Chapter 302: I want to hear his opinion

The deposit for the purchase of the instrument is directly from the overseas account of Xingkong Technology to the account of the European instrument manufacturer. After Qian Zhongming signs there, the remaining balance will be credited to the other party's account.
At the same time, those equipment purchased will be sent to Jinling through a special transport company.
The total value of the instruments on this purchase list is more than 50 million US dollars, which translates into more than 300 million RMB.
Considering the importance of this batch of instruments, Qian Zhongming did not hesitate. On the day of his post, he ordered an air ticket the next day and flew to Europe with Liu Bo.
And Lu Zhou was not idle. On the third day of Brother Qian's trip to Europe, Jinling University held a seminar.
The specifications of this seminar are not small, not just professors from Jinda University, such as Yantai University, Mizuki, Zuda University, Aurora and other C9 alliance universities, as well as a group of 211 universities of science and technology such as Jinling University of Technology Professors in the field of synthesis, as well as engineers from battery companies such as BYD also participated in the meeting.
Unlike the academic conference of the MRS conference, this seminar is semi-academic in nature. It does not exchange research results, but discusses research and development directions.
In addition to the scholars and professors who are studying the direction of lithium battery materials, participants also include representatives of the National Science Foundation, representatives of BYD and Shanke and other new energy companies and project R & D engineers.
As for the subject of discussion, it can be seen from the participant's lineup that it is naturally a lithium-sulfur battery.
As an internationally renowned scholar who solved the lithium dendrite problem, Lu Zhou naturally participated in the conference.
The meeting started at ten in the morning, but it was just nine o'clock now, and the meeting room was crowded with people.
It seems that it is because knowing that this topic is very difficult, the task is arduous, everyone's expressions are serious, and the atmosphere in the conference room is very depressed. Even though it was full, I couldn't hear much.
Sitting on the seat with his famous brand, Lu Zhou took a sip of the mineral water bottle developed by him, and took advantage of the gap before the meeting to observe the expressions on the faces of his colleagues.
Overall, the situation does not seem particularly optimistic.
At about half past nine, Lao Lu and the academician of the Chinese Academy of Sciences whispered two sentences.
Seeing that people were almost there, they corrected the microphone and cleared their throats.
"Now that everyone is here, let's not waste precious time while waiting."
Whispering stopped, and the meeting room was quiet, waiting for Lu to continue talking.
"... Energy is the lifeblood of industry. Whoever has the new energy, he has the future. The task this time is very arduous and it is related to the strategic layout of our country in the field of new energy."
"In the last meeting, the senior management of Beijing has decided to take lithium-sulfur batteries as the key development direction, but for how to solve more specific technical problems, we still need everyone's wisdom."
"In this seminar, the discussion is mainly on solving problems."
"If there are any good opinions, I hope everyone can brainstorm and speak enthusiastically and put forward their opinions."
At the meeting, Lao Lu, as the host of the meeting, made a brief opening remarks.
On the surface, this meeting seems to be of little use. What we are discussing is not the existing results, but the ideas for solving the problem. But in fact, the doorway is far less simple than the layman thought.
State and enterprise research funding is limited, and not all projects can apply for adequate research funding.
In general, if the country decides the general direction of lithium-sulfur batteries, the subject of lithium-sulfur batteries will be relaxed in the application of vertical subjects, and other research subjects such as lithium air batteries will be tightened.
The same applies to research.
To solve the shuttle effect of lithium-sulfur batteries, you can start with the positive electrode material, or start with the electrolyte, and then subdivide it down. There are thousands of methods.
However, the bureaucrats of the Ministry of Science and Technology and the Ministry of Finance are not academic.
But it does n’t matter if they do n’t understand, they do n’t need to understand. When making decisions, they often refer to the opinions of some industry bulls and formulate a macro-direction in decision-making. Priority is given to ensuring that research in this direction can receive sufficient research funding.
Under such macro-control, there are always some potential research projects that can produce high-quality results.
It is for this reason that the importance of such seminars is highlighted.
From a personal perspective, everyone naturally hopes that their research direction can be supported by more policies and funding.
That is why, although the atmosphere before the meeting was very depressed, the discussion was quite active after the meeting.
The first to rise up was Professor Wang Haifeng from Zuda University.
After getting up, Professor Wang smiled kindly and said.
"Since Director Lu said, everyone brainstorms and speaks freely. Then I'll just throw some bricks and stones and talk about some of my humble opinions."
"Our research team found a highly ordered nanostructured carbon-sulfur cathode structure in the experiment, which can use the carbon material structural framework to limit the dissolution of sulfur during the charge and discharge process, thereby effectively curbing the shuttle effect."
There was no empty vernacular. As soon as Professor Wang came up, he took out the existing research results and raised his persuasiveness.
With regard to Professor Wang's opinion, Mr. Lu immediately paid attention, and asked earnestly, "What about the cost? Energy density? Is this technology reliable?"
"The cost is not expensive, and the energy density is quite considerable. The theoretical energy density I measured in the laboratory is close to 2000Wh / kg, far more than the lithium-ion batteries commonly used in the industry. I have published a related paper in Materials Science. In the top issue "Advanced-Materials", this technology is not perfect and needs to be improved. "
After a pause, Professor Wang continued.
"In fact, the key to solving the shuttle effect of lithium-sulfur batteries is the mainstream approach in academia at present, which is to use porous carbon materials to block polysulfide ions and reduce the dissolution of sulfur. My suggestion is that we can adopt a similar idea and change The focus of research and development is on sulfur-carbon composites. "
Mr. Lu nodded earnestly.
The secretary sitting next to him was quickly taking notes on the notebook.
After Professor Wang finished his speech, he smiled and nodded to his colleagues, and sat down.
However, before his stool was still hot, a calm and steady voice came from Professor Yan's seat.
"I have something to say too."
Academician Wu Shigang from Aurora, like Professor Wang, is also a bull in the field of materials science.
Seeing the old man, Lao Lu also said respectfully.
"Academician Wu, please."
Correcting the microphone, Academician Wu groaned for a moment and said.
"When I participated in the 863 project and researched lithium-sulfur battery-related issues, I actually considered carbon-sulfur composites. This strategy seems to be effective academically, but the practical effect is very limited."
"The research work in the laboratory is based on very small button cells. The electrodes are very thin and the sulfur load is not high. The total sulfur content is in the order of several milligrams. The actual sulfur content of the battery is relatively large, which is usually grams. Grade, and the electrodes are very thick and the unit sulfur load is high. "
"The laboratory can recycle the sulfur / carbon composite material 1,000 times. In actual batteries, it can only be recycled a few times, and sometimes it can't be discharged even once."
"Moreover, the most common fatal problem with carbon-sulfur composites is that the volume energy density is not high. If it is a 3C product battery such as a computer or a mobile phone, it is better to use a carbon-sulfur composite as the positive electrode. It ’s hard to say. "
Mr. Lao has been doing research in this area since ten years ago, and because he is an engineer-born scholar, he pays more attention to the actual value of a technology than a scholar with a theoretical understanding ~ EbookFREE.me.
Moreover, he is in the direction of solid electrolyte.
However, Professor Wang was unhappy.
But it was not him who refuted, but another professor who was engaged in the direction of carbon-sulfur composite materials, and he was justified.
"You are right, sulfur carbon composites do have defects in this area, but in my opinion, these defects can be solved in repeated experiments. One year ago we thought that lithium batteries were unstable. But now? Who can doubt the broad prospects of lithium batteries? "
Lu Zhou: ...?
Lu Zhou, who did not want to get involved with the Daniels, sat there without saying a word, but was shot inexplicably.
The meeting was very lively.
Although it is not as direct and so horrible as the MRS meeting, but with a little snack, you can hear the guns and arrows in that speech.
Lu Zhou, sitting in the front row, sighed.
Fortunately, the system's scanning gun saved him a lot of research and development costs, and the lithium dendrite technology also sold for a good price. Otherwise, at this moment, I am afraid that he will have to join the battle with his own daring.
Just then, another professor spoke.
"Let me say a few words too."
The speaker this time is Professor Sun Hongbiao of Mizuki University.
In terms of lithium battery materials, Mizuki University ranks slightly lower than Aurora and Yanda in the international rankings, but its influence is also considerable.
However, his speech was a little different from the Daniels who spoke before.
I saw the old professor cough softly and said slowly.
"I noticed that Professor Lu has not spoken, but looking at his expression, it seems that he is well aware of the problem. I don't have anything to say, I just want to hear his opinions."
Lu Zhou :? ? ?