Electric Cars miles per Charge
Prototype membranes developed by engineers at The Ohio State University to keep rechargeable batteries from catching fire, and to help them be more efficient. Photo by Pam Frost Gorder, courtesy of The Ohio State University.
COLUMBUS, Ohio—Researchers have designed a thin plastic membrane that stops rechargeable batteries from discharging when not in use and allows for rapid recharging.
The patent-pending technology controls how charge flows inside a battery, and was inspired by how living cell membranes transport proteins in the body. It could find applications in high powered “supercapacitors” for electric cars and even help prevent the kinds of fires that plagued some models of hoverboards recently.
In the journal Energy & Environmental Science, the Ohio State University engineers describe the “smart” membrane that they hope will enable the development of a new category of fast-charging and powerful batteries called “redox transistor batteries” for automobiles that will travel farther on a single charge.
Along the way, they analyzed the performance of the leading hybrid and electric car batteries, and discovered something that, to their knowledge, has never before been stated outright. The best eco-car makers appear to have hit a performance limit, and that limit is 0.4 miles—less than half a mile of driving—per minute of charging.
Put another way, today’s very best eco-friendly cars can travel around 200 miles after an 8-hour charge, while gas-powered cars can cover the same distance after only one minute spent at the pump. The researchers hope their new technology can boost electric car batteries to provide up to tens of miles per minute of charge.
“That’s still an order of magnitude away from the equivalent measure in gasoline, but it’s a place to start, ” said Vishnu-Baba Sundaresan, an assistant professor of mechanical and aerospace engineering at Ohio State and leader of the study.
Sundaresan said that today’s hybrid and electric cars are hitting the performance limit because of how charge is stored in conventional batteries. He also believes that his new membrane technology might be the only way to push past that limit until entirely a new category of battery electrodes are developed.
“Research over the last 50-plus years has focused on advancing the chemistry of battery electrodes to increase capacity, ” Sundaresan said. “We’ve done that, but the increase in capacity has come at the cost of robustness and the ability to rapidly charge and discharge batteries. Electric vehicle design is mature enough now that we know the limit they’re reaching is because of the chemistry of lithium-ion batteries.”
Sundaresan and doctoral student Travis Hery call their invention an “ionic redox transistor, ” and they’re using it to develop a new kind of battery in which energy is stored in a liquid electrolyte—which people can recharge or empty out and refill as they would refill a gas tank.
“For everyday commuting, the electrolyte can be simply regenerated by plugging it into a power outlet overnight or while parked at the garage. For long road trips, you could empty out the used electrolyte and refill the battery to get the kind of long driving range we are accustomed to with internal combustion engines, ” Sundaresan said.
“We believe that this flexibility presents a convincing case for weaning our dependence on internal combustion engines for transportation.”
Batteries such as lithium-ion batteries already have membrane separators that conduct charge and physically separate the anode and the cathode from each other, but even the best of these batteries lose charge over time. That’s because membranes can’t completely prevent charge from leaking between the anode and cathode, explained doctoral student Travis Hery. The internal chemical reactions are called self-discharge.
In the best-case scenario, self-discharge slowly converts some of the battery’s internal energy into heat—a gradual power drain. In the worst-case scenario, the leakage causes batteries to overheat and even catch fire, as recently happened with the popular lithium-ion-powered hoverboards and Boeing’s environmentally friendly Dreamliner fleet.
The phenomenon is called thermal runaway, and there are very few ways to shut it down once it starts. But Sundaresan and Hery believe their membrane, when used with a specially designed electronic control unit, can shut down charge transport and prevent thermal runaway at its onset.
The design is inspired by cell membranes in the body, which open and close to let cells perform biological functions. Openings in the cell wall respond to the electrical charge of molecules to expand or contract, and it’s this principle that the engineers applied to the smart membrane.How to smoke a chicken Tips on how to make your hair grow faster for boys what time does bmf come on Arcane straight how do you tricks How to win the boulder cup trainer tips what time does dave & buster's close what does the name dylan mean what does engagement mean How to calm inflamed intestines what does inclusive mean in math what does nt mean in valorant when your vigina itches what does that mean what does scrub the ground mean what does faqs mean what does cede mean what does br mean what does self insured mean How to cure sinus permanently How to multiply fractions with whole numbers? what does yellow ribbon mean How to stop thinking about something What the tips of your hair will look like from diferen angels with 3 color dyes what time does loki episodes come out what does bonus mean in basketball Tips on how to be good at the beep test How many hat tricks does wayne gretzky have How to analyze people with dark psychology? what does nigh mean How to temper chocolate what foods are high in zinc what does contingent mean real estate How to buy catgirl coin what does archaeologist mean How to study spanish tips for high school students what does inverted nipple mean what day of the week does edd deposit money what does ukg stand for the dark jeans backlash: what stylish guys are wearing instead:437 what does 1080p mean what does the name andrew mean Who to give holiday tips what does sel stand for How to separate what does entp mean In sumdog how do you get tricks How does david blaine do card tricks over the phone what does heh mean what does the cardiovascular system do How to get rid of soreness? What types of wing tips create vortices How to calm an upset stomach Why do bb guns not have orange tips How to see tips on vipkid How to get rid of e coli in urinary tract? How to train a jack russell puppy tricks step by step what does stupid mean what does trade mean what does redress mean What are two of the ten adults fire saftety tips offeredby the chicago fire department How to teach a puppy to do tricks How to lower blood sugar in minutes? How to carve a turkey? How to fold a fitted sheet? How do i clean out all the tricks coolant in my gm 3800 what does evening mean what does barbaric mean How to watch mayor of kingstown? How to upload photos to icloud How to sleep with neck pain? what does green and red make How to sponge ball tricks what does abs stand for in a car what does pnc bank stand for what does flex mean in fantasy football Where does one buy replacement tips for weller soldering gunhttps://www.facebook.com How do skateboard tricks work Which generation tips the most what does ferocious mean what does blinking red light mean How do magicians do their magic tricks What are tips nails How long to bake asparagus How to get more tips without losing my job How to find moon sign How to remove tips at home without acetone How to find tangent line what does overthink mean What tricks does the leprachaun like to play on kids who set a trap what does que mean in spanish what does dreaming of lions mean How to eat crab How to become a truck driver what does it mean when your heart flutters what does swordfish taste like How to pronounce jorge? How to measure pool cue tips Which celebrity knows magic tricks How to say beautiful in spanish what does to mean