Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Jinghua Liu; Fengfan Li; Xin Li; Xiong He

doi:10.1016/j.physleta.2020.126539

Ultrathin MnO₂ nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Jinghua Liu
, Fengfan Li
, Xin Li^*
, Xiong He

^*Corresponding author for this work

Guangxi University of Technology
School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

22 Scopus citations

Abstract

Ultrathin MnO₂ nanosheets grown on the surface of hollow carbon spheres (MnO₂/HCSs) were fabricated by the redox reaction between carbon spheres with KMnO₄ in aqueous solution. Due to the porous structure and large amounts of active sites, MnO₂/HCSs exhibit excellent capacitive performance with 227.5 F g⁻¹ at 1 A g⁻¹. After 5000 cycles, the capacity retention of MnO₂/HCSs remains 96%, indicating its good cycling stability. These results demonstrate that MnO₂/HCSs are promising supercapacitor electrode material and this work provide a facile method for growth of ultrathin MnO₂ nanosheets on carbon substrate.

Original language	English
Article number	126539
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	384
Issue number	22
DOIs	https://doi.org/10.1016/j.physleta.2020.126539
State	Published - 6 Aug 2020
Externally published	Yes

Keywords

Hollow carbon spheres
Supercapacitor
Ultrathin MnO nanosheets

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10.1016/j.physleta.2020.126539

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@article{b1b95985614a49c082e810d48b640c67,

title = "Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance",

abstract = "Ultrathin MnO2 nanosheets grown on the surface of hollow carbon spheres (MnO2/HCSs) were fabricated by the redox reaction between carbon spheres with KMnO4 in aqueous solution. Due to the porous structure and large amounts of active sites, MnO2/HCSs exhibit excellent capacitive performance with 227.5 F g−1 at 1 A g−1. After 5000 cycles, the capacity retention of MnO2/HCSs remains 96\%, indicating its good cycling stability. These results demonstrate that MnO2/HCSs are promising supercapacitor electrode material and this work provide a facile method for growth of ultrathin MnO2 nanosheets on carbon substrate.",

keywords = "Hollow carbon spheres, Supercapacitor, Ultrathin MnO nanosheets",

author = "Jinghua Liu and Fengfan Li and Xin Li and Xiong He",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = aug,

day = "6",

doi = "10.1016/j.physleta.2020.126539",

language = "英语",

volume = "384",

journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

issn = "0375-9601",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance

AU - Liu, Jinghua

AU - Li, Fengfan

AU - Li, Xin

AU - He, Xiong

PY - 2020/8/6

Y1 - 2020/8/6

N2 - Ultrathin MnO2 nanosheets grown on the surface of hollow carbon spheres (MnO2/HCSs) were fabricated by the redox reaction between carbon spheres with KMnO4 in aqueous solution. Due to the porous structure and large amounts of active sites, MnO2/HCSs exhibit excellent capacitive performance with 227.5 F g−1 at 1 A g−1. After 5000 cycles, the capacity retention of MnO2/HCSs remains 96%, indicating its good cycling stability. These results demonstrate that MnO2/HCSs are promising supercapacitor electrode material and this work provide a facile method for growth of ultrathin MnO2 nanosheets on carbon substrate.

AB - Ultrathin MnO2 nanosheets grown on the surface of hollow carbon spheres (MnO2/HCSs) were fabricated by the redox reaction between carbon spheres with KMnO4 in aqueous solution. Due to the porous structure and large amounts of active sites, MnO2/HCSs exhibit excellent capacitive performance with 227.5 F g−1 at 1 A g−1. After 5000 cycles, the capacity retention of MnO2/HCSs remains 96%, indicating its good cycling stability. These results demonstrate that MnO2/HCSs are promising supercapacitor electrode material and this work provide a facile method for growth of ultrathin MnO2 nanosheets on carbon substrate.

KW - Hollow carbon spheres

KW - Supercapacitor

KW - Ultrathin MnO nanosheets

UR - https://www.scopus.com/pages/publications/85084490475

U2 - 10.1016/j.physleta.2020.126539

DO - 10.1016/j.physleta.2020.126539

M3 - 文章

AN - SCOPUS:85084490475

SN - 0375-9601

VL - 384

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 22

M1 - 126539

ER -

Ultrathin MnO₂ nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Abstract

Keywords

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