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

科研成果: 期刊稿件 › 文章 › 同行评审

30 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	18-21
页数	4
期刊	Materials Letters
卷	72
DOI	https://doi.org/10.1016/j.matlet.2011.12.071
出版状态	已出版 - 1 4月 2012
已对外发布	是

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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",

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

language = "英语",

volume = "72",

pages = "18--21",

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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

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SN - 0167-577X

VL - 72

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

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