Unlocking the potential of La-doped iron oxide @graphene oxide and ionic liquid-based asymmetric supercapacitor
Issued Date
2022-11-25
Resource Type
eISSN
2352152X
Scopus ID
2-s2.0-85139053160
Journal Title
Journal of Energy Storage
Volume
55
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Energy Storage Vol.55 (2022)
Suggested Citation
Pathan S.C., Shaikh N.S., Mali S.S., Patil J.V., Katkar P.K., Padalkar N.S., Praserthdam S., Hong C.K., Kanjanaboos P., Shaikh J.S. Unlocking the potential of La-doped iron oxide @graphene oxide and ionic liquid-based asymmetric supercapacitor. Journal of Energy Storage Vol.55 (2022). doi:10.1016/j.est.2022.105642 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/84544
Title
Unlocking the potential of La-doped iron oxide @graphene oxide and ionic liquid-based asymmetric supercapacitor
Other Contributor(s)
Abstract
Herein, lanthanum-doped iron oxide-integrated graphene oxide (10%La-Fe2O3@GO) as an anode and β-MnO2 as a cathode material were successfully obtained via a facile hydrothermal method. The 10%La-Fe2O3@GO shows excellent electrochemical performance due to doping of rare earth La3+ metal ions in the Fe2O3@GO, providing abundant active sites. The 10%La-Fe2O3@GO was operated at a high potential window (−1.2 V) with an excellent specific capacitance (Cs) of 682.3 F/g at 1 A/g current density and capacitance retention of 83% over 5000 cycles. Moreover, the configured MnO2//Na2SO4//10%La-Fe2O3@GO aqueous device (Aq-ASC) was operated at a potential window of +1.6 V and delivered a maximum energy density of 19.5 Wh/kg at 0.9 kW/kg power density with Cs of 62.5 F/g at 1 A/g current density. Also, this device exhibited 87% retention over 5000 cycles. The quasi-solid state ionic liquid-based [BMIM][PF6] configuration of MnO2//[BMIM][PF6]//10%La-Fe2O3@GO (Iq-ASC) at a potential window of +4 V delivered a maximum energy density of 104.2 Wh/kg at 270.2 W/kg with Cs of 46.9 F/g at 0.1 A/g; this device is a perfect model for heavy-duty applications and hybrid vehicles due to ability to its adequate energy density at high-power density.