I am devoted to scientific research, but you want to trick me into having a love relationship?

Chapter 585 Our village has produced Fields Medal winners
March 9, 3 am.

Song Yao went shopping with Ding Jiahui, while Xu Qingzhou first went to the research institute. Zhao Shengwen and Zheng Xu both had rich project management experience, and the other researchers were not novices either. After Xu Qingzhou finalized the plan, everything proceeded in an orderly manner.

He had some free time, so he drove to the School of Mathematical Sciences at Peking University.

director's office.

"What a rare guest, Professor Xu, please come in."

Tao Fangqi looked at the person knocking on the door and warmly got up to greet him. This person was the face of Peking University's School of Mathematical Sciences.

"Dean Tao, did I disturb you?"

"I wish you would bother me every day. Opportunities to discuss mathematics with a Fields Medal winner are rare."

Xu Qingzhou was not reserved and sat down on the sofa. Tao Fangqi was also a scholar in the field of pure mathematics, but he later went into politics.

As Tao Fangqi poured tea, he asked, "Isn't the research institute busy today?"

Xu Qingzhou shook his head and said with a smile, "I'm busy with everything except myself. I just wanted to come here to find something to do, otherwise I'd seem to be doing nothing all day."

"Looking for something to do?"

Tao Fangqi was stunned for a moment.

Xu Qingzhou didn't beat around the bush. "It's like this, if it's convenient, I'd like to offer a course at Peking University."

The office fell silent for a moment, but soon Tao Fangqi's surprised voice rang out again.

"You want to go back to school?!"

"Well, I am an honorary professor at Peking University, so it's normal for me to come back to teach classes," Xu Qingzhou said with a smile. He added that he didn't have the energy to teach students, so it was better to just offer a course and interact with young people more.

Tao Fangqi quickly came to his senses, and a look of delight appeared on his face: "Convenient? How could it not be convenient!"

In fact, there had long been calls within the college to invite Xu Qingzhou back to teach courses.

This is a Fields Medal winner! People online used to say that the title of the top student in the Peking University Mathematics Department was not legitimate. Is there anything more publicity-worthy than this?

Of course, this proposal was ultimately rejected. Not to mention that Xu Qingzhou is a Fields Medal winner, unique in Xia Country, even academicians don't have time to teach students.

Look at those academicians, many of them, after taking on students, simply hand them over to their doctoral students to mentor, and it's even less likely that they'll come to the university to teach.

Tao Fangqi chuckled softly, "I was originally thinking about how to bring this up with you, to ask you to come back and teach a class or give a lecture or something. It seems that we students in the School of Mathematics are in luck. By the way, what would you like to teach?"

Calculus and Analytic Geometry

Before coming here, Xu Qingzhou had already thought it through. Calculus focuses on the mathematical analysis of change and accumulation, covering a complete system from basic limits to complex differential equations, while analytic geometry uses algebraic methods to deconstruct geometric problems and constructs algebraic models of geometric objects from the plane to space.

Both of these use variable mathematics as their core tool.

The content is mutually supportive. Analytic geometry provides geometric intuition for calculus, such as the slope of the tangent line of a curve corresponding to the derivative, and surface integrals relying on parameterized equations. In turn, calculus provides tools for dynamic analysis in analytic geometry.

This is one of his areas of expertise.

“Okay, I’ll arrange it right away. The School of Mathematics doesn’t have any courses in this area yet, and you’ve filled that gap perfectly.”

Tao Fangqi nodded slightly, paused, and then said with a smile, "When will your institute start recruiting interns? There are quite a few promising students in mathematics who you can go and learn from."

“We plan to recruit again at the end of October. As you know, the research institute team is still in the process of getting to know each other.”

The institute can roughly accept 15 interns: 5 each from the School of Mathematics, the School of Physics, and the School of Materials Science and Engineering; 1 undergraduate, 2 master's students, and 2 doctoral students. "Okay, we'll send out a notice in advance so everyone can prepare."

Tao Fangqi nodded with a slight smile. Although they were somewhat disappointed that Xu Qingzhou had switched to the field of physics, the School of Mathematics was, after all, Xu Qingzhou's home. When they went out, they would hear other universities praising their mathematics departments.

They only had one thing to say: "We've had a Fields Medal winner from our area."

In mid-September, the early autumn air began to emerge, with a gentle breeze, making it one of the more comfortable months of the year. The scenery at the research institute was quite beautiful.

Xu Qingzhou had no time to enjoy the coolness of early autumn. He parked the car and went straight to the laboratory. When Zheng Xu came up to him, he asked, "Tell me the problem first."

Progress on lithium dendrite battery packs has been relatively smooth, but in terms of the shuttle effect, Group B has encountered problems with the dissolution and migration control of polysulfides.

Zheng Xu nodded and said directly, "The long-chain polysulfides LiS and LiS generated during the sulfur cathode discharge process are easily soluble in ether electrolytes, leading to irreversible loss of active materials."

Xu Qingzhou took the electron microscope analysis diagram handed to him by Zheng Xu.

[Number of cycles: 0, 50, 100]

LiS concentration (mM): 0.0 ± 0.1, 3.2 ± 0.3, 6.8 ± 0.5

"The concentration of LiS in the electrolyte increased significantly, and the shuttle effect was obvious," Xu Qingzhou said, turning to the next page.

Scanning electron microscope (SEM) images

The deposited particles have a diameter of 1-3 μm and a porous structure with an S content > 60 at%

Ten minutes later, Xu Qingzhou closed the characterization test report and turned to Zheng Xu and the young man beside him: "What are your thoughts at the moment?"

The young man's name is Chai Heng, 35 years old, and he used to work in a laboratory at Oxford University.

Chai Heng and Zheng Xu exchanged a glance and said, "I've discussed with Engineer Zheng that we should start by modifying the cathode material to build a multi-level confinement and catalytic synergy system. We will use CrSSe nanosheets as cathode additives, and their surface polar groups will anchor LiPSs through chemical adsorption, while simultaneously catalyzing their rapid conversion into LiS."

Xu Qingzhou picked up his pen, performed a simple calculation based on Chai Heng's explanation, and nodded slightly. "Not bad, it can solve at least 50% of the polysulfide dissolution problem. But it's far from what we expected."

"Yes, we need to come up with other solutions," Zheng Xu said helplessly.

Xu Qingzhou tapped his fingertips lightly, his brain racing as he pondered for a while before asking, "What do you think of topological insulators and surface state catalysis?"

Zheng Xu and Chai Heng fell into deep thought.

Xu Qingzhou wrote quickly on the blackboard, “Taking CoS as an example, construct its crystal plane model. Use a periodic supercell (4×4×1), and the vacuum layer thickness is >15 to avoid interlayer interference.”

Adsorption energy calculation:

( E_{ads}= E_{LiS@CoS}-(E_{CoS}+
Energy barrier analysis:

LiS→LiS: ΔG=0.45 eV;

LiS→LiS：ΔG=0.09 eV】

The condensed matter approach, the application of topological insulators in spintronic devices, and similar principles can be applied to electrocatalysis by optimizing reaction pathways through spin polarization current.

"Yes, I think it's feasible." Zheng Xu nodded as he looked at the formula.

Xu Qingzhou said, "This is just one direction; we can expand upon this idea."

(End of this chapter)