Scholar’s Advanced Technological System

Chapter 351: The Dawn of the Lithium-Sulfur Age

After arranging Wei Wen's whereabouts, the ark turned back to the office and continued to prepare his PPT.

During this time, his work will basically revolve around “theoretical models of electrochemical interface structures”.

So after a week, when the Ark finally finished his PPT, he suddenly received a call from Yang Xu.

As soon as the phone was on, an exciting voice came from the other end of the phone.

“We did it! We did it!”

Hearing that exciting tone, the ark stunned slightly and immediately asked: "Lithium-sulfur battery? ”

Yang Xu, holding the phone, nodded vigorously and said with excitement: “Hmm! You're right, we used glucose as a precursor, chose polyaniline ⁃ polypyrrole copolymer as a pore maker, and successfully synthesized hollow carbon nanospheres up to 3022m2g above the surface area and only 69nm in diameter. ”

Drinking a sip, Yang Xu, excited by his tone, moistened his voice and couldn't wait to continue.

“Then, through chemical deposition, we mixed this hollow carbon sphere with a sulfur monomer and assembled it into a battery mold and tested the performance of the battery pack, and the final result was quite encouraging. ”

“I didn't say anything on the phone. I've sent you the relevant experimental data. Take a look! ”

“Okay, I'll be right there. ”

The look on Yang Xu's face was so exciting. The Ark boat also came with interest. He turned off the video call and logged in immediately.

Less than five minutes later, he received an email from Yang Xu.

After downloading the attachments in the mail, the Ark opened the experimental data, roughly collated in pdf format, with a professional reader, and then read them carefully, line by line, starting with the first part.

This experimental data includes not only battery performance test data, but also pictures taken with scanning electroscopes, as well as variation curves based on various data.

As Yang Xu said, this new material exhibits excellent performance and no wonder his voice is so excited.

Compared to the original hollow carbon nanospheres and activated activated carbon nanospheres made of potassium hydroxide, this new hollow carbon sphere exhibits superior cyclic performance with a sulfur composite at 70% sulfur content.

At the macro level, changes at the micro level are quite interesting.

The sulfur ions embedded in the hollow carbon sphere are able to escape normally from the surface pores of the hollow carbon sphere and undergo an orderly electrochemical reaction with the lithium ions moving to the cathode, resulting in the void silencing of Li2S2 and Li2S between the carbon sphere and the carbon sphere, avoiding pore diameter occlusion affecting electrochemical cycle efficiency.

On the other hand, the formation of the long chain compound LiSn (n > 2) is greatly avoided because the charged sulfur ions are in limited contact with the lithium ions moving to the cathode.

It is well known that long-chain LiSn molecules that are easily soluble in organic solutions are responsible for the Shuttle effect, and if the production mechanism of this product is reduced, it is equivalent to stopping the loss of cathode material from the source.

Not only that, but even if limited production of LiSn (n > 2) compounds occurs in the reaction system, due to the surface adsorption of this hollow carbon sphere, this polysulfur compound is trapped in the backbone of the cathode material in large quantities, rather than diffused through the surface of the material into the electrolyte.

With these two layers of insurance, the impact of the shuttle effect has been minimized.

The section documenting the analysis of the physical and chemical properties was overturned, and the ark looked directly at the battery pack test section.

According to the Multigroup Battery Group Experimental Test conducted by the Jinling Institute of Computing Materials, when the sulfur content was 73%, the inhibitory capacity of polysulfur compounds to diffuse to the electrolyte peaked. After 500 cycles, the Kulun efficiency remains fairly high.

When the sulfur content is 75%, the combined performance of the battery is optimal due to a combination of factors such as coolant efficiency, mass energy density, volume energy density, etc.

With regard to this new hollow carbon ball material, Yang Xu named it HCS-2 material in accordance with the naming principles previously established by the Ark.

This new material undoubtedly offers more potential for industrial production than HCS-1 materials with relatively limited industrial application value!

“Perfect. ”

Placing the experimental report on the table, the Ark moved with emotion and then took his cell phone out of his pocket, calling Mr. White Sheridan, the general manager of Startech, and asking him to start applying for an international patent immediately.

In view of the broad prospects for this material in the field of industrial applications, Starscream will build a complete set of patent barriers based on the results of this research by individually registering patents on a range of aspects, including compounds, production, uses, and mixing ratios with sulfur monomers for HCS-2 materials.

If he's optimistic, he can get his patent number by the end of the month, and then he can start writing papers.

The success of HCS-2 material as a model for solving real problems using computational material methods will undoubtedly provide an important factual argument for his theoretical model of electrochemical interface structure.

Compared to this carbon sulfur composite itself, the ship is particularly looking forward to this…

……

White's work was efficient, and it wasn't long before the Ark ordered, and all patent applications were successfully filed.

As soon as he got his patent number, he started writing papers.

He also wrote the last paper on HCS-1, which had a ready-made template that could be applied. This paper did not take too much time on the Ark to complete the entire paper in less than three days.

In view of his series with HCS-1, this time he still chose Science as his subject, sending his contributions to the Science editorial mailbox.

After the submission, the Ark did not leave it behind and began to prepare for the forthcoming presentation at the Maple Society in Germany.

However, this e-mail made it difficult for the editorial department of Science, as opposed to the casual attitude of the Ark at the time of its submission.

Water filling in Science is a pleasure for a lot of bulls, like David Shaw, who worked with the Ark on a theoretical model of the electrochemical interface structure.

And Science very much welcomes these bulls watering themselves, after all, they tend to have enough equipment to make their peers blush, and the paper has an academic reputation and a "flow effect”.

However, Professor Lu's “watering” rate of three submissions in the past six months is a little surprising...

The problem is not with the HCS-2 material itself, but with most academic editors in the editorial department not believing that the ship can make such a significant change on the basis of HCS-1 material in such a short period of time.

Considering the paper on carbon sulfur composites recently published in JACS, as well as the sensational effects in the energy industry.

Anyone has reason to suspect that Professor Lu may be competing with Professor Stanley on a lithium-sulfur battery project, publishing the results of an experiment that has not yet been completed, with some experimental data modified.

It sounds risky, but in academia, there is no such thing as unprecedented.

The editorial department of Science was unsure, and eventually kicked the ball to the reviewer.

Professor Bawandi of Massachusetts Polytechnic University is still responsible for reviewing Professor Lu's text.

As before, the “unbelieving" professor, after accepting the invitation to review the manuscript, continued to pay for himself, repeating the experiment like an honest man according to the experimental report provided by the Ark.

But whether he believed in evil or not, the result was before him.

This time, he accidentally succeeded...

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(Sangen! See, there's no saltfish today! So, um, can you hand over the monthly ticket...)