Supercapacitors
Supercapacitors are of great interest as high power electrochemical energy storage devices to complement batteries in either stationary or mobile electrical energy storage. Their fast discharge capability combined with very long cycle-life (beyond millions of cycles) makes them particularly suitable for public electrical transportation where the breaking energy can be easily recovered at high charging rate.
The main limitation of supercapacitors is the low energy density (5 Wh/kg of electrode material compared to 160 Wh/kg for Li-ion batteries). Therefore, efforts are focused on increasing the energy density of supercapacitors whilst retaining their high power and long cycle-life.
In the Titirici group, we make efforts towards this by: