Lithium-air battery research success or will rewrite the history
[abstract] has overcome the technical difficulties in the development of lithium air batteries, renovation car batteries can be reduced to 1/5 of the existing battery cost and weight.
And the current prevalence of lithium ion in rechargeable battery technology, compared
to lithium air batteries can be theoretically more stored energy
A chemistry professor at Claire gray and her team recently to conquer the technical difficulties in the development of lithium air batteries.
According to the report, if we can put the technology from the laboratory demonstration goods into a commodity, then car only charge can sail from London to Edinburgh (650 km) apart, the cost and weight of the battery is used only 1/5 the electric car of the lithium ion battery used today.
Prof grey said: "our achievements make this technique is an important step forward, herald a new field of study. We are still not completely solve the problem of the inherent mechanism of the chemical, but our results do reveal way."
And the current prevalence of lithium ion in rechargeable battery technology, compared to lithium air batteries can store more energy in theory, so that the researchers across the globe have been carrying out a research into the lithium air batteries.
Published in the U.S.Science Magazine, according to a research paper on the team to overcome this kind of technology in Cambridge on the part of China's practical problems, especially the chemical instability problems.Previously, because the chemical is not stable, lithium air batteries will show performance decline rapidly.
The basic chemical principle is very simple lithium air batteries.The battery discharge was achieved by lithium combined with oxygen to
form lithium peroxide, and then by applying current reverse this process and complete charging.How to make the reaction occur repeatedly is the reliable technical challenges.Cambridge scientists do to related chemical process adjustment to improve its controllability.For example, they will be treated as lithium peroxide into more of lithium hydroxide, also added to the system iodide lithium, and graphene produced excellent permeability "fluffy" electrode.So-called graphene, university of Manchester is 12 years ago found a kind of carbon allotropes.
Cambridge, say researchers in the laboratory show battery system efficiency up to 90%, rechargeable 2000 times.But they said, may also need to at least 10 years of work to turn it into a battery that can be used for cars and grid cell battery business.Grid electric storage device for storing solar energy and wind farms intermittent power, so that when you need to use.
Professor gray said: "we obtained a patent for the technology, the intellectual property rights owned by Cambridge, Cambridge university commercial institutions industrial. We are working with several companies to promote the technology."