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'Instantly Rechargeable' Battery Could Change the Future of Electric Cars (sciencedaily.com)
An anonymous reader quotes a report from Science Daily: A technology developed by Purdue researchers could provide an "instantly rechargeable" method that is safe, affordable and environmentally friendly for recharging electric and hybrid vehicle batteries through a quick and easy process similar to refueling a car at a gas station. John Cushman, Purdue University distinguished professor of earth, atmospheric and planetary science and a professor of mathematics, presented the research findings "Redox reactions in immiscible-fluids in porous media -- membraneless battery applications" at the recent International Society for Porous Media 9th International Conference in Rotterdam, Netherlands. Cushman co-founded Ifbattery LLC (IF-battery) to further develop and commercialize the technology. "Designing and building enough of these recharging stations requires massive infrastructure development, which means the energy distribution and storage system is being rebuilt at tremendous cost to accommodate the need for continual local battery recharge," said Eric Nauman, co-founder of Ifbattery and a Purdue professor of mechanical engineering, basic medical sciences and biomedical engineering. "Ifbattery is developing an energy storage system that would enable drivers to fill up their electric or hybrid vehicles with fluid electrolytes to re-energize spent battery fluids much like refueling their gas tanks." Mike Mueterthies, Purdue doctoral teaching and research assistant in physics and the third co-founder of Ifbattery, said the flow battery system makes the Ifbattery system unique. "Other flow batteries exist, but we are the first to remove membranes which reduces costs and extends battery life," Mueterthies said. Ifbattery's membrane-free battery demonstrates other benefits as well. "Membrane fouling can limit the number of recharge cycles and is a known contributor to many battery fires," Cushman said. "Ifbattery's components are safe enough to be stored in a family home, are stable enough to meet major production and distribution requirements and are cost effective." For the visual learners, Purdue Research Park has uploaded a video about Ifbattery's "instantly rechargeable" method.
If it takes 5 minutes to fill a 75 liter (20 gallon) gas tank then what will it take to fill (charge) an empty 100KWh battery in the same time? Looks like you'll need a 2500A @ 480v setup or go high voltage 24KV @ 50A changing connection. For just one car you have megawatts of in-rush current. What type of protective equipment do you need to wear to use that? Rather than supercharger you now need a megacharger. If you have a charging (filling) station for multiple cars how can the grid support that? Instead of large underground fuel tanks at corner filling stations, you'll need huge underground "batteries" that will charge all night long so there is on-site extreme capacity storage that can charge all the "little" 100KWh batteries. I guess we need the batteries first and then you can figure out how to charge a large battery.