| Synthesis of hydrothermally reduced graphene/MnO2 composites and their electrochemical properties as supercapacitors | |
| Department | 固体润滑国家重点实验室 |
Li ZP(李章朋); Wang JQ(王金清) ; Liu S(刘胜); Liu XH(刘晓红); Yang SR(杨生荣)
| |
| 2011 | |
| Source Publication | Journal of Power Sources
 |
| ISSN | 0378-7753 |
| Volume | 196Pages:8160-8165 |
| Abstract | Hydrothermally reduced graphene/MnO2 (HRG/MnO2) composites were synthesized by dipping HRG into the mixed aqueous solution of 0.1 M KMnO4 and 0.1 M K2SO4 for different periods of time at room temperature. The morphology and microstructure of the as-prepared composites were characterized by field-emission scanning electron microscopy, X-ray diffraction, Raman microscope, and X-ray photoelec- tron spectroscopy. The characterizations indicate that MnO2 successfully deposited on HRG surfaces and the morphology of the HRG/MnO2 shows a three-dimensional porous structure with MnO2 homoge- nously distributing on the HRG surfaces. Capacitive properties of the synthesized composite electrodes were studied using cyclic voltammetry and electrochemical impedance spectroscopy in a three-electrode experimental setup using 1 M Na2SO4 aqueous solution as electrolyte. The main results of electrochem- ical tests are drawn as followsthe specific capacitance value of HRG/MnO2–200 (HRG dipped into the mixed solution of 0.1 M KMnO4 and 0.1 M K2SO4 for 200 min) electrode reached 211.5 F g−1 at a potential scan rate of 2 mV s−1; moreover, this electrode shows a good cyclic stability and capacity retention. It is anticipated that the synthesized HRG/MnO2 composites will find promising applications in superca- pacitors and other devices in virtue of their outstanding characters of good cycle stability, low cost and environmentally benign nature. |
| Keyword | Graphene Mno2 Composite Supercapacitor |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the National Natural Science Foundation of China (Grant Nos. 20823008;51075384);“Top Hundred Talents Program” of Chinese Academy of Sciences |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 聚合物摩擦学组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/2466 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang JQ(王金清); Yang SR(杨生荣) |
| Recommended Citation GB/T 7714 | Li ZP,Wang JQ,Liu S,et al. Synthesis of hydrothermally reduced graphene/MnO2 composites and their electrochemical properties as supercapacitors[J]. Journal of Power Sources,2011,196:8160-8165. |
| APA | 李章朋,王金清,刘胜,刘晓红,&杨生荣.(2011).Synthesis of hydrothermally reduced graphene/MnO2 composites and their electrochemical properties as supercapacitors.Journal of Power Sources,196,8160-8165. |
| MLA | 李章朋,et al."Synthesis of hydrothermally reduced graphene/MnO2 composites and their electrochemical properties as supercapacitors".Journal of Power Sources 196(2011):8160-8165. |
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| 20118160-8165.PDF（1156KB） | 开放获取 | License | View Application Full Text | |||
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