Introducing The Next Evolution of Energy Storage
The Lithium-ion Capacitor
The Lithium-ion Capacitor is a hybrid electrochemical capacitor that combines the energy density and low leakage current of a battery with the rapid charge-discharge rate and extended cycle life of a supercapacitor. This next-generation capacitor offers a combination of high energy storage capacity and high power capability, bridging the gap between the traditional roles of batteries and capacitors.
General Capacitor, abbrev. GC, is introducing a patented Li-ion Capacitor (LiC) that features the highest energy density of any capacitor on the commercial market. The GC LiC has an operating voltage of 3.8 to 2.2V and provides 3-4 times more energy density than conventional supercapacitors- also known as electric double-layer capacitors, or EDLCs. The prototype 3000 Farad (F) capacitance Li-ion capacitor laminate pouch cell contains 18 Watthours per kilogram of specific energy, compared to only 6-7 Wh/kg from the industry-leading 3000 F capacitance EDLC-type cylindrical cell.
GC has developed 200F & 3000F capacitance prototype LiC laminate cells and can create customized LiCs as well.
The GC 3000F LiC contains 18 Watthours per kg of specific energy density and 30 Wh/L of volumetric energy density. This product is designed to deliver pulsed power- it's capable of 8 Kilowatts per kg of power density and a maximum charge current of 150 A. It has a lifetime of over 100,000 cycles.
GC LiCs can operate in a temperature range of -40° to 65° C, are environmentally-friendly, and do not suffer from dangerous hazards like thermal runaway reactions inherent in lithium-ion batteries.
Li-ion Capacitor Features
Excellent Cycling Efficiency
The GC 200F Li-ion Capacitor has demonstrated cycle life of 300,000 cycles while retaining over 80% of initial capacitance. In comparison, most rechargeable batteries are only capable of around 1000 charge cycles within that threshold.
The superior charging-efficiency and cycling performance of LiCs is well-suited for hybrid energy storage systems. These systems combine batteries with capacitors that enhance and smooth power output and help protect batteries from transient loads. This greatly improves performance, efficiency, and lifetime for the entire system.
Wide Temperature Range
GC Li-ion Capacitors are tested for reliability in extreme temperatures to simulate all possible applications. For example, LiCs are tested in heat up to 65° C to simulate conditions near electric vehicle engines and on wind and solar farms. On the other end of the spectrum, LiCs are tested in freezing temperatures down to -40° C to simulate arctic and space environments- like those experienced by satellites in low Earth orbit.
LiC technology is inherently safer to use than lithium-ion batteries. Li-ion capacitors do not undergo volatile chemical reactions like those in lithium-ion batteries, which can cause dangerous thermal runaway reactions. LiCs also contain much less lithium and electrolyte compared to Li-ion batteries. LiCs are safe, reliable, non-toxic, and aren't as heavily regulated as lithium-ion batteries with regards to safety and transportation.
Li-ion Capacitor Tech