Smart and designable graphene–SiO2 nanocomposites with multifunctional applications in silicone elastomers and polyaniline supercapacitors
| Autor: | Kai Gong, Yang Cheng, Hu Yingqian, Jian-Xiong Jiang, Xin Wang, Jirong Wu, Qingli Hao, Risheng Liu, Hualan Wang, Zhifang Li |
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| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
chemistry.chemical_classification Nanocomposite Materials science Polymer nanocomposite Graphene General Chemical Engineering 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Polyaniline Ultimate tensile strength Lamellar structure Composite material 0210 nano-technology |
| Zdroj: | RSC Advances. 7:11478-11490 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra00262a |
| Popis: | A novel method was developed to promote the multifunctional applications of chemically reduced graphene (rGE) in silicone elastomers (SE) and polyaniline (PANI)-based supercapacitors via the integration of SiO2. With the help of SiO2, the surface status of rGE can be designed according to actual needs and the generated rGE–SiO2 (rGES) showed various microstructures including lamellar, dendritic and sandwich-like shapes. The microstructures of rGES played a decisive role in the final functions of rGES-based polymer nanocomposites, which were better than the rGE-based polymer matrixes. Generally, lamellar rGES retained and stimulated the advantages of rGE, and the rGES-integrated PANI electrode (rGESP) showed better specific capacitance (555 F g−1) and cycling life (91%) than the rGE-integrated PANI electrode (381 F g−1 and 79%). Sandwich-like rGES promoted the mechanical performances of SE, and the values of rGES/SE (rGESSE) are ten times higher than those of rGE/SE, from 0.4 MPa to more than 7 MPa for the tensile strength and from 0.28 MPa to 3.7 MPa for the tensile modulus. Thus, the fabricated rGES is smart and designable, displaying multiple functions and applications. |
| Databáze: | OpenAIRE |
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