Rebirth of the Military Industrial Overlord

Speaking of lithium-ion secondary batteries, also called lithium-ion rechargeable batteries, this gadget that had been rotten on the street before Tan Zhenhua was reborn, was definitely a tall black technology in the early 1980s.

According to Bluestar’s normal scientific and technological development, it was not until 1991 that the first lithium-ion battery that could be used commercially was produced and put into the market by Sony Corporation of Japan. Because of its high energy density, light weight, high voltage and cycle The high number of charging and discharging has quickly achieved great success.

However, the first-generation lithium-ion batteries still have various hidden dangers, which have caused many fire accidents. It was not until 1999 that the second-generation lithium-ion batteries, that is, polymer batteries, were put into commercial production, which basically solved this problem. Why is the battery safety problem basically solved?

Of course it was an accident.

In the past, Tan Zhenhua had bought a certain Samsung mobile phone...yes, it was the one that was later recalled globally because of multiple deflagration accidents caused by the built-in lithium-ion polymer battery. This incident once caused quite a sensation, and Tan Zhenhua had nothing to do with the Internet to learn about the past and present and characteristics of this rechargeable battery. Unexpectedly, it came in handy today.

Thanks to Samsung, he thought to himself, and then said: "As far as I know, the international secondary battery research is currently focused on two hotspots. One is the nickel-metal hydride battery that you have made a verification sample, and the other, It’s the lithium ion direction."

"The reasons why I suggest you take the lithium-ion route can be attributed to several aspects:

First, in this direction, no one has achieved subversive results in the world. If you make a breakthrough, then this achievement is by no means comparable to NiMH, because this is not filling the domestic gap but the international leader;

Second, as I just said, avoiding competition with other domestic research teams is conducive to obtaining national support;

Third, we can avoid patent disputes with other companies in the world. It is even possible that we can firmly control the patent rights of this battery in our own hands, so that those people can also taste the taste of patent barriers. "

"Oh? Zhenhua also knows about patents?" Wang Jishan asked with interest.

As a scientific researcher who often has access to foreign materials, he is not unfamiliar with patents. Professor Guo is familiar with foreign research materials and is familiar with this. Tan Zhenhua can solemnly put forward this concept, which is somewhat out of the ordinary. The expectation, after all, no one in China pays much attention to this stuff.

Tan Zhenhua nodded affirmatively: "Yes, I know something about it. In fact, I am planning to apply for international patents for some of my own products. Of course, we have to keep the good things of our own country. Others want to be able to use the money. Change, no money to avoid talking."

Guo Rongwei laughed and said, "I will add one more point. This is the direction that Tan Zhenhua suggested that Pharaoh Wang should take, so that he can monopolize the market and make a lot of money!"

Tan Zhenhua smiled shyly: "Making money is of course also important. Only by earning a lot of money can we invest in research and development of newer and better products and drive our technological progress. It is unrealistic to count on state funding for all projects. I don't want to One more "Yun Ten".

The word "Yun Ten" that Tan Zhenhua casually uttered in the office of a professor at Ninghang University was simply a big scar in the hearts of all aviation people, and Guo Rongwei was silent for a while.

Wang Jishan is not a person in the aviation industry. He just probably knows that China is developing this large aircraft. When the prototype was tested for the first time, the news media all over the country was very busy. Seeing Guo Rongwei's silence, he asked Tan Zhenhua curiously, "What's going on? Are all the projects that have already flown to the sky also cut off?"

Tan Zhenhua pointed at Guo Rongwei, meaning that you asked the wrong person. That person is in the industry. The news is more reliable.

Guo Rongwei sighed: “I’m afraid it’s impossible to keep it. The investment in this project is too much. The above is a bit too much to eat. The civil aviation side has clearly stated that it is not necessary. The market situation is worrying. The materials are not good enough, and the engine is even more troublesome. And now the United States is open to our country’s civil aviation procurement. As long as you have money, you can sell any aircraft. Therefore, the above has been reduced several times and the "shipping ten" has been delayed. Appropriation, it seems that this project is probably going to be yellow."

After all, he hung his head and said nothing.

Wang Jishan also sighed and compared his heart to his heart. He was cut down on a small project of 50,000 yuan and felt distressed like that. What kind of feelings should those thousands of people who have worked hard for the "Ten Ten" for many years?

Sighing, sighing, it’s still his own business that matters. He asked Tan Zhenhua: "Zhenhua, what you said is reasonable, but according to some foreign materials I have read, the current research on lithium ion secondary batteries has encountered problems. There are two main reasons to overcome the difficulties:

The first reason is that metallic lithium is the most active metal, which can react violently with air and water, so it is more dangerous;

Another reason is that someone conducted a charge test on a lithium battery invented in 1970, and found that it is very easy to form lithium dendrites during the charge and discharge cycle, and the lithium dendrites will damage the internal structure of the battery and cause internal short circuits, which is serious Security risks. "

Tan Zhenhua smiled and said: "Yes, what you said is good, but there is actually a way to solve it. According to the information I have learned, lithium ion has the characteristic of intercalating graphite, and this process is fast, reversible, and can be used. Used as negative electrode material;

As for the cathode material, lithium cobalt oxide or manganese spinel and lithium iron phosphate can be considered, and the electrolyte can be an organic electrolyte in which lithium ions are dissolved.

In this way, in the process of charging and discharging, there is no metal lithium, only lithium ions, which avoids the growth of lithium crystal branches, and the safety performance of this battery will be greatly improved. Of course, in order to prevent the internal short circuit of the positive and negative electrodes, a polymer is required. It is separated by the diaphragm of a polymer. This polymer diaphragm should have the characteristic of passing lithium ions but not electrons. However, I don’t know much about this, and I need to explore it myself. "

The more Wang Jishan listened, the more excited he became, and the more he listened, the more excited he became. After Tan Zhenhua finished speaking, he grabbed Tan Zhenhua’s hand and said, "Zhenhua, what you said is true? Why did you say this? I have never heard of it. Ever? Where did you get the news? If it is exactly what you said, then we are more than a big step forward in preparing lithium-ion secondary batteries with practical value. It can be said that we have already stood on the threshold!"

Tan Zhenhua really wanted to tell Wang Jishan that this was checked from Du Niang when he was temporarily curious. Unfortunately, this reason is really unexplainable. He can only pretend to be unpredictable: "I have a good friend, and Professor Guo also knows him. He is Guoan..."

Well, this trick has been used at Ludong University last time, but the effect is surprisingly good. Trying it again today, it really calmed Wang Jishan.

Hearing Tan Zhenhua’s words, he waved his hand quickly: “Don’t talk about it, let’s say it’s a leak, don’t ask if you shouldn’t ask. I know this discipline. It seems that our comrades have worked so hard to get it abroad and are testing it. I know that these are enough. I can start the experiment immediately when I go back and try to get the results as soon as possible. This time I went to Ningdu and it was really right. Not only did it solve my heart disease, but I also had a great surprise!"

Having said that, he laughed to himself, halfway through his laughter, suddenly stopped his voice, and asked nonchalantly: "Zhenhua, what grade are you in this year? What major do you study?"

Before Tan Zhenhua had time to answer, Guo Rongwei had already asked alertly: "Pharaoh, what do you mean?"

Wang Jishan didn't bother, and he said directly: "I like this kid. I want him to go directly to my graduate school. What future do you have? Besides, isn't our Harbin Institute of Technology louder than your Ninghang sign?"

Guo Rongwei was immediately angry. What he said was too hated. He even dared to ridicule the entire Ninghang University on the site of Ninghang. It is absolutely unbearable whether he is uncle or aunt!

He patted the table and yelled: "Oh, you old man, you are going to be a white-eyed wolf. You can demolish the bridge before the river is over, the ladder is drawn before the house is up, and people dig my corner before they go out. I asked you all the way to help you solve the problem, how did you return me?"

Wang Jishan didn't blush: "The world's talents, only those of virtue live!"

Guo Rongwei just wanted to scold again, and suddenly remembered something, he couldn't help but laughed, and pointed to Tan Zhenhua: "You old man wants to take advantage of a good ready-made apprentice, but unfortunately, the shrewd abacus made a mistake. If you don't believe it, you let him speak for himself. ."

Tan Zhenhua looked at Wang Jishan's questioning eyes and answered honestly: "Professor Wang, I'm only a third year in high school this year, and I haven't gone to college yet!"

Wang Jishan was stunned, and asked: "Then why did you become his apprentice?" After that, he pointed to Guo Rongwei who was proud of himself.

Guo Rongwei said strangely on one side, "What is this? He also has two masters, and they will scare you when they say their names. One is Song Wenhua from Rongcheng 3603, and the other is also in Ningdu. It is 4014 Benfang. , Pharaoh, you are late!"

Wang Jishan was really taken aback. The so-called shadows of the famous trees and the masters of Tan Zhenhua, although they have not yet reached the peak of their career reputation, they are also leaders in the industry in which they are engaged. Naturally, everyone’s reputation In the same Chinese science community, they are more or less overlapping.

However, this child Tan Zhenhua is really pleasing. He didn't want to give up, so he rolled his eyes and thought of an idea: "Zhenhua, that's just right. I don't care how many masters you have worshipped, you still have to go to college, right? Your first choice is to fill in our school! As long as you can get to the score line, you can change the gear and everything, it's my responsibility!"

"Hahahaha," Guo Rongwei couldn't straighten up his waist and laughed. Tan Zhenhua had no choice but to explain: "Professor Wang, I have already taken the TOEFL test, and I feel that my score is pretty good. I want to go to the U.S. for university next year. "

Wang Jishan found out that he had been in trouble for a long time. Apart from offending Guo Rongwei, he didn't catch anything, and he couldn't help but sighed: "You said you are such a good boy, why don't you want to go abroad?"

Tan Zhenhua rolled his eyes and asked what he was saying. Why did it sound so awkward? Replacing the word "going abroad" with "jumping a building" seems to sound more fluent...

Pooh, pooh, crow's mouth! I’m alive and moist, little master. In the future, I will punch John Bull, kick Gaul chicken, anger the bald eagle, and give the bear incense by the way...

You said I have such a great ideal, why can't I think about it?