Incorporation of nanostructured manganese dioxide into carbon nanofibers and its electrochemical performance

Jian Gan Wang; Ying Yang; Zheng Hong Huang; Feiyu Kang

doi:10.1016/j.matlet.2011.12.071

Incorporation of nanostructured manganese dioxide into carbon nanofibers and its electrochemical performance

Jian Gan Wang, Ying Yang, Zheng Hong Huang, Feiyu Kang

Tsinghua University

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

30 Scopus citations

Abstract

Nanostructured manganese dioxides (MnO ₂)/carbon nanofibers (CNFs) composites were fabricated by combining electrospinning technique and hydrothermal treatment. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry and galvanostatic charge/discharge methods were employed to characterize the structure and morphology of MnO ₂/CNFs composites and to evaluate their electrochemical performance as freestanding electrodes. The results showed that γ-MnO ₂ nanocrystals were incorporated into the monolithic CNF substrate and the morphology of γ-MnO ₂ evolved from nanoparticles toward nanoneedles with the increase in dipping time. At short dipping time, the γ-MnO ₂ nanoparticles were embedded into CNFs and thus showed a specific capacitance as high as 265 F/g and superior rate capability due to their good electrical connection to CNFs.

Original language	English
Pages (from-to)	18-21
Number of pages	4
Journal	Materials Letters
Volume	72
DOIs	https://doi.org/10.1016/j.matlet.2011.12.071
State	Published - 1 Apr 2012
Externally published	Yes

Keywords

Carbon nanofiber
Electrochemical performance
MnO
Nanocomposites
Nanoparticles

Access to Document

10.1016/j.matlet.2011.12.071

Cite this

@article{c20d78460e0841ada75268b4fbf2532b,

title = "Incorporation of nanostructured manganese dioxide into carbon nanofibers and its electrochemical performance",

abstract = "Nanostructured manganese dioxides (MnO 2)/carbon nanofibers (CNFs) composites were fabricated by combining electrospinning technique and hydrothermal treatment. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry and galvanostatic charge/discharge methods were employed to characterize the structure and morphology of MnO 2/CNFs composites and to evaluate their electrochemical performance as freestanding electrodes. The results showed that γ-MnO 2 nanocrystals were incorporated into the monolithic CNF substrate and the morphology of γ-MnO 2 evolved from nanoparticles toward nanoneedles with the increase in dipping time. At short dipping time, the γ-MnO 2 nanoparticles were embedded into CNFs and thus showed a specific capacitance as high as 265 F/g and superior rate capability due to their good electrical connection to CNFs.",

keywords = "Carbon nanofiber, Electrochemical performance, MnO, Nanocomposites, Nanoparticles",

author = "Wang, {Jian Gan} and Ying Yang and Huang, {Zheng Hong} and Feiyu Kang",

year = "2012",

month = apr,

day = "1",

doi = "10.1016/j.matlet.2011.12.071",

language = "英语",

volume = "72",

pages = "18--21",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Incorporation of nanostructured manganese dioxide into carbon nanofibers and its electrochemical performance

AU - Wang, Jian Gan

AU - Yang, Ying

AU - Huang, Zheng Hong

AU - Kang, Feiyu

PY - 2012/4/1

Y1 - 2012/4/1

N2 - Nanostructured manganese dioxides (MnO 2)/carbon nanofibers (CNFs) composites were fabricated by combining electrospinning technique and hydrothermal treatment. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry and galvanostatic charge/discharge methods were employed to characterize the structure and morphology of MnO 2/CNFs composites and to evaluate their electrochemical performance as freestanding electrodes. The results showed that γ-MnO 2 nanocrystals were incorporated into the monolithic CNF substrate and the morphology of γ-MnO 2 evolved from nanoparticles toward nanoneedles with the increase in dipping time. At short dipping time, the γ-MnO 2 nanoparticles were embedded into CNFs and thus showed a specific capacitance as high as 265 F/g and superior rate capability due to their good electrical connection to CNFs.

AB - Nanostructured manganese dioxides (MnO 2)/carbon nanofibers (CNFs) composites were fabricated by combining electrospinning technique and hydrothermal treatment. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry and galvanostatic charge/discharge methods were employed to characterize the structure and morphology of MnO 2/CNFs composites and to evaluate their electrochemical performance as freestanding electrodes. The results showed that γ-MnO 2 nanocrystals were incorporated into the monolithic CNF substrate and the morphology of γ-MnO 2 evolved from nanoparticles toward nanoneedles with the increase in dipping time. At short dipping time, the γ-MnO 2 nanoparticles were embedded into CNFs and thus showed a specific capacitance as high as 265 F/g and superior rate capability due to their good electrical connection to CNFs.

KW - Carbon nanofiber

KW - Electrochemical performance

KW - MnO

KW - Nanocomposites

KW - Nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=84862808357&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2011.12.071

DO - 10.1016/j.matlet.2011.12.071

M3 - 文章

AN - SCOPUS:84862808357

SN - 0167-577X

VL - 72

SP - 18

EP - 21

JO - Materials Letters

JF - Materials Letters

ER -

Incorporation of nanostructured manganese dioxide into carbon nanofibers and its electrochemical performance

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this