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,...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier Ltd
2018
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Subjects: | |
Online Access: | View Fulltext in Publisher View in Scopus |
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. |
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ISBN: | 02540584 (ISSN) |
DOI: | 10.1016/j.matchemphys.2018.03.044 |