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• W3099793067 abstract "Bimetallic transition metal sulfides (TMSs) are one class of promising electrode materials that have attracted wide attention for energy storage applications. Herein, we have presented a moderate and efficient synthetic methodology to rationally design and construct hierarchical honeycomb-like manganese cobalt sulfide nanosheets (MnCo 2 S 4 NSs) as integrated cathodes for hybrid supercapacitors (HSCs). The anion-exchange process performed in the sulfidation reaction has significantly improved the electrochemical performance of the MnCo 2 S 4 NSs, resulting in a superior areal capacity of 0.837 mA h cm −2 at 3 mA cm −2 , a superb rate capability, and an admirable cycling lifespan with 92.3% of the initial capacity retained after 10,000 cycles. Moreover, MnCo 2 S 4 NSs are directly used as integrated cathode and iron oxide particles encapsulated in reduced graphene oxide (Fe 2 O 3 @rGO) is employed as the anode to assemble the HSC. The as-assembled MnCo 2 S 4 NSs//Fe 2 O 3 @rGO HSC delivers a superb energy density of 61.4 Wh kg −1 with an admirable cycling lifespan of 90.4% of capacity retention after 10,000 cycles. Besides, two HSC modules connected in series can power a homemade light-emitting diode (LED) device for 23 min, highlighting its potential practical prospects in energy storage systems. Honeycomb-like MnCo 2 S 4 NSs integrated cathode is constructed by a moderate and efficient hydrothermal method. The MnCo 2 S 4 NSs//Fe 2 O 3 @rGO all solid state HSC device demonstrates a high energy density of 61.4 Wh kg −1 with an excellent cycling lifetime. • Honeycomb-like MnCo 2 S 4 NSs have been constructed as integrated cathodes with excellent electrochemical properties. • The electrochemical energy storage kinetics of MnCo 2 S 4 NSs has been studied. • All solid state hybrid supercapacitors are assembled with MnCo 2 S 4 NSs as integrated cathodes and Fe 2 O 3 @rGO as anodes. • The assembled MnCo 2 S 4 NSs//Fe 2 O 3 @rGO hybrid supercapacitor delivers excellent energy density and cycling stability." @default.
• W3099793067 created "2020-11-23" @default.
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• W3099793067 date "2021-04-01" @default.
• W3099793067 modified "2023-10-18" @default.
• W3099793067 title "Construction of hierarchical honeycomb-like MnCo2S4 nanosheets as integrated cathodes for hybrid supercapacitors" @default.
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• W3099793067 doi "https://doi.org/10.1016/j.jallcom.2020.157815" @default.
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