Hydrothermal Self-assembly of Manganese Dioxide/Manganese Carbonate/Reduced Graphene Oxide Aerogel for Asymmetric Supercapacitors

Yongchuan Liu; Dawei He; Honglu Wu; Jiahua Duan; Yining Zhang

doi:10.1016/j.electacta.2015.01.223

Hydrothermal Self-assembly of Manganese Dioxide/Manganese Carbonate/Reduced Graphene Oxide Aerogel for Asymmetric Supercapacitors

Yongchuan Liu^*, Dawei He, Honglu Wu, Jiahua Duan, Yining Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

121 Citations (Scopus)

Abstract

A facile strategy has been used to prepare MnO₂/MnCO₃/rGO aerogels (MGA) with good electrical conductivity and high mechanical strength. Shape-controlled rod-like MnO₂ and particle-shaped MnCO₃ hybrid nanostructures is incorporated with reduced graphene oxide (rGO). The 3D aerogels were tailored and directly used as the electrode of supercapacitor without adding polymer binder or conductive additives. Asymmetric supercapacitors were fabricated using MGA as the positive electrode and rGO aerogel (GA) as the negative electrode in a neutral aqueous Na₂SO₄ electrolyte. The asymmetric supercapacitor exhibits an energy density of 17.8 W h kg^-1 with a power density of 400 W kg^-1 in a stable potential window of 0-1.6 V. In this study, we first provide a new pathway to fabricate MnO₂/MnCO₃/rGO ternary composite for aerogel-based asymmetric supercapacitors.

Original language	English
Pages (from-to)	154-162
Number of pages	9
Journal	Electrochimica Acta
Volume	164
DOIs	https://doi.org/10.1016/j.electacta.2015.01.223
Publication status	Published - 10 May 2015
Externally published	Yes

Keywords

asymmetric supercapacitor
grapheme
manganese carbonate
manganese oxide
three-dimensional

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10.1016/j.electacta.2015.01.223

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title = "Hydrothermal Self-assembly of Manganese Dioxide/Manganese Carbonate/Reduced Graphene Oxide Aerogel for Asymmetric Supercapacitors",

abstract = "A facile strategy has been used to prepare MnO2/MnCO3/rGO aerogels (MGA) with good electrical conductivity and high mechanical strength. Shape-controlled rod-like MnO2 and particle-shaped MnCO3 hybrid nanostructures is incorporated with reduced graphene oxide (rGO). The 3D aerogels were tailored and directly used as the electrode of supercapacitor without adding polymer binder or conductive additives. Asymmetric supercapacitors were fabricated using MGA as the positive electrode and rGO aerogel (GA) as the negative electrode in a neutral aqueous Na2SO4 electrolyte. The asymmetric supercapacitor exhibits an energy density of 17.8 W h kg-1 with a power density of 400 W kg-1 in a stable potential window of 0-1.6 V. In this study, we first provide a new pathway to fabricate MnO2/MnCO3/rGO ternary composite for aerogel-based asymmetric supercapacitors.",

keywords = "asymmetric supercapacitor, grapheme, manganese carbonate, manganese oxide, three-dimensional",

author = "Yongchuan Liu and Dawei He and Honglu Wu and Jiahua Duan and Yining Zhang",

note = "Publisher Copyright: {\textcopyright} 2015 Published by Elsevier Ltd.",

year = "2015",

month = may,

day = "10",

doi = "10.1016/j.electacta.2015.01.223",

language = "English",

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AU - Liu, Yongchuan

AU - He, Dawei

AU - Wu, Honglu

AU - Duan, Jiahua

AU - Zhang, Yining

PY - 2015/5/10

Y1 - 2015/5/10

N2 - A facile strategy has been used to prepare MnO2/MnCO3/rGO aerogels (MGA) with good electrical conductivity and high mechanical strength. Shape-controlled rod-like MnO2 and particle-shaped MnCO3 hybrid nanostructures is incorporated with reduced graphene oxide (rGO). The 3D aerogels were tailored and directly used as the electrode of supercapacitor without adding polymer binder or conductive additives. Asymmetric supercapacitors were fabricated using MGA as the positive electrode and rGO aerogel (GA) as the negative electrode in a neutral aqueous Na2SO4 electrolyte. The asymmetric supercapacitor exhibits an energy density of 17.8 W h kg-1 with a power density of 400 W kg-1 in a stable potential window of 0-1.6 V. In this study, we first provide a new pathway to fabricate MnO2/MnCO3/rGO ternary composite for aerogel-based asymmetric supercapacitors.

AB - A facile strategy has been used to prepare MnO2/MnCO3/rGO aerogels (MGA) with good electrical conductivity and high mechanical strength. Shape-controlled rod-like MnO2 and particle-shaped MnCO3 hybrid nanostructures is incorporated with reduced graphene oxide (rGO). The 3D aerogels were tailored and directly used as the electrode of supercapacitor without adding polymer binder or conductive additives. Asymmetric supercapacitors were fabricated using MGA as the positive electrode and rGO aerogel (GA) as the negative electrode in a neutral aqueous Na2SO4 electrolyte. The asymmetric supercapacitor exhibits an energy density of 17.8 W h kg-1 with a power density of 400 W kg-1 in a stable potential window of 0-1.6 V. In this study, we first provide a new pathway to fabricate MnO2/MnCO3/rGO ternary composite for aerogel-based asymmetric supercapacitors.

KW - asymmetric supercapacitor

KW - grapheme

KW - manganese carbonate

KW - manganese oxide

KW - three-dimensional

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DO - 10.1016/j.electacta.2015.01.223

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AN - SCOPUS:84924032930

SN - 0013-4686

VL - 164

SP - 154

EP - 162

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Hydrothermal Self-assembly of Manganese Dioxide/Manganese Carbonate/Reduced Graphene Oxide Aerogel for Asymmetric Supercapacitors

Abstract

Keywords

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