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Low Temperature Synthesis of MnO2/Graphene Nanocomposites for Supercapacitors
Huang, Hao1; Sun, Guangren1; Hu, Jie1,2; Jiao, Tifeng2,3
2015
Source PublicationJOURNAL OF CHEMISTRY
ISSN2090-9063
Issue1Pages:629362
Abstract

MnO2/graphene nanocomposites were synthesized through a simple route in a water-reflux condenser system. The as-prepared composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman microscope, and Brunauer-Emmett-Teller surface area analysis. Capacitive properties of the synthesized composite electrodes were investigated via cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectrometry in a 0.5M Na2SO4 electrolyte. Results show that this method can control the morphology and structure of MnO2 loaded onto the graphene sheets. Because excessive MnO2 enwrapping graphene would affect the overall conductivity, the composite prepared by lower temperature has better characteristics of supercapacitor. 60-MnO2/graphene composite (48 wt% MnO2) displays the specific capacitance as high as 350 F/g at 1000 mA/g, which is higher than that of 100-MnO2/graphene (302 F/g), and it is almost two times higher than that of MnO2 (163 F/g). Furthermore, the composite exhibits excellent long cycle life along with similar to 93% specific capacitance retained after 5000 cycle tests.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1155/2015/629362
Indexed BySCI
Language英语
WOS KeywordELECTROPHORETIC DEPOSITION ; CARBON NANOTUBES ; HIGH-PERFORMANCE ; GRAPHENE ; ELECTRODES ; FILMS ; CAPACITORS ; OXIDE
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000357811100001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19386
Collection生化工程国家重点实验室
Affiliation1.Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
2.Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Huang, Hao,Sun, Guangren,Hu, Jie,et al. Low Temperature Synthesis of MnO2/Graphene Nanocomposites for Supercapacitors[J]. JOURNAL OF CHEMISTRY,2015(1):629362.
APA Huang, Hao,Sun, Guangren,Hu, Jie,&Jiao, Tifeng.(2015).Low Temperature Synthesis of MnO2/Graphene Nanocomposites for Supercapacitors.JOURNAL OF CHEMISTRY(1),629362.
MLA Huang, Hao,et al."Low Temperature Synthesis of MnO2/Graphene Nanocomposites for Supercapacitors".JOURNAL OF CHEMISTRY .1(2015):629362.
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