Chapter 317: Move fast!

The hardware level of Flick Chemical Labs is indeed the top level in the United States. The wealthy Princeton is not only willing to spend money on professors, but also has no ambiguity in the investment in instruments. ∑>
He consciously moved the latest high-precision battery test system, and Connie looked at Lu Zhou with a thick smile.
"The best battery test system in the entire Frick chemistry lab is this guy, I borrowed it for you!"
Lu Zhou: "It is not practical for such a good battery test system ..."
Connie explained: "But you said that it is better to invest in the instrument than to spend the budget on samples consumed by repeated experiments."
Staring at Connie, Lu Zhou suddenly felt that the boy was not as mean as he looked.
The money for the purchase of the machine was recorded in his account.
If it had been before, Lu Zhou would definitely be distressed for a while.
But now ...
Well, the waste is shameful, and he still feels a little distressed.
But it doesn't hurt that much.
Leaving the instrument aside, Lu Zhou asked with a serious face: "Will the battery sample do?"
Connie immediately said, "No problem, it's easy!"
Lu Zhou thought about it and made a command: "You are responsible for samples 11 and 14, I am responsible for samples 15 and 23. Mix the hollow carbon sphere powder with elemental sulfur according to the mass fraction of 30%, 20%, and 10%. , Make a positive electrode material, and then assemble a lithium battery, how do you understand? "
Connery straightened his chest, "Of course!"
There is nothing to say about the negative electrode material, because the synthesis process is simple, and now the combination of modified pdms film and copper core lithium sheet is not only the standard in the industry, but also the standard in major materials research institutes.
As for the cathode material, it takes a little thought.
Not just hollow carbon spheres, all carbon nanomaterials have similar troubles.
Simple mechanical stirring and grinding can only make the hollow carbon agglomerates macroscopically mixed with the matrix powder, and it is powerless to disperse the agglomerates themselves.
Before the hollow carbon sphere is mixed with elemental sulfur by ball milling, it is also dispersed in ethanol by adding a surfactant such as polyurethane, and then mixed with elemental sulfur.
As for the remaining steps, there is no big difference between Luzhou's original lithium battery experiment.
The battery is assembled in a glove box, and then connected to the battery test system, and the performance of these materials in the electrode is confirmed through a large number of charge and discharge tests.
There is no skill at all in these jobs.
In fact, the study of materials science itself is not very skillful.
The main basis of current research and development of new materials is the "scientific intuition" of researchers and a large number of repeated "trial" experiments, using limited conditions to find a feasible method. If you can build a set of theories that can be applied to a limited range on the basis of it again, then it will be considered a powerful Daniel.
Although the mathematical method can reduce the workload of the experiment, the experiment is still essential ...
...
I remember the last time the liver burst, this time last year.
In order to complete the final step in solving Goldbach's conjecture, Lu Zhou locked himself in a world of less than twenty square meters, completely immersed in a digital maze, looking for the final way out.
Compared with the feeling at that time, the feeling now is almost nothing.
This long-lost feeling is really nostalgic.
A week has passed since the first experiment began.
During this time, except for the fact that Lu Zhou did not sleep in the laboratory, the rest of the time was basically in the laboratory.
In addition, Yang Xu, who conducted the experiment at the Jinling Institute of Computing Materials two days ago, made a table of the effects of the specific surface area and pore size of the hollow carbon spheres on the sulfur loading and the mass fraction of polysulfide compounds in the electrolyte. To his mailbox.
In order not to delay the work there, he needs to build a mathematical model based on these data as soon as possible, and then formulate the next experimental plan.
Things seem to be all piled together.
Rubbing his sour brows, Lu Zhou set aside the ballpoint pen in his hand and looked at Connie who was watching the sample.
"What about sample 15?"
With the same dark circles, Connie, who was standing next to the scanning electron microscope, shook his head with a distressed expression. "The last group was also completely scrapped, and almost all the sulfur elements were deposited on the surface of the carbon material. You can come and see It looks spectacular ... "
Lu Zhou sighed softly: "Take the sample to take a picture on the scanning electron microscope, and then dispose of it ... I have seen enough."
It's terrible.
If this is the case, the three groups of samples numbered 14, 14, and 15 are almost completely destroyed.
Regarding such terrible experimental results, Lu Zhou couldn't help even wondering if his theory had gone wrong.
Can hollow carbon nanospheres with specific surface areas in the range of [2326m2g-1, 3762m2g-1] and diameters in the range of [60nm-70nm] really inhibit the diffusion of polysulfide compounds?
However, this was also the last thing he wanted to doubt.
Because after that, he counted many times and got the same result.
If this theory is really problematic, he will have to face a difficult choice.
Pretend not to know, continue to pit the industry with conscience. I am still a disciplined scholar, and take the initiative to correct the mistakes, and honestly and actively contact the editorial department of the Journal of Mizuki University to retract the manuscript ...
In the former case, the feasibility is still very high. Even if it is proven wrong by others in the future, you can use the "honest mistake" to fool the past, and no one will embarrass him. But think of those social resources that are wasted ...
and many more!
Lu Zhou suddenly a spirit, returned to God.
I haven't finished this experiment yet, why do I start to think about the funeral ~ EbookFREE.me ~ Where is this going?
Clenching his fist, Lu Zhou took a deep breath, calmed down, and looked at Connie and asked.
"What about sample 23?"
"Let me see ... the 10% and 30% groups have been finished since 200 rpm, the 20% group ... incredible, it's all 500 revolutions, and they are still struggling."
The word struggling is very interesting.
It seems that his assistant has no hope for this experiment.
However, Lu Zhou looked completely different.
As if grasping the last straw, he restrained his excited tone and asked, "What about the volume change of the anode material?"
Looking in through the transparent part of the battery case for a long time, Connie took a slight poke and came up with an ambiguous answer: "It seems that nothing has changed."
Lu Zhou restrained the impulse to swear: "Don't use visual inspection, take me off with a vernier caliper! I want an accurate answer!"
"I know, I'm just kidding ..." After disassembling the battery, Connie carefully handled the positive material inside and measured its width change with a vernier caliper.
The volume expansion effect of carbon-sulfur composites is very obvious once it occurs, and it can be clearly observed even on a macro scale.
After taking a test, Connie recorded the data in the experiment report, and suddenly hesitated slightly.
Then he tested another group.
Tested another group ...
Lu Zhou frowned slightly looking at Connie, who was still there.
"Failed?"
"No ..." Connie shook his head and swallowed. "It's hard to believe the results ..."
"Measure the chemical composition of the electrolyte immediately!" Standing up from the office chair, Lu Zhou's momentum rose unprecedentedly, "Move fast!"