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Abstract:
The novel IrO2-CeO2-G/Ti composite electrodes were prepared by thermal decomposition method. The synthesized electrodes with different IrO2 content were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical performances of the electrodes were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy in 0.5 mol/L H2SO4 solution. The results show that the electrode with 2.5 mg/cm(2) IrO2 exhibits an excellent specific capacitance value of 459.5 F/g, and maintains the specific capacitance at about 97.8% after 5000 charge-discharge cycles at 5 mA/cm(2) current density. The electrode with 2.5 mg/cm(2) IrO2 is an ideal electrode for supercapacitor due to its unique composition proportion and the excellent pseudocapacitance property.
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RARE METAL MATERIALS AND ENGINEERING
ISSN: 1002-185X
CN: 61-1154/TG
Year: 2020
Issue: 5
Volume: 49
Page: 1533-1538
0 . 5 0 6
JCR@2020
0 . 6 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:196
JCR Journal Grade:4
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 1
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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