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Japan is developing a new type of lithium battery with sulfur electrodes, which can increase the battery capacity by 4 to 5 times
.
If this technology can be applied to lithium-ion batteries, it is expected to significantly reduce the frequency of charging portable terminals such as smartphones
.
Lithium batteries are repeatedly charged and discharged
by lithium ions moving back and forth between the positive and negative electrodes through the electrolyte.
The cathode is made of lithium cobalt oxide, including rare metals
.
Sulfur has the property of storing a large amount of electricity and is suitable for use as an electrode material
for lithium batteries.
At the same time, it is not a rare resource
.
Research is underway
to process sulfur into microparticles and use it for cathodes based on increasing surface area.
However, there was a problem before, that is, if repeatedly charged and discharged, sulfur would dissolve in the electrolyte, reducing the performance of
the battery.
Hikari Ebe, senior director researcher of the Japan Industrial Research Institute, and others have developed a technology
to strongly combine the metal used in the cathode with the sulfur microparticles.
The technique is to make a powder from metals such as iron and titanium with sulfur, which is mixed
with small balls made of ceramics.
With the impact of the balls colliding with each other, the metal atoms and sulfur can be tightly bonded
.
1 metal atom can be combined
with 4~6 sulfur microparticles.
Ebe Bishari and others used this material for the cathode and developed a new lithium battery
.
The battery capacity can reach 3~5 times
that of conventional lithium-ion batteries.
Although the voltage is only half, it is possible to increase the voltage by working the
circuit structure and so on.
It is reported that the developer will cooperate with battery companies to trial produce large-size batteries for mobile phones in fiscal 2015 to confirm their practicality
.
Japan is developing a new type of lithium battery with sulfur electrodes, which can increase the battery capacity by 4 to 5 times
.
If this technology can be applied to lithium-ion batteries, it is expected to significantly reduce the frequency of charging portable terminals such as smartphones
.
Lithium batteries are repeatedly charged and discharged
by lithium ions moving back and forth between the positive and negative electrodes through the electrolyte.
The cathode is made of lithium cobalt oxide, including rare metals
.
Sulfur has the property of storing a large amount of electricity and is suitable for use as an electrode material
for lithium batteries.
At the same time, it is not a rare resource
.
Research is underway
to process sulfur into microparticles and use it for cathodes based on increasing surface area.
However, there was a problem before, that is, if repeatedly charged and discharged, sulfur would dissolve in the electrolyte, reducing the performance of
the battery.
Hikari Ebe, senior director researcher of the Japan Industrial Research Institute, and others have developed a technology
to strongly combine the metal used in the cathode with the sulfur microparticles.
The technique is to make a powder from metals such as iron and titanium with sulfur, which is mixed
with small balls made of ceramics.
With the impact of the balls colliding with each other, the metal atoms and sulfur can be tightly bonded
.
1 metal atom can be combined
with 4~6 sulfur microparticles.
Ebe Bishari and others used this material for the cathode and developed a new lithium battery
.
The battery capacity can reach 3~5 times
that of conventional lithium-ion batteries.
Although the voltage is only half, it is possible to increase the voltage by working the
circuit structure and so on.
It is reported that the developer will cooperate with battery companies to trial produce large-size batteries for mobile phones in fiscal 2015 to confirm their practicality
.
