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New Energy Storage Option: Toward ZnCo2O4 Nanorods/Nickel Foam Architectures for High-Performance Supercapacitors
journal contribution
posted on 2016-02-18, 13:50 authored by Bin Liu, Boyang Liu, Qiufan Wang, Xianfu Wang, Qingyi Xiang, Di Chen, Guozhen ShenHierarchical
ZnCo2O4/nickel foam architectures
were first fabricated from a simple scalable solution approach, exhibiting
outstanding electrochemical performance in supercapacitors with high
specific capacitance (∼1400 F g–1 at 1 A
g–1), excellent rate capability (72.5% capacity
retention at 20 A g–1), and good cycling stability
(only 3% loss after 1000 cycles at 6 A g–1). All-solid-state
supercapacitors were also fabricated by assembling two pieces of the
ZnCo2O4-based electrodes, showing superior performance
in terms of high specific capacitance and long cycling stability.
Our work confirms that the as-prepared architectures can not only
be applied in high energy density fields, but also be used in high
power density applications, such as electric vehicles, flexible electronics,
and energy storage devices.