General Capacitor (GC) is a developer and manufacturer of high-performance electrochemical capacitors, specifically Lithium-ion Capacitors and related hybrid capacitors. GC Li-ion Capacitors provide a combination of high power, superior energy density, and extended cycle life for various energy storage and power source applications in electronics.
GC is introducing a patented 3.8V Li-ion Capacitor (LIC) featuring the rapid charge-discharge rate, pulsed power capability, and cycling performance of an electric double-layer capacitor, complemented by the low self-discharge and higher maximum voltage of a Li-ion battery. The GC LIC has the highest energy density of any supercapacitor currently available on the commercial market.
The GC LIC has an operating voltage range of 3.8 to 2.2V and can operate within a recommended cell surface temperature range of -40° to 65° C.
Models include the LIC 200F, 1100F, and 3000F (Farad) laminate cell.
The LIC 3000 Farad laminate cell is capable of 18 Wh/kg of specific energy density, 7.5 kW/kg of power density, and greater than 100,000 cycles of rated cycle life.
LIC products are safer to use than lithium batteries because they contain less electrolyte and do not trigger thermal runaway reactions. All GC products are are composed of environmentally-friendly materials and are made and tested in the USA.
Higher Voltage and Energy Density
The LIC is composed of activated carbon cathodes similar to those in electric double-layer capacitors and graphitic anodes similar to those in Li-ion batteries. Anodes are pre-doped with lithium, which lowers charge potential and results in a higher overall cell voltage. This provides a maximum voltage of 3.8V and an energy density that is 3 to 4 times higher than conventional 2.7V supercapacitors.
Rapid Charging and High Power Function
LICs can fully discharge in seconds to deliver pulsed power. The GC LIC3000F can supply 1900 Watts, equivalent to 500 Amps current, in 3.5 seconds. Recommended maximum charging current is 150 A, which charges the cell in about 30 seconds.
As shown in the Ragone plot, LICs rival the energy density of lead-acid batteries and have similar power density to electric double-layer capacitors (ultracapacitors).
LICs push the limits of the frontier where energy and power converge.
Excellent Cycle Life
GC LICs can perform well over 100,000 charge-discharge cycles while retaining at least 85% of initial capacitance. Comparable rechargeable batteries, such as lithium-ion and lead-acid type batteries, are only capable of approximately 500 charge cycles by that standard.
The GC LIC has an average 5% loss of voltage from maximum charge over a three month period. Supercapacitors typically suffer from a 30-50% voltage loss from maximum charge after only one month.
Wide Temperature Range
GC LICs are tested under extreme temperature conditions to simulate all possible applications. Testing includes temperatures of up to 65° C to simulate HEV engine heat and wind/solar power farms, to freezing temperatures of -30° to -40° C to simulate arctic and aerospace environments.
LIC technology is inherently safer to use than lithium-ion batteries because LIC cells contain much less electrolyte per cell and do not use lithium metal oxide electrodes that can trigger thermal runaway reactions.
LICs aren't as strictly regulated as lithium-ion batteries during shipping and transportation, and are manufactured using only environmentally-friendly methods and materials.