Today, the Solid State Energy R&D Department of the Titan Star Department and the Mecha R&D Department are holding a joint meeting.
These days, after Gu Qing has been following the aerospace department for a while, he is basically in meetings at other times.
It’s not the kind of old lady’s foot-wrapped meeting where the leader talks about one point first, then two points, and finally sums up for a long time, but a project core meeting that requires full concentration every time for brainstorming.
Among them are confidential meetings on rocket projects where officials are seeking advice, research meetings on projects required for the Moon Starship project, and meetings held by some confidential laboratories that participate remotely...
Once a person stands in certain industries, he will be like the tallest tree in the forest, and he will need to experience and accept more influences than other small trees.
What's more, the team led by Gu Qing is no longer one of the top teams in the industry, but a group of...
In confidential meetings of external units, the team led by Gu Qing almost always had to be bombarded with sugar-coated bullets before they could leave.
But in this kind of internal meeting, it's okay for everyone to advance the project according to the plan.
That’s weird!
Those who participated in the mecha energy project, the senior ones could still keep their composure, but the junior ones were simply overwhelmed and scratching their heads at this time.
"The biggest difference between solid-state batteries and liquid-state batteries is that there is no liquid electrolyte, and we can transition the negative electrode material from the current carbon-based to silicon-based directly to the ultimate solution - lithium metal, because it can greatly improve the performance of the battery. Energy Density.
But lithium metal requires a solid electrolyte whose conductivity needs to be roughly the same as that of a liquid, but which resists the formation of lithium dendrites and does not react chemically with metallic lithium.
The Oak Ridge National Laboratory in the United States, the University of Cambridge in Great Britain, and the Xia Academy of Sciences where I used to work, these Guojia-level research and development forces are all exploring this substance.
Among global technology companies, whether it is Toyota, which makes cars, or CATL, QuantumScape, which are suppliers, they are also tirelessly pursuing this material. "
Digging from Xia Ke Academy, no no, it was an elder from Xia Ke Academy who was amazed by the speed of research and development of Kyushu Technology and impressed by its R&D capabilities. While writing and drawing on the blackboard behind him, he was explaining the difficulties of solid-state batteries.
A triangle on the blackboard.
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Professor Qin pointed to the triangle and said with emotion: "In the research and development route of solid-state batteries, there are actually different degrees of differentiation internationally. This is caused by the different patents and technological advantages held by everyone.
Neon and Goryeo are now making national efforts to promote the sulfide material technology route, while Western European and North American companies and R&D departments are taking the polymer route.
As for us in Daxia, most of us are taking the oxide route.
Of course, this is not absolute, it just means that this is the general direction. In fact, there are many companies doing research on completely different routes from those in China, especially in North America.
They have many companies and many financing channels, so they have enough capital to advance multiple routes. However, in recent years, many companies have declared bankruptcy as the U.S. stock market has experienced circuit breakers, plummets, and abnormal increases.
Due to the outbreak of the financial crisis in recent years, Neon and Koryo have sold off too many patents, so their current research and development progress has stalled. "
The old professor's understanding of the industry is much broader and fairer since businessmen and investors do not pay as much attention to returns and profits.
Of course, he also knew that most of the top people sitting here actually knew something about the industry, and he just wanted to instill this concept into a very small number of managers.
This does not refer to Gu Qing, but to other people who followed Gu Qing to attend the class.
This is also a characteristic of Jiuzhou Technology Company, that is, the executives who will be responsible for the commercialization of the results of this project in the future must start to learn the professional knowledge of this project after passing the identity review.
Gu Qing will never allow his company to have the kind of senior management who only plays with power and draws pictures but does not understand technology.
When Professor Qin was giving a lecture, Gu Qing, like everyone else, was also listening carefully. And some senior executives behind him who don't understand solid-state battery technology are like college students about to take their final exams, or even worse than college students.
College students also have textbooks to highlight key points, but they can only take notes by themselves. They are not even allowed to record or video recording due to meeting requirements. After class, they can only consult professors and engineers when they are free.
“Personally, I actually admire the design ideas of foreign QS companies, which are negative electrode-free designs, solid separators of ceramic materials, and multi-layer stacking.
This is also the reason why QS was able to attract hundreds of millions of dollars of investment from capitals such as Bill Gates and Volkswagen before the U.S. stock market fluctuated violently.
To be precise, QS's design means that during manufacturing, the negative electrode structure of graphite or silicon in traditional batteries is eliminated, and lithium is placed in the positive electrode of the battery.
When the battery is first charged, lithium leaves the positive electrode and diffuses through the solid electrolyte and plate directly to the thin metal layer on the negative current collector, forming a negative electrode. When the battery is discharged, the lithium diffuses back to the positive electrode, leaving the battery with no negative electrode. What goes around comes around.
The prospect of realizing this unique design idea mainly relies on QS's proprietary solid ceramic separator, which replaces the traditional liquid electrolyte and porous separator. It also has good conductivity and can prevent the generation of lithium dendrites.
But after this material was developed, QS faced an unprecedented dilemma because the material could not achieve the thickness required for solid-state batteries.
Compared with traditional carbon and silicon anodes, lithium metal anodes can achieve higher energy density without increasing the size and weight of the battery pack, which also means longer cruising range, while providing high power and long cycle life. and greater security.
But what it must do is that it can be installed commercially and be safe enough. For QS, this is obviously not a problem that can be solved in the short term. "
After Professor Qin sighed, someone among the people sitting raised their hands.
Professor Qin nodded to this one.
He is a young junior student.
"Professor Qin, hello. I am He Xu, an engineer in the mecha research and development department."
The young man was polite at first, but when he got to the point, he seemed very naive.
“As far as I know, among the three major routes of sulfide, oxide and polymer, the ceramic material used by QS belongs to the oxide material system.
The oxide system has many advantages. For example, it has good electrical conductivity and stability, and its ionic conductivity is higher than that of polymers. Its thermal stability can even withstand high temperatures of up to 1,000 degrees, and its mechanical stability and electrochemical stability are also very good.
but--"
