Outstanding supercapacitor performance of Nd–Mn co-doped perovskite LaFeO3@nitrogen-doped graphene oxide nanocomposites

Perovskites have been significantly considered as promising materials for electrochemical energy storage in the recent years. Co-doping of Mn and Nd with hydrothermally synthesized LaFeO3 (LF) perovskite resulted in La0.8Nd0.2Fe0.8Mn0.2O3 (LNFM) with significantly higher specific capacitance of 158 ...

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Bibliographic Details
Published in:Electrochimica acta 2020-03, Vol.335, p.135699, Article 135699
Main Authors: Rezanezhad, Armin, Rezaie, Ehsan, Ghadimi, Laleh Saleh, Hajalilou, Abdollah, Abouzari-Lotf, Ebrahim, Arsalani, Nasser
Format: Article
Language:English
Subjects:
Capacitance
Co-doped perovskite
Electrochemical analysis
Energy storage
Ferrites
Graphene
Lanthanum compounds
Lanthanum ferrite
N-doped graphene oxide nanocomposite
Nanocomposites
Perovskites
Supercapacitor
Supercapacitors
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Summary:Perovskites have been significantly considered as promising materials for electrochemical energy storage in the recent years. Co-doping of Mn and Nd with hydrothermally synthesized LaFeO3 (LF) perovskite resulted in La0.8Nd0.2Fe0.8Mn0.2O3 (LNFM) with significantly higher specific capacitance of 158 F/g at 50 mV/s compared to non-doped and single doped LF samples. Subsequently, LNFM/nitrogen-doped graphene oxide (NGO) nanocomposite was prepared and investigated. It was found out that the introducing of NGO substantially enhances the specific capacitance of the nanocomposite up to 1060 F/g at 50 mV/s. Besides, the composite revealed outstanding capacity retention as 92.4% after 10000 continuous cycle (85.37% for the LNFM sample). In overall, the electrochemical behavior of the composite with 1:1 ratio of LNFM/NGO confirms its high potential as supercapacitor for energy storage applications.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2020.135699