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XRG is the technology and brand of VanadiumCorp GmbH in Rastatt, Germany. Through collaboration with the best teams in the world, XRG is focused on increasing performance and reducing the cost and carbon footprint of vanadium redox flow battery (VRFB) technology. By pushing industry boundaries, and integration of strategic vanadium supply in the future, the vision of XRG is the commercialization of an eco-friendly, cost-effective, and energy-efficient energy storage solution. XRG’s current target market includes a wide range of stationary applications and through continued research and development aims to target mobile applications in future product development.

XRG stands for “exergy” denoting the maximum usable energy, or “qualitative” part, of any thermal process. (2nd law of thermodynamics).

XRG is developed by the wholly-owned subsidiary of VanadiumCorp Resource Inc., VanadiumCorp GmbH in Germany
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What are the advantages of Vanadium Redox Flow Batteries?

    • VRFBs have a lifespan of 20+ years
    • VRFBs offer immediate energy release
    • VRFBs are suitable for grid connection or off-grid settings – ideal for renewable energy
    • VRFBs can discharge 100%, without any damage to the battery
    • VRFBs are non-flammable
  • They ensure power and energy can be scaled independently
  • Vanadium electrolyte can be re-used and does not need to be disposed of
  • The batteries can be cycled more than once per day
  • They use only one element in electrolyte – V2O5
  • VRFB energy storage guarantees uninterrupted power supply

How does a Vanadium Redox Flow battery (VRFB) work?

  • A flow battery is charged and discharged by a reversible reduction-oxidation reaction between the two liquid vanadium electrolytes of the battery
  • Unlike conventional batteries, electrolytes are stored in separated storage tanks, not in the power cell of the battery
  • During operation these electrolytes are pumped through a stack of power cells, in which an electrochemical reaction takes place and electricity is produced
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