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Nanoporous CuCo2S4 Microspheres: A Novel Positive Electrode for High-Performance Hybrid Energy Storage Devices
被引:84
作者:
Mohammadi, Abdolkhaled
[1
]
Moosavifard, Seyyed Ebrahim
[2
,3
]
Tabrizi, Amin Goljanian
[1
]
Abdi, Mahnaz M.
[4
]
Karimi, Gholamreza
[1
]
机构:
[1] Shiraz Univ, Dept Chem Engn, Shiraz 7134851154, Iran
[2] JUMS, Sch Med, Dept Adv Med Sci & Technol, Jahrom 7414846199, Iran
[3] JUMS, Sch Med, Res Ctr Noncommunicable Dis, Jahrom 7414846199, Iran
[4] Islamic Azad Univ, Islamshahr Branch, Young Researchers & Elite Club, Islamshahr 3314767653, Iran
关键词:
hollow spheres;
nanoporous;
metal sulfide;
self-template;
CuCo2S4;
supercapacitor;
ALL-SOLID-STATE;
FLEXIBLE CARBON-FIBERS;
FLOWER-LIKE CUCO2S4;
SUPERCAPACITOR ELECTRODES;
FACILE SYNTHESIS;
GRAPHENE OXIDE;
NI FOAM;
POLYANILINE NANOARRAYS;
NANOWIRE ARRAYS;
HIGH AREAL;
D O I:
10.1021/acsaem.8b01651
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Demands for safer, faster, and more efficient energy storage systems have motivated researchers to design and develop new electrode materials. Ternary transition metal oxides are the electrode materials commonly investigated for application in energy storage systems. Nevertheless, the low active surface area and poor conductivity limit their electrochemical performances. In the present study, nano porous CuCo2S4 microspheres (CCS) electrode has been successfully prepared via a facile self-template method for high-performance hybrid energy storage devices. An ultrahigh specific capacitance of 1566 F g(-1) at 2 A g(-1) and a superb cycling performance of 95.7% retention after 5000-GCD cycles have been obtained for this electrode. In addition, when this CCS electrode is assembled with an activated carbon (AC) electrode, the as-fabricated asymmetric supercapacitor delivers outstanding performance with maximum power and energy densities of 16 and 43.65 W h kg(-1), respectively, which is superior to conventional supercapacitors. The fabricated supercapacitor can light two green LEDs for more than 15 min. This work sheds a further light on the design of efficient electrodes which can be utilized in the next generation of high-performance hybrid energy storage devices.
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页码:627 / 635
页数:17
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