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Abstract:
Hierarchical MnO2sub-microspheres were fabricated by using a simple, green and efficient low-temperature route. These sub-microspheres were formed via the aggregation of ultrathin nanosheets with a thickness of 2-4 nm. An electrode made of hierarchical MnO2sub-microspheres exhibited a specific capacitance of 120 F g-1at a current density of 0.167 A g-1. For an asymmetric AC//MnO2supercapacitor, it exhibited a superior electrochemical stability in 1 M Na2SO4aqueous solution with 88% retention of the initial specific capacitance after 1000 cycles, and the Coulombic efficiency was above 97%, indicating good charge-discharge reversibility and electrochemical stability. This journal is © the Partner Organisations 2014.
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RSC Advances
ISSN: 2046-2069
Year: 2014
Issue: 77
Volume: 4
Page: 40753-40757
3 . 8 4
JCR@2014
3 . 9 0 0
JCR@2023
ESI HC Threshold:268
JCR Journal Grade:1
CAS Journal Grade:3
Cited Count:
SCOPUS Cited Count: 37
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
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