Lithium-ion Batteries Using Peroxide Are 7 Times More Energy Dense

As the humanity is trying get oil independent, more and more studies are made on alternative energy sources. And since electricity is the best candidate to power everything, including our cars, better batteries are the most researched items now.
Charging EV 1 photo
While some want to reinvent the way batteries work (see carbon-carbon and green living batteries), others think that’s way too difficult to implement and are trying to improve the ones we use today.

We’ve seen that sand transformed into pure quartz can improve lithium-ion batteries performance about 3 times, but now a science team from the School of Engineering at the University of Tokyo discovered that adding peroxide can outscore that by two times at least.

The new technology uses the oxidation-reduction reaction between oxide ions and peroxide ions at the positive electrode. Peroxides are generated and dispersed due to charge and discharge by using a material made by adding Co (cobalt) to the crystal structure of Li2O (lithium oxide) for the positive electrode.

The team led by professor Noritaka Mizuno claims their battery prototype has an energy density of 2,570 Wh/kg (watt-hour per kilogram), just a bit under that new lithium-air battery returning 3,460 Wh/kg, but more stable and safer to use.

According to Nikkei Technology, repeatedly charging and discharging the peroxide battery created no unwanted products. Still, as with any new technology that’s still in the lab, further testing has to be done before your car will be powered by such things.


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