Future EV batteries to charge rapidly, reduce range anxiety

Future EV batteries recharge quickly and reduce range anxiety

In this news, we discuss the Future EV batteries to charge rapidly, reduce range anxiety.

People who drive an electric car are afraid of running out of battery when the charge is low. Range anxiety, the fear of running out of power before you can charge an electric vehicle, could soon be a thing of the past.

A team of engineers from Penn State are studying lithium iron phosphate batteries that have a range of 250 miles with the ability to recharge in 10 minutes.

“We have developed a battery that is smart enough for consumer electric vehicles with cost parity with combustion engine vehicles,” said Chao-Yang Wang, William E. Diefenderfer Chair in Mechanical Engineering, Professor of Engineering chemical and professor of materials science and engineering director of the center for electrochemical motors at Penn State. “There is no longer the worry of range and this battery is affordable.”

The researchers also say that the battery should be good for 2 million kilometers in its lifetime.

They report in Nature Energy that the key to long life and fast charging is the battery’s ability to quickly heat up to 140 degrees Fahrenheit, for charging and discharging, and then cool down when the battery is charged. battery does not work.

“Very fast charging allows us to reduce the size of the battery without causing range anxiety,” Wang said.

The battery uses a self-warming approach developed previously in Wang’s center. The self-heating battery uses a thin sheet of nickel with one end attached to the negative terminal and the other extending outside the cell to create a third terminal. Once the electrons flow, it quickly heats the nickel foil through resistance heating and heats up the inside of the battery. Once the internal temperature of the battery is 140 degrees F, the switch opens and the battery is ready for a quick charge or discharge.

Wang’s team modeled this battery using existing technologies and innovative approaches. They suggest that by using this self-heating method, they can use inexpensive materials for the battery cathode and anode and a safe low-voltage electrolyte. The cathode is thermally stable lithium iron phosphate, which does not contain any of the expensive and critical materials like cobalt. The anode is made of super coarse particle graphite, which is safe, light and inexpensive.

Due to self-heating, the researchers said they didn’t have to worry about uneven lithium deposition on the anode, which can cause dangerous lithium spikes.

“This battery has reduced weight, bulk and cost,” Wang said. “I am very happy that we have finally found a battery that will benefit the general public.”

According to Wang, these small batteries can produce a large amount of energy by heating – 40 kilowatt hours and 300 kilowatts of power. An electric vehicle with that battery could go from zero to 60 miles per hour in 3 seconds and ride like a Porsche, he said.

“This is how we are going to change the environment and not just contribute to luxury cars,” Wang said. “Let everyone afford electric vehicles.”

News Highlights:

Future EV batteries recharge quickly and reduce range anxiety

The cheap battery should be good for 2 million kilometers in its lifetime

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