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A facile route to preparation of Co3O4 nanoplates and investigation of their charge storage ability as electrode material for supercapacitors
被引:56
作者:
Aghazadeh, Mustafa
[1
]
Ahmadi, Rohollah
[2
]
Gharailou, Davoud
[3
]
Ganjali, Mohammad Reza
[3
,4
]
Norouzi, Parviz
[3
]
机构:
[1] NSTRI, POB 14395-834, Tehran, Iran
[2] Islamic Azad Univ, Saveh Branch, Dept Chem, Saveh, Iran
[3] Univ Tehran, Ctr Excellence Electrochem, Fac Chem, Tehran, Iran
[4] Univ Tehran Med Sci, Endocrinol & Metab Mol Cellular Sci Inst, Biosensor Res Ctr, Tehran, Iran
关键词:
HIGH-PERFORMANCE SUPERCAPACITORS;
LITHIUM-ION BATTERIES;
OXYGEN EVOLUTION REACTION;
ELECTROCHEMICAL SYNTHESIS;
COBALT OXIDE;
ANODE MATERIALS;
NANOSTRUCTURES;
NANOSHEETS;
NANOPARTICLES;
NANOCOMPOSITES;
D O I:
10.1007/s10854-016-4882-x
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
A fast, cheap and facile method was developed for the preparation of Co3O4 nanoplates at large-scale. According to this method, initially beta-Co(OH)(2) nanoplates were prepared through a simple, template- and additive-free electrodeposition route and then the Co3O4 nanoplates were obtained via the calcination of the hydroxide precursor at 500 A degrees C for 3 h, under an O-2 atmosphere. The products were characterized by XRD, IR, DCS-TG and SEM techniques, and electrochemical investigations by cyclic voltammetry, charge-discharge tests and EIS measurements, which confirmed the excellent supercapacitive performance of the Co3O4 nanoplates including their high contribution and electrochemical utilization in the redox reactions, reversible redox reactions, low diffusion resistance, high specific capacitance of 485 F g(-1), and an 84.1 % capacity retention after 3000 cycling at the applied discharge current density of 5 A g(-1).
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页码:8623 / 8632
页数:10
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