Ag-Incorporated CeO2 nano cauliflowers for high-performance supercapacitor devicesElectronic supplementary information (ESI) available. See DOI: 10.1039/c7nj00817a
In this study, we report Ag-incorporated CeO 2 nano cauliflowers prepared by a simple hydrothermal method. The excellent combination of Ag with CeO 2 has been exploited for supercapacitor applications owing to high conductive property of Ag and efficient redox activity of CeO 2 . The significant adv...
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Main Authors | , |
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Format | Journal Article |
Language | English |
Published |
25.09.2017
|
Online Access | Get full text |
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Summary: | In this study, we report Ag-incorporated CeO
2
nano cauliflowers prepared by a simple hydrothermal method. The excellent combination of Ag with CeO
2
has been exploited for supercapacitor applications owing to high conductive property of Ag and efficient redox activity of CeO
2
. The significant advantage of this nanostructure is to enhance the surface area (50.2 m
2
g
−1
) and conductivity that leads to the enrichment of electrochemical behaviour. Moreover, addition of Ag results in improved specific capacitance (47% improvement over the pristine), excellent rate capacity (1012 F g
−1
at 10 A g
−1
) and good capacitance retention (100% over 1500 cycles) for Ag-incorporated CeO
2
. The good supercapacitive feature has a great potential for use in asymmetric supercapacitors. The asymmetric device could provide excellent specific capacitance (287 F g
−1
at 2 mV s
−1
), outstanding rate capacity (140 F g
−1
at 10 mV s
−1
) and enhanced cyclic stability (100% over 1000 cycles). It delivers a maximum energy density of 70 W h kg
−1
and a power density of 750 W kg
−1
. This study clearly demonstrates the effectiveness of incorporating Ag into the CeO
2
nanostructure with significantly improved electrochemical features.
This cauliflower-like morphological structures significantly inflate the electrochemical nature of the material. |
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Bibliography: | 10.1039/c7nj00817a Electronic supplementary information (ESI) available. See DOI |
ISSN: | 1144-0546 1369-9261 |
DOI: | 10.1039/c7nj00817a |