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Electrochemically reduced graphene oxides/nanostructured iron oxides as binder-free electrodes for supercapacitors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yang, Qin Yung, Kam-Chuen Pecht, Michael |
| Copyright Year | 2017 |
| Abstract | Abstract In this work, a facile approach was applied to prepare composites of electrochemically reduced graphene (ecrGO) oxides and iron oxides (FeOx) as binder-free electrodes for enhancing the electrochemical performance of supercapacitors. The iron oxides were intercalated between the graphene oxides sheets to form sandwich-like composites, such composites were electrochemically reduced in an alkaline solution and directly used as electrodes without any binders. The as-obtained composite (ecrGO/FeOx) shows a good mechanical strength according to the SEM and Raman results, also exhibits high specific capacitance (Csp) of ∼235 F g−1 at a scan rate of 10 mV s−1 and good cycling stability of 92% retention after 2000 cycles in 1 M NaOH. Although there is a decline of Csp for the ecrGO/FeOx composite because of the high charge transfer resistance and poor conductivity of the iron oxides, it still possesses a higher Csp than ecrGO when the scan rate increases to 400 mV s−1. The relative high Csp and good stability of ecrGO/iron oxides composites due to the synergistic effect between ecrGO and iron oxides during the electrochemical processes, indicates it can be a promising candidate for supercapacitors. |
| Starting Page | 125 |
| Ending Page | 134 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.electacta.2017.02.045 |
| Alternate Webpage(s) | http://pcbtc-hkpu.org/wp-content/uploads/2019/10/Electrochemically-reduced-graphene-oxidesnanostructured-iron-oxides-as-binder-free-...-2017.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.electacta.2017.02.045 |
| Volume Number | 231 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
