How long is the service life of vanadium batteries?

Long service life of vanadium batteries The service life of lithium batteries on the market is about 1,000 to 5,000 times. The important energy storage principle of lithium batteries is the insertion and removal of lithium ions on solid electrodes. Repeated extraction (error) of lithium ions causes stress changes in electrode data, leading to crack failure. However, the charge-discharge mechanism of vanadium batteries is a modification of the valence state and is a completely reversible process. Considering the lifetime of the rest of the system, it is possible to do this completely in more than half a century. In your substation, you save a lot of maintenance costs. Even compared with other mobile batteries, the durability of vanadium batteries is impressive. A layer of ion exchange membrane is used to separate the positive and negative electrodes of the flow battery to prevent cross contamination caused by the mixing of the electrolytes of the positive and negative electrodes. But now even the best Nafion membranes are not hermetically sealed, and over time some ions will penetrate to the other side. In an asymmetric flow battery, the positive electrode ions cannot participate in the electrode reaction on the negative electrode, resulting in a slow decrease in capacity until the original volume is reduced by half. But for vanadium batteries, the negative electrolyte composition is the same. No matter how you penetrate it, I will charge myself anyway. ╮(╯▽╰)╭When long-term energy storage is required, the electrolyte in the pile can be emptied to Prevent contact between positive and negative electrolytes. Therefore, the self-discharge rate of vanadium batteries is relatively low, and the storage time can vary from a few hours to several days. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.