FAQ Hybrid Lithium ion Battery Capacitor H-LIBC Supercapacitor supercapbattery Supercapacitors super capacitor battery Ultracapacitor spel graphene

Hybrid Lithium-ion Battery Capacitor

What is Hybrid Lithium-ion Battery Capacitor..?

Hybrid lithium-ion Battery Capacitor (H-LIBC) is further hybridization of Lithin Ion Capacitor (LIC) and Lithium-Ion Battery (LIB). it is a recent innovation in the area of electrochemical energy storage that further hybridizes lithium-ion Capacitor. In Lithium Ion Capacitor one of it's electrode (Cathode) is from EDLC family, and Anode is of Lithium-Ion battery, to further hybridize LIC the Cathode from LIC which is from EDLC family is composited with LIBs cathode active material in pre-defined proportion, This effective combination of two different energy storage technologies combines the best features of LICs and Li-ion batteries and resultant product is Hybrid Lithium-Ion Supercapacitors with energy density almost 2 times of LIC along with low self-discharge characteristic, and higher durability (more charge-discharge cycles) than a Li-ion battery, without the potential for dangerous thermal runaway.

what is H-LIBC — **Lithium-ion Battery Capacitor overview**

Ihe positive electrode as seen in above pic is made of activated carbon + some predefined percentage Lithium Active material of positive electrode, the negative electrode is of graphite pre-doped with lithium ions, this is immersed in a liquid electrolyte (similar to the Li-ion salt solution used in LIBs). A separator prevents direct electrical contact between these two electrodes. Pre-doping the negative electrode with lithium ions reduces its electrical potential resulting in higher output voltage of 3.8 Volts.

The overall combination results into Hybrid Lithium-ion Battery Capacitor with Energy density thrice as high as LIC.(depending on percentage of hybridization)

What is Energy Density & Power Density of SPEL Hybrid Lithium-Ion Battery Capacitors..?

Hybrid/Composite positive Electrode of H-LIBC is responsible for increase in storage capacity and further controlled Pre-doping of negative electrode with lithium ions reduces the electrical potential of negative electrode which results in higher output differential potentional of 3.8 Volts in LIC, and this combination results in further increase in energy density.

SPEL Hybrid Li-ion Supercapacitors are available with Energy Density up to 65Wh per Kg.

Typical Power Density of SPEL Hybrid Lithium-ion Battery Capacitor is : 4 to 6.5kW per kg depending on percentage of hybridization.

Does Hybrid Lithium-ion Battery Capacitor requires BMS..?

Unlike Lithium-Ion Batteries H-LIBC's power management system is very much simplified. LICs single cell voltage range is 2.2 Volts to 3.8 Volts, so in case of H-LIBCs Voltage needs to be monitered for limiting the minimum and maximum limits. Even the charger for H-LIBCs are simplified and cost effective.

Are Hybrid Lithium-ion Battery Capacitors Safe..?

Hybrid Lithium-Ion Battery Capacitors (H-LIBC) are comparitively safer than batteries. In case of abuse like tests like Overcharge, External Short circuit, Nail penetration, and Crushing, it is observed that the high specific surface area of H-LIBCs electrode enhances the thermal and chemical stability with reduced thermal runaway and fire effect. Therefore, Lithium-ion Battery capacitor is very less flammable as compared to batteries.

H-LIBC is a promising electrochemical energy storage device for applications in Electric Mobility and other demanding applications of High-Current, medium Energy-Density with Fast-Charging and Saftey.

Can Hybrid Lithium-ion Battery Capacitors replace battery..?

Yes
As the useable energy density of Hybrid Lithium-ion Battery Capacitor exceeds that of flooded Lead Acid Battery, and can be directly compared with Lithium Titanium Oxide (LTO) Batteries. H-LIBC can potentially replace some of critical applications where saftey, fast charging, higher cycle life is desired.
Below is the typical comparative chart.