Lithium-oxygen batteries are getting an energy boost - li ion battery cell
A new type of lithium
The oxygen battery is better than its predecessor. Lithium-
Oxygen batteries with more energy
More dense than typical lithium, made of more sustainable materials
Ion cells are (). But lithium-
Oxygen batteries are not widely used yet because they die too fast.
By adjusting the building materials, researchers have now built a lithium-
It can release nearly 100% of the oxygen batteries that store power and charge at least 150 times.
This battery was described in August.
One day it will become a more reliable energy source.
Dense power supply for electric vehicles or other electronic products. Lithium-
The oxygen cell consists of two electrodes, the anode and the cathode, separated by a substance called electrolyte.
When the battery supplies power to another device, the oxygen molecules on the cathode combine with lithium ions from the electrolyte to form a solid compound called peroxide lithium.
Chemical reactions release energy.
Charging the battery breaks down the peroxide lithium, bringing oxygen and lithium back to their starting position.
However, forging lithium peroxide will produce several unwanted chemicals.
Products that waste energy.
So lithium-
The oxygen battery may only provide about 80% of the storage charge to the device it supplies.
These nasty chemicals can also damage the electrolyte and cathode of the battery, so the battery often fails after dozens of charges, says Larry Curtis, who is sick Lemmon Agon
He was not involved in the work.
Better Lithium-
Linda Nazar, a chemist at the University of Waterloo, Canada, and his colleagues replaced the typical organic electrolyte and standard carbon of Inorganic Molten salt with oxygen batteries
Cathode based on metalbased one.
In this new battery, oxygen and lithium are combined to produce lithium oxide.
This chemical reaction can store more than 50% of the energy than the lithium reaction.
So the new design can make more energy
More dense battery than previous settings.
More importantly, lithium oxide does not create troublesome chemicals.
Products of lithium peroxide.
This makes the new lithium
Oxygen batteries release almost all stored charges onto other devices and charge more than other lithiumoxygen cells.
Curtiss said the new batteries could eventually be used to power electric cars, but there is still a way to go before they are actually used in cars.
This is because the new battery has to be heated to at least 150 degrees Celsius to work.
"You have to find some way to heat the car when you start it," he said . ".
Yang Shao said that changing the substances used in the battery electrolyte may reduce the operating temperature of the battery.
Horne, an energy and materials researcher at the Massachusetts Institute of Technology, also appeared on the same issue. Such lithium-
Oxygen batteries can also be used as small power supplies for airplanes, spaceships and submarines, she said.