Preparation of high specific surface area composite carbon cryogels from self-assembly of graphene oxide and resorcinol monomers for supercapacitors
| Autor: | Hongbo Liu, Xuefang Zhang, Yuxi Chen, Li Yang, Yuede He, Shangqi Yi, Hui Chen, Xiaohong Xia |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Composite number Oxide chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Specific surface area Electrochemistry General Materials Science Electrical and Electronic Engineering Porosity Supercapacitor Graphene 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry Chemical engineering Self-assembly 0210 nano-technology Carbon |
| Zdroj: | Journal of Solid State Electrochemistry. 20:1793-1802 |
| ISSN: | 1433-0768 1432-8488 |
| DOI: | 10.1007/s10008-016-3196-5 |
| Popis: | Three-dimensional grapheme-doped carbon cryogels (CCs) with high specific surface area have been prepared via the self-assembly of graphene oxide (GO) sheets and resorcinol (R)-formaldehyde (F) monomers. The porosity of the composite CCs can be regulated from high mesoporosity to microporosity by adjusting the mass ratio of GO sheets to RF monomers. When the loading amount of GO sheets is 1.3 wt.% in the precursor mixture, the specific surface area of the resulting composite CCs is up to 1178 m2 g−1, which is much higher than that of the neat RF CCs (766 m2 g−1). Furthermore, the as-prepared composite CC electrode displays a high specific capacitance (205 F g−1 at 1.0 mV s−1) and superior rate capability compared to the neat RF CCs. |
| Databáze: | OpenAIRE |
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