This electrified 2+2 sports coupe features an odd powertrain that leaves us wondering where we could refuel it.

The NanoFlowcell Quant 48Volt arrives at the 2017 Geneva Motor Show as a bit of a conundrum. The maker promises hypercar-rivaling performance with 751hp and a range of 621 miles. However, the model’s unorthodox powertrain raises the question of how someone would ever refuel it.

Nanoflowcell has been refining its powertrain tech for many years, including with the e-Sportlimousine and Quantino concepts. The Quant 48Volt is the latest evolution of the idea. This time, the firm claims the vehicle can reach 62mph in 2.4 seconds and a top speed of 186mph.

Nanoflowcell Quant 48 Volt
Nanoflowcell Quant 48 Volt

A suitably sci-fi 2+2 coupe gives the Quant 48Volt a futuristic look that matches the unusual powertrain. The ionic liquids and flowcell sit in the vehicle’s rear, which allows there to be low-slung nose. A steeply raked windshield flows backward to a double-bubble roof, and the curvy shape continues on the rear glass. Gullwing doors open to allow access to both rows of seats. Inside, a digital display spans the dashboard.

As the automaker’s name suggests, the Quant 48Volt uses a flow battery. A pair of 200-litre tanks hold ionic liquids – one with a positive charge and the other negative. Pumping them past a membrane generates electricity, which batteries store and feed to four electric motors. The liquid exits the vehicle as water vapour.

Nanoflowcell Quant 48 Volt
Nanoflowcell Quant 48 Volt

The major downside to this system is that you need access to the ionic liquids, which are basically water with metallic salts, to keep the Quant 48Volt going. However, there’s no infrastructure to get access to this fuel. It’s similar to the problem facing hydrogen fuel cells but without global car manufacturers like Honda, Hyundai, and Toyota to champion the tech. 

Source: Nanoflowcell

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NanoFlowcell Quant 48Volt

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World’s first electric sports car with 48 V low-voltage flow cell drive goes from 0 to 100 km/h in 2.4 seconds

nanoFlowcell presents QUANT 48VOLT sports car concept with the globally unique nanoFlowcell® 48VOLT low-voltage drive based on its advances in flow cell technology

The nanoFlowcell® 48VOLT flow cell drive is currently the most powerful, most environmentally compatible, most economical and safest drive system for electric vehicles on the market

London and Kilchberg, February 2017 - nanoFlowcell Holdings announces that it will present its latest advances in flow cell research at this year's Geneva International Motor Show. Wrapped in the extravagant bodywork of an electric sports car that is utterly unique in the automotive industry, the QUANT 48VOLT, the company is showcasing the state-of-the-art in modern flow cell research. nanoFlowcell Holdings has succeeded in developing the first ever controllable flow cell that enables a standalone design for low-voltage electric drives without the need for heavy and expensive supercapacitors. And the 2+2-seater has no lack of power at its disposal - the 560 kW all-wheel drive delivers top speeds of up to 300 km/h. However, nanoFlowcell® 48VOLT is not just about powerful performance, but is also currently the lightest, safest, most environmentally compatible and most economical drive system available anywhere for electric vehicles.

What makes the QUANT 48VOLT so special is the radical new design of its flow cell drive. The previous model, the QUANT FE, achieved its exceptionally sporty performance figures with a 700 V high-voltage drive system, whereby the QUANT 48VOLT runs entirely on low-voltage technology.

To compete in acceleration and power output with vehicles powered by internal combustion engines, conventional electric vehicles need electric drive systems with a battery voltage of 400 V and more. In fact, the automotive industry is currently contemplating increasing the voltage in electric vehicles to 800 V in future.

With the QUANT 48VOLT, nanoFlowcell Holdings questions this development alternative for electric-car technology and makes a globally unique statement: Flow cell technology in the QUANT 48VOLT delivers extreme performance (> 560 kW) at safe battery voltages (48 V). The key is the improved membrane structure of the nanoFlowcell® and the connection of several flow cells. Over two-and-a-half years of development, the company successfully applied a specialist nano process to increase the size of the flow cell's membrane surface in a way that multiplied the reaction surface by several orders of magnitude without compromising the compactness of the cells. Another innovation in the QUANT 48VOLT is the use of six flow cells, enabling more bi-ION electrolyte to be discharged in a shorter space of time, thus allowing more energy to be generated. Furthermore, this new cell design has also been configured to enable the nanoFlowcell® to process a higher energy density in the bi-ION electrolyte solution (more than 600 Wh).

The drive has also been completely redesigned. Used for the first time in the QUANT 48VOLT are innovative 45-phase low-voltage motors, which facilitate high power paired with minimised cross-sections in the electrical wiring. The special feature of these low-voltage motors is their solid aluminium net structure, which replaces the complicated copper windings used in conventional electric motors. This reduces the volume of the motor relative to its power output, while lowering weight and cost, and simplifying series production.

Questions on the power of the new nanoFlowcell® 48VOLT flow cell drive are quickly answered: The 560 kW (4 x 140 kW) electric motors in the QUANT 48VOLT accelerate the electric sports car from zero to 100 km/h in 2.4 seconds and onwards with no loss of acceleration to a top speed of 300 km/h (electronically limited). The anticipated range is around 1,000 km - 25 percent more than that of the high-voltage version of the QUANT FE sports car.

The QUANT 48VOLT not only dispenses with the performance scepticism levelled at electric vehicles but also addresses the safety concerns surrounding them. With an electric drive that operates at low voltages across the board, the entire vehicle is inherently safe from an electrical standpoint. The way they are structured, the flow cell's poles can be touched with no risk to life or limb. In contrast to conventional lithium-ion battery systems, there is absolutely no danger of road users or first responders suffering an electric shock from a nanoFlowcell 48VOLT system, even in the event of a serious accident. Furthermore, the nanoFlowcell® electrolyte liquids are neither flammable nor explosive.

Standardisation for industrial-scale production of the low-voltage parts for a nanoFlowcell® 48VOLT electric car also offers substantial benefits - no expensive measures relating to high-voltage safety have to be met, leading to significant cost reductions in development, production and maintenance. The technical servicing of a nanoFlowcell® 48VOLT electric car can, for instance, be conducted by technicians without specialist high-voltage training.

The QUANT 48VOLT with nanoFlowcell® low-voltage drive is forward-looking electric mobility. The flow cell energy of the nanoFlowcell is not harmful either to health or the environment. In a low-voltage sports car like the QUANT 48VOLT, nanoFlowcell® 48VOLT technology demonstrates powerful performance and thus draws attention to what is currently the lightest, safest, most environmentally compatible and economical drive system there is for electric vehicles.

Further technical details on the world's most innovative electric sports car are published in the QUANT 48VOLT press kit.

nanoFlowcell Holdings Ltd will display its latest QUANT vehicles with nanoFlowcell® 48VOLT flow cell technology from 7-19 March at the 2017 Geneva Motor Show in hall 1, stand 1244.