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2021

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11

Since hydrogen fuel is so good, why can't we find it by lithium battery?


Take the lithium-ion battery as an example. The lithium atom on the positive pole is the storage body of energy. The atom is formed by the combination of Wutarang type lithium ion and Pan Jinlian type electron. This is a fragile combination, because the binding ability of lithium atom to check the electron is too weak, resulting in the electron itself is very active.

Last weekend, after drinking with his buddies, Lao Qi, who had choked for his dream and bought the first stock of young people, regretted talking about his failed investment experience.

In addition to tears, he threw me a question that hit the soul: electric cars are developing so well, and hydrogen fuel cells are still in the early stage of development. Is there any good stock in this track?

 

 

It seems that the guy who lost his shorts still knows the investment method of "buy expectations and sell reality". He also learned some secrets from the big news that Buffett has successively reduced his holdings in BYD.

He directly omitted the twists and turns of searching for smart electric vehicle stocks, and let me recommend the stocks of hydrogen fuel cell circuit.

Having shared the same window and slept in the same bed together, I couldn't bear to let him directly break the defense, so I asked him: What is better about hydrogen fuel cells than lithium batteries?

Having done his homework, he repeated what he had already done on the internet: direct chemical reaction of hydrogen and oxygen, the reaction product is water that can be drunk directly, what a new battery.

Battery? Wait a minute, hydrogen fuel cell is not the new type of battery that everyone imagines.

Therefore, I vividly popularized some principles of battery and hydrogen fuel cell to him and his brothers who were looking forward to it.

The battery is an "energy storage device", which stores the electric energy in the positive pole.

Take the lithium-ion battery as an example. The lithium atom on the positive pole is the storage body of energy. The atom is formed by the combination of Wutarang type lithium ion and Pan Jinlian type electron. This is a fragile combination, because the binding ability of lithium atom to check the electron is too weak, resulting in the electron itself is very active.

Therefore, when the external circuit is connected, the window that changes the history of Shuipo Liangshan will open.

The electron rushes out of the wall directly to the negative electrode, and the lithium atom that has lost the electron becomes lithium ion, which is transferred to the negative electrode through the electrolyte that allows the ion to pass through but does not allow the electron to pass through, and recombines with the electron that is transferred to the negative electrode through the external circuit to form lithium atom.

The joys and sorrows of hydrogen fuel cells are similar. Let's think about the periodic table of chemical elements we learned in junior high school: hydrogen, helium, lithium, beryllium and boron

Hydrogen is more advanced than lithium. The more advanced it is in the periodic table, the more henpecked it is. Therefore, the hydrogen atom on the positive side of hydrogen fuel cell can not control the changes of electrons.

The next thing is very similar. After the external circuit is connected, the electrons can't wait to run away from home and run from the external circuit to the negative electrode. The unwilling hydrogen ions are transferred to the negative electrode through the electrolyte (membrane electrode) that allows the ions to pass through but does not allow the electrons to pass through, and meet with it.

This is the reason why hydrogen fuel cells have the word "battery". In terms of structure, they have both positive and negative electrodes and electrolytes, just like ordinary energy storage batteries. In terms of chemical reaction, it is because the atomic nucleus on the positive side can't hold the electrons, and the electrons run to the negative side, and the infatuated ions take the shortcut (electrolyte) to meet with the negative side.

However, in the process of combining the negative electrode, lithium ion changed into Wu Erlang, the favorite of the electron, and the negative electrode happily combined with the electron, while the negative electrode of hydrogen fuel cell appeared a third party - oxygen

Finally, hydrogen ions, electrons and oxygen happily combine to form water.

The reason why hydrogen fuel cell is not a real battery is that it does not store energy. The hydrogen atom at the positive electrode is externally supplied, and the oxygen atom at the negative electrode is also externally supplied. From the perspective of externally supplied reactants and energy conversion, it is more like an internal combustion engine.

However, the working principle of internal combustion engine is to convert chemical energy into heat energy and then into kinetic energy by combustion, while the temperature of hydrogen fuel cell is relatively constant, which directly converts chemical energy into electric energy, which is the difference between the two.

In general, hydrogen fuel cell has the dual properties of battery and fuel engine, which is why the power system of hydrogen fuel cell vehicle is called "hydrogen fuel cell engine".

After listening in a muddled way, Lao Qi immediately raised the second question: Since it has both advantages, does it still have a bright future?

The answer is no, because compared with electric vehicles, the structure of hydrogen fuel cell vehicles is too complex. Let's take a picture of the power system of hydrogen fuel cell vehicles.

The fuel cell system engine here is quite complex. In addition to the hydrogen fuel cell stack, there are also a series of accessories to maintain the continuous redox reaction of hydrogen and oxygen.

In contrast, how simple the pure electric vehicle power system is!

The reason why the cost of hydrogen fuel cell vehicles remains high is that the structure is too complex. Do you think people will accept that Class B vehicles become Class A vehicles?

This is why intelligent pure electric vehicles will be the mainstream form of new energy passenger vehicles.

Of course, hydrogen fuel cell vehicles have a certain application in commercial vehicles such as heavy trucks and buses that are not sensitive to space and cost.

As for how big the market space is and how big the foam of related stocks can be blown, I can't predict it!

 

[Copyright Statement] This article is written by the author who has settled in the headliner platform. The view only represents the author himself, not the position of auto headlines

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