In the current era when smartphones and other electronic products have highly occupied the market, fast charging technology has long been applied to mobile phones.

There have been mobile phone manufacturers who have launched products that 'charge for five minutes and talk for a few hours', but in the final analysis, it is actually due to the improvement of the charging power of the charger and battery on the premise of ensuring safety.

After Jiang Bo finished reading the summary part in the details of [Second Charging Technology], he had a certain understanding of this.

Although it is not as noble as wireless charging, it is indeed a good technology, but in the current situation, it is more difficult to achieve than wireless charging.

Take a 5000mAh battery as an example, the discharge voltage is about 5V, from which the energy of the battery can be calculated to be 25000 milliwatt hours, which is 25wh.

Whereas, usually, one kilowatt-hour of electricity is 1000wh.

In other words, a mobile phone with a battery of 5000 mAh needs to be charged at least 40 times repeatedly to consume one kilowatt-hour of electricity, which shows that one kilowatt-hour of electricity may not seem like much, but it is definitely a lot.

According to the situation described in the [second charging technology] data, the total energy of a 25Wh battery is equivalent to 90,000 WS, that is, 90,000 joules.

To fully charge the battery in 10 seconds, it means that both the charger and the battery need to reach 9kW of power. In daily life, a charger that does not even have the volume of half a fist can have a power of 9kw?

That, of course, is impossible.

Convert it a little more, if it is charged within the specified voltage, it is 220V voltage for household use.

At this time, the average current intensity will reach 40.9A.

In a relatively short period of time, life-threatening currents are very small, such as 100mA of direct current passing through the human body for a few seconds, which is enough to kill a person, and alternating current is even smaller.

Therefore, under normal circumstances, it is not allowed to exist in daily necessities with such a high current intensity.

Of course, it's not right to choke on food, and you can't stop touching something just because it's dangerous.

For example, improper driving is easy to kill, and the official does not say that driving is prohibited, and for example, the ultraviolet rays in the sun can cause skin cancer after being exposed to the sun for a long time, but no one says that it is not allowed to bask in the sun, and the knife in the kitchen is not used properly, it will cut off people's fingers, and even cut off the neck, but I have never heard of the decree banning kitchen knives.

Therefore, as long as it is properly protected, there is nothing in this world that cannot be used by human beings, even dangerous atomic energy can be used, let alone electric current?

It is actually very simple to solve the problem that the current is too large and can easily cause death.

The data of [second charging technology] mentions that as long as the material with high electron mobility and large carrier concentration can be found, that is, the material with strong current carrying capacity, the volume of the normal charging line can be used to complete the electric energy delivery of greater current intensity.

At the same time, if the insulation material is done well, the basic problem will be overcome.

It is good to say that there are many excellent insulating materials in the world, but it is difficult to find this material with strong current carrying capacity.

At present, copper wire is used more often, but the electronic movement speed of copper conductors is average.

This so-called general means slower than a snail, about 7.5X10 to the minus 5th m/s.

In daily life, the reason why the current travels very fast, close to the speed of light, is because the electric field is built up at the speed of light.

As for graphene, because of the zero band gap, the electrons are very free, and after adding an electric field, the speed of electrons can reach 1/300 of the speed of light, far exceeding that of copper.

Such a high electron migration rate makes many citizen scientists feel that graphene, if produced on a large scale, must be a wire thousands of times superior to copper.

But this is not the case, the electron mobility of graphene is very high, but the problem is that graphene is a two-dimensional material, which is just a thin sheet of atomic thickness, and the number of electrons carried at one time is very limited in the third dimension, which leads to the concentration of carriers is too small and not suitable for wires.

Therefore, the materials with strong current carrying capacity mentioned in [second charging technology] are a big problem.

Of course, as long as it is solved, not to mention [second charging technology], the cable industry around the world will be transformed because of this.

Calming down, Jiang Bo continued to look at an item.

[Technical data of lithium-air battery]: This is a material that can perfectly solve the various technical difficulties of the first generation of lithium-air battery. (Details)

[Note 1]: Lithium-air battery - a battery with lithium as the negative electrode (anode) and oxygen as the positive electrode (cathode) reactant.

[Note 2]: If you are lucky enough, you will be able to achieve the energy density of the lithium-air battery to more than 1000wh/kg according to this information, but not more than 3500wh/kg, as for 11kwh/kg, it is pure nonsense.

[Note 3]: If you succeed in creating a lithium-air battery, second charging technology may become its standard.

"Can the energy density of lithium-air batteries reach up to 3.5 degrees/kg, which is too strong, right?" Jiang Bo muttered.

Although there is lithium in the raw materials, the lithium-air battery and the lithium-ion battery on the market are two completely different concepts.

One lithium metal is the anode, the other is graphite material as the anode, and the lithium metal compound is the positive electrode.

In terms of energy density, the energy density of lithium-ion batteries is still basically at 150-300wh/kg.

The energy density of lithium-air batteries is 1000wh/kg, and the gap is still relatively obvious.

Jiang Bo doesn't know much about batteries, but because when he went to Cloud City before, he helped Peng Wanzi and his father do something and sold Hongwei Battery Manufacturing Company, so it can be regarded as a bit of superficial cognition.

In addition, new energy vehicles are shifting to electric vehicles, and Jiang Bo's attention is naturally there.

It is no exaggeration to say that the future battery market is a proper trillion-level battery, not only mobile phones, tablets, cameras, bracelets and other electronic products need batteries, but also electric vehicles and energy storage markets, the demand for batteries is also very huge.

As for the lithium-air battery, the threshold marked by this system is 1000wh/kg new battery, once launched, I am afraid it will directly subvert the status quo of the entire battery market.

It's as powerful as the smart bracelet, fullerene device, and hair growth lotion launched by Black Bone before.

Turning off the system, Jiang Bo checked the Internet, but found that the comments on the Internet about the lithium empty battery were basically the same criticism.

Because this thing is too advanced to be made in this day and age.

The first difficulty is that oxygen is used as the cathode, and there is no way to separate pure oxygen.

Secondly, the lithium-air battery system is very complex, in addition to the oxidation reaction of oxygen and lithium metal, there are many side reactions inside, such as the side reaction between Li2O2, electrode and electrolyte.

In addition, lithium metal is used as the anode, and the problem of lithium crystal branches cannot be solved, which is easy to cause battery explosion, which is the most difficult.

In general, now the online industry, including many domestic and foreign bulls, are not optimistic about lithium empty batteries, and people who talk about the future of lithium empty batteries are basically ridiculed and criticized as civil science.

It's just that Jiang Bo returned to the system inventory and searched for the points they were not optimistic about, and finally found that there were corresponding solutions to various technical difficulties.

However, Jiang Bo is not specifically engaged in battery research, and he has a big head in various reactive formulas, calculations and technical terms, so he only flipped through it slightly, and then had to skip this technology.

......

(End of chapter)