NUS Enterprise

Advanced Redox Flow Batteries

Technology #15141n-11179n


Vanadium redox-flow battery (VRB), as  one of the most promising technologies for stationary energy storage (i.e. for smart grid, PV/wind farm, household application, etc.), stores energy in vanadium redox species-containing electrolyte fluids, while suffers from low energy density, high cost,  and narrow operation temperature range.

Our flow battery technologies, based on the redox targeting concept of battery materials, disruptively address the above critical issues. In our technologies, energy is stored in low-cost solid materials which are kept in tanks, while power is produced from the cell stack when the redox electrolytes are circulated through the storage tanks and regenerated via redox targeting reactions with the materials. Thus, the energy density is considerably enhanced.

CARB Battery Technology

Condensed-phase Aqueous Redox-flow Battery (CARB) leverages on the VRB battery chemistry while using low-cost and environmentally benign material for energy storage, presents superior performance in terms of energy density, cost and operation robustness, thus making it a promising battery technology for the near-term deployment.


v  Up to 2 times energy density of conventional VRB

v  Superior power density as compared to VRB

v  Lower cost by eliminating the vanadium species and introducing cheap and robust H+-storage material

v  Less corrosive acidic electrolytes

v  Wider operation temperature range up to 80oC

v  TRL-5/6, ready for deployment

RFLB Battery Technology

Redox flow lithium battery (RFLB) stores energy in low-cost Li+-storage materials, while operates as a flow battery with decoupled power generation. Robust redox mediator in conjunction with water-based electrolyte endows RFLB with considerably enhanced energy density and great safety.


v  Up to 5 times energy density of conventional VRB

v  Low-cost lithium-ion battery materials, and robust redox molecules in weak alkaline electrolytes

v  Wider operation temperature range

v  TRL-4/5, close to deployment

For more information, contact:

NUS Industry Liaison Office

  : (65) 6516  3622



Principal Investigator: Prof. Wang Qing

Department of Materials Science & Engineering

National University of Singapore


Ref : ID15141N & 11179N