The self-assembly of shape controlled functionalized graphene-MnO 2 composites for application as supercapacitors

Xiaomiao Feng; Ningna Chen; Yu Zhang; Zhenzhen Yan; Xingfen Liu; Yanwen Ma; Qingming Shen; Lianhui Wang; Wei Huang

doi:10.1039/c3ta15402e

The self-assembly of shape controlled functionalized graphene-MnO ₂ composites for application as supercapacitors

Xiaomiao Feng, Ningna Chen, Yu Zhang, Zhenzhen Yan, Xingfen Liu, Yanwen Ma, Qingming Shen, Lianhui Wang, Wei Huang

Nanjing University of Posts and Telecommunications

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

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Abstract

Graphene-MnO₂ nanocomposites with different morphologies were obtained by a facile self-assembly method. The formation mechanism of graphene-MnO₂ composites with different shapes of MnO₂ is discussed in detail. Nanostructured MnO₂ with different morphologies was distributed on the surface of graphene uniformly. The prepared graphene-MnO₂ composites could be used as electrode materials for supercapacitors. The graphene-MnO₂ (flowerlike nanospheres) composite (405 F g^-1) exhibited better capacitive performance than that of the graphene-MnO₂ (nanowires) composite (318 F g^-1) at a current density of 1.0 A g^-1. The synergistic effect of graphene and MnO₂ endowed the composite with high electrochemical capacitance. Moreover, the graphene-MnO₂ (flowerlike nanospheres) composite showed a fast charge-discharge process and high cyclic stability.

Original language	English
Pages (from-to)	9178-9184
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	24
DOIs	https://doi.org/10.1039/c3ta15402e
State	Published - 28 Jun 2014
Externally published	Yes

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10.1039/c3ta15402e

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title = "The self-assembly of shape controlled functionalized graphene-MnO 2 composites for application as supercapacitors",

abstract = "Graphene-MnO2 nanocomposites with different morphologies were obtained by a facile self-assembly method. The formation mechanism of graphene-MnO2 composites with different shapes of MnO2 is discussed in detail. Nanostructured MnO2 with different morphologies was distributed on the surface of graphene uniformly. The prepared graphene-MnO2 composites could be used as electrode materials for supercapacitors. The graphene-MnO2 (flowerlike nanospheres) composite (405 F g-1) exhibited better capacitive performance than that of the graphene-MnO2 (nanowires) composite (318 F g-1) at a current density of 1.0 A g-1. The synergistic effect of graphene and MnO2 endowed the composite with high electrochemical capacitance. Moreover, the graphene-MnO2 (flowerlike nanospheres) composite showed a fast charge-discharge process and high cyclic stability.",

author = "Xiaomiao Feng and Ningna Chen and Yu Zhang and Zhenzhen Yan and Xingfen Liu and Yanwen Ma and Qingming Shen and Lianhui Wang and Wei Huang",

year = "2014",

month = jun,

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doi = "10.1039/c3ta15402e",

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T1 - The self-assembly of shape controlled functionalized graphene-MnO 2 composites for application as supercapacitors

AU - Feng, Xiaomiao

AU - Chen, Ningna

AU - Zhang, Yu

AU - Yan, Zhenzhen

AU - Liu, Xingfen

AU - Ma, Yanwen

AU - Shen, Qingming

AU - Wang, Lianhui

AU - Huang, Wei

PY - 2014/6/28

Y1 - 2014/6/28

N2 - Graphene-MnO2 nanocomposites with different morphologies were obtained by a facile self-assembly method. The formation mechanism of graphene-MnO2 composites with different shapes of MnO2 is discussed in detail. Nanostructured MnO2 with different morphologies was distributed on the surface of graphene uniformly. The prepared graphene-MnO2 composites could be used as electrode materials for supercapacitors. The graphene-MnO2 (flowerlike nanospheres) composite (405 F g-1) exhibited better capacitive performance than that of the graphene-MnO2 (nanowires) composite (318 F g-1) at a current density of 1.0 A g-1. The synergistic effect of graphene and MnO2 endowed the composite with high electrochemical capacitance. Moreover, the graphene-MnO2 (flowerlike nanospheres) composite showed a fast charge-discharge process and high cyclic stability.

AB - Graphene-MnO2 nanocomposites with different morphologies were obtained by a facile self-assembly method. The formation mechanism of graphene-MnO2 composites with different shapes of MnO2 is discussed in detail. Nanostructured MnO2 with different morphologies was distributed on the surface of graphene uniformly. The prepared graphene-MnO2 composites could be used as electrode materials for supercapacitors. The graphene-MnO2 (flowerlike nanospheres) composite (405 F g-1) exhibited better capacitive performance than that of the graphene-MnO2 (nanowires) composite (318 F g-1) at a current density of 1.0 A g-1. The synergistic effect of graphene and MnO2 endowed the composite with high electrochemical capacitance. Moreover, the graphene-MnO2 (flowerlike nanospheres) composite showed a fast charge-discharge process and high cyclic stability.

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EP - 9184

JO - Journal of Materials Chemistry A

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ER -

The self-assembly of shape controlled functionalized graphene-MnO ₂ composites for application as supercapacitors

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