New and improved flow cell battery EV to appear at Geneva auto show

nanoFLOWCELL QUANT F electric vehicle 2

There are many innovative battery designs in development around the world, but a Liechtenstein-based company has developed something truly unique – a flow battery, which uses two ionic fluids stored in tanks.

nanoFLOWCELL will present its new QUANT F electric vehicle at the upcoming Geneva Autosalon. The latest iteration of the QUANT features four electric motors and a 2-speed automatic transmission. It achieves a top speed of 300 km/hr, and a range of 800 km.

“The QUANT F is a complete re-design of its predecessor, the QUANT E,” said Chief Technical Officer Nunzio La Vecchia. “We are currently able to attain peak output of 801.69 kW for a limited duration and a maximum rated voltage of 735 V (previously 600 V). This represents a massive increase for an electric vehicle. We researchers are not interested in pumping up hp/kW figures, but rather in realizing what is technically feasible. For both technical and economic reasons, the rated voltage for normal operation of the QUANT F will stand at approximately 400 V in future. This enables efficient and economical driving and means correspondingly greater ranges accompanied by outstanding performance with zero harmful emissions.”

nanoFLOWCELL QUANT F electric vehicle

The nanoFlowcell continuously feeds 50 amperes of current into a buffer system, which is able to supply over 2,000 amperes when needed for full performance. “To our knowledge, no one has ever before put a system delivering over 2,000 amperes on the road in a passenger car. This is unique. We achieve this by combining our flow battery with the new buffer system,” says Nunzio La Vecchia. “Please consider that we are driving a 5.25-metre long sports saloon in all-electric mode over a range of 800 km. This is not a small car, but a large sports saloon for four people.”

“Instead of using hydrogen and oxygen as in a conventional fuel cell, we work with two ionic fluids – one with a positive charge and one with a negative charge,” explains La Vecchia. “With a total tank capacity of 500 liters, comprising two tanks accommodated separately in the QUANT’s substructure, we have achieved an increase in range of over 30 percent in comparison to the QUANT E from 2014. We are only in the initial phase of our development work. The fact that we store the energy for our drive in a fluid provides us with enormous advantages over systems employed to date in the field of electric mobility. We can use all the cavities in the vehicle to transport the ionic fluid. As the fluid is neither flammable nor toxic, we believe we are absolutely on the right track with this medium.”


Source: nanoFlowcell via Green Car Congress

  • Ad van der Meer

    I am confused. There are 2 fluids that react in the fuel cell. I wonder what happens in this fuel cell, but when I assume a fluid without charge remains, a third tank is needed. Unless, of course, the fluid is dumped along the way. I can’t imagine that being the case because that would change the weight of the car by 500 kg/1100lbs messing up the front to back balance.
    In the most positive case fueling from empty to full is going to take 3 times as long as filling a tank of gas.

  • Michael Walsh

    Hey Van de Meer! Stop guessing and give them a phone call….

    • Ad van der Meer

      I was hoping journalist would that for me, but I can wait until Geneva. I suspect this car will be ever so slightly beyond my financial means, so I let them to their work without a nosy Dutchman asking stupid (I assume) questions.

  • vike

    This would be more interesting if it could also be recharged from the grid, but quoting from the earlier article, “once the electrolytic fluids are discharged, the contents of both tanks must be replaced”. Ouch.

    It’s great that you can replace discharged fluids in minutes at a service station for long distance travel, but one great advantage of BEVs is that they don’t require ANY service stops for day to day use, instead recharging overnight from the grid. If flow cell fluids could be recharged/reconditioned by applying a charge instead of always needing replacement, that would be the best of both worlds.

  • Michael Clark

    Question ? What level charging dose the car use level 0ne two or three ???

    Question ?? Dose the electrolytic fluids need changed after 10,000 charges

    Question? What would be the cost of replaceing electrolytic fluids??

    • Paul Maher

      Have you gotten any answers? How much fluid do you replace how often and is consumed or to you have to adjust the concentration of the electrolytes as you do in a lead acid battery. The articles I have seen haven’t really addressed these questions.

  • EMF

    Interesting article, but it leaves me with more questions than answers. If this translates into much lower costs per mile/KM then they have real winner here. It does seem to be a very good option for commercial vehicles and public transportation applications where weight isn’t quite so critical but range is.

  • Michael Clark

    Paul : Haven’t gotten any an answers yet )-; That makes me think of more

    How much does a gallon of fluid weagh ?? One hundred an theirty gallons in a
    small car..
    Question ? How about useing this system in large semi trucks ? One
    motor on each wheel ??