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MOF-derived microstructural interconnected network porous Mn2O3/C as negative electrode material for asymmetric supercapacitor device

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Abstract

A metal–organic framework is employed for the preparation of an interconnected network porous structure of Mn2O3/carbon for supercapacitor applications. X-ray diffraction patterns indicate the crystal structure of the Mn2O3/carbon composites. Morphological studies reveal the formation of a carbon interconnected network porous structure of the prepared samples. X-ray photoelectron spectroscopy and energy-dispersive X-ray analysis confirm the carbon coating on the Mn2O3 particles. Three-electrode measurements showed that the prepared Mn2O3/C composite is suitable for asymmetric supercapacitor device fabrication, since the negative electrode exhibits a highest specific capacitance of 776 F g−1 at a specific current of 1 A g−1. The symmetric device yields a specific cell capacitance of 122 F g−1 at a specific current of 2.5 A g−1. The asymmetric device yields a maximum specific energy capacity of 54.9 W h kg−1 at a power capacity of 2245 W kg−1.

Graphical abstract: MOF-derived microstructural interconnected network porous Mn2O3/C as negative electrode material for asymmetric supercapacitor device

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Publication details

The article was received on 02 Oct 2018, accepted on 28 Jan 2019 and first published on 28 Jan 2019


Article type: Paper
DOI: 10.1039/C8CE01683F
Citation: CrystEngComm, 2019, Advance Article

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    MOF-derived microstructural interconnected network porous Mn2O3/C as negative electrode material for asymmetric supercapacitor device

    S. Nagamuthu and K. Ryu, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C8CE01683F

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