Cathode active material for a lithium ion capacitor, and method for producing the cathode active material

摘要

The present invention relates to a lithium ion capacitor having excellent capacitance characteristics and high energy density. More particularly, the present invention relates to a cathode active material for a lithium ion capacitor, which utilizes a lithium composite metal oxide having a large initial irreversible capacitance as a specific cathode additive in addition to a carbon-based material applied as a cathode active material, and a production method thereof, and a lithium ion capacitor including the same.;According to the present invention, lithium can be electrochemically doped on an anode without using metal lithium, and the capacitance characteristics of a lithium ion capacitor and the safety of a lithium-doping process can be significantly improved.

主权项

1. A cathode active material for a lithium ion capacitor, comprising a lithium composite metal oxide represented by the following Chemical Formula 1 and a carbon-based material:
LixMyOz  [Chemical Formula 1] wherein x, y, and z are 0