At this time, when Chen Dezhi found out that the person who came was Shang Yiyun, a smile suddenly appeared on his face, at this time he was solving a problem, and he had been thinking about it for a long time, but he had not solved it.

Unexpectedly, his genius student Shang Yiyun actually came to his office.

"Yi Yun, I have a problem here that has not been solved, you can take a look first, do you have any clues?"

After saying this, Chen Dezhi handed the things in his hand to Shang Yiyun.

Faced with this situation, Shang Yiyun was also a little speechless, he came here to chat with his teacher, but he didn't expect it to become a problem solving.

However, he was also a little curious about what the problem he couldn't solve was what it was?

After taking it and looking at it carefully, he finally knew what this problem was?

This is a difficult problem in the neutron field, and from this problem, Shang Yiyun has vaguely guessed about his teacher's research, but he will not ask more, because this research may involve some confidential research.

He didn't pay much attention to the knowledge of the neutron field before, so it was weaker than the field of materials science and new energy, but it was only relative.

Of course, this problem, for a moment and a half, Shang Yiyun didn't think of a way to solve it, it's right to think about it, after all, it's a problem, if it's very easy to solve, it's not a problem.

Thinking of this, Shang Yiyun calmed down and began to study this topic, just like that, the office fell into relative silence, no one continued to speak, only the sound of the tip of the pen sliding on the paper, at this time, Shang Yiyun was making calculations on a piece of scratch paper, and it didn't take long for the entire scratch paper to be full of symbols.

The name of this research is Spallation Neutron Source Project, which has a wide range of application prospects in many fields such as materials science and technology, life science, physics, chemistry and chemical engineering, resources and environment, new energy, etc., and will be of great significance for China to explore cutting-edge scientific problems, overcome key core technologies in the industry, and solve the problem of "stuck neck".

The application of polarimetric neutrons is one of the important fields of spallation neutron source application in China in the future, and polarimetric neutron scattering is the only technology that can indiscriminately separate magnetic scattering and nuclear scattering, and is a powerful means to study complex magnetism and high-temperature superconductivity.

The spin indexing technique derived from the polarized neutron technology can significantly improve the measurement range and measurement resolution of neutron scattering, and the polarized neutron has far-reaching significance for fundamental physics research, particle physics and astrophysics.

However, in the research of spallation neutron source engineering, the fast-cycle synchrotron is a technical problem in the research, which Chen Dezhi asked him to solve.

As long as this problem is solved, the research can be continued.

At this time, foreign countries have relatively advanced fast-cycle synchrotrons, but this technology is not oriented to China at all, even if some research data is provided, but the process is not easy, so everything can only rely on themselves.

Although he is not as proficient in the field of neutrons as in the field of materials science, in the first semester of his freshman year, after Chen Dezhi became his teacher, he once made up for the knowledge of the neutron field, and now he can use it.

He didn't know much about fast-cycle synchrotrons before, but after carefully reading the manuscript handed over by the teacher, he also had some understanding of this kind of thing.

Of course, now it is not for him to develop such an instrument, but a problem encountered in the process of research, which is undoubtedly much simpler than the study of the entire instrument.

After thinking about it for a while, Shang Yiyun also had a general idea in his heart, but he was not sure whether it would be useful or not, so he wrote down his thoughts on the manuscript paper.

Of course, he only provided some theories, and it was none of his business whether the research would succeed in the end.

In the following time, Shang Yiyun communicated with his teacher for a while according to this question, and found that it was already six o'clock in the afternoon, and he originally came to the teacher's office just to communicate with his teacher, but he didn't expect it to become the current situation.

"Teacher, I have something to do tonight, so I'll leave first. After finishing speaking, Shang Yiyun waited for his teacher's reply.

But after waiting for a while, Shang Yiyun took a look at it and found that his teacher was holding the manuscript he had written and reading the contents carefully.

For this situation, he was a little helpless, so he could only repeat what he had just said.

At this time, Chen Dezhi reflected. "Well, since you have something to do, then leave, and when you go, don't forget to close the door. ”

After saying this, Shang Yiyun found that his teacher lowered his head and continued to look at the manuscript he had written, making a sound of admiration from time to time.

After walking out of the teacher's office, he was going back to the dormitory first, and the dinner time was 7 o'clock in the evening, so there was still an hour to go, enough time for him to go back to the dormitory, and then make some preparations.

When he returned to the dormitory, he found that there were only two people in the dormitory, Shen Fengyu and Tian Xiaoyue, as for Yue Xiaolei, he was not in the dormitory, and it was right to think about it, Yue Xiaolei was a member of the student union of the college, and in his sophomore year, he was expected to become the head of the student branch of the college, so he was very busy, and it was common to find no one in the dormitory.

He was used to it, so he said hello to Shen Fengyu and Tian Xiaoyue, then took a hot shower, changed his clothes, and sat on the chair for a while, then he left the dormitory and went to the place where he had dinner.

It was a restaurant near the school, and because there were only three people, this dinner was just a dinner together, and a few beers to celebrate.

Thinking of this, Shang Yiyun went to the restaurant slowly, and when he arrived, it was already 6:55, but there were still five minutes before the agreed time, and it was not too late.

Just now, when he was on the road, he had already called Cao Xun and Zhang Liu, and also determined the location of the other party, so he walked directly into this restaurant, and then went directly to the location provided.

Finding the location of the two people, Shang Yiyun sat down, this restaurant, you can order food on your mobile phone, scan the QR code on the table, and the interface for choosing dishes appeared, he clicked one, and then handed the phone to the two of them and asked them to order one each.

The two of them chose mapo tofu and a plate of fried chicken respectively, and the mobile phone returned to Shang Yiyun's hand, seeing this situation, Shang Yiyun ordered another dish and three bottles of beer, and then sat on the table and waited.

While waiting, the three of them talked about some topics related to new energy, Cao Xun and Zhang Liu are both students majoring in new energy, and they are naturally no strangers to this topic.

In this regard, Shangyi Cloud also has a relatively strong knowledge ability, otherwise it would not have set foot in the field of new energy.

Just as the three of them were talking, the meal they had ordered had already reached the table, and there was also a small pot of rice.

In this restaurant, rice and steamed buns are staple foods, you can order anything you want, and finally ordered a small pot of rice, since the meal was ready, Shang Yiyun opened three bottles of beer, one bottle per person, and had a drink before eating.

Wine is a thing that connects feelings, there is a way to drink a thousand cups of confidants, of course, drink in moderation during this dinner, if you drink too much, it is not beautiful.

In this way, the three of them chatted while eating, drank a glass of wine every once in a while, talked and laughed, and the atmosphere was very harmonious.

It lasted for half an hour, and Shang Yiyun wanted to treat him to this dinner, so after eating and drinking, he went to the front desk to settle the bill.

This dinner, the cost is not too big, after settling the account, Shang Yiyun is ready to walk outside the school, while Cao Xun and Zhang Liu are preparing to go back to school, after leaving the restaurant, the three of them go their own way.

At this time, it was close to eight o'clock in the evening, and Shang Yiyun walked outside the school for a while before returning to the dormitory.

At the dinner party just now, Shang Yiyun told Cao Xun and Zhang Liu about the next plan, and he would continue to do the experiment tomorrow, but considering that there were classes in the morning, the time of the experiment was arranged to the afternoon.

Back in the dormitory, Shang Yiyun found a book in the bookshelf, then lay on the lounge chair and began to study the knowledge in the book seriously, he would read at least one book every day, and the books he read every day were different and involved in different fields.

Of course, the research in the field of materials science has come to an end, so he plans to wait until he studies it again in the future.

It's night, so he doesn't plan to read a book for too long, because reading a book under the light for a long time will affect his eyesight to a certain extent, and he doesn't want to wear glasses at such a young age.

But with this thought, after reading a book under the light for an hour, Shang Yiyun climbed into bed and prepared to rest.

It's half past nine now, and although there is still an hour before his usual rest, it's still okay to lie in bed and think about some questions.

Thinking of this, Shang Yiyun lay on the bed and closed his eyes, closing his eyes and thinking about problems, which was also a habit he had formed for a long time.

At this moment, he has been thinking about graphene iron phosphate ion batteries, and now that graphene vanadium oxide batteries have been successfully developed, they need to be continuously improved, although there will be some difficulty, but the difficulty is not too great.

When the graphene vanadium oxide battery is perfected, and then the patent is applied, the research on the graphene iron phosphate ion battery will be carried out.

This graphene battery is very different from the first one, so it will take some time to work it out.

However, now many domestic related companies have been at the forefront of the research on graphene batteries.

In recent years, with the acceleration of the industrialization of electric vehicles, the domestic investment momentum of lithium iron phosphate industry exceeds that of other countries, the domestic graphene modified lithium iron phosphate patent technology first appeared in 2009, after 7 years of technology accumulation, as of the first half of 2016, a total of 267 applications have been made, and its development trend is roughly divided into the following three stages: 2009-2010 is the initial stage of development, with an average annual application of 10; 2011-2014 is a stable development stage, with an average annual application of 40; 2015 has entered a stage of rapid developmentIn 2015, the number of applications reached a peak of 73.

Founded in 1999, Dongliu New Energy Technology Co., Ltd. is a high-tech enterprise specializing in the production of rechargeable lithium-ion battery cells, packaging and system integration, and is in a leading position among the world's professional lithium battery manufacturers, as of the first half of 2016, the company has applied for a total of 885 domestic patents, including 5 patents for graphene modified lithium iron phosphate batteries, and the production of lithium-ion battery polymer lithium-ion batteries are widely used in consumer electronics such as notebook computers and mobile phones.

Founded in 2009, Jiangnan Leoneng battery is one of the few high-tech enterprises specializing in the production of nano-scale lithium iron phosphate cathode materials in the world, as of the first half of 2016, the company has applied for a total of 35 patents, including 4 patents related to graphene modified lithium iron phosphate batteries, it is reported that the company has manufactured the world's smallest mass production of nano spherical lithium iron phosphate cathode materials, the material's gram capacity, rate performance, self-discharge performance, Ranking first in the world in many indicators such as low-temperature performance, Leneng is currently a supplier of industry leaders such as ATL, AVIC Lithium Battery, Wanxiang, and BYD.

These are some of the more well-known companies, and they are also in the leading position in the research of graphene batteries.

Knowing this situation, Shang Yiyun's heart also ignited a fighting spirit, and he believed that as long as he continued to work hard, he would definitely be able to make achievements.

Lithium-ion batteries have become the main direction of new energy development due to their advantages of fast charging and discharging, no memory effect and high capacity, and lithium iron phosphate, as a cathode material for lithium-ion batteries, has gradually become the main material for power lithium-ion batteries due to its wide range of raw material sources, environmental friendliness, and safety of use.

However, lithium iron phosphate limits its large-scale application in lithium-ion batteries due to its low conductivity and energy density, so it is the key to research to modify lithium iron phosphate to make it have excellent rate performance and cycling performance.

The preparation of graphene and lithium iron phosphate, and the modification of two different types of carbon sources, carbon and graphene, to optimize the preparation of lithium iron phosphate graphene composite cathode materials with superior performance, is the main content of the research.

After thinking about it for a while, Shang Yiyun let go of what he was thinking in his heart and entered his dream.

The night was dark, and the lights were still bright outside the window, but all this had nothing to do with Shang Yiyun, at this time, he was already asleep.

The next day, when the biological clock time came, he got up and dressed, and then got out of bed to wash, today's weather was very good, very suitable for exercise, of course, he also had to go to Huaguo Normal University.

After the previous exercise, running to exercise has become Chen Feiyun's habit, and today is naturally no exception.

After washing, Shang Yiyun went to Huaguo Normal University.