| Full text | |
| Author(s): |
Alves, Ana Paula P.
;
Koizumi, Ryota
;
Samanta, Atanu
;
Machado, Leonardo D.
;
Singh, Abhisek K.
;
Galvao, Douglas S.
;
Silva, Glaura G.
;
Tiwary, Chandra S.
;
Ajayan, Pulickel M.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | NANO ENERGY; v. 31, p. 225-232, JAN 2017. |
| Web of Science Citations: | 30 |
| Abstract | |
Supercapacitor electrodes consisting of conjugated polymers (CP), metal oxides and graphene nanosheets have been explored as a strategy to achieve high specific capacitance, power, energy density, and stability. In this work, we synthesized a 3D structure composed of zirconia oxide nanoparticles (ZrO2), reduced graphene oxide (rGO) and polypyrrole (PPy), using a simple and easily scalable one-step chronopotentiometry method. Detailed characterization revealed that the addition of rGO and ZrO2 modified the morphology of the electrode material. The capacitance of the resulting architecture improved by up to a 100%. The ternary composite featured high stability, with an increase of 5% in capacitance after a thousand cycles. DFT and MD simulations were carried out in order to provide further insight on the role of zirconia. (AU) | |
| FAPESP's process: | 13/08293-7 - CCES - Center for Computational Engineering and Sciences |
| Grantee: | Munir Salomao Skaf |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |