Chapter 168 The Future of Lithium-ion Batteries At 5:30 in the evening, Xu Qingzhou walked out of the library and went straight to the laboratory. Just as he expected, everything went fine, after debugging the parameters, he performed variable control. After Ren Xiaoling waved her hand and said "Goodbye, junior", Xu Qingzhou was the only one left in the huge laboratory. Leaving the machine running, he took out the manuscript paper from this period and began to calculate. The progress of the twin prime conjecture remains difficult. To study prime numbers, we first need to have a deep understanding of the internal laws and properties of natural numbers. However, the distribution of prime numbers in natural numbers is extremely complex and irregular, which makes it extremely difficult to predict and prove the existence of prime number pairs. During this period, he verified several methods to prove the twin prime conjecture, but ultimately found that only Zhang Yitang's was effective, and with the efforts of mathematicians, it has been fixed at 246. This means that as long as we continue to use this method and increase the constant from 246 to 2, we will have completely proved the twin prime conjecture. From 246 to 2, it seems to be only one step away, but things are not that simple. This may be how research works. After taking 99 steps, you will find that the remaining step is more difficult than all the previous steps combined.
Xu Qingzhou tapped the paper on the table with his fingers, looking at the various complex formulas on the manuscript. “Is it possible to break away from Zhang Yitang’s GPY screening framework?” Zhang Yitang's method is still a kind of sieve method. He first proved the Bombieri-Vinogradov theorem and obtained an improved GPY sieve method. This approach is hindered by the inherent obstacle of "the parity problem of sieve method". As to whether it is possible to completely prove the conjecture by continuously optimizing existing methods, the mathematical community generally believes that the possibility is very small, and Zhang Yitang himself holds the same view. Xu Qingzhou let out a sigh. In fact, he already had a clear idea of how to solve the twin prime conjecture. Use various sieve methods, Siegel zero-point estimation, L function, automorphic form. Combine the existing achievements, stand on the shoulders of predecessors, and reap the fruits of truth. But it's still very difficult. Ten minutes later, Xu Qingzhou rubbed his temples and planned to go through all the manuscripts again to see if he could find some new ideas from the details. Although the screening method proposed by Gerston et al. is relatively sophisticated, it is not flexible enough and has no room for maneuver to adjust errors. The improved GPY screening method has reached a dead end again. If, the Selberg parameter is changed to a more flexible polynomial function Thinking about it, Xu Qingzhou picked up a pen and started writing on the manuscript paper. The choice of λ is still the Selberg parameter corresponding to the κ+ζ dimension. S=∑\frac{\sigma_{ext{before}} 11 pm. Xu Qingzhou stood up and stretched, put away the manuscript and turned off the instrument. Today he had completed the data collection of laser pulse width and spatial walk-off as planned. I took a quick look at the data and found nothing unusual. He didn't stay any longer, closed the door and went back to the dormitory. 101 Dormitory. Xu Qingzhou was still the first one to return to the dormitory. Kong Xianbo and Zhai Ziqiang were mostly in the library, while Xu Zhengyang felt that playing games in the dormitory was not enough, so he went to the Internet cafe to play with others.
After he finished his shower and lay down on the bed, the two people who went to the library came back. "Lao Xu, are you going to rest so early?" Kong Xianbo was surprised. Xu Qingzhou was looking at rental information online. He put down his phone and said, "I'm a little tired, so I'm going to bed early." Kong Xianbo nodded, spread out his book, took out his notes. Seeing that Xu was resting, he inexplicably wanted to read for another half an hour. This feeling of constantly absorbing knowledge, making progress, and narrowing the gap between me and Lao Xu is fascinating. Seeing that Kong Xianbo started to roll up his paper again, Zhai Ziqiang, who had originally planned to use the fire stick that had been gathering dust for most of the semester and sing a song, gave up and sat down quietly to flip through his textbook. Soon, Xu Zhengyang came back humming a song. Zhai Ziqiang looked up and asked, "Brother Yang, didn't you say you were going to take it seriously this semester?" "That's right." Xu Zhengyang nodded and said with emotion: "That's why I plan to play games as soon as possible during this period and finish all the games this semester." Xu Qingzhou felt that this guy would definitely fail this semester. Zhai Ziqiang sighed secretly. He had studied hard for a whole semester, but in the end he was tied with his roommate who slacked off, with only a slightly higher ranking. Kong Xianbo suddenly felt a sense of crisis. Although Old Xu seemed nonchalant, his strength was there. Once he got involved, a lot of people would be killed. 3 days flew by. These days, Xu Qingzhou and his wife have chosen a house and discussed with the landlady to go and see the house on the weekend. Song Yao's aunt came again and didn't want to move. Xu Qingzhou originally wanted to go and see for himself, but Song Yao stopped him and asked him to go together. At 2: in the afternoon, Ren Xiaoling was asked to supervise the experiment. Xu Qingzhou planned to go to the activity center to attend a lecture, which was a lecture on new energy - the future development direction of lithium-ion batteries. The speaker was Academician Dong Shengyang from the Institute. When Xu Qingzhou arrived, the lecture hall was almost half full. On the podium, an old man with gray hair and wearing a washed-out shirt was looking down at a document. This old man should be Academician Dong Shengyang. Xu Qingzhou also saw his old acquaintance Gong Yunfei. Professor Zhao Shengwen is currently working on lithium-ion batteries and is probably quite familiar with Academician Dong Shengyang, so it is normal to send someone over to do odd jobs. Gong Yunfei also saw Xu Qingzhou and enthusiastically invited Xu Qingzhou to sit beside him, "Junior Brother Xu." The young man wearing glasses beside Gong Yunfei asked, "Who is this?" "My junior brother, Xu Qingzhou." Gong Yunfei introduced with a smile. A hint of surprise flashed across the young man's eyes. This man was the mathematical genius who solved the Cramer conjecture. He extended his hand and said, "I have heard of you for a long time. I am Professor Dong's student, Ge Zixin." "Hello, Senior Brother Ge." Xu Qingzhou smiled and shook hands with the other party. The lecture was about to begin, so Xu Qingzhou and the others did not stand but sat down in the first row. Academician Dong Shengyang did not go through too many false procedures. He greeted the students with a smile and then started to get into the main content. Judging from the current development of lithium-ion batteries in Xiaguo, to the current difficulties encountered, and to the future development direction, it is predicted that lithium iron phosphate batteries and ternary batteries will dominate the world for some time to come, and are basically expected to replace traditional lead-acid batteries.
The lectures given by this veteran academician are very interesting, profound and easy to understand. There is not a boring part in the more than two-hour lecture. This kind of lecture is different from academic exchanges. It does not involve too many technical details. It only narrates from a macro perspective and explains the development trend of lithium-ion batteries. Of course, this is enough for Xu Qingzhou. He used to have a general understanding of the development of lithium-ion batteries in the future, and now he has an overall framework. (End of this chapter)