I Have a Store In the World of American Comics

In addition to the flat type like other fuel cells, the cell shape also has a cylindrical type developed to avoid stress concentration.

The reaction formula of SOFC is as follows:

Fuel electrode: H2+O2-==H2O+2e-(7)

Air pole: 12O2+2e-==O2-(8)

All: H2+12O2==H2O(9)

At the fuel electrode, H2 moves through the electrolyte and reacts with O2- to form H2O and e-.

The air electrode generates O2- from O2 and e-.

The whole generates H2O from H2 and O2 like other fuel cells.

In SOFC, because it is a high temperature working type, the main component of natural gas, CH4, can be directly modified into H2 for use without the action of other catalysts, and the main component of gas, CO, can be directly used as a fuel.

It seems that the fuel cell is very good, better than anything, but the main components are the electrode Electrode, the electrolyte membrane ElectrolyteMembrane and the current collector.

The electrode of a fuel cell is an electrochemical reaction site where the fuel oxidation reaction and the oxidant reduction reaction occur. The key to its performance depends on the performance of the catalyst, the material of the electrode and the process of the electrode.

The electrode can be divided into two parts, one is the anode (Anode), the other is the cathode (Cathode), the thickness is generally 200-500mm.

The difference between its structure and the flat electrode of ordinary batteries is that the electrode of the fuel cell is a porous structure, so the main reason for designing a porous structure is that most of the fuel and oxidant used in the fuel cell are gases (such as oxygen, hydrogen, etc.).

However, the solubility of gas in the electrolyte is not high. In order to improve the actual working current density of the fuel cell and reduce the polarization effect, a porous structure electrode was developed to increase the surface area of ​​the electrode participating in the reaction. It is one of the important key reasons to move from the theoretical research stage to the practical stage.

At present, the electrodes of high temperature fuel cells are mainly made of catalyst materials, such as Y2O3-stabilized-ZrO2 (referred to as YSZ) of solid oxide fuel cells (referred to as SOFC) and nickel oxide electrodes of molten carbonate fuel cells (referred to as MCFC), etc. .

The low temperature fuel cell is mainly composed of a thin layer of catalyst material supported by a gas diffusion layer, such as the platinum electrode of phosphoric acid fuel cell (PAFC) and proton exchange membrane fuel cell (PEMFC).

The main function of the electrolyte separator is to separate oxidants and reductants and conduct ions. Therefore, the thinner the electrolyte separator, the better, but the strength also needs to be considered. As far as the current technology is concerned, its general thickness is about tens of millimeters to hundreds of millimeters. .

As for materials, there are mainly two development directions at present. One is to first make porous diaphragms with insulating materials such as asbestos (Asbestos) films, silicon carbide SiC films, and lithium aluminate (LiAlO3) films, and then immerse them in molten lithium-potassium carbonate. salt, potassium hydroxide and phosphoric acid, etc., to make it adhere to the pores of the diaphragm, and the other is to use perfluorosulfonic acid resin (such as PEMFC) and YSZ (such as SOFC).

The current collector, also known as bipolar plate ( ), has the functions of collecting current, separating oxidant and reducing agent, and diverting reaction gas. The performance of the current collector mainly depends on its material characteristics, flow field design and processing technology.

Obviously, the technology of fuel cells is difficult to realize at present. The hunters have to turn their perspective to the next one, and when the hunters were "fishing in a daze", Zhou Wenwen was directing the soldiers to cast copper Earth-made accelerators are installed on the conductive pipes.

After the copper-cast conductive pipes were installed and fixed on the wooden boards with iron nails, what appeared in front of them was a circular pipe track electric particle restraint launcher carried by a wooden cart.

In order to conduct electricity, many parts of the pipe are made of silver, copper and gold as the main materials, which are cast and then decorated by the porcupine.

Only the anti-load section around the peripheral electronic balance device area at the core is made of a new steel alloy made of steel, nickel and manganese.

Of course, the strength ratio of the new steel alloy is not comparable to that of the earth's marine strong steel, but there is no way, this is the best steel Zhou Wenwen can get.

Zhou Wenwen put the secret source stone on the "cage" made of black yao stone in the center of the annular pipe, and then pulled hundreds of silver, copper and gold wires into the cage, and used strong tin. Fight with the secret source stone one by one.

After all this was done, it was night time, and the night sky was full of stars. Zhou Wenwen glanced at the hunter who was still in a daze, sighed and let everyone take the hunter to Bei County. In short, the farther away from the Fargoland mines, the better.

Otherwise, the huge consequences of the failure of the experiment—all objects within a radius of 15 kilometers are exposed to high radiation rays, and if everyone eats them, Zhou Wenwen's efforts will be in vain.

(Remarks, who has the high-definition world map of Azeroth, the author couldn't find it after searching for a long time, Suo Xing gave up, if anyone has it, be sure to leave a message)

......

The hunters at this time are still thinking about whether it is a chemical battery or a thermoelectric battery.

The chemical battery in the mouth of hunters refers to a device that can convert chemical energy into electrical energy.

Its main part includes an electrolyte solution and two electrodes, positive and negative, immersed in the solution.

When in use, the wire is connected to the two electrodes, that is, current passes (discharge), thereby obtaining electrical energy.

After discharging to a certain extent, the electric energy is weakened, and some can be recharged and used again, called storage batteries, such as lead storage batteries, iron-nickel storage batteries, etc. Batteries, fuel cells, etc.

The primary battery uses the difference in metal between the two electrodes to generate a potential difference, thereby allowing the flow of electrons to generate current. Also known as a non-battery battery, it is a type of electrochemical battery. Its electrochemical reaction cannot be reversed, that is, it can only be Chemical energy is converted into electrical energy, which simply means that electricity cannot be re-stored, as opposed to batteries.

Chemical batteries can be divided into: primary batteries (primary batteries); secondary batteries (rechargeable batteries); lead-acid batteries; fuel cells~www.wuxiamtl.com~ Among them: primary batteries can be divided into: paste zinc manganese Batteries, cardboard zinc-manganese batteries, alkaline zinc-manganese batteries, button-type zinc-silver batteries, button-type lithium-manganese batteries, button-type zinc-manganese batteries, zinc-air batteries, primary lithium-manganese batteries, etc.

Secondary batteries can be divided into: nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, secondary alkaline zinc-manganese batteries, etc.

Lead-acid batteries can be divided into: open lead-acid batteries, fully enclosed lead-acid batteries, etc.

A thermoelectric battery is a device that uses temperature differences to directly convert thermal energy into electrical energy.

However, the materials of thermoelectric batteries are generally two kinds of metals and semiconductors. The battery made of metal has a small Seebeck effect, so it is often used to measure temperature, radiation intensity, etc.

This kind of battery generally connects several thermocouples in series, one of which is exposed to a heat source, and the other is fixed in a specific temperature environment. The electromotive force generated in this way is equal to the sum of each galvanic couple, and then converted into temperature according to the measured electromotive force. or intensity.

Chapter 0240 Trailer Launch