Electrode structure of flow battery, flow battery bank and sealed structure of flow battery bank

摘要

The present invention has described the electrode structure of the follow battery, the bank structure of the follow battery, and the sealed structure of the follow battery battery. The density of vertical fibers in the electrode fibers is greater than the density of horizontal fibers. The ratio of the number of vertical fibers to the number of horizontal fibers in the unit volume electrode fiber is at least 6: 4. The electrode structure is composed of an odd number of layers of electrode fibers, and the porosity of the other layers is larger than that of the center layer. The electrode structure described in the present invention is centered on a vertical fiber perpendicular to the electrode table. There are two reasons. First, the contact area between the electrode surface and the adjacent component can be increased, and the contact resistance can be reduced. Second, it gives the electrode excellent mechanical performance. The modified structure reduces the contact resistance to 30% to 50% compared to the conventional structure. Each electrode layer has a different thickness due to a change in porosity, and each layer after thickness improvement has the same porosity after compression. Thanks to the uniform structure after compression, non-uniform phenomena of mass transfer when the electrolyte flows inside the electrode can be avoided, and battery energy output at constant power can be increased by reducing concentration polarization of the battery.