The main factors affecting the alkaline fuel cell are: oxidizing agents, pressure, temperature, CO, life; the performance of the battery pack is directly related to current density, and the battery voltage is directly related to the performance of the battery performance of the 18650 lithium battery, mainly electrode components (such as catalyst) The amount and cost, the type of oxidant (air or pure oxygen), working pressure and temperature, electrolyte concentration, and impurities in the fuel gas and oxidant gases.1, the effect of oxidant
The optimum state of the battery heap is in pure oxygen instead of in the air. Because the electrodes are required to withstand a large amount of associated gas (nitrogen), the electrodes must be subjected to a large amount of associated gas (nitrogen), and even if the pretreatment removes CO, the AFC is also very sensitive to other impurities in the air. Use air or pure oxygen should be determined depending on the situation. For spatial stations or certain military amenities (such as submarines) can only choose pure oxygen, and for many business applications, no matter how many factors such as safety, cost, etc., choose air more appropriate.
2, pressure shadow
Improve pressure is advantageous to improve battery performance. Therefore, many fuel cell companies develop high pressure fuel cell systems, such as AFCs developed for satellites or spacecrafts developed by the International Fuel Battery (JFC).
3, the temperature of the temperature
Since the KOH solution has good low temperature conductive capacity (especially when compared to phosphoric acid), the normal operating temperature of the AFC is approximately 70 degrees, and the power will be reduced by half at room temperature. From room temperature to 50 and 60 degrees, the increase in power with the electrolyte temperature is almost linear. Further improve temperature, it is also related to other parameters, such as electrolyte concentration, pressure.
4, CO: impact
In an alkaline fuel cell, an more important problem is the carbon dioxide problem during the operation of the electrode. In the alkaline medium, the pore of the electrolyte passage and the porous electrode is blocked due to absorption CO: the pore of the electrolyte passage and the porous electrode is a main reason for the long-term operational stability of the AFC. The life of the carbon carrier electrode coated with the catalyst, expanded at 65 ¡ã C, IOOMA / C
When carbon dioxide gas is contained, it is 1600 -3400h. The carbon dioxide in the gas is removed under the same conditions, and the life of the electrode is increased to 4000 h; when the airflow density is reduced. The temperature reduction will also reduce the life, because the solubility of carbon dioxide also decreases. 1600h is only 66 days. So this situation is only applicable to few applications. For AFCs that need to be operated long-term operation, the reaction gas is before entering people. Pretreatment must be made to reduce its COT concentration to mg / m3.
5, life
It is necessary to obtain the balance of technical life and economic life in terms of the life of the fuel cell. Some occasions, the life of 5000h or even 1000 hours is enough, and some take 25000 hours or even longer. For at least 40000 hours for the power plant Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
