Chapter 830: Actually some research? (4K)
“But the shortcomings of oxides are also very obvious. Compared with sulfides, the conductivity of oxides is still too low. This leads to the performance of solid-state batteries using oxide system materials. The release is completely unable to meet the needs of our mecha project
And a series of problems such as capacity and magnification performance are simply not possible due to the limitations of the material properties. Solved.
In addition, there is an unavoidable technical problem, that is, the materials in the oxide system are very hard, which leads to the problem of 'solid contact' in solid-state batteries that cannot be properly solved. < br>
This is a flaw that cannot be ignored for combat equipment such as mechas and small aircraft that require high maneuverability and stability. ”
What does it mean that a newborn calf is not afraid of tigers?
This is it.
As a new engineer in the mecha research and development department, He Xu has almost no qualifications in front of Professor Qin in terms of qualifications.
But he dared to directly refute the professor’s research route.
And he is not without aim. The solid-state battery industry does seem to be booming, and there seems to be new discoveries every day. However, due to material issues, there is really no one that is both safe and can guarantee high power. Storage materials for outputting energy appear.
As for the "solid contact" problem of oxide solid-state batteries raised by He Xu, it is indeed a long-standing problem in the industry.
Oxide particles exist in point contact. Under simple room temperature cold pressing, an all-solid-state battery made of oxide will be a battery with very high porosity.
In a liquid battery, all pores are wetted by the electrolyte, so there is no problem with interface contact, but in a solid-state battery, these pores cannot conduct lithium.
These core issues lead to the strongest form of solid-state batteries, all-solid-state batteries cannot be dominated by oxide materials.
Professor Qin was not angry at this newborn calf. He first nodded and admitted that the problems raised by He Xu could not be properly solved, and then said: "The current scientific research frontiers at home and abroad are actually still in the past. In the direction of solid-liquid mixing, it is necessary to use both the solid electrolyte layer of the oxide and the electrolyte to infiltrate it, so that the pores can be filled and it will have a complete lithium conduction channel
And if we follow this route, we can upgrade the factory and manufacture it in a short period of time after we have commercial or practical results.
There are some things that you don’t know much about when you are young. Here I can reveal to you a reason for taking this route, that is, our four domestic leading solid-state battery companies Yanjing Weilan, Suzhou Qingtao, Ningbo Feng Lithium and Ryukyu Province Huineng are currently taking the route of solid-liquid mixing technology based on oxide materials.
We, Jiuzhou Technology, have made brilliant achievements in using semiconductor technology to lead the collective upgrading of the semiconductor industry in Daxia. Once our solid-state battery technology can be commercialized on a large scale and is reliable enough, it will definitely set off a revolution in a short time. The reform wave of the energy storage industry in Daxia! ”
Professor Qin, who has already completed his 19th year, looked excited when he said this.
Faced with devoting his entire life to the industry, I hope Daxia can A veteran of scientific research who has reached the peak of the energy storage industry, He Xu also has his own persistence.
He argued rationally: "But the current problem is that we must complete a real solid-state battery in a short time! The mecha project cannot wait, the starship project cannot wait, and there are many other projects that cannot wait!
< br>I know that the team you led brought a lot of patents with them when they entered the company, but we can’t just sit on our laurels and look forward!”
Actually, He Xu said this for some reasons! .
In the eyes of the older generation of scientific researchers, the mecha project is just a toy project.
Let these big guys devote their energy to the energy storage equipment of the mecha project? That's the equivalent of asking a top engineer to design a toy car for a kindergarten kid.
Just give me a face and let you use the patent.
The progress of solid-state batteries has accelerated recently, and that is because aerospace, a super-large project, has many requirements.
But this is one of the conflicts of ideas between young people and the older generation.
Lao Shoucheng is more willing to spend time on strategy and overall planning. This has a high success rate, but requires patience.
And young people are like the scorching sun, the rising sun in the morning. They know that they need to go to the scorching sun at noon. They are not willing to wait too long, even if they know that waiting is right. .
But most people really don't want to wait that long, and as time goes on, more unplanned changes are prone to occur.
For example, the mysterious deaths of a number of energy executives like Mao Xiong in recent years, and the increasingly turbulent international situation.
More and more engineers and scientists are becoming anxious. They want to advance the project in hand as quickly as possible, and then move on to the next one, and then the next one. They will not put down their anxious hands until it is completely safe.
As for how to realize a pure solid-state battery, Gu Qing, who is sitting below, actually has a rough blueprint in mind.
It’s just that he can’t just be a pioneer in this kind of thing. It’s better to need an opportunity to come up with ideas, then correct the direction of this big project, and then scientifically divide it into small ones. After the project, these engineers and scientists were put into the positions they should be put into, one by one, and all aspects were taken into consideration.
And I can sit quietly in the back among the patent signatories and big project reports, and watch with the satisfaction of an "old father" on my kids as they dazzle the world.
After briefly looking at the recent R&D logs of Professor Qin and He Xu, Gu Qing stood up.
At this time, the solemn atmosphere in the conference room also changed because of Gu's actions.
Everyone, without exception, focused their attention on him.
As soon as he got up, Gu Qing felt so many eyes on him, but he was not timid. He said to the two people who were arguing: "You two, don't argue in useless places. Every technical discussion about energy and promotion are both useful, and the company attaches equal importance to energy projects and mecha projects
Modern industry cannot do without energy, and the mecha project is not just for entertainment and special operations needs. "
Professor Qin and engineer He Xu briefly paused for two seconds after their eyes met. Then they looked at Gu Qing in unison and nodded.
What Mr. Gu said is true. It makes sense. After the two of them calmed down a little, Gu Qingcai He walked out and said to everyone: "The mass production of safe all-solid-state batteries has always faced many difficulties, but the semi-solid batteries mentioned by Professor Qin are compatible with existing liquid battery process equipment and materials, and can be produced at a lower cost. Mass production is the basic condition to meet market applications.
After more than ten years of rapid development, our colleagues in Daxia have significantly reduced the cost of liquid lithium-ion batteries, while the energy density continues to increase. Now the solid-state batteries produced by Daxia companies Batteries have become the mainstream product in the global automotive power battery market.
But at the same time, new energy vehicles and equipment equipped with liquid lithium-ion batteries have become more prone to fire and explosion accidents in recent years.
Our engineer once told me that the explosive power of a 18650 model lithium battery is no less than that of a small grenade, and the reason why it does not cause as much damage as a small grenade is simply because it has Restrained by a steel shell.
The two biggest reasons why we develop solid-state batteries are that they are very safe, and their energy storage and discharge performance can be of the highest quality. I have read the recent reports on several of our projects, and it can be clearly seen The current research and development situation is still some distance away from these two goals.
And even if they are not commercial products, just laboratory products, they are not the kind that can be mass-produced by developing a comprehensive product. ”
Gu Qing said this to all the people in charge of the solid-state battery project.
Although his tone was somewhat harsh, no one dared to speak against him.
In recent years, Jiuzhou Technology has produced solid-state batteries, but to be precise, they are solid-liquid hybrid products, and the manufacturing cost is much higher than those of major manufacturers manufacturing batteries with the same performance, so it is just Pseudo mass production.
Many members and teams of the solid-state battery project team in the energy storage department relied on the exaggerated resource investment and R&D equipment within Jiuzhou Technology to produce some data under ideal conditions in the laboratory, which looked pretty good. products.
However, without exception, those products are not feasible for commercial and special use. They are "flowers in the greenhouse" and cannot be taken out for viewing at all.
Gu Qing walked onto the podium, and Professor Qin naturally gave up his position as the lecturer.
Clicking on the temples of the glasses, using the projection of the SR1 glasses, and using the void gesture to drag the file to the blackboard behind him, Gu formally faced the crowd and spoke about his thoughts.
“I think solid-liquid hybrid is not a transitional technology for these companies. It can even be said that it is indeed a type of solid-state battery, but it is for those who cannot get through all-solid-state batteries. For technology companies.
I personally understand the thinking of these companies. After all, liquid lithium batteries have gone through decades of research and development and production before they finally formed the cathode material composed of ternary/lithium iron phosphate. system, the anode is iterating to silicon-based ones.
But in terms of the theories proposed in the first generation of these products, these companies have still stayed on the same track after decades of research and development, and have not surpassed the first generation theory.
The current energy density of liquid lithium-ion batteries has reached 300Wh/kg, which is almost reaching a theoretical limit. The next step or next generation of batteries must be to develop solid-state batteries
When a research laboratory of our Jiuzhou Technology Titanium Star Department was developing some equipment and materials for carbon-based semiconductors a few years ago, there was a material that might allow all-solid-state batteries to completely replace the electrolyte and separator while allowing positive and negative Extremely active materials will also maintain the original material system. "
As soon as Gu Qing said these words, many people who were still sitting immediately stood up.
Even Professor Qin, who had just walked down and sat down, now Shi Ye stood up and looked at him energetically.
Among the people present were the old man from Xia Ke Academy and the elder. The master of Xia Gaoneng Research Institute and a group of doctors who are no less inferior to foreign elites in scientific research
At this time, they all held their breath and stared at Gu Qing's mouth, trying to use it. His eyes pried out from Gu Qing's mouth what they had been pursuing for years and decades
Anhetang, who had just returned to work for a day, was already familiar with this scene, but still subconsciously became nervous.
Because the looks in the eyes of these scientific madmen made him a little scared.
Gu Qing did not give in. He clicked on the file and decrypted the file only after the SR1 glasses verified the scleral password.
“This document is quite large, including not only the analysis of solid-state batteries, but also speculation and preliminary research on projects in the battery field such as fuel cells and power batteries.”
【Used load Polyaniline-graphene-wrapped polyester fibers as flexible electrodes and bacterial cellulose (BC) nanofiber-reinforced polyacrylamide as hydrogel electrolytes were used to design high-performance ASCs. It combines a textile electrode capable of arbitrary deformation with a BC-reinforced hydrogel with high ionic conductivity (125mScm-1), high tensile strength (330kPa) and superelasticity (stretchability up to ≈1300%), Producing devices with high stability/compatibility between electrodes and electrolytes, perhaps relying on the efficient design of energy storage devices that are robust enough, solid-state batteries show great potential in truly wearable application environments! 】
[The negative electrode material of solid-state batteries may be a mixed negative electrode of nano-silicon and graphite, and the positive electrode may be lithium manganate, a lithium-rich manganese-based material, or a lithium-free positive electrode material. Then the electrolyte is a solid electrolyte, and its energy density can be 300-450Wh/kg. Then the next generation will be lithium-sulfur batteries or lithium-air batteries in the future.
[For example, when developing high-energy-density all-solid-state or solid-liquid hybrid batteries, the positive electrode material is still high-nickel ternary, the negative electrode material is still graphite or silicon carbon, etc., and copper-platinum and aluminum-platinum are still used in the positive and negative stages. , the roll-to-roll process and the battery assembly process will still not change much. 】
【Through rare earth ion doping and rare earth ion coating of electrode materials, the structure of the electrode material is stabilized, the electronic conductivity and ion diffusion of the electrode material are improved, and the electrochemical performance of the electrode material can be effectively improved. The electronegativity and ion size of rare earth ions are key factors in regulating the performance of electrode materials for lithium-ion batteries and supercapacitors. 】
……
“That’s right! If you make a multi-layered honeycomb three-dimensional complex porous structure. Using these voids as deposition spaces for metallic lithium, you can use a scaffold with excellent strength. Graphene material to ensure that the negative electrode material is not crushed during assembly.”
"Old Li, you think it's too superficial. This honeycomb-like three-dimensional porous structure can effectively solve the problem of spatial changes in metallic lithium batteries during charge and discharge cycles, while preventing separation and disconnection between different material layers of the negative electrode."< br>
“Yes, yes, the excellent structure can give full play to the characteristics of the material, and at the same time, it can also allow the material to have a better environment, yes, yes. And there is more than one structural conjecture? They actually thought of this structure? "Slow down!"
"Stop it!"
" It's almost done, I think it's okay! Just wait a moment!"
"Just turn the page forward!"
A group of people seemed to have been starving and thirsty in the desert for several days, and even the refugees who quenched their thirst with urine suddenly saw a Manchu banquet and a pile of iced watermelon fruits and cold drinks. Their eyes were no longer green, but The greedy desire for endless longing.
Even those old men who had been sitting in Xia Ke Academy for many years watching the industry turmoil almost simultaneously took out the old notebooks in their pockets, scribbling down the information and taking notes.
PS: There are more than a hundred words for formulas and numerical values, but only a few dozen words of valid figures--
(End of this chapter)