The vanadium redox flow battery (VRFB) is one promising candidate in large-scale stationary energy storage system, which stores electric energy by changing the oxidation numbers of anolyte and catholyte through redox reaction. The battery uses vanadium's ability to exist in a solution in four different oxidation. Invinity Energy Systems has installed hundreds of vanadium flow batteries around the world. Image Credit: luchschenF/Shutterstock. com VRFBs include an electrolyte, membrane, bipolar plate, collector plate, pumps. As the new energy transformation enters the "decisive phase of long-term energy storage," a technology centered on liquid energy is reshaping the energy landscape—the vanadium redox flow battery (VRB). It's not merely an upgrade to traditional solid-state batteries; rather, it's more like a.