The self-assembly of shape controlled functionalized graphene-MnO2 composites for application as supercapacitors

被引：94

作者：

Feng, Xiaomiao ^{[1
]}

Chen, Ningna ^{[1
]}

Zhang, Yu ^{[1
]}

Yan, Zhenzhen ^{[1
]}

Liu, Xingfen ^{[1
]}

Ma, Yanwen ^{[1
]}

Shen, Qingming ^{[1
]}

Wang, Lianhui ^{[1
]}

Huang, Wei ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Mat Sci & Engn, Inst Adv Mat, Key Lab Organ Elect & Informat Displays, Nanjing 210046, Jiangsu, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 24期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

STEP HYDROTHERMAL METHOD; ELECTROCHEMICAL CAPACITORS; HIGH-PERFORMANCE; ELECTRODES; FILM; NANOSTRUCTURES; BATTERIES; SHEETS;

D O I：

10.1039/c3ta15402e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：9178 / 9184

页数：7

共 36 条

[1] Physicochemical properties and electrochemical behavior of binary manganese-cobalt oxide electrodes for supercapacitor applications
Chang, Jeng-Kuei
Lee, Ming-Tsung
Huang, Chiung-Hui
Tsai, Wen-Ta
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2008, 108 (01) : 124 - 131
[2] A facile one-step hydrothermal method to produce α-MnO2/graphene sheet composites and its electrochemical properties
Chen, Chunnian
Fu, Wen
Yu, Chenwei
[J]. MATERIALS LETTERS, 2012, 82 : 133 - 136
[3] From Graphene to Metal Oxide Nanolamellas: A Phenomenon of Morphology Transmission
Chen, Sheng
Zhu, Junwu
Wang, Xin
[J]. ACS NANO, 2010, 4 (10) : 6212 - 6218
[4] Graphene Oxide-MnO2 Nanocomposites for Supercapacitors
Chen, Sheng
Zhu, Junwu
Wu, Xiaodong
Han, Qiaofeng
Wang, Xin
[J]. ACS NANO, 2010, 4 (05) : 2822 - 2830
[5] Zinc Oxide/Reduced Graphene Oxide Composites and Electrochemical Capacitance Enhanced by Homogeneous Incorporation of Reduced Graphene Oxide Sheets in Zinc Oxide Matrix
Chen, Yan-Li
Hu, Zhong-Ai
Chang, Yan-Qin
Wang, Huan-Wen
Zhang, Zi-Yu
Yang, Yu-Ying
Wu, Hong-Ying
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (05) : 2563 - 2571
[6] MnO2-Based Nanostructures as Catalysts for Electrochemical Oxygen Reduction in Alkaline Media
Cheng, Fangyi
Su, Yi
Liang, Jing
Tao, Zhanliang
Chen, Jun
[J]. CHEMISTRY OF MATERIALS, 2010, 22 (03) : 898 - 905
[7] Globular reduced graphene oxide-metal oxide structures for energy storage applications
Chidembo, Alfred
Aboutalebi, Seyed Hamed
Konstantinov, Konstantin
Salari, Maryam
Winton, Brad
Yamini, Sima Aminorroaya
Nevirkovets, Ivan P.
Liu, Hua Kun
[J]. ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (01) : 5236 - 5240
[8] MnO2-embedded-in-mesoporous-carbon-wall structure for use as electrochemical capacitors
Dong, XP
Shen, WH
Gu, JL
Xiong, LM
Zhu, YF
Li, Z
Shi, JL
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (12) : 6015 - 6019
[9] The chemistry of graphene oxide
Dreyer, Daniel R.
Park, Sungjin
Bielawski, Christopher W.
Ruoff, Rodney S.
[J]. CHEMICAL SOCIETY REVIEWS, 2010, 39 (01) : 228 - 240
[10] Sustainable transportation based on electric vehicle concepts: a brief overview
Eberle, Ulrich
von Helmolt, Rittmar
[J]. ENERGY & ENVIRONMENTAL SCIENCE, 2010, 3 (06) : 689 - 699

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