Hydrogen energy fuel power cells are non-polluting to the environment, it is through electrochemical reactions rather than using combustion or storage battery methods, the most typical traditional backup power methods where combustion releases pollutants like COx, NOx, SOx gases and dust. A fuel-powered cell will only give off water and heat. If hydrogen is generated through renewable energy sources, the whole cycle is a thorough process with no harmful emissions.
(Schematic diagram of the hydrogen fuel power cell principle)
The hydrogen fuel power cell is a power generation device that converts the chemical energy of hydrogen and oxygen directly into electricity. The basic principle is the inverse reaction of electrolysis of water, supplying hydrogen and oxygen to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, electrons are released and reach the cathode through the external load. Hydrogen and oxygen are supplied to the anode and cathode respectively, and hydrogen diffuses outward through the anode and reacts with the electrolyte, and then releases electrons through the external load to the cathode.
A hydrogen fuel power cell is strictly a power generation device, like a power plant, which is an electrochemical power generation device that converts chemical energy directly into electrical energy. In addition, the electrodes of the hydrogen fuel power cell are made of special porous material, which is a key technology of the hydrogen fuel power cell, not only to supply a large contact surface for the gas and electrolyte, but also to serve as a catalyst for the chemical reaction of the cell.
Hydrogen has many advantages as an energy source. Hydrogen can be produced by photolysis of water, which is in large reserves and relatively inexpensive; hydrogen fuel is burned to produce water again, which is a very clean energy source with harmless combustion. Hydrogen is less lossy than electricity in storage and transmission, and the calorific value of hydrogen combustion is high. 1 kg of hydrogen combustion appears as the heat equivalent to 3 kg of gasoline or 4.5 kg of coke. However, the storage and transportation of hydrogen and the use of solar energy to decompose water to produce hydrogen have been bottlenecks in the development of hydrogen energy in applications.
The basic principle of hydrogen fuel power cell is the reverse reaction of electrolysis of water, supplying hydrogen and oxygen to the anode and cathode respectively. Hydrogen diffuses outward through the anode and reacts with the electrolyte, and the released electrons reach the cathode through the external load, which is a kind of power generation device that converts the chemical energy present in the fuel and oxidizer directly into electrical energy. Externally there are positive and negative electrodes and electrolyte, etc., like a battery, but in essence a hydrogen fuel power cell vehicle does not need to be recharged, only hydrogen added. To use an analogy, the battery of a pure electric car is like a storage power station, while a hydrogen fuel power cell is like a power station.
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