Synthesis and characterization of MnO2-decorated graphene for supercapacitors

被引：87

作者：

Singu, Bal Sydulu ^{[1
]}

Yoon, Kuk Ro ^{[1
]}

机构：

[1] Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 305811, South Korea

来源：

ELECTROCHIMICA ACTA | 2017年 / 231卷

基金：

新加坡国家研究基金会;

关键词：

Graphene; Manganese Oxide; Supercapacitors; Nanocomposite; HIGH-PERFORMANCE SUPERCAPACITORS; FACILE SYNTHESIS; CARBON NANOTUBES; ELECTROCHEMICAL PERFORMANCES; OXIDE; ELECTRODES; COMPOSITES; NANOCOMPOSITES; REDUCTION; NANOPARTICLES;

D O I：

10.1016/j.electacta.2017.01.182

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report the simple one-step synthesis of a reduced graphene oxide-manganese oxide (rGO-MnO2) nanocomposite using graphene oxide (GO) and KMnO4 in the presence of sulfuric acid. The crystal structure, morphology, thermal, pore size, and other physical properties of the rGO-MnO2 nanocomposite were systematically analyzed by X-ray diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller analysis. XPS analysis confirmed the synthesis of exfoliated GO and rGO-MnO2 nanocomposite. The rGO-MnO2 nanocomposite exhibited a maximum specific capacitance, energy, and power density of 290 F g(-1), 25.7 Wh kg(-1), and 8008.7 W kg(-1), respectively, in a 1M Na2SO4 electrolyte, and a high retention (87.5%) of capacitance after 5000 cycles. The enhanced electrochemical properties are caused by good contact between MnO2 nanorods and graphene nanosheets, and the higher conductive and capacitive behavior of graphene. (C) 2017 Published by Elsevier Ltd.

引用

页码：749 / 758

页数：10

共 48 条

[1] Facile preparation of MnO2 nanorods and evaluation of their supercapacitive characteristics [J].

Aghazadeh, Mustafa ;

Asadi, Maryam ;

Maragheh, Mohammad Ghannadi ;

Ganjali, Mohammad Reza ;

Norouzi, Parviz ;

Faridbod, Farnoush .

APPLIED SURFACE SCIENCE, 2016, 364 :726-731

[2] Electrochemical preparation of MnO2 nanobelts through pulse base-electrogeneration and evaluation of their electrochemical performance [J].

Aghazadeh, Mustafa ;

Maragheh, Mohammad Ghannadi ;

Ganjali, Mohammad Reza ;

Norouzi, Parviz ;

Faridbod, Farnoush .

APPLIED SURFACE SCIENCE, 2016, 364 :141-147

[3] Flexible Graphene-Based Supercapacitors: A Review [J].

Chee, W. K. ;

Lim, H. N. ;

Zainal, Z. ;

Huang, N. M. ;

Harrison, I. ;

Andou, Y. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (08) :4153-4172

[4] Construction of unique cupric oxide-manganese dioxide core-shell arrays on a copper grid for high-performance supercapacitors [J].

Chen, Hao ;

Zhou, Ming ;

Wang, Tian ;

Li, Fei ;

Zhang, Yu Xin .

JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (28) :10786-10793

[5] Graphene Oxide-MnO2 Nanocomposites for Supercapacitors [J].

Chen, Sheng ;

Zhu, Junwu ;

Wu, Xiaodong ;

Han, Qiaofeng ;

Wang, Xin .

ACS NANO, 2010, 4 (05) :2822-2830

[6] High-Performance Supercapacitors Based on Intertwined CNT/V2O5 Nanowire Nanocomposites [J].

Chen, Zheng ;

Augustyn, Veronica ;

Wen, Jing ;

Zhang, Yuewei ;

Shen, Meiqing ;

Dunn, Bruce ;

Lu, Yunfeng .

ADVANCED MATERIALS, 2011, 23 (06) :791-+

[7] Graphene and nanostructured MnO2 composite electrodes for supercapacitors [J].

Cheng, Qian ;

Tang, Jie ;

Ma, Jun ;

Zhang, Han ;

Shinya, Norio ;

Qin, Lu-Chang .

CARBON, 2011, 49 (09) :2917-2925

[8] Synthesis and electrochemical properties of MnO2 nanorods/graphene composites for supercapacitor applications [J].

Deng, SiXu ;

Sun, Dan ;

Wu, ChunHui ;

Wang, Hao ;

Liu, JingBing ;

Sun, YuXiu ;

Yan, Hui .

ELECTROCHIMICA ACTA, 2013, 111 :707-712

[9] Approaching the theoretical capacitance of graphene through copper foam integrated three-dimensional graphene networks [J].

Dey, Ramendra Sundar ;

Hjuler, Hans Aage ;

Chi, Qijin .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (12) :6324-6329

[10] Synthesis of a MnO2-graphene foam hybrid with controlled MnO2 particle shape and its use as a supercapacitor electrode [J].

Dong, Xiaochen ;

Wang, Xuewan ;

Wang, Ling ;

Song, Hao ;

Li, Xingao ;

Wang, Lianhui ;

Chan-Park, Mary B. ;

Li, Chang Ming ;

Chen, Peng .

CARBON, 2012, 50 (13) :4865-4870

← 1 2 3 4 5 →