On the fifth floor of the Qianghua Experimental Building, Li Jian sat in his own separate room, looking at the nickel-cadmium battery opened in front of him, which is already the best cheap battery that can be purchased at present.

Next to the nickel-cadmium battery with nickel and cadmium as electrodes, there is a nickel-metal hydride type with a higher price, and the price has far exceeded the scope of nickel-cadmium, and at the same time, there is no pollution hazard of nickel-cadmium batteries.

Different from the nickel-cadmium battery with polyamide non-woven fabric and potassium hydroxide aqueous solution as the electrolyte, the electrode of the nickel-metal hydride battery is replaced by cadmium to hydrogen storage metal, which is different according to the battery manufacturer, and the technical level of the technology used is also different.

NiMH batteries are small in size, but they weigh more than twice as much as NiCd batteries at 1.2 volts at the same voltage.

Therefore, if you want to use it on PHS, the weight issue has to be considered.

At the same time, nickel-cadmium batteries can only be charged and discharged about 500 times, and there is a memory effect, a single discharge does not reach 30%, and there will be 70% of the power invalidated, which is a big flaw.

Next to these two small batteries is a lead-acid battery for cars, which is about the size of a basin, and is a 12-volt battery composed of six small batteries connected in series.

Without any research, just looking at the shape can be allocated this lead-acid battery from the ranks of applications, such a large volume, even if only one of the six small pieces is used. It is enough for an adult to be tired enough to choke, and with this kind of mobile phone, it is not as convenient as walking to a public phone booth to make a call.

At the beginning, Bell researched the reason why mobile phones were not widely available. Isn't it because the volume is too huge, beyond the psychological expectation of human portability, and traveling with a mobile phone the size of a schoolbag is no longer convenient but cumbersome.

Next to the lead-acid battery, there is a coin-sized button battery, which is actually a lithium battery and is small in size. The discharge voltage is high and widely used, but the disadvantage is that the battery capacity is small and cannot be charged. One-time consumption is too expensive.

Another kind of lithium battery is the strip battery commonly used in toys, and the button battery must have a large capacity, but the lithium metal is unstable and prone to potential safety hazards. This is also something that must be paid attention to in use. From the safety aspect, lithium batteries have been naturally excluded.

Ordinary dry batteries, Li Jian didn't even look at them, not to mention the price, the environmental pollution caused by the disposal of ordinary dry batteries alone is destined to minimize the use of dry batteries.

Lithium-ion batteries are what you want, but there is no commercial lithium-ion battery technology yet. If memory serves, the world's first commercially available lithium-ion rechargeable battery. It should have been launched in 91 by the Niso company, which he had cheated twice and the other party had not yet noticed.

Launched in 91, it should still be in the research and development stage, or is it just that there are corresponding technical reserves, and there is no progress yet?

I can only take the lead again and start the manufacture of lithium-ion batteries.

Different from lithium batteries, lithium batteries are made of lithium metal that can react quickly with graphite under the condition of discharge, while lithium-ion batteries are made of lithium-ion embedded compounds as the positive electrode material and carbon as the anode material, and the capacity of the same volume is twice that of other batteries, which is not toxic, as long as it is manufactured, it is the first choice for life batteries.

The cathode of lithium battery, the lithium-ion compound used, Li Jian is well-known is lithium cobalt oxide, which is also a commonly used lithium battery raw material for mobile phones and notebooks.

But now, lithium cobalt oxide batteries have not yet appeared, and Li Jian must make lithium cobalt oxide batteries by himself.

"Let's prepare the samples first, and then think about mass production, but fortunately, I have my own chemical plant, and I can produce polyvinyl alcohol and other things by myself, and I can save a lot of money."

After meeting with Lin Kaihe, who rushed back from Zhenshen, Li Jian asked Lin Kaihe to arrange for people to purchase some materials for lithium batteries, first of all, lithium salts, cobalt salts, these raw materials cannot be bought by ordinary people.

As for the high-temperature calcination after dissolution, because many majors in the Qianghua Laboratory Building itself have high-temperature containers, there is no need to prepare them specially, for example, Jiang Sicheng's optical fiber group has high-temperature calcination containers.

The grinding after calcination can be hammered with a hammer at the beginning, and then sifted, and the finished product rate is lower at the beginning, but it will not cause waste.

"Dong Li, what are you buying these two things for? If the dosage is not large, it is good to find a way, if the dosage is large, you can only wait for a period of time, these two things are not commercial, only we can use it occasionally for people who do research, and there is no reserve at all in general places, but if you use a large amount, we can contact the smelter and buy some should not be a big problem, but it is certainly not the lithium carbonate and cobalt tetroxide you want, we can only prepare it ourselves. ”

Lin Kaihe has also studied metal materials, and he knows about lithium metal and cobalt metal, so Li Jianyi said that he knows the market prospects of these two things.

When publicizing to the outside world, I often hear the words that our country is rich in natural resources.

It's just that our country's land is vast and abundant, the land area is not small, and the products are not abundant, but there are some key things that our country is not rich.

From the black blood oil of energy, to the iron ore, which is necessary for the rise of modernization, including some metal deposits such as lithium ore and cobalt ore, our country can only use one word, but the reserves are not much.

In particular, metal deposits such as iron ore, even if one deposit is found occasionally, are poor ores with very low grades.

"Go to the north and south of Xinjiang to find a smelting company, they should have cobalt ore and hungry lithium mine, no matter what form of storage, buy it at a reasonable price, buy a part of it first, it is better to import this thing from abroad, after all, it is a consumable resource, and it will be gone if it is used, we have to leave a little reserve for our children."

Li Jian sighed, in his memory. Some of our country's mineral deposits, in exchange for dollars, carry the blood of countless husbands on them, and these less and less wealth disappears. There will be no treasure left for future generations to exchange for wealth.

Hearing Li Jian's sigh, Lin Kaihe thought that Li Jian was worried about not being able to buy raw materials, but he didn't hear Li Jian's sigh The final focus is on future generations, and the eyes of this era have not been considered so long for the time being.

"Dong Li, do you still need to worry about this, you look for Commander Xu Hanqiang. ...... in the name of munitions"

Lin Kaihe didn't continue, his meaning was very clear, and Li Jian also understood. Now that all raw materials are planned, only military supplies can be massively disposed of, and they go from the aspect of military consumption. Everything will be much easier. Of course, there must be a lot of darkness mixed in with it.

Presumably, which old man has a million-dollar disarmament and military ban on doing business, he has also thought it through, but he will never take this kind of road that harms the public and private interests, since he has foreign exchange and dollars in his hand, then buy it from a foreigner.

Remember that the three major mines of B&Bitto, Lito and Brazil's Freshwater Valley took advantage of the increase in domestic demand for iron ore to raise the price of iron ore, although this is a commercial activity. But Li Jian still didn't feel good in his heart.

"No, I'll buy it from Australia or Brazil. They have high grade mines, and we can save some costs. ”

Li Jian had no intention of explaining his plans to Lin Kaihe, they were still standing in the ideological confinement of foreign exchange first, and using foreign exchange to buy things was a luxury for ordinary Chinese people.

Sure enough, Lin Kai closed his mouth and muttered,

"The foreign exchange ...... that I finally earned" walked out, in Li Jian's eyes, it was quite similar to Zhang Zhihua of Jiangzhou City, but he was the secretary of the municipal party committee, and you were an engineer, so you shouldn't worry about it at all.

Tang Yang is still in China at this time, and the foreign business has been handed over to a few of his big-nosed subordinates, Li Jian has no manpower to call abroad, and the only people he knows are still engaged in computers, looking for Tang Yang, I'm afraid he can't help himself to contact, after all, the mining company still has a selfish heart for domestic enterprises, especially Tang Yang's true identity, it is definitely not suitable to do this.

"By the way, you can find him."

Li Jian saw the newspapers that were used as pads under the battery, and instantly thought that in addition to being engaged in computers abroad, he really knew a few people who were engaged in other industries, and the editor-in-chief of Time Magazine was called Talfuller, and he still had a relationship with himself.

In particular, they are not bulk purchases, even if they set a lithium-ion battery production line and produce ethylene in their own chemical plants, the demand for minerals is dozens of tons or hundreds of tons a year, depending on what kind of mineral deposits they have, and this order of magnitude of sales is simply a drizzle for these three giant mines.

I made an ocean call to where Tafuller was, and it happened that the editor-in-chief was in the office, but after hearing the names of the three major mines that Li Jian said, this little old man who was a bit aristocratic didn't speak for a long time.

"Mr. Li Jian, I think, you are not mistaken, among the top three mining companies in the world, there is no company called Bihebito, the top three are Tamsui Valley, BHP, and Bi Liden, of course, Lito is also very strong."

"Oh, I want to say BHP, have you dealt with these companies, my company wants to carry out some smelting business, it probably needs dozens of tons, oh don't laugh, it's a little little, but I need help, you know I haven't been in the smelting business before."

Li Jian also smiled, and Tafuller laughed when he heard dozens of tons, because the business volume of these mines is tens of millions of tons.

"Well, what mine, you say, I think I can actually introduce you to a small mining company, they just advertised in our newspaper."

Tyfuller suggested, and Li Jian responded,

"Yes, but first you have to ask them if they have cobalt ore and lithium ore."

"Wait for me to call, I'll help you ask, these dosages, there is no need to talk to BHP about them, their interest in you is probably not as good as the bikini girls on the Hawaiian beach."

Li Jian and Tafuller hung up the phone, spread white paper on the desktop, and began the preparation process of reducing lithium cobalt oxide. (To be continued......)