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Lithium-oxygen battery holds more energy per unit of weight and costs less to produce than Li-ion.

Image source: University of Cambridge
Researchers at the University of Cambridge conducted a laboratory demonstration of lithium-oxygen batteries, which have energy density 10 times greater than their typical Li-ion counterparts used in electric vehicles today, Mashable reported. This energy density rivals that of gasoline, according to the study published in Science, making the batteries ideal for powering cars. Do not expect Tesla to announce a lithium-oxygen battery-powered car anytime soon, though. The researchers predict the technology will not be ready for production for another decade.
Still, 10 years is not a particularly long time to wait for a transformative technology.
Lithium-oxygen batteries have an energy efficiency of 93.2 percent, while most Li-ion units are less than 90 percent. The former can be recharged about 2,000 times. These new batteries are also supposedly five times less costly to produce than the traditional Li-ion ones.
If the promises of the new chemistry hold up, it could change the market for EVs and, as the technology progresses, that of mobile devices as well.
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