Olivine-type nanoparticle for hybrid supercapacitors

Fluorine‐Doped Fe2O3 as High Energy Density Electroactive Material for Hybrid Supercapacitor Applications

“…The F-Fe 2 O 3 /AC HSC delivered an energy density of about 28 W h kg À1 with a corresponding power density of 0.55 kW kg À1 , whereas an energy density of 16 W h kg À1 was only obtained for bare Fe 2 O 3 . Furthermore, the electrochemical parameters obtained for the F-Fe 2 O 3 / AC HSC cell is much higher than that of the Fe 2 O 3 / MWCNT (MWCNT = multi-walled carbon nanotube) cell reported by Zhao et al [16] and that of other configurations such as LiCrTiO 4 /AC (energy density of~23 W h kg À1 ), [33] V 2 O 5 /AC (18 W h kg À1 ), [31] LiTi 2 A C H T U N G T R E N N U N G (PO 4 ) 3 /AC (14 W h kg À1 ), [34] LiCoPO 4 /carbon nanofoam (13 W h kg À1 ), [35] TiP 2 O 7 /AC (13 W h kg À1 ), [36] and TiO 2 -B/CNTs (12.5 W h kg À1 ). [37] Figure 5 b shows the Nyquist plots of the F-Fe 2 O 3 /AC and Fe 2 O 3 /AC HSC cells recorded at open circuit voltages between 100 mHz and 100 kHz.…”

A novel asymmetric hybrid supercapacitor based on Li2FeSiO4 and activated carbon electrodes

“…Furthermore, Wang et al [8,9] have reported LiMn 2 O 4 and LiCo 1/3 Ni 1/3 Mn 1/3 O 2 as the negative electrode for hybrid supercapacitors in an aqueous system. Vasanthi et al [10] also have utilized olivine-type cathode material (LiCoPO 4 ) for hybrid supercapacitors in a non-aqueous electrolyte. However, none of the electrode materials reported in literature exhibited the long term cycleability except Li 4 Ti 5 O 12 .…”

Preparation and characterization of carbon foams–LiCoPO4 composites

“…LiCoPO 4 can be prepared by using solid state reactions [10][11][12] and soft chemistry routes [13][14][15][16][17]. The wet-chemistry technique offering improvement in the terms of material preparation has been extensively used as a low-temperature synthesis route (T < 200 • C).…”