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Honeycomb-like manganese oxide nanospheres for redox supercapacitors
Singu, Bal Sydulu,Hong, Sang Eun,Yoon, Kuk Ro INSTITUTE FOR IONICS 2018 Ionics Vol. No.
<P>Honeycomb-like MnO2 nanospheres were synthesized using stainless steel substrates by a facile chemical bath deposition method. The obtained nanospheres were about 200-400 nm in diameter and consisted of porous ultrathin nanosheets. Honeycomb-like MnO2 nanospheres exhibited a high specific capacitance of 240 F g(-1) and 87.1% capacitance retention after 1000 cycles at a current density of 0.5 A g(-1). These remarkable electrochemical results imply great potential for applications of the honeycomb-like MnO2 nanospheres in supercapacitors.</P>