Technology
A
research group of National Institute of Advanced Industrial Science and
Technology (AIST) developed a battery that integrates lithium ion capacitor andlithium air battery that is expected to be the next-generation large capacity secondary
battery. The research group developed a lithium air battery that used hybrid
electrolyte made up of hydrogen and organic electrolyte two years ago. The
latest battery is an integrated battery with a maximum output of 120 milliwatts
per square centimeter, six times higher capacity exhibited by the lithium air
battery developed two years ago. The research members told that it would be
necessary to improve the solid electrolyte to be sandwiched between hydrogen
and organic electrolyte before the newly developed integrated battery is turned
into actual utilization. They plan to improve the new products for the
application of EVs.
It works
as a lithium air battery in normal times, and the lithium ion capacitor mode
starts automatically when more output is required. The lithium air battery
enjoys great expectations as the next-generation secondary battery, but it has
not been put into practical use because of the problems with output density and
charge-discharge characteristics. The lithium ion capacitor is already in practical
use, but it has a small capacity to store energy despite the high output
density. Mitsubishi Electric successfully developed a battery that integrates
lithium ion battery and lithium ion capacitor.
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