Chapter 774 Singer’s uneasiness
NiMH batteries? Why have I never heard of this kind of battery before? Comrades from the Chemical Department were very confused.
"General Engineer Gao, I have never heard of this kind of battery, and I have no idea about the situation at all."
Gao Zhendong smiled and shook his head: "It's okay if you haven't heard of it. I just developed this kind of battery."
The origin of nickel-metal hydride batteries is generally recognized as originating in the 1970s, and it took more than ten years for commercialization to become fully mature.
But before that, although there were no civilian and commercial ones, they were used in special industries, such as aerospace, but the nickel-metal hydride batteries they used were special. They were high-voltage nickel-metal hydride, which had advantages and disadvantages over low-voltage nickel-metal hydride. But the biggest advantage is the large capacity!
If the capacity of low-voltage nickel-metal hydride is about 1.5 times that of nickel-cadmium batteries, then the capacity of high-voltage nickel-metal hydride is 5 times that of nickel-cadmium batteries!
It’s just that the high voltage of high-voltage nickel metal hydride does not mean that the voltage is high voltage, but that the way to store hydrogen is high-pressure hydrogen storage. High-pressure containers must be used to compress and store hydrogen. The pressure is high, sealing is difficult, the cost is high, and the danger is high.
So in the end it was only used in aerospace, so the aerospace industry didn't feel bad about using it.
Even counting high-voltage nickel-metal hydride batteries, nickel-metal hydride batteries only began to appear in the world in the mid-to-late 1970s. Therefore, when Gao Zhendong said that he "made it himself" at this time, there was no psychological burden at all.
There is no way, this guy can't help but pretend, after all, this thing really doesn't exist now, it doesn't exist in the whole world.
Listening to Gao Zhendong's words that making new batteries is as easy as eating and drinking, the comrades in the Chemical Department suddenly felt that they were not suitable for making batteries? Why does it feel like it is very easy for others to do it, but my group is helpless.
Gao Zhendong didn't care what they were thinking. He first introduced the principle of nickel-metal hydride batteries. As for where this principle came from, don't ask, I just dreamed of it.
Simply put, a nickel-metal hydride battery uses nickel hydroxide as the positive electrode, potassium hydroxide solution as the electrolyte, and the negative electrode is a hydrogen electrode.
It sounds very simple, but the secret lies in what kind of hydrogen electrode the negative electrode is.
The comrades in the Chemical Department were not fools either. They quickly understood the basics of nickel-metal hydride batteries and quickly asked the first question.
"General Engineer Gao, so to speak, this kind of battery will involve a large amount of hydrogen during the charging and discharging process. This will cause a lot of trouble, right?"
Everyone knows very well how troublesome hydrogen is. This thing cannot be contained! It will always leak because the hydrogen molecules are too small! Being able to slip out of the molecular gaps of almost any container is just a matter of speed.
And because of its low density and small molar mass, if you want to collect a sufficient amount of hydrogen, its volume is very large, or you have to use very high pressure to store it. In short, it is not an easy thing to deal with.
I have to say that they are still very sensitive. For example, nickel-metal hydride batteries used in space. One of the flaws is that during the charging and discharging process, the pressure generated is as high as 3~5MPa. Although this pressure is not too exaggerated, it is in daily use. It's still a bit high.
Gao Zhendong shook his head: "If it is for non-space use, we can use another thing."
What else is good? Comrades from the Chemical Department were very curious.
"We use hydrogen storage alloy!"
"Hydrogen storage alloy?" This thing completely subverted the comrades' cognition. If nickel-metal hydride batteries seem to be feasible after hearing the name, then hydrogen storage alloy will directly defeat them.
Hydrogen storage alloys only began to appear in 1967. The first hydrogen storage alloy, or metal compound, was Mg2Cu. At this time, people who are engaged in related research abroad may have some impressions, but domestic comrades undoubtedly do not have any experience or consideration in this area, so Gao Zhendong's words immediately overloaded their heads.
"Can alloys store hydrogen?"
“Never heard of it.”
"If it is really a metal that can store hydrogen, it would be easy to handle. No high-pressure container is needed. The hydrogen generated during the charging and discharging process is directly absorbed by the hydrogen storage alloy."
"Alloy, Chief Engineer Gao is from the 17th Machinery Department, and working with alloy materials is indeed his forte."
At this time, the comrades remembered that Gao Zhendong was a member of the 17th Machinery Department, and alloy materials were indeed his specialty in theory. This explains why he is so familiar with batteries. One of the electrodes of this battery is made of alloy material, which makes perfect sense! ! !
But in their view, Gao Zhendong invented a brand-new material, and also brought a brand-new effect - the metal hydrogen storage effect, but it was just for the birth of a new battery. How can I put it? luxury.
For the sake of nickel-metal hydride batteries and hydrogen storage alloy dumplings, there is really no one left.
"General Engineer Gao, why can this kind of nickel-metal hydride battery using hydrogen storage alloy be used only in non-space applications?" some comrades asked.
"It's not that it can't be used in space exploration at all. It mainly uses hydrogen storage alloy batteries. I have tested it. In this case, the energy density of nickel-metal hydride batteries is about 1.5 times that of current cadmium-nickel batteries, which is not very high. "It's not worth it." Gao Zhendong said at the beginning that he had a physical battery, and this physical battery used hydrogen storage metal.
These batteries came from that little black book.
However, although the energy density of this battery is not too high, it is not completely useless.
"But this kind of battery is more suitable for the other demand you mentioned - individual radio stations. It has good safety, charge and discharge performance, energy density, cycle life, etc." Gao Zhendong said while Call the people at the No. 3 factory office and ask them to bring over some batteries from their laboratory.
This batch of batteries was specially taken out and put in the laboratory when he heard that some comrades were coming to discuss the matter of batteries. Anyway, there were a lot of weird things in his own laboratory. It didn't matter if there were more or less, others would do the same. Can't tell at all.
"This batch of batteries is given to you. You can test it. If there is no problem, our factory will produce the most important hydrogen storage alloy anode and provide it to you."
The comrades were very satisfied with this result. As for asking Gao Zhendong to hand over the proportion and production process of the hydrogen storage alloy anode to them, to be honest, they themselves had never considered it at all.
Where does he come from with such a big face? If he can be useful, he already has the support of comrades.
"General Engineer Gao, you just mentioned non-space batteries that use this kind of hydrogen storage alloy. Do you mean that it is better to use high-pressure hydrogen storage solutions for space batteries?"
one comrade asked.
Gao Zhendong nodded: "Yes, the other advantages of this high-voltage hydrogen storage solution are probably similar to those of the nickel-metal hydride batteries you have, but there is only one issue - energy density, which is enough to make people put it down, especially Under the premise that its service life and memory effect are relatively ideal. "If I have to say that the solution of high-pressure hydrogen storage is actually put into use earlier than the hydrogen storage metal, because the hydrogen storage metal has not been perfected in the early stage. Of course, Now in the hands of Gao Zhendong, this matter is completely reversed.
The nickel-metal hydride battery samples and nickel-metal hydride battery technology in his hands are all based on civilian nickel-metal hydride batteries in the 1980s and 1990s, which are typical low-voltage nickel-metal hydride batteries.
But fortunately, he had saved a lot of content on high-voltage nickel metal hydride. The reason was the same as the reason why he saved a lot of information on solar panels. It was all forced by his instructor, who was engaged in telemetry and various power supplies. All must be familiar with each other.
"If the energy density of high-voltage nickel metal hydride is as you said, it is indeed worthy of consideration." Higher energy density means lighter and smaller size and weight, which is definitely something worth considering for space applications. .
Gao Zhendong nodded: "In fact, the biggest disadvantage of high-pressure nickel metal hydride is not that it requires a pressure vessel."
"Mr. Gao, what is that?"
"The biggest problem is that it's expensive, not ordinary ones, so except for space projects, ordinary ones are really unaffordable." Gao Zhendong said with a smile.
"Well, a 3~5MPa pressure vessel is indeed not cheap." The comrade from the Department of Chemical Industry was convinced, but he still underestimated the outrageousness of this thing.
"No, no, no, the reason why this thing is expensive is far more than just that. Its electrodes are also expensive, and its hydrogen electrode is not cheap either." Gao Zhendong said with a smile.
The hydrogen electrode of this thing is composed of activated carbon, polytetrafluoroethylene, platinum-containing catalyst and other components. Needless to say, the platinum-containing catalyst is enough to make people realize why it is expensive. In Gao Zhendong's previous life, the most valuable thing in a scrapped vehicle was none other than the three-way catalytic converter. It's the same principle.
Gao Zhendong explained the method of making hydrogen electrodes to the comrades in the Chemical Department, and then the comrades in the Chemical Department realized how troublesome this thing was. No wonder Chief Engineer Gao himself only experimented with low-voltage nickel-metal hydride batteries and high-voltage ones. Before he even touched it, his group came to the door.
6◇9◇Book◇Bar
"Although this thing is difficult to make and expensive, it is really good to use in space batteries. The conditions here are also limited, so I didn't have time to test it. I leave the implementation of this thing to you."
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Gao Zhendong found a reason to explain why he did not engage in high-voltage nickel metal hydride.
For the comrades of the Chemical Department, this matter is completely pie-in-the-sky. Although they cannot become the main force in these achievements, they are lucky enough to participate, not to mention that there is a new bias in it. Theoretical stuff - hydrogen storage alloy.
Their admiration for Gao Zhendong came from the bottom of their hearts. He was able to find two different application methods for the same nickel-metal hydride charging and discharging principle. This was not something everyone had the ability to do. Most people would be happy to find this principle.
They returned to their unit happily with a batch of low-voltage nickel-metal hydride battery samples, as well as high-voltage and low-voltage nickel-metal hydride battery materials harvested from Gao Zhendong.
Not long after, the National Defense Work Committee received their application for research on new batteries. The leader of the application was Gao Zhendong.
Although Gao Zhendong did not participate in their subsequent work, for the comrades working on batteries in the Ministry of Chemical Industry, Gao Zhendong undoubtedly played the greatest role.
The chief engineer of the National Defense Work Committee smiled as he signed the declaration form. This matter is settled! ——
In the southern part of the snow-covered plateau, an upper-level person from Zang San was discussing something with his staff.
"We must get ownership of this plateau and garrison troops in their Shu province!"
To be honest, we have never been able to figure out the inexplicable confidence and outrageous ideas of Zong San and his gang.
"Will the Orientals agree? Don't forget, they just fought against the Seventeen-Nation Alliance led by Citigroup, and their performance was amazing."
"Ali, you have completely forgotten, that is because their opponent is not us. If their opponent is us, the situation will be completely different."
What is the highest level of bragging? He was so bragging that he believed it.
"But in terms of public opinion..."
"Don't worry about this. We are the leader of the Non-Aligned Movement. We have a very good relationship with Lao Maozi. Lao Maozi also hopes that we can suppress the development of the Orientals. Citigroup also extended an olive branch to us..."
It can only be said that as long as we exist, the international political environment of Zongsan will be the best. Even at the beginning of the Cold War, it can still get the upper hand between the Citigroup and the old Maozi, and enjoy the benefits of both sides.
But Ali was not as optimistic as this man.
"Mr. Singh, I think you need to pay attention to one thing. They have already started building an airport at this location."
After speaking, Ali took out a document bag and handed it to Mr. Singh.
"This is a photo taken by Lao Maozi's latest Zenit-2 satellite, which was given to us by Lao Maozi. There are signs that the Orientals have begun to build an airport at this location. Although the overall scale is not large, the runway specifications are relatively High.”
Since 1961, Lao Maozi has been sending returnable photographic reconnaissance satellites to the sky one after another. The place where we meet Zangsan is naturally his focus.
While watching, Singh joked with Ali: "Aha, judging from the location of this airport construction, this airport is built for you..."
But before he could finish the joke, he realized the seriousness of the problem.
——This airport is too close to their capital, New Delhi!
It is only over 500 kilometers from the airport to New Delhi.
This means that it only takes 40 minutes to fly from this airport to drop bombs on the heads of the people of New Delhi.
At this time, Singh couldn't help but complain about the idiots who set the capital in New Delhi. Didn't they think about how close this place was to the Orientals?
And the seriousness of the matter is not just a matter of being too close, but the fact that the Orientals just blew up a big one recently!
Thinking of this, Singer felt a little uneasy. Although they announced that they would not use it first, who knew about this kind of thing?
(End of chapter)