Hydrothermal Synthesis of MnO2-Loaded Porous Carbons for Supercapacitors

Zi Qiang Wang; Li Xian Sun; Fen Xu; Xiao Jun Peng

doi:10.4028/www.scientific.net/MSF.852.870

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HomeMaterials Science ForumMaterials Science Forum Vol. 852Hydrothermal Synthesis of MnO2-Loaded Porous...

Hydrothermal Synthesis of MnO₂-Loaded Porous Carbons for Supercapacitors

Abstract:

The porous carbons have been prepared by chemical activation using commercial activated carbons as precursors and KOH as the chemical agent, and the MnO₂ and MnO₂-loaded porous carbons have been synthesized via the hydrothermal method using the Mn (SO₄)₂·H₂O and (NH₄)₂S₂O₈ as the reagents. The morphology and structure of the obtained materials are characterized by the SEM, XRD and N₂ sorption. The obtained MnO₂ exhibits rod-like morphology, which can be indexed to a pure tetragonal phase [space group: P4₂/mnm] of β-MnO₂. The porous carbons and MnO₂-loaded porous carbons show a well-developed porosity. The electrochemical tests indicate that the samples have excellent performances for the supercapacitors.

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Materials Science Forum (Volume 852)

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870-875

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https://doi.org/10.4028/www.scientific.net/MSF.852.870

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April 2016

Authors:

Zi Qiang Wang, Li Xian Sun, Fen Xu, Xiao Jun Peng

Keywords:

Hydrothermal Synthesis, MnO₂, Porous Carbon, Supercapacitor

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