Battery breakthrough at Cambridge Uni.

Researchers have developed a lab version of a lithium-air battery, with an energy density approaching that of petrol (gasoline). Any chemists here care to comment on what they've seemingly achieved?

Science Daily.

Quote:

Scientists have developed a working laboratory demonstrator of a lithium-oxygen battery which has very high energy density, is more than 90% efficient, and, to date, can be recharged more than 2000 times, showing how several of the problems holding back the development of these devices could be solved. Lithium-oxygen, or lithium-air, batteries have been touted as the 'ultimate' battery due to their theoretical energy density, which is ten times that of a lithium-ion battery

via International Skeptics Forum http://ift.tt/1WI8czq