Academic tyrant: I have become a prodigy since I was able to pursue my academic career with peace of

Xiaoqiang, who was wearing a red bellyband, was silent for a moment and said,"The radius of sodium ions is 0.102nm, while the radius of lithium ions is only

0.076nm. When a sodium ion continues to move in the electrode, it can easily cause damage and collapse of the microstructure of the electrode material."

"At the same time, the relative atomic mass of sodium is more than three times that of lithium, which means that to store the same amount of energy, sodium-ion batteries require greater mass, resulting in lower energy density."

Chen Fan understood that this sodium-ion battery is not easy to use because sodium is a"fat man". I feel sorry for the sodium ion for a second.

And the ion battery is not that good either. Although the ionic radius is not that large, it carries a lot of charge, so The migration speed is slow.

This is like carrying two large boxes of luggage and trying to pass through a carriage on the Spring Festival travel train. The consequence of slow migration is that the rate performance of the battery is poor. Roughly understood, it is the charging and discharging speed of the battery.

Lithium-air batteries are the most common way for humans to obtain energy, such as burning wood or coal to react with oxygen in the air. Converting the energy generated into electrical energy is called a lithium- air However, the design principle of a lithium-air battery is very different from that of a lithium-ion battery. Its negative electrode material is metallic lithium, and its positive electrode is air.

It is oxygen in the air.

When discharging, metallic lithium provides lithium ions to the electrolyte. These ions react with oxygen to generate lithium peroxide, and charge transfer occurs at the same time, thus generating electrical energy.

The theoretical energy density of lithium-air batteries is very high. Reaching 12,000 watt-hours per kilogram, this value is even competitive with gasoline (13,000 watt-hours per kilogram).

Moreover, the oxygen it uses comes from air, which is a raw material that is theoretically unlimited.

Capacity reach 12 times that of lithium-ion batteries

"Then lithium-air batteries."Chen Fan frowned slightly and said. He started to move his hands. The reaction in the lithium-air battery is too complex, and a variety of by-products are generated. There are many by-products and they are very unstable, especially the current collector and the battery shell.

Lithium-air Battery, but what actually participates in the reaction is oxygen, so a set of accessory facilities are needed to extract oxygen from the air.

Chen Fan plans to design this set of accessory devices inside the battery, otherwise it will be greatly reduced in terms of cost and portability.

When he was conducting experiments, Zhao Ming was also doing what Chen Fan had told him to do, that is , digging rivers and building roads.

After receiving a transfer worth tens of billions from Chen Fan, Zhao Ming also It was all a bit confusing.

He had never seen so much money.

For a moment, he even wanted to take the money and run away, but he quickly suppressed this idea because he couldn't run away.

Not going anywhere.

Due to Chen Fan's relationship with the military, he couldn't take any of the money.

At the same time, Chen Fan also purchased a new batch of experimental equipment.

arrival

"come in."

Chen Fan said to the door.

He had put away all the important experimental equipment.

……

Soldiers carrying experimental equipment came in. It was their first time in the laboratory, and they looked around curiously.

The leader of the group, He Changnian, took a look at the laboratory and said with a smile,"Dean Chen, your laboratory is too simple."

It was indeed quite simple. Apart from a desk computer and some equipment he didn't recognize, there was nothing else. of what.

Inside the house, there are still stains left over from various experiments, here and there in the west.

"As the saying goes, people cannot be judged by appearance, and sea water cannot be measured. Chen Fan raised his eyebrows and said,"Commander He, the total amount of items in"

"One billion?!"He Changnian's eyes nearly bulged out in shock, and he pointed at the things in the room and said,"Just these scraps of scrap metal add up to one billion?!"

Don't tease him, okay!

He couldn't help but tease him!

The soldier who was carrying the equipment shook his hands and almost dropped the equipment.

"Be careful, you can move it at least 80 million."Chen Fan said calmly

"Eighty million?!"The soldier quickly helped him up. If there was any damage, he wanted to use his body to cushion it. His face was also pale.

This is too terrible!

"Well, close to one billion. These are expensive high-end experimental instruments, and many of them are high-end equipment that foreign countries are prohibited from exporting to Xia State!"Chen Fan looked at these precious equipment and said

"How did you get it?"He Changnian asked subconsciously.

"When you reach a height like mine, the country will also rack its brains and mobilize all its power to get it for you."Chen Fan said with a smile

"ah! So that's it."He Changnian nodded.

It's really amazing!

He will never reach such a height in his life.

"Not all of them are here, some of them are being escorted over. They will all arrive in two or three days, with a total price of about

3.2 billion. Enough to build a comprehensive large-scale research institute."

There is also a supercomputer. Of course, the country gave him free use.