Chapter 504

The feeling of armchair strategy and actual operation is completely different.

To put it vividly, holding a three-star Michelin recipe, the grams of salt are precise to two decimal places, and the heat is broken down into thermodynamic formulas. You believe that as long as you strictly follow the steps of "β-carotene undergoing the Maillard reaction at 180°C," you can replicate the perfect beef bourguignon in the photo.

But in the experiment, you find that the stove's heat is unstable, the spatula is rusty, and there are only expired curry cubes left in the fridge.

Even if these are all fine, there will still be subtle differences between the finished product and the theory due to differences in heat, timing of cooking, and other issues.

That's why they say knowledge gained from books is ultimately shallow.

In the laboratory, Xu Qingzhou was checking the equipment but suddenly felt a chill on his back; he looked up but didn't find anything unusual. What surprised him more was that Song Yao and Sun Simin were actually chatting in the office.

"Must be an illusion."

Xu Qingzhou shook his head, finished checking the equipment status, and began to operate. Except for the last time in Professor Zhao Shengwen's research group, this was his second time making a battery.

First, he cut the lithium foil with stainless steel scissors in the glove box.

Then, he wiped the surface lightly with a dust-free cloth dipped in DMC (dimethyl carbonate) to remove the oxide layer and impurities, immediately transferring it to a glass bottle and filling it with argon for storage.

Although it was only his second time operating, the whole process was still smooth.

This was like a master who had ascended, practicing an unfamiliar technique; although he had just come into contact with it, his own cultivation experience was all there.

After a long while, Xu Qingzhou carefully fixed the cut lithium foil onto the ALD sample stage and started the ALD program to deposit 20 cycles of Al₂O₃.

20 minutes passed.

"Right, finally at the critical moment."

Xu Qingzhou took out the sample, concentrated his attention, and used tweezers to place the components in order: negative electrode shell to negative electrode, then to the separator soaked in electrolyte...

Finally, he placed the positive electrode shell, ensuring the center of each layer was aligned, with a deviation of 50μm and a density of 12.3g/cm³.

Lithium dendrites were like thorns growing wildly, sharp and disordered, potentially piercing the battery's separator at any time.

The result wasn't very good; it was a bit worse than he had expected.

"At least I took the first step."

Xu Qingzhou rubbed his aching temples, downloaded the data to his hard drive, and brought a thick stack of data charts home.

Song Yao was going on a business trip on the 20th.

He had to go back earlier.

First, to see what work arrangements Song Yao had.

The essence of high-frequency trading is the combination of mathematics and algorithms, which is quite troublesome to do.

Song Yao spent two whole weeks sorting out the statistical arbitrage and pricing models and his previous work content; next, it should be the liquidity hunting and game theory models.

As for the second point, if there's work, naturally one must seize the time to ask for clarification before Teacher Song goes on her business trip.

(End of chapter)