scientists announce progress toward better battery to power cars

Will Dunham Washington (Reuters)-
Scientists have created a battery that, in principle, can power electric cars and other energy sources --
Better hunger equipment than the current lithium
But there are still a few years from commercial use.
On Thursday, researchers at the University of Cambridge announced the establishment of a laboratory demonstration model of lithium.
Oxygen batteries that overcome many obstacles to the development of this technology.
The energy density of the battery is very high and the efficiency is about 93%, they said.
Better than previous efforts.
And can charge more than 2,000 times.
Claire Gray, a Cambridge professor of materials chemistry who led the study, said it was \"a step towards a practical battery, although there are many obstacles ahead.
\"The researchers said that to achieve a practical lithium --
The oxygen battery is ready, in part because of the low charging and discharging capacity of the battery.
In the car, the range of compact, fully charged batteries cannot reach the range of gasoline-filled in the ordinary engine because of the current lithium-
The ion battery does not pack that kind of power punch. The lithium-
The first ion rechargeable battery launched in 1991 powered the portable electronics revolution, including laptops and smartphones, and powered some vehicles. Lithium-
Oxygen Battery also known as lithium
Air Battery, due to high energy density, it is possible to provide the required power
A measure of energy stored for a given weight-
This is probably 10 times the amount of lithium.
Ion batteries and batteries close to gasoline.
They could also be the fifth of the cost, the fifth of the lithium weightion batteries.
But the problem with lithium has been bothering us.
Oxygen batteries that affect capacity and longevity, including trouble efficiency, performance, chemical reactions and safety hazards, and restrictions on the need for pure oxygen rather than ordinary old air.
Cambridge demo battery uses chemicals that are different from previous work on lithium
For example, an air battery that uses hydrogen oxide instead of peroxide lithium.
It also uses electrodes made of graphene, a form of carbon.
The result is a more stable and efficient battery.
Gray says it\'s too early to measure lithium.
The range of oxygen batteries for vehicles is limited.
Gray said that the intellectual property rights of the study were owned by Cambridge Enterprises, the commercial department of Cambridge University, and were patented.
The study was published in the journal Science. (
Will Denham reports)