Chemistry is a big pit, and although it is not as big as biology and materials, there are still many graduates buried in it.

One reason is the danger, especially in organic chemistry, which requires constant dealing with reagents. Don't think that if you memorize the safety manual, you won't even know what's going on in the reaction room.

Another is salary, although many lists related to graduation starting salary like to rank applied chemistry first, but in fact the situation is different. As for why you say that, just look at the overall environment of the entire chemical industry, and don't make an evaluation.

However, Lu Zhou felt that at least the last one, Han Mengqi did not have to worry.

Anyway, even if she studies chemistry, she may not necessarily do this in the end, and even if she does this business, she doesn't rely on this to buy a house, anyway, she has a rich old lady......

Guided by Senior Sister Chen, who was sitting in the co-pilot, Lu Zhou was responsible for driving and taking pictures, and the four of them played in Philadelphia all day.

Perhaps because the joyful atmosphere diluted the depression in her heart, Han Mengqi's mood looked a lot better.

But the one who had the most fun was Xiaotong, this little guy seemed to have endless energy, and he didn't stop chattering from beginning to end along the way.

Because the lively and active Xiaotong herself has a bit of a self-cooked personality, she quickly got acquainted with Senior Sister Chen and Mengqi, and took advantage of the rest in the fast food restaurant to add each other> especially when she learned that Mengqi was also playing the king, Xiaotong didn't even eat half of the hamburger, and opened the game without saying a word.

Looking at the game interface in Xiaotong's mobile phone, Han Mengqi asked with some surprise: "You also play King?" ”

Xiaotong said proudly: "Play, play, I'm amazing." ”

Han Mengqi continued to ask with interest: "What rank are you?" ”

"Diamonds!" Xiao Tong looked confident, paused for a moment, and continued, "But for the time being, my data is still bronze, but there is no doubt that my strength has reached the diamond level, and it is only a matter of time before I get that frame." ”

Han Mengqi: "......"

Hearing the conversation between the two, Chen Yushan, who was biting the Coke straw, held back a smile, and Lu Zhou, who was sitting next to him, rolled his eyes.

There is no doubt that regarding stubbornness, she definitely meets the level of "stubborn bronze".

Other than that, it's probably a little bit worse......

……

With the arrival of Xiaotong, Lu Zhou's daily life has changed too much, and the only difference is that there is one more person to take care of, and the place where he sleeps every day, from his bedroom to a sofa.

Although his original plan was to move out of the student apartment when he returned to Princeton, he had not yet chosen a new address.

He now has two options, a faculty apartment for him at the Institute for Advanced Study in Princeton, and a small two-story cottage with a front yard and garage between Princeton University and the Institute for Advanced Study.

In fact, it is said to be a villa, just an elegant name, this kind of country cottage is very common in the United States, even if you have not been there, you can see it in American dramas. In a rural country like Princeton, the average price of such a house is only $200,000 to $300,000, and the rent is not too expensive.

Lu Zhou's original intention was to choose the latter, because it was convenient to park. But the owner of the house is a stubborn old New York man, who only sells and does not rent. And Lu Zhou only has $500,000 on him now, although it is not that he has no money to buy it, he does not want to use half of his net worth to buy a house that will not be lived in for a few years.

After all, he will return to China in a few years, and there is definitely no cost-effective way to buy a house and rent it.

Although Lu Zhou also considered other houses, they were either not suitable or had already been rented out, so the matter of moving was put on hold.

Fortunately, Xiaotong is not picky about where he lives, except for always pulling his arm every now and then, begging him to drive him to Philadelphia to play with his senior sister, Lu Zhou didn't feel too troublesome during this time.

This busyness was interspersed with a leisurely life, which lasted until late August, when a new issue of Nature Chemistry was published......

……

In late August, just after the Rio Olympics ended, the news hotspots had not yet withdrawn from the condemnation of the black whistle, and a piece of news quietly appeared on the technology pages of major newspapers.

The cause was a paper published in Nature Chemistry.

Its title is a simple one-line word, but it catches the eye of everyone in the industry.

There is no other reason.

Because the contributor proposed a new type of PDMS material, and claimed that the problem of lithium dendrites can be effectively solved by spin-coating the material on the surface of the negative electrode lithium. If the paper had been published in other journals, it might not even attract much attention.

However, this paper was published by a sub-journal of Nature!

The originally calm field of materials science and batteries suddenly set off stormy waves.

Although it is not the first time that the materials science community has been shocked by the "breakthrough" of lithium batteries, this time it is obviously different, because the reviewer is Professor Bawangdi, and according to the reviewer's evaluation, he seems to have made amazing discoveries through repeated experiments......

Such astonishing news will naturally not be simply buried.

A few days after the paper was published, after receiving positive opinions from several industry leaders, it was highlighted by the main journal "Nature" and "Science" that were published shortly after.

The so-called "Highlights" is probably similar to a reprint, but it is not the same as a reprint.

For example, if you publish an article in journal A, and the article has a major breakthrough in a certain field or direction, and it is favored by journal B, the journal will find a person in the field to summarize the highlights of the article you posted in journal A and publish it in journal B (there are also those who write their own highlights).

This situation is relatively common in the fields of chemistry and biology, and it is not new for articles published in sub-journals to be selected by the main journal, but it is relatively rare for articles published in both Nature and Science to be highlighted.

Compared with the calmness of industry, the attitude of the academic community towards this paper can be described as "fanatical".

If this paper is true, most of them will not benefit from it, but will benefit from it.

The reason is very simple, the industry's concerns about lithium batteries are mainly focused on a series of safety problems caused by lithium dendrites. If the problem of lithium dendrites can be successfully solved, there is no doubt that large amounts of R&D funds will pour into this field.

Even if a few laboratories working on anode materials are cut off, more funds and topics will pour in.

Therefore, in less than a week, almost 80% of the laboratories that study lithium batteries have carried out repeated experiments on this paper.

The pomp and circumstance soon attracted the attention of the press.

A reporter from CBD's Science and Technology program did an interview with Professor Ross Krell at Cornell University.

Coincidentally, when the Columbia TV reporter arrived, Professor Krell's lab was in the process of repeating the paper, and it was already in the final stages.

When asked about the significance of the technology, Professor Krell said with a serious face.

“…… Our research team is repeating the experiment, and if this isn't an accident, there is no doubt that this technology will change the face of the industry. ”

"Because whether it is a lithium-sulfur battery or a lithium-air battery in the concept stage, the dendrite problem cannot be avoided. On the other hand, the problem of lithium dendrites can be solved in the anode material, and we don't even need to make too many changes to the previous design, just replace the anode material. ”

Professor Krel's answer made the reporter's eyes sparkle with excitement.

There is no doubt that the big news he wants is right around the corner.

"But Professor Krel, according to the feedback we got from interviewing the former head of the lithium-air battery project at IBM Group, the industry is pessimistic about this technology, what do you think about this?"

Professor Krell thought for a moment and replied: "It's normal to be pessimistic, because every once in a while there are labs that claim to have solved the lithium dendrite problem, and it is necessary to be cautious about new technologies. To be honest, even now, I remain skeptical, because the solution mentioned by the contributor in the paper is not new, or even a bit outdated. ”

The reporter immediately asked: "Why do you say that?" ”

Prof. Kreer: "Because the mainstream approach now is to increase the viscosity of the electrolyte, even to the point of using solid materials. Or make a carbon material structure on the lithium anode, which restricts the shape of lithium metal after growth during discharge, and can also ensure that the negative electrode structure does not collapse after all the lithium enters the positive electrode during charging. In fact, the design of coating the anode material adopted by Professor Lu has been tried countless times in many laboratories 20 years ago. And ......"

Reporter: "And? ”

Professor Krell shrugged, "And he's a professor of mathematics. I didn't know much about computational materials, a new discipline that has only recently emerged, but even then I knew that there were many things that modeling alone wasn't enough. ”

However, at this moment, cheers suddenly sounded in the laboratory behind him.

After hearing this voice, Professor Krell and the reporter were stunned.

Reporter: "What happened?" ”

Professor Krell and his assistant looked at the reporter with a strange expression.

"I don't know...... Maybe it was a success? ”

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