Electric now at home and abroadCarOfAccumulatorThere are mainly lead-acid batteries, cadmium-nickel batteries, zinc-air batteries, silver-zinc batteries, fuel cells, etc. Among them, fuel cells are a new thing that has only appeared in recent years. In comparison, fuel cells have many advantages such as high power density, low operating temperature, good starting performance, few moving parts, safety and reliability, low pollution and low noise.
A fuel cell is a battery that directly converts chemical energy into electric current. It only needs two elements, hydrogen and oxygen, and uses these two elements to convert into electric current through mediation. Oxygen can be extracted directly from the air, and the key is the method of extracting hydrogen. Hydrogen will be extracted from gasoline, methanol, ethanol and other fuels, hence the name of the fuel cell (FuelCell).
How does a fuel cell generate electricity? Let's start with the electrolysis of water. Electrolyzed water can decompose water into oxygen and hydrogen, which is general chemical knowledge. The fuel cell reverses this process, transforms the two gases of oxygen and hydrogen into water, and directly converts the resulting energy into electric current. In this process, the two gases cannot be in direct contact, they must be separated by a layer of electrolyte. The electrolyte is composed of a polymer foil that has been plated with platinum, and only allows one of the two gases to pass through the electrolyte layer in a charged manner, that is, in the form of an ion. When the ion is a hydrogen ion (proton), each of its protons leaves an electron. In this way, a negative charge is formed on the hydrogen side of the electrolyte, and a positive charge is formed on the oxygen side of the electrolyte, thereby forming a certain voltage, and when there is voltage, there is current.
Fuel cell is the direction of modern automo
Electric now at home and abroadCarOfAccumulatorThere are mainly lead-acid batteries, cadmium-nickel batteries, zinc-air batteries, silver-zinc batteries, fuel cells, etc. Among them, fuel cells are a new thing that has only appeared in recent years. In comparison, fuel cells have many advantages such as high power density, low operating temperature, good starting performance, few moving parts, safety and reliability, low pollution and low noise.
A fuel cell is a battery that directly converts chemical energy into electric current. It only needs two elements, hydrogen and oxygen, and uses these two elements to convert into electric current through mediation. Oxygen can be extracted directly from the air, and the key is the method of extracting hydrogen. Hydrogen will be extracted from gasoline, methanol, ethanol and other fuels, hence the name of the fuel cell (FuelCell).
How does a fuel cell generate electricity? Let's start with the electrolysis of water. Electrolyzed water can decompose water into oxygen and hydrogen, which is general chemical knowledge. The fuel cell reverses this process, transforms the two gases of oxygen and hydrogen into water, and directly converts the resulting energy into electric current. In this process, the two gases cannot be in direct contact, they must be separated by a layer of electrolyte. The electrolyte is composed of a polymer foil that has been plated with platinum, and only allows one of the two gases to pass through the electrolyte layer in a charged manner, that is, in the form of an ion. When the ion is a hydrogen ion (proton), each of its protons leaves an electron. In this way, a negative charge is formed on the hydrogen side of the electrolyte, and a positive charge is formed on the oxygen side of the electrolyte, thereby forming a certain voltage, and when there is voltage, there is current.
Fuel cell is the direction of modern automobile technology development. Developed countries such as the United States, Europe and Japan attach great importance to the development of fuel cell.The world’s first fuel cell powered car was powered byBenzManufactured by a car company and exhibited to the public in Berlin, Germany, in May 1996. This car called "Necar" does not produce pollutants. It emits pure water vapor into the air without any other substances, or even carbon dioxide. It uses methanol as fuel.The fuel cell developed by the American company Abl uses gasoline as fuel. This vehicle-mounted fuel cell power system is powered by gasoline.Fuel tank, Converter, fuel cell, and electric motor. Among them, the converter is a device that converts gasoline into hydrogen. It heats the gasoline until it is in a vaporized state, and then enters it into a metal reaction cylinder with ignition function to produce hydrogen through "incomplete combustion" under low oxygen conditions. The hydrogen is delivered to the fuel cell.
Due to the complex structure of the fuel cell, the production cost is high and cannot be promoted. Up to recent years, a series of improvements have been made. The price of fuel cell cars is about 10%-15% higher than that of ordinary cars, which has a certain development value.
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