Abstract
Polyaniline and graphene oxide composite on activated carbon cum reduced graphene oxide-supported supercapacitor electrodes are fabricated and electrochemically characterized in a three-electrode cell assembly. Attractive supercapacitor performance, namely high-power capability and cycling stability for graphene oxide/polyaniline composite, is observed owing to the layered and porous-polymeric-structured electrodes. Based on the materials characterization data in a three-electrode cell assembly, 1 V supercapacitor devices are developed and performance tested. A comparative study has also been conducted for polyaniline and graphene oxide/polyaniline composite-based 1 V supercapacitors for comprehending the synergic effect of graphene oxide and polyaniline. Graphene oxide/polyaniline composite-based capacitor that exhibits about 100 F g-1 specific capacitance with faradaic efficiency in excess of 90% has its energy and power density values of 14 Wh kg-1 and 72 kW kg-1, respectively. Cycle-life data for over 1000 cycles reflect 10% capacitance degradation for graphene oxide/polyaniline composite supercapacitor.
| Original language | English |
|---|---|
| Pages (from-to) | 1507-1517 |
| Number of pages | 11 |
| Journal | Bulletin of Materials Science |
| Volume | 38 |
| Issue number | 6 |
| DOIs | |
| State | Published - Oct 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© Indian Academy of Sciences.
Funding
We are grateful to the Department of Science & Technology, Government of India, for financial support. Deepak Kumar thanks University Grant Commission, New Delhi, for Dr D S Kothari Postdoctoral Fellowship (F.4-2/2006 (BSR)/13-899/2013).
| Funders | Funder number |
|---|---|
| Department of Science & Technology, Government of India | |
| University Grants Commission | F.4-2/2006 (BSR)/13-899/2013 |
Keywords
- Cycling stability
- Graphene oxide
- Polyaniline
- Pseudocapacitance
- Supercapacitor