REDT - PoweringNow.com

ENIFY vanadium redox batteries from RedT have the potential to solve the two major obstacles to the widespread adoption of electric vehicles: excessive down time for recharging, and short-lived, high-cost batteries.

Thanks to our patented Electric Vehicle Refuelling System (EVRS), an electric vehicle powered by an ENIFY vanadium redox battery can be rapidly recharged by removing the spent electrolyte and simultaneously replacing it with charged electrolyte. It’s just like refilling a diesel vehicle, except that a four-way sealed nozzle system is used to extract spent electrolyte and introduce fully charged electrolyte at the same time. There are some differences compared to diesel – the fuel is not flammable or hazardous to handle, it is not burned and does not give off harmful emissions, and it is continuously reusable once it has been recharged.

The lack of a refueling infrastructure, combined with the relatively low energy density of vanadium redox batteries (up to 35 Wh per litre, compared to 100 Wh per litre for lithium-ion batteries) makes them currently impractical as a means of powering long-distance electric vehicles. However, our EVRS system combined with our ENIFY batteries is ideal for electric vehicles such as city buses and delivery vehicles, which operate within a relatively small area, have short journey times, and return frequently to base.

In these situations, vehicles powered by vanadium redox batteries offer two significant advantages over vehicles powered by lithium-ion batteries:

• They can be refuelled rapidly (in around five minutes, typically), making them more practical for “workhorse” situations where they are in use for up to 18 hours per day.
• They have lower operating costs per kilometre. The fuel is untaxed and the batteries are infinitely reusable.

Of course, electric vehicles powered by a vanadium redox battery can also be charged directly from solar, wind, or off-peak grid energy.