Incorporation of iron oxide into CNT/GNF as a high-performance supercapacitor electrode

CNT/GNF/Fe2O3 ternary composites were synthesized via a simple hydrothermal route. The electrochemical findings reveal that the incorporation of iron oxide (Fe2O3) into CNT/GNF (174 F g−1) boosts the specific capacitance (Cs) to 307 F g−1 at 10 mV s−1. The system also shows good capacity retention,...

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Bibliographic Details
Main Authors: Krishnan, S. (Author), Mamat, M.S (Author), Ramli, N.I.T (Author), Rashid, S.A (Author), Sulaiman, Y. (Author)
Format: Article
Language:English
Published: Elsevier Ltd 2018
Subjects:
CNT
GNF
Online Access:View Fulltext in Publisher
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Description
Summary:CNT/GNF/Fe2O3 ternary composites were synthesized via a simple hydrothermal route. The electrochemical findings reveal that the incorporation of iron oxide (Fe2O3) into CNT/GNF (174 F g−1) boosts the specific capacitance (Cs) to 307 F g−1 at 10 mV s−1. The system also shows good capacity retention, as it maintained 92% of its original capacitance after 200 cyclic voltammetry cycles. Physicochemical characterization shows that Fe2O3 was anchored randomly on the CNT/GNF sidewalls, forming a network for facile ion diffusion. The improved supercapacitance of CNT/GNF/Fe2O3 can be ascribed to the synergistic effect of the double-layer capacitance of CNT/GNF and the pseudocapacitance of Fe2O3. © 2018 Elsevier B.V.
ISBN:02540584 (ISSN)
DOI:10.1016/j.matchemphys.2018.03.044