ye Cheng saw what they meant, and then pretended not to notice, and said to himself, "Just right, I haven't been in the laboratory for a long time after I got my Ph.D. in physics from Shuimu University."

Everyone was taken aback, and their gazes at Ye Cheng changed suddenly.

Good guy, it turned out to be a Ph.D. in physics from Mizuki University.

Boss.

Disrespect, disrespect.

The skeptical gaze just now was instantly relieved.

Although Ye Cheng studies physics, specifically integrated circuits, and has nothing to do with materials science, but they are all laboratory operations anyway, so they are not particularly worried.

Ever since, Ye Cheng joined their experiment.

In the experiment, Ye Cheng also felt very happy and found it very interesting.

In addition, the professionalism he showed made an assistant researcher beside him couldn't help but ask, is he really a Ph.D. in physics, not a Ph.D. in materials science?

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