LITHIUM ION CAPACITOR

摘要

The present invention relates to a lithium ion capacitor which includes electrolytic solutions containing 5 to 40 wt% of acetate solvents. According to the present invention, the diffusion speed of lithium ions is increased and the resistance of the lithium ion capacitor is reduced by including a preset amount of acetate solutions with carbonate electrolytic solvents which are used in a conventional method. Also, according to the present invention, provided is the lithium ion capacitor with an improved low temperature property by including the acetate solvents with a lower melting point as the electrolytic solvents.