Spend Money to Play the World

"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, and you are ready to say goodbye to gasoline vehicles! 》

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

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

"Unbelievable Breakthrough..."

At first, these news about lithium-air batteries were only circulated in a small area.

But as more and more people clicked to watch and forward it, in just three or four days, the news was pushed to the hotspot section and was known to more people.

As a new frontier media channel, Douyin has 600 million daily active users, and is naturally the main position for information promotion.

After seeing the news of lithium-air batteries, many bloggers felt that there was a hot spot to rub against them, so they shot short videos one after another to explain and explain the reports about 'lithium-air batteries'.

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

There are also bloggers who find it fresh and interesting, commenting with an attitude of eating melons, and their remarks are only superficial, neither saying it is false nor true.

'Xiaoyan Science Popularization' is a well-known popular science account on Douyin, and its creator Xiaoyan is not only a doctor of physics from a famous American university, but also a popular science writer.

Seeing a burst hot spot like a lithium-air battery, he had no reason not to come out and rub it.

So, a headline titled "A super burst news, lithium-air batteries were created? "The short video was released on April 5.

At the beginning of the video, Xiao Yan is wearing a yellow long-sleeved shirt, a gray sleeveless suit and vest, and his hair is meticulously combed.

"Another piece of big technology news! Since last year, the new energy vehicle sector has experienced a very fierce rise. In just one year, Tesla's stock price has skyrocketed by $700 billion, an increase of more than 700%. %, and 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 in minutes. Musk is lying directly in the world invincible?

Okay, no kidding, let's be serious.

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

Xiaoyan raised his finger and said, "First of all, the team that broke through the lithium-air battery is from the experimental team of Galaxy Battery Company. Does it sound familiar to you when you hear the name 'Galaxy Company'?

That's right, I made a video about a toothpaste under the Galaxy Company before, which is a white toothpaste, and it is still in the product window.

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

I have been using it for more than three months. Before, my teeth still had a little yellowing and some tartar that could not be removed by brushing. But now the tartar is gone. You see, my teeth are whiter than salt without any whitening effect.

Let's not worry about whether the lithium-air battery is real or not, but this one-wash white toothpaste really deserves to be liked. Buy and you are out. "

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

This time, the leader of the experimental team of Galaxy Battery Company is Mr. Yang Xuedong, who is responsible for developing a whitewash toothpaste. He is obviously studying toothpaste, so why did he suddenly study batteries?

What about the development of the lithium-air battery, which is hailed as almost impossible to overcome by the industry?

Don't say you doubt,

I am also puzzled. It is estimated that the entire battery industry is puzzled now. There should be few people who think this is true.

Let's talk about the principle first. A 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 higher energy density than lithium-ion batteries because their cathodes are light and oxygen can be obtained from the environment instead of being stored in the battery. "

Xiaoyan: "However, the battery industry has never been very optimistic about lithium-air batteries. For example, Jeff Dahn, one of the big names in lithium batteries, criticized lithium-air batteries to no avail.

The first point is that people think that the terrifyingly high specific capacity of lithium-air batteries is pure nonsense, because it is calculated based on substances with small masses such as lithium and oxygen. Taking a decimal as the denominator will of course divide a huge number.

But the real capacity of the battery has to count all the electrode components, Jeff Dahn calculated it, and designed it in a normal way, it doesn't seem to be much higher than the traditional lithium battery? "

Xiaoyan: "Second point, the lithium-air battery is actually a lithium-pure oxygen battery, and nitrogen will react with lithium, and it is irreversible. Anyone who has gone to junior high school must know how much nitrogen is in the air.

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

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

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

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

The fifth point, the enrichment of oxygen, even if the separation of pure oxygen can be solved, 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.

The sixth point, a bunch of side reactions of the electrolyte..."

After a brief explanation, Xiao Yan changed his gesture and continued:

"Having said so much, the people who understand it should know how difficult it is to make a lithium-air battery, and also to achieve an energy density of 1200wh/kg.

It is no exaggeration to say that if this thing really comes out, it will create a new electrochemical system in the field of batteries, and then lithium-sulfur batteries, lithium-silicon batteries, and various lithium-ion batteries can be used.

Advertising, [ \\mi\\mi\\reading\\app \\\\ ] is really good, it is worth installing, after all, you can read books in cache and read aloud offline!

A Nobel Prize in Chemistry should not run away. If this is the case, then our country will add another Nobel Prize winner. "

Xiaoyan's words changed: "However, from a rational point of view, I think the lithium-air battery that can really be commercialized and applied to mobile phones or cars is still a bit hanging. Maybe the experimental team of Galaxy Company is only in the laboratory. Come up with a lithium-air battery.

In general, there is still a long way to go before commercialization, ranging from ten or eight years to three or five years, so everyone should not be too happy, just treat this news rationally.

Okay, after talking so much, my mouth is a little dry, so please give me a thumbs up if I don't understand. "