Explanation of the technical characteristics of all vanadium flow batteries

Technical characteristics of all vanadium flow batteries (1) Long cycle life: The charge and discharge cycle life of vanadium flow energy storage batteries can reach more than 13,000 times, and the calendar life is more than 15 years. Excellent charge and discharge characteristics: The all-vanadium redox flow battery energy storage system has the characteristics of fast, deep charge and discharge, and does not affect the battery life, and the uniformity of each single cell is excellent. In addition, vanadium ions have high electrochemical reversibility and low electrochemical polarization, which is very suitable for high-current rapid charge and discharge. Independent planning of power and capacity: The power of the all-vanadium flow battery is selected by the size and number of the reactor, and the capacity is selected by the concentration and volume of the electrolyte. Therefore, the power can be expanded by adding the power of the new reactor and the number of new reactors, and the increase of the capacity can be completed by the new electrolyte deposition. Safety and environmental protection: The all-vanadium redox flow battery energy storage system operates under normal temperature and normal pressure conditions, which not only prolongs the service life of battery components, but also shows good safety functions. Other electrolyte solutions can be recycled, which is environmentally friendly and saves resources. Most of the battery packs are cheap carbon materials and engineering plastics, with long service life, rich information sources, outdated production techniques, and easy recycling. In general, if the output power of the all-vanadium flow battery is from hundreds of kilowatts to hundreds of megawatts and the energy storage capacity is from hundreds of kilowatts to hundreds of megawatt hours, the energy storage of flow batteries has obvious advantages. , Is a kind of high-efficiency energy storage technology of choice in great plans. What are the challenges faced by vanadium flow batteries? Ion exchange membrane technology. Ion exchange membranes can affect the ion permeability between the positive and negative electrolytes, thereby affecting the energy power and battery life of the mobile battery. It is necessary to develop highly selective and highly conductive mobile battery ion exchange membranes. (2) The electrolyte preparation process has high concentration and good stability. Before the electrolyte cost accounted for nearly 50% of the total cost. Now that the cost of the battery has fallen, the cost of the electrolyte accounts for a larger proportion. Low energy density and large volume. The battery system must be equipped with auxiliary components such as pipelines, valves, electrolyte circulation pumps, heat exchangers, etc., which makes the flow battery more messy and puts forward higher requirements on the reliability of the battery system. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Will there be dust in the sintering process of lithium cobalt oxide materials?