Hand rubbing nuclear fusion live in the wilderness

Chapter 261 Explosive lithium battery

Huaguo's tests on the 'Electromagnetic Rifle' and 'Electromagnetic Sniper Rifle' are still going on, and it is already daylight in the simulated space.

Getting up from the bed, Han Yuan yawned, stretched and walked out of the room.

To be honest, he didn't sleep very well last night.

Because he was worried that the giant python would come over, he slept very lightly, and he was awakened by the slightest movement outside.

Fortunately, nothing unexpected happened.

In fact, if that terrifying giant python wanted to chase after him, the night before yesterday was actually the most dangerous.

But after last night, the next two days will be less worrying.

After all, after a day, the residual smell in the air and soil will almost dissipate, and it is difficult to detect the sensitive sense of smell that animals rely on for tracking.

Moreover, the place of residence is still some distance away from the lake, and it takes about two hours to walk along the river.

Based on the average human walking speed of five kilometers per hour, it is about ten kilometers.

What's more, his walking speed is much faster than ordinary people, and the distance will actually be more or less.

After exercising his body, Han Yuan turned around and came to the farm, killed an alpaca, cooked it and chopped it, added some salt, bone meal, fruit pulp and other materials to make breakfast for the two children.

It's not that there is no more meat in the refrigerator, but fresh and cooked meat with blood is more conducive to Leopard [-] and Leopard [-]'s recovery.

After all, the meat stored in the refrigerator has been bled, and no matter how well preserved it is, it cannot compare to fresh meat in terms of nutrition.

In addition, wild animals have never said that they cannot eat cooked food, only that they cannot make fire by themselves.

In fact, whether it is domesticated animals or wild animals, a large part of carnivorous animals are more interested in cooked food than raw meat.

In addition, whether cats or dogs, the digestibility of the same kind of meat has little to do with raw or cooked.

But it can be said that eating cooked food for a long time will reduce bacterial and parasitic infections, reduce tooth wear, relieve digestive tract pressure, and improve physical fitness and life expectancy.

However, it is not without disadvantages for felines to eat cooked food for a long time, but this disadvantage is relative.

Take jaguars as an example, if they eat cooked food all the time, their animal nature will be reduced a lot.

In the "Animal Domestication Knowledge Information", there are many nutritional supplements formulated for cats, and a large part of the formulation materials are made of flesh and blood that has been cooked to a certain extent.

In addition, after feeding cooked meat for a long time, and then suddenly feeding it raw meat, the jaguar may not be able to suppress the animal nature in its genes, and become crazy when eating, causing harm to the owner.

Felines are similar.

This is also because since the two little ones grew up and could eat raw meat, Won stopped feeding them cooked meat.

One is worried that the smell of blood will irritate the two children, and the other is troublesome.

The two little ones have great appetites, and they don't like to eat simple cooked meat, which is very disgusting.

Normally, you either eat it raw, or you have to cook it according to human standards.
Just like barbecue, Korean won must be sprinkled with salt, chili, cumin and other seasonings for two hours before eating, otherwise it will be gone after a sniff.

Of course, the nutritional supplements and special foods that are specially prepared using the knowledge and information in the mind are excluded.

A nutritious breakfast prepared by Korean won, the leopard one leopard two kept humming, obviously very comfortable and want to have more.

It's a pity that Won simply ignored it.

The live broadcast started, and the audience poured in. After saying hello to the audience who came in, Han Yuan walked towards the dust-free studio.

I was delayed for a day yesterday, and today I will continue to deal with lithium-sulfur batteries.

But obviously, the viewers in the live broadcast room were more interested in the unknown boa constrictor that could hit two children with one blow, and asked for news in the live broadcast room one after another.

[When will lithium batteries be manufactured?how much longer? 】

[Where is the snake?Yesterday the anchor said it was so dangerous, have you been attacked at night? 】

[I want to see the anchor take the electromagnetic rifle to chug the python. 】

[Wait, the battery will probably be ready after the battery is made, and the anchor is probably more anxious than us, after all, his own life is involved. 】

【How powerful is the electromagnetic weapon created? Has anyone copied it?It is sold on a certain treasure, and I will buy it for five thousand. 】

[Let's not talk about [-] upstairs, I want to buy one for [-], an electromagnetic weapon!existence in science fiction. 】

[Do you dislike that a certain treasure has not been rectified?It will be on the shelves in the morning, and the app will probably be gone in the afternoon. 】

Glancing at the barrage, Han Yuan replied, "Just wait."

"In the past two days, speed up the progress to manufacture the lithium-sulfur battery. After it is manufactured, we will go to see what's going on."

"Otherwise I won't sleep well."

After responding, Han Yuan started to prepare the electrolyte.

The previously prepared 'propylene carbonate solution' is only the main part of the lithium-sulfur battery electrolyte.

It also needs to be mixed with electrolyte lithium salt, necessary additives and other materials.

However, compared to the 'propylene carbonate solution', the remaining things are much easier to handle.

It's just that the configuration of the electrolyte lithium salt is not one, but a mixture of materials such as lithium hexafluorophosphate (LiPF6), lithium perchlorate (LiClO4), and lithium tetrafluoroborate (LiBF4).

These different types of electrolyte lithium salts have different roles and effects.

Lithium hexafluorophosphate, for example, has good ionic conductivity and electrochemical stability.

In addition, the lithium hexafluorophosphate electrolyte lithium salt can form a protective film with the current collector, thereby reducing the corrosion of the electrolyte on the current collector.

But relatively speaking, lithium hexafluorophosphate also has disadvantages. Its thermal stability is poor, and it is easy to react with traces of water molecules to produce strong acid phosphorus pentafluoride (PF5).

Phosphorus pentafluoride will have a side reaction with the organic solvent in the electrolyte, resulting in attenuation of battery performance.

Another example is lithium perchlorate.

Lithium perchlorate has the advantages of simple preparation, low cost and good stability.

In addition, this material also has relatively good oxidation stability, which also enables the electrolyte to match some high-voltage cathode materials, thereby exerting the high energy density of lithium batteries.

If you still have an impression of a certain Samsung Explosive mobile phone, you should know that the lithium salt used in the electrolyte in the battery of that mobile phone is lithium perchlorate.

The reason for its explosion is simple.

Chloride ions in lithium perchlorate are in the highest valence state +7.

Therefore, chlorine perchlorate is very easy to undergo redox reaction with the organic solvent in the electrolyte.

As a result, safety problems such as lithium battery combustion and explosion are caused.

So being greedy for cheap is out of the question.

As for other electrolyte lithium salts, they more or less have their own advantages and disadvantages.

However, some specific electrolyte lithium salts are mixed and matched, mixed with a stabilizing additive, and combined with the artificially manufactured SEI film, which can effectively stabilize its performance, weaken its shortcomings, and then improve conductivity and stability.

It is impossible for South Korean won to cheat itself like a certain Samsung.

After all, these lithium-sulfur batteries are to be installed on the aircraft in the end, and it will be cool if something goes wrong on the aircraft.

Once so many batteries catch fire and explode, the whole body may not be able to be saved.

(End of this chapter)