General Capacitor is a clean tech company focused on the development of lithium-ion ultracapacitors for pulsed power and rapid energy storage
The Lithium-Ion Capacitor, or LIC, is a novel ultracapacitor-type energy storage device that is valued for its high voltage, rapid rate of charge-discharge and extended cycle life.
General Capacitor LLC is introducing a patented LIC featuring high power density and a wide operating temperature range that has a maximum voltage of 3.8 V and three to four times the energy density of conventional ultracapacitors.
The General Capacitor LIC 3000 Farad ultracapacitor can achieve an energy density of 32 Wh/L and 8.5 kW/kg of specific power. The LIC has an operating voltage of 3.8 to 2.2 V and a lifetime of over 100,000 discharge cycles. The GC LIC is capable of operating in a temperature range of -40° to 65° C and does not face many of the safety risks inherent with lithium-ion batteries.
The GC LIC is also available in a 200 F cell.
Higher Voltage of 3.8 V
The LIC has a higher max voltage of 3.8 V compared to 2.7 V in EDLCs.
Increased Energy and Power Density
The GC LIC 3000F cell can currently achieve an energy density of 32 Wh/L, a specific energy of 18 Wh/kg and 8.5 kW/kg of specific power. This is a marked improvement over conventional ultracapacitors, which are typically only capable of 5-7 Wh/kg of specific energy.
Long Cycle Life of over 100,000 cycles
LICs are capable of performing over 100,000 discharge cycles without dropping below 80% of initial capacitance. This equates to many more years, and even decades, of operation for end users. The cycle life efficiency of LICs is also optimal for battery-ultracapacitor hybrid power systems: in which an LIC unit will supply pulsed power during peak power demand, which prevents the battery from having to perform deep discharges- and substantially increases the overall lifetime of the system.
Wide Operational Temperature Range
GC LICs are tested for reliability under extreme temperatures to simulate all its possible applications. For example, LICs are tested in temperatures of 65° C to simulate the scorching environment of the desert and solar grids to -40° C in order to recreate the freezing temps satellites experience in low earth orbit.
Safer than Lithium Batteries
LIC technology is inherently much safer than that of lithium batteries, in which electrical thermal runaway reactions can occur that cause overheating and explosion. The LIC, like other ultracapacitors, utilize principles of electrostatic charge as opposed to chemical reactions. Therefore LICs contain much less lithium and electrolyte compared to batteries. LIC cells can be bent and even punctured without causing flammability hazards. Furthermore, LICs do not have any major restrictions on shipping.
Li-ion Capacitor Technology