On the day of Kangchi's visit to CATL, CATL's lithium battery R&D laboratory conducted a professional testing and analysis of the sodium battery brought by Kangchi, and submitted the specific analysis results to Zeng Yuqing on the third day.

Analysis data shows that this is indeed a sodium-ion battery.

And it is also an all-solid-state sodium battery with an energy density of up to 300Wh/kg!

Its anode material boldly uses metal sodium and a certain amorphous carbon, which is the key to the high energy density of solid-state batteries.

The cathode material is a metal-like oxide and polyanionic compound.

The electrolyte is a solid high-valent sulfide, a certain oxide.

In other words, most of the positive and negative electrodes and electrolytes of this battery are new materials that they have never seen before!

As for the diaphragm?

All-solid-state batteries don't need this stuff at all.

In traditional lithium batteries, lithium ions react with the liquid electrolyte in the back and forth movement of discharge and charge to form a lithium dendrite.

Lithium dendrites are like a hard branch, slowly expanding in the process of battery use, and finally connecting the positive and negative electrodes.

The result is a short circuit, fire and explosion.

The separator is something that is sandwiched between the positive and negative electrodes and slows down the growth rate of lithium dendrites.

But no matter how good the separator is, it can only play a role in delaying, and cannot really eliminate the appearance of lithium dendrites.

Therefore, if the lithium battery is used for a long time, improperly used, the quality is not good, or the extrusion deformation occurs, the lithium dendrites may puncture the separator, and eventually cause short circuit, fire and explosion.

Although solid-state batteries may also produce lithium dendrites, the electrolyte of solid-state batteries is all-solid, so the electrolyte itself is a separator.

Such a thick 'diaphragm' is difficult to be pierced by lithium dendrites or nanodendrites, resulting in short circuits and fire explosions.

Even if it is really punctured, the solid electrolyte is difficult to burn, let alone decompose oxygen, and directly strangled the hidden danger of combustion in the cradle.

This is why solid-state batteries are much safer than liquid batteries.

High energy density + safety,

Solid-state batteries are really fragrant.

It's a pity that this piece of cake has been painted for so long in the Ningde era, but it can't be taken out for everyone to eat.

On the contrary, Kangchi not only took out the solid-state battery, but also the sodium-ion solid-state battery.

This is simply incense on incense, and it can't be more fragrant!

Zeng Yuqing, who got the analysis report, pondered for a long time, and then began to convene the company's board of directors, for three consecutive days, held many discussions, and went to Dongyang with the directors to witness Datang Heavy Industry's nano battery production line, and finally unanimously decided:

Adapt to the times, and retreat bravely from the rapids!

CATL agreed to sign a strategic cooperation agreement with Datang Heavy Industries to become a long-term sodium battery OEM of Datang Heavy Industries.

In order to further consolidate the strategic cooperative relationship between the two parties, ensure that Datang Heavy Industries has a certain influence on CATL's major decisions, and supervise the technical confidentiality of sodium batteries,

CATL will also accept a total of 73 billion yuan of financing from Datang Heavy Industries to ensure that Datang Heavy Industries holds at least 10% of CATL's shares, and can also appoint two additional board members.

Of these 10% shares, 7% will be diluted by the original major shareholders of CATL in equal proportions.

The remaining 3% is transferred by financial companies through the stock market.

Because a large part of the lithium battery orders signed by CATL have not yet been delivered, it is impossible to say that the transformation will be fully transformed immediately.

In the initial stage, the main focus was to improve and upgrade the production line with overcapacity.

At the same time, they will stop accepting orders for power and energy storage lithium batteries and gradually complete the conversion of lithium-sodium production lines.

In addition, all enterprises in the middle and upper reaches of lithium batteries also need CATL to coordinate industrial transformation, and the entire project volume and task volume are quite huge.

“…… That's probably the case. ”

Zhang Qing, who had just returned from Ningde, immediately reported to Kangchi on his work.

"They hope that we can send a technical team to guide their R&D technical team to complete the transformation and upgrade of the production line."

After hearing this, Kang Chi also breathed a long sigh of relief, nodded and said, "Let Dr. Yan lead the team." ”

"Okay, in addition, CATL also put forward a request, they hope that we can authorize the relevant patents of solid-state sodium batteries to them, they want to retain part of the production line and R&D department of lithium batteries, and then use solid-state sodium battery technology to manufacture high-end lithium batteries, and the main customer groups in the future are high-end fields such as aviation industry and military industry."

"Well, that's fine," Kangchi nodded directly, "Actually, even if they don't mention it, I'll advise them to do it later." ”

Zhang Qing couldn't help but breathe a sigh of relief after hearing this.

In fact, when she was negotiating, she guessed that Kang Chi should agree to this request, so she verbally agreed to Zeng Yuqing's request, otherwise the negotiation would not have gone so smoothly.

"Then if it's okay, I'll leave first, and I guess I'll have to run to Ningde again in the afternoon."

"Well, thank you...... Wait, I have something for you......"

When Zhang Qing heard that something was wrong, she couldn't help but ask a little nervously, "What's the matter?" It's not going to be a big project again, is it? ”

Seeing Zhang Qing's overwhelmed expression, Kang Chi was embarrassed.

Since she came to Longteng Technology, she has been busy like a spinning top all day long, constantly rotating in Dongyang, Gangcheng, Pingjiang, Modu, Yanjing and other places.

Now there is a CATL era and a battery swap station project......

It's really hard.

But Li Chen's filming of movies is her old job, and she really has to do it.

"That...... Li Chen is going to use Daqin Optics' Tongwu camera to shoot a theatrical movie about me and Wu'an, what do you think? ”

"Ling and Wu An's movie?"

Zhang Qing's eyes lit up after hearing this, and she immediately nodded: "I think this can be had!" ”

"From the perspective of film investment, everyone in China now knows the prestige of your Dr. Kangda, so the gimmick of using you as the prototype of the story already has a certain box office guarantee."

"From a commercial point of view, he used a Tongwu camera to shoot Wu'an, and it was a real cinema movie, which itself is the best way to promote Daqin Optics."

"Especially since he's a college student, a rookie director who hasn't made a movie before, uses a new camera we make......"

"Once the level of movies made by this group is online and can achieve good box office results, then for us, there will be more topics to hype up in the future."

"For example, 'with Tongwu, everyone can be a director', 'Tongwu camera, round your movie dream' and so on."

"This is definitely more effective than spending tens of millions of celebrity endorsements, or advertising everywhere!"

"Take 10,000 steps back and say, even if the box office can't recover the cost, it will be regarded as spending a sum of publicity expenses and giving Daqin Optics a wave of advertising, and it won't lose too much no matter what."

"But there is a premise for all this, that is, even if the story is weak, it's okay, but the shot must be good-looking and amazing! It's better to win a film festival award for Best Cinematography, or Best Visuals. ”

Hearing Zhang Qing's analysis, Kangchi couldn't help but call him an expert!

Although he also felt that this matter was an advertisement for Daqin Optics, he didn't think so thoroughly as Zhang Qing thought about it at all.

Especially the sentence 'With general force, everyone can be a director',

Even college student newcomer directors are no longer minus points, but have become plus points that can be hyped.

simply exerted the ability of the entertainment industry to hype topics to the extreme!

(End of chapter)