Lithium-ion capacitor boasts high energy density

Taiyo Yuden Inc.'s  new Cylindrical Lithium Ion Capacitor (LIC) offers very large energy capacitance and high reliability. Combining the strength of lithium-ion secondary batteries with conventional Electric Dual Layer Capacitors (EDLCs), this new energy device offers an energy density four to 10 times greater than EDLCs.

The new hybrid LIC boasts the key features of batteries (high voltage and high energy) while maintaining the traditional characteristics of capacitors (rapid charge/discharge, high durability, safety, and environmental friendliness). The LIC can be used as a standalone power source or as a load charge leveling device to increase the life of the main power source such as a dry battery or lithium primary battery.

These LICs provide an increased maximum rated voltage of 3.8 V — about 1.5 times higher than the 2.3 to 2.7 V of conventional capacitors. Taiyo Yuden’s "Lithium Pre-Dope" technology is the key to this new device. Lithium pre-doping stores lithium ions at the anode in advance, and enables energy to be used more efficiently and cycle life to be increased.

The LIC is designed for use as a storage power source along with solar cells, fuel cells, generators, and other applications taking advantage of the LIC’s rapid discharge, long life compared with conventional EDLC capacitors, and maintenance-free properties. It is also used as the main power source for small devices, including toys, measuring equipment, and machine tools. The new LIC is available in three capacitances: 40, 100, and 200 F. Operating temperatures range from -25º to 60º C. Environmentally friendly, the LIC does not contain heavy metals such as Cd, Hg, or Pb.

For more information, contact TAIYO YUDEN (U.S.A.) INC., 1930 Thoreau Dr., Suite 190, Schaumburg, IL 60173. Phone: (847) 925-0888.