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According to British media reports, chemistry professor Claire Gray and her team recently overcame the technical difficulties in the development of
lithium-air batteries.
If the technology can be transformed from a demonstration in the lab to a commodity, the car can drive from London to Edinburgh (about 650 kilometers apart) on a single charge, using only 1/5
the cost and weight of the lithium-ion batteries used in today's electric vehicles.
Professor Gray said: "Our achievements represent an important step forward for this technology and herald entirely new areas of research
.
We still haven't fully addressed the problems inherent in this chemistry, but our results do shed light on the way
forward.
”
Compared with the lithium-ion technology prevalent in current rechargeable batteries, lithium-air batteries can theoretically store much more energy, so much so that researchers around the world are conducting research
on lithium-air batteries.
According to a research paper published in the American journal Science, the Cambridge team tackled some of the practical problems of the technique — especially the chemical instability
.
Previously, due to this chemical instability, lithium-air batteries would show rapid deterioration in performance
.
The basic chemistry of lithium-air batteries is very simple
.
This battery is discharged by combining lithium and oxygen to form lithium peroxide, and then recharging
by applying an electric current to reverse this process.
How to reliably make these reactions happen repeatedly is the challenge for this technology
.
Cambridge scientists have adapted the chemical process to make it more controllable
.
For example, they converted lithium peroxide to more accessible lithium hydroxide, added lithium iodide to the system, and made "fluffy" electrodes
with excellent permeability from graphene.
The so-called graphene is an allotrope of carbon discovered by the University of Manchester 12 years ago
.
According to the researchers, the battery system demonstrated in the Cambridge laboratory is 90% efficient and can be recharged 2,000 times
.
However, they say it may take at least another 10 years of work to turn the lithium-air battery into a commercial battery
that can be used for car and grid storage.
Grid storage is used to store electricity from solar and wind power plants intermittently for use
when needed.
According to British media reports, chemistry professor Claire Gray and her team recently overcame the technical difficulties in the development of
lithium-air batteries.
If the technology can be transformed from a demonstration in the lab to a commodity, the car can drive from London to Edinburgh (about 650 kilometers apart) on a single charge, using only 1/5
the cost and weight of the lithium-ion batteries used in today's electric vehicles.
Professor Gray said: "Our achievements represent an important step forward for this technology and herald entirely new areas of research
.
We still haven't fully addressed the problems inherent in this chemistry, but our results do shed light on the way
forward.
”
Compared with the lithium-ion technology prevalent in current rechargeable batteries, lithium-air batteries can theoretically store much more energy, so much so that researchers around the world are conducting research
on lithium-air batteries.
According to a research paper published in the American journal Science, the Cambridge team tackled some of the practical problems of the technique — especially the chemical instability
.
Previously, due to this chemical instability, lithium-air batteries would show rapid deterioration in performance
.
The basic chemistry of lithium-air batteries is very simple
.
This battery is discharged by combining lithium and oxygen to form lithium peroxide, and then recharging
by applying an electric current to reverse this process.
How to reliably make these reactions happen repeatedly is the challenge for this technology
.
Cambridge scientists have adapted the chemical process to make it more controllable
.
For example, they converted lithium peroxide to more accessible lithium hydroxide, added lithium iodide to the system, and made "fluffy" electrodes
with excellent permeability from graphene.
The so-called graphene is an allotrope of carbon discovered by the University of Manchester 12 years ago
.
According to the researchers, the battery system demonstrated in the Cambridge laboratory is 90% efficient and can be recharged 2,000 times
.
However, they say it may take at least another 10 years of work to turn the lithium-air battery into a commercial battery
that can be used for car and grid storage.
Grid storage is used to store electricity from solar and wind power plants intermittently for use
when needed.
