Researchers at the Massachusetts Institute of Technology have come one step closer to replacing the lithium-ion batteries that power phones, laptops and electric cars with a device that stores far more energy for the same weight.
The device is known as a lithium-air or lithium-oxygen battery. Charged lithium atoms react with the oxygen from air flowing through the apparatus, forming lithium peroxide, and deposit on the structure. The peroxide can then be broken down to release electricity.
In a paper published in the journal Energy & Environmental Science, a team of materials scientists and mechanical engineers refined this design and made it hold almost four times the electricity of a lithium-ion battery by weight.
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