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Chapter 421 Bold Vision
Check it out.

As long as you scratch the itch, you should be able to arouse the old man's interest.

"The laboratory doesn't have any foundation yet, but I will arrange for my secretary to assist you in setting up the laboratory." Su Chen said, "No matter what you need to purchase, you can talk to her."

"At the same time, my plan is to build a laboratory in Boston, because it is close to Massachusetts and Harvard, which is very convenient. At the same time, I will arrange a separate house for you, whether it is in life or work, it can meet your needs. , Professor, what do you think?"

Professor Goodenough said: "Man, my requirements are not that high, as long as there is a place to do experiments."

"In addition to the method I mentioned just now, I also thought of another possibility." Su Chen continued: "Take the flexible packaging as the research and development direction, and try to develop polymer lithium batteries."

"It must first have the advantages of thinning, arbitrary area, and arbitrary shape. Therefore, we can use aluminum-plastic composite films to make battery casings, which can improve the specific capacity of the entire battery."

"At the same time, it must have the advantages of safety, reliability, and long cycle times. Therefore, I put my research direction on the electrolyte of high-potential cathode materials."

"I remember that in 1975, Feullade and Perche discovered that the alkali metal salt complexes of PEO, PAN, PVDF and other polymers had ion conductivity, and made ion-conducting membranes based on PAN and PMMA.

In 1978, Dr. Armadnd of France predicted that such materials could be used as electrolytes for energy storage batteries, and proposed the idea of ​​solid electrolytes for batteries. "

Professor Goodenough listened carefully to these words, and he said: "Man, you continue to say that I am more interested in your general direction."

Su Chen nodded: "Although the polymer electrolyte used in lithium secondary batteries has a complex system formed by PEO and lithium salt, this system has not been applied industrially due to its poor conductivity at room temperature."

"Yes, there is indeed this problem." Professor Goodenough has the most say in the study of lithium batteries for so long.

Su Chen said: "My idea is, if we use blending and add plasticizers to the electrolyte of the polymer, can the conductivity of the polymer electrolyte be improved?"

Regarding plasticizers, it was discovered as early as 1926, so it is completely possible to develop in this direction now.

And these things, Su Chen pulled them out of his head before he went to the capital to go to university, but he only remembered a little bit of the content.

If you really want him to do it, he will also be blind.

Hearing this, Professor Goodenough frowned slightly, then quickly took out what Su Chen said from the briefcase, quickly recorded it, and then said, "Dude, what else do you think?"

Seeing Professor Goodenough like this, both Miranda and Avril had smiles in their eyes.

This oriental man in my family is really different, and he always comes up with some weird ideas out of nowhere.

Su Chen said: "I accidentally learned that phospholithium has an orderly and regular olivine structure, which belongs to the orthorhombic crystal system, and the space group is Pmna, which is a slightly twisted hexagonal closest-packed structure, while lithium has One-dimensional mobility.

Then we can deduce that through this structure, can lithium be reversibly extracted and inserted during the charge and discharge process? "

Professor Goodenough wrote and drew on the paper, saying: "This is a direction, but whether it is feasible or not, we still need to make serious deduction."

"My third thought is." Su Chen said again.

Professor Goodenough froze for a moment: "Dude, aren't you from economics?"

"I personally have a lot of ideas about these, but I don't know how to realize them." Su Chen said: "In fact, I can't even recite the chemistry table, I can only imagine boldly."

"Then tell me what you think."

"If we use a sealed container, then lithium cobalt oxide is used as the positive electrode, the negative electrode is graphite, and the interior is filled with an organic solvent containing lithium salts, such as lithium hexafluorophosphate."

Su Chen continued his idea: "Assume that when we discharge, the lithium embedded in the graphite negative electrode will be oxidized and enter the electrolyte, and run to the positive electrode to be embedded in the lattice gap of cobalt oxide to form lithium cobalt oxide. , lithium should also be able to deintercalate from lithium cobalt oxide, slip back into graphite, and so on.”

"But whether it will work or not, I don't know, because I don't know chemistry, and I need to teach you to verify it. I mainly want to develop a portable, safe, and long-lasting lithium battery."

"It is best to pack it into a columnar shape, or a small flat piece."

Professor Goodenough thought about it for a while, and then said: "Man, if it is according to your idea, let's not talk about whether it will work or not, let's talk about the electrolyte problem first."

"Professor, tell me."

"We know that as long as it is a liquid, regardless of the form in which it is stored, as long as it is used for a long time, it can cause corrosion, from the inside to the outside." The professor said.

Su Chen nodded: "Yes, at the same time, we also know that in lithium-ion batteries, the positive and negative electrodes must not be in direct contact, otherwise a short circuit will occur, causing a series of safety problems.

Therefore, if the electrolyte I am talking about exists in a solid or colloidal form, then it should be possible to avoid the problems of electrolyte leakage and large leakage current in liquid electrolytes.

Moreover, the plasticity of the polymer material is strong, and it can be made into a large-area ultra-thin film to ensure sufficient contact with the electrodes. In this way, since the electrolyte is captured by the network in the polymer, it is evenly dispersed in the molecular structure , The safety of the battery can also be greatly improved. "

"It's really worth studying. As for whether it's feasible, let's study it first." Professor Goodenough looked at Su Chen: "What else do you have in mind?"

Su Chen said with a smile: "Professor, I'm not a god. Where did so many ideas come from? I'll just infer the possible development direction from the research of the predecessors, and you will find out the specifics."

The professor looked embarrassed: "I really want to start research right away. I thought you had a ready-made laboratory."

"Professor, don't worry about this, because I don't know what kind of equipment I need, so please help me to write down what kind of equipment I need, and then I will arrange for someone to order it immediately." Su Chen said.

The professor thought for a while, picked up a pen, swiped a piece of paper and handed it to Su Chen: "Man, if you get these things right away, I think we can start the experiment soon."

Su Chen took a look, but didn't understand.

He handed the piece of paper to the little secretary: "Go and buy these things."

"If she goes shopping, who will answer your call?" Avril Lavigne said, "Let me ask my dad to help, he may know better."

Su Chen thought for a while: "Okay."

With so many colleagues of Professor Ayler, he must be able to get these things quickly.

It happened that it was getting late, so Su Chen invited Professor Goodenough to stay and have dinner together.

The old professor did not refuse.

After eating, we talked about some things, but Su Chen really didn't know anything about chemistry, so he had to talk nonsense seriously:

"Professor, this aspect is not my strong point, but I think the future trend of lithium-ion is to make lithium-ion batteries have higher energy density, power density, better cycle performance and reliable safety performance."

"This is indeed a problem we need to solve. Now, what we need to solve first is the ideas you mentioned. Dude, I am very interested, really." The professor said enthusiastically: "You must get the equipment as soon as possible, Then we can start research right away."

Su Chen said: "Also, professor, I have to tell you one thing. You are the only one in this lab now, and I still need your help to find someone."

Professor Goodenough: "It doesn't matter, it happens that the equipment hasn't arrived yet, so I'm here to find someone, or if the person you arrange is not suitable, I won't be happy at work."

"That's a hard-working professor."

After sitting for a while, the old professor offered to leave.

Su Chen asked, and the old professor said that he hadn't rented a place to live, so he simply sent the old professor to the apartment in the city center. As for Cao Jiaxin, he went to live with the secretary first.

After a night of rest, Avril Lavigne was busy making arrangements for equipment the next day.

And Su Chen and Miranda were busy choosing a site to build a laboratory. As for Cao Jiaxin, she was fine in Boston anyway, so she went back to New York directly.

On the way, Miranda suddenly said, "Su, I have a question..."

(End of this chapter)