Hydrothermal Self-assembly Synthesis of Mn3O4/Reduced Graphene Oxide Hydrogel and Its High Electrochemical Performance for Supercapacitors

被引：55

作者：

Li, Li ^{[1
]}

Hu, Zhongai ^{[1
]}

Yang, Yuying ^{[1
]}

Liang, Pengju ^{[2
]}

Lu, Ailian ^{[1
]}

Xu, Huan ^{[1
]}

Hu, Yingying ^{[1
]}

Wu, Hongying ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Related Polymer Mat, Key Lab Polymer Mat Gansu Prov,Minist Educ, Lanzhou 730070, Gansu, Peoples R China

[2] Tarim Univ, Dept Chem & Chem Engn, Coll Life Sci, Alar 843300, Xinjiang, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2013年 / 31卷 / 10期

基金：

中国国家自然科学基金;

关键词：

reduced graphene oxide; Mn3O4; self-assembly; hydrogel; supercapacitor; GRAPHITE OXIDE; CHEMICAL-REDUCTION; MN3O4; COMPOSITES; ELECTRODES; DEPOSITION; CONVERSION; RAMAN; MNO2; NANOPARTICLES;

D O I：

10.1002/cjoc.201300324

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present work Mn3O4/reduced graphene oxide hydrogel (Mn3O4-rGOH) with three dimensional (3D) networks was fabricated by a hydrothermal self-assembly route. The morphology, composition, and microstructure of the as-obtained samples were characterized using powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetry analysis (TG), atomic absorption spectrometry (AAS), field emission scanning electron microscopy (FESEM) and transmission electron microscope (TEM). Moreover, the electrochemical behaviors were evaluated by cyclic voltammogram (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS). The test results indicated that the hydrogel with 6.9% Mn3O4 achieved specific capacitance of 148 F.g(-1) at a specific current of 1 A.g(-1), and showed excellent cycling stability with no decay after 1200 cycles. In addition, its specific capacitance could retain 70% even at 20 A.g(-1) in comparison with that at 1 A.g(-1) and the operating window was up to 1.8 V in a neutral electrolyte.

引用

页码：1290 / 1298

页数：9

共 60 条

[1] Hydrothermal synthesis of Mn(OH)O nanowires and their thermal conversion to (1D)-manganese oxides nanostructures [J].