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"Lithium-air battery technical problems are solved! 》

"Shock! Galaxy Battery Company has developed a lithium-air battery! 》

"The energy density of lithium-air batteries exceeds 1,000. Get ready to say goodbye to gasoline cars!" 》

"Domestic enterprises have solved scientific problems that have plagued the industry for decades and successfully created lithium-air batteries! 》

"The new electrochemical system-the energy density of lithium-air batteries reaches 1200wh/kg, and the future leadership of new energy vehicles is in our country's hands! 》

"An incredible breakthrough..."

In the beginning, these news about lithium-air batteries only circulated in a small area.

However, as more and more people clicked to watch and forwarded, the news was pushed to the hotspot in just three or four days and became well known by more people.

As a new frontier media channel, Douyin with a daily activity of 600 million is naturally also the main position for information promotion.

After seeing the news about the lithium-air battery, many bloggers felt that there was a hot spot, so they shot short videos to explain and explain the report about the ‘lithium-air battery’.

Most of the Douyin bloggers tend to be subjective, thinking that the technology that foreign big cows have already given up, how can the Chinese study it? Fake, it must be fake.

Some bloggers find it new and interesting, and they are commenting with the attitude of eating melons, and the remarks are only superficial, neither saying that they are false or true.

"Xiaoyan Science Popularization" is a popular science title that is well-known for Douyin, and its creator, Xiaoyan, is not only a PhD in physics from a famous American university, but also a popular science writer.

Seeing such hot spots as lithium-air batteries, he had no reason not to come out for a while.

So, a piece of news titled "A Super Burst, Lithium-Air Batteries Was Created?" "The short video was released on April 5.

At the beginning of the video, Xiao Yan wore a yellow long-sleeved shirt and a gray sleeveless suit and waistcoat. His hair was combed meticulously. She said:

"There is another big technology news! Since last year, the new energy vehicle sector has been rising very fiercely. In just one year, Tesla's stock price has skyrocketed by 700 billion US dollars, an increase of more than 700. %, also let Musk kill Bezos and become the new richest man in the world.

Now, the lithium-air battery has come out again. I heard that the energy density has exceeded 1,000. If the lithium-air battery is arranged for Tesla, their three-electric technology will reach a new height, and the market value will exceed one trillion US dollars per minute. Is Musk lying directly in the world invincible?

Okay, no kidding, let's be serious.

The news that I watched in the past two days has been swiped by the lithium-air battery. I didn't believe it very much at first, but after getting to know it, I was a little surprised and hesitant. "

Xiao Yan raised his finger and said: "First of all, the team that broke through the lithium-air battery, the experimental team from the Galaxy Battery Company, is a bit familiar with the name'Galaxy Company'?

That's right, I did a video about a toothpaste owned by Galaxy, which is a white toothpaste, and there is still it in the product window.

Not to mention anything else, just this one white toothpaste, it must be praised!

I have personally used it for more than three months. I used to have a little bit of yellowing on my teeth and some tartar that can't be removed by brushing my teeth, but now there is no tartar. The teeth are whiter than salt without special whitening effects.

Whether the lithium-air battery is real or not, let’s just leave it alone, but this white toothpaste is really praised, not black. The little yellow car at the bottom left of the video will have it. If you don’t buy it, please buy it quickly. You are out if you buy it. "

After the screen was edited, Xiao Yan continued: "Okay, now let's talk about today's theme, lithium air battery.

This time, the leader of the experimental team of Galaxy Battery Company is the teacher Yang Xuedong who is responsible for the research and development of a white toothpaste. He is obviously researching toothpaste, why suddenly he went to research batteries?

Have you also developed a lithium-air battery, which is regarded as almost impossible to overcome by the industry?

Not to mention your doubts, I am also confused. It is estimated that the entire battery industry is now confused, and few people think this is true.

Let me talk about the principle first. The lithium-air battery is a battery that uses lithium as the negative electrode and oxygen in the air as the positive electrode reactant.

Lithium-air batteries have a higher energy density than lithium-ion batteries because their cathodes are very light and oxygen can be obtained from the environment instead of being stored in the battery. "

Xiao Yan: "However, the battery industry has never been very optimistic about lithium-air batteries. For example, Jeff Dahn, one of the big cows in lithium batteries, has criticized lithium-air batteries for nothing.

First, people think that the scaryly high specific capacity of lithium-air batteries is purely nonsense, because it is calculated based on very small substances such as lithium and oxygen. Using a decimal as the denominator, of course, it will be divided into a huge one. digital.

But the true capacity of the battery has to count all the electrode components. Jeff Dane calculated it and designed it in a normal way. It doesn't seem to be much higher than the traditional lithium battery. "

Xiao Yan: "The second point is that lithium-air batteries are actually lithium-pure oxygen batteries. Nitrogen will react with lithium and is irreversible. People who have attended junior high school must know how much nitrogen there is in the air.

Therefore, how to effectively and reliably separate pure oxygen from the air has always been an extremely challenging problem.

The third point is that the overpotential problem cannot be effectively solved during the charging process...

The fourth point ~www.wuxiaspot.com~The problem of lithium negative electrode, the concept of lithium air, if feasible, must be based on lithium metal as the negative electrode material, but because of the growth of lithium dendrites, the battery may be short-circuited, burned, scrapped or even exploded.

Therefore, if the problem of the lithium negative electrode is not solved, the lithium-air battery cannot be used at all.

Fifth, the problem of oxygen enrichment can be solved by separating pure oxygen, but the enrichment of oxygen is also a big problem. Otherwise, the charging and discharging speed is too slow, then even high energy density will not help.

Sixth, a bunch of side reactions of the electrolyte..."

After an explanation, Xiao Yan changed her gesture and continued:

"After talking so much, those who understand it should all know how difficult it is to make a lithium-air battery with an energy density of 1200wh/kg.

It is no exaggeration to say that if this thing is really made, it can be regarded as a new electrochemical system in the field of batteries. Later lithium-sulfur batteries, lithium-silicon batteries, and various lithium-based negative electrodes can be made.

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A Nobel Prize in chemistry can't run properly. If this is the case, then our country will have to add another Nobel Prize winner. "

Xiao Yan's words changed: "However, from a rational point of view, I think that lithium-air batteries that can be commercialized and used in mobile phones or cars are probably still a bit hanged. Maybe the experimental team of Galaxy is just in the laboratory. Lithium-air battery came out of it.

Under normal circumstances, there is still a long way to go before commercialization, ranging from 10 years to 8 years, and as short as 3 to 5 years, so don't be happy too early, just look at this news rationally.

Well, having said so much, I feel a bit dry and dry. I would like to give a thumbs up if I didn't understand it. "