Technology:
Sharp and Isao Tanaka of Kyoto University developed a
lithium-ion battery usable for as long as 70 years. In the experiment, the new
battery allows 25,000 times of discharge and charge. That is, it is usable for
70 years if it is discharged and charged on a daily basis. The existing
lithium-ion battery is usable for 10 years at the longest. The researchers plan to make it
practicable as the battery for wind and photovoltaic generation. The trial
product is 8 cm square. They optimized the combination of materials of the
positive electrode, such as ion and silicon, with the help of computer and the
latest simulation technology.
They confirmed the usability by conducting 10,000 times
of discharge and charge and analyzed that it is usable for six times longer
than the existing lithium-ion battery. The research results were published in
the electronic version of the British science magazine “Nature Communications.”
Brilliant Japanese researchers make a breakthrough
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