Vanadium-Ionen-Batterie-Energiespeicherkraftwerk

Die Vanadium-Redox-Batterie hat zwei Elektrolyte, einen für die positive und einen für die negative Elektrode. Der Strom wird durch den Anstieg und Abfall des Valenzzustands der Vanadium-Ionen gebildet, während die Lithium-Batterie den Strom hauptsächlich durch den Transport von Ionen bildet.

What is a vanadium redox flow battery?

Vanadium Redox Flow batteries can be deployed as a replacement for or complement to Lithium-Ion batteries, a/o for local renewable energy production on industrial sites or in centralised setups.

What happens when a vanadium ion is charged?

During charging, an applied voltage causes vanadium ions to each lose an electron on the positive side. The freed electrons flow through the outside circuit to the negative side, where they are stored. During discharging, the stored electrons are released, flowing back through the outside circuit to the positive side.

Why are vanadium batteries more expensive than lithium-ion batteries?

As a result, vanadium batteries currently have a higher upfront cost than lithium-ion batteries with the same capacity. Since they're big, heavy and expensive to buy, the use of vanadium batteries may be limited to industrial and grid applications.

Can vanadium ions be transferred across a cell membrane?

No transfer of vanadium ions across the membrane will ensure maximum coulombic efficiency and any crossover of vanadium/other species into the opposing cell will result in self discharge and reduced energy efficiency in the cell .