Introduction to the advantages and working principle of hydrogen-oxygen fuel power battery

Advantages of hydrogen-oxygen fuel power battery 1. Low material price 2. Simple operation 3. Safety 4. High efficiency 5. Pollution-free operation principle of hydrogen-oxygen fuel power battery The fuel power battery is a kind of chemical battery, which uses substances to produce chemical reaction. The output energy is directly converted into electrical energy. From this point of view, it is similar to other chemical batteries such as manganese dry batteries and accumulators. However, it needs to continuously supply reaction material fuel and oxidant to it during operation, which is different from other ordinary chemical batteries. Because it converts the energy released by the chemical reaction of the fuel into electrical energy output, it is called a fuel power cell. Specifically, a fuel power cell is a generator that uses the reverse reaction of the electrolysis of water. It consists of a positive electrode, a negative electrode, and an electrolyte plate sandwiched between the positive and negative electrodes. In the beginning, the electrolyte plate was formed by using the electrolyte to enter the porous plate, and now it is developing to directly use the solid electrolyte. During operation, fuel (hydrogen) is supplied to the negative electrode, and oxidant (air, the effective component is oxygen) to the positive electrode. Hydrogen is decomposed into positive ions H+ and electrons e- at the negative electrode. Hydrogen ions enter the electrolyte, while electrons move to the positive electrode along the external circuit. The electric load is connected to the external circuit. On the positive electrode, the oxygen in the air and the hydrogen ions in the electrolyte absorb the electrons that reach the positive electrode to form water. This is the reverse process of the electrolysis of water. Using this principle, the fuel power cell can continuously transmit electricity to the outside during operation, so it can also be called a generator. Generally speaking, to write the chemical reaction equation of a fuel power battery, it is necessary to pay great attention to the acidity and alkalinity of the electrolyte. The electrode response on the positive and negative electrodes is not isolated, it is often closely related to the electrolyte solution. For example, the hydrogen-oxygen fuel power battery has two kinds of acid type and basic type. The negative reaction type in acid solution is: 2H2-4e-u003du003d4H+ positive electrode reaction type is: O2+4H++4eˉu003du003d2H2O; if it is in alkaline solution In the medium, it is impossible to present H+, and in the acid solution, it is impossible to present OHˉ. If the electrolyte solution is an alkali or salt solution, the negative electrode reaction formula is: 2H2+4OHˉ-4eˉu003du003d4H20 The positive electrode is: O2+2H2O+4eˉu003du003d4OHˉIf the electrolyte solution is an acid solution, the negative electrode reaction formula is: 2H2-4eˉu003d4H+ (Cation), the positive electrode is: O2+4eˉ+4H+u003d2H2O The recall rule is as follows: Under alkaline conditions, it is easy to remember the positive coefficients of O2, H2O, eˉ, 4OHˉ are 1, 2, 2, 4, and then use Subtract the above formula from the total response equation. Under acidic conditions, it is easy to remember the negative reaction formula (4H+)+(-4eˉ)u003d2H2, and the required equation can be obtained by shifting the term, and the positive reaction formula can also be obtained by subtracting the upper formula from the total reaction formula. During the operation of the oxyhydrogen fuel power cell, hydrogen is supplied to the hydrogen electrode and oxygen is supplied to the oxygen electrode. Under the effect of the catalyst on the electrode, hydrogen and oxygen pass through the electrolyte to produce water. At this time, there are excess electrons on the hydrogen electrode and negatively charged, and the oxygen electrode is positively charged due to the shortage of electrons. After turning on the circuit, this reverberation process similar to combustion can proceed one after another. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What is the battery material? What is the cause of the explosion of the battery