Hybrid structure of LIC

A lithium ion capacitor (LIC) realizes performance that is compatible with both high-level and high-quality by using a hybrid structure using the same activated carbon as the electrical double layer capacitor for the positive electrode and the same carbon as the lithium ion battery for the negative electrode and pre-doping technology Did.

High capacitance by pre-doping and its principle

By pre-doping lithium ions from metallic lithium to the negative electrode, the potential of the negative electrode was lowered, enabling high cell voltage. At the same time, the positive electrode achieves higher capacity by adsorbing and desorbing anions at 3V or more and lithium ions at 3V or less.

Charging and discharging of LIC

Both high power density and high energy density are compatible

ULTIMO® uses activated carbon similar to the electrical double layer capacitor for the positive electrode and carbon material similar to the lithium ion battery for the negative electrode, but with its unique design pre-doping lithium ions, it achieves both high power density and energy density It is a next generation storage device.

Even if discharging with a large current of 480 A, high capacitance can be obtained.

Long life

ULTIMO® can be used at higher cell voltages than electrical double layer capacitors and has excellent high temperature durability. This is because the design is designed to suppress the increase in the positive electrode potential by lowering the negative electrode potential by pre-doping, and at the same time, the degradation of the negative electrode is also suppressed, so that high durability can be achieved even when the charge and discharge cycle is repeated I have it.

After 800 thousand cycles have elapsed, no noticeable deterioration is seen.

After 8,000 hours, no noticeable deterioration is seen

Excellent safety

In lithium ion batteries, metal oxides are used for the positive electrode, and if the cell temperature rises in the event of an abnormality, oxygen is released by thermal decomposition of the positive electrode, possibly causing a thermal runaway reaction. On the other hand, since ULTIMO® uses activated carbon for the positive electrode, there is a fever due to a short circuit at the time of abnormality, but there is no thermal runaway reaction and it has excellent safety.