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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Tiwari, Santosh Kumar Adhikari, Amrita De Bhattacharyya, Srijit Oraon, Ramesh Nayak, Ganesh Chandra |
| Copyright Year | 2016 |
| Abstract | A series of self-assembled and open interconnected mesoporous CNT/polyindole (Pind) electrodes were synthesized by a facile in situ & ex situ approach in the presence of layered silicate material. In the present study, the presence of nanoclay and its electrochemical performance is explored on the imparted hierarchical structure of CNT/Pind (CI) system. The microstructural evolution and coating of Pind on CNT and the nanoclay sheet revealed the formation of a high surface area interconnected mesoporous structure which can efficiently allow easy penetration and rapid transport of electrolyte ions for an improved electrochemical performance. Cyclic voltammetry (CV) analysis at 10 mV s−1 revealed the in situ and ex situ incorporation of the nanoclay to the CNT/Pind system exhibited a 258% and 136% increase in the specific capacitance of the ternary nanocomposite, respectively. These observations were very consistent with the 148% increased specific capacitance of NI (nanoclay/Pind) as compared to Pind. Galvanostatic charging–discharging (GCD) and electrochemical impedance spectroscopy (EIS) also confirmed the improved electronic conductivity and cyclic stability of electrode material. In situ CNI (i.e. CNT/nanoclay/Pind) displayed a better electrochemical performance than ex situ CIN (i.e. CNT/Pind/nanoclay) and other related systems. That the electrode exhibited 96% of the initial specific capacitance retention after 2000 cycles also suggests a high cyclic stability and power delivery uptake of electrode material. It is believed that a nanoclay tailored CNT/Pind nanocomposite can effectively promote their high utilization for SC application. |
| Starting Page | 64271 |
| Ending Page | 64284 |
| Page Count | 14 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 69 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra12938b |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Cyclic voltammetry Mesoporous material Spectroscopy Silicate Electrode Electrolyte CNT Electrochemistry Capacitance Nanocomposite EIS Electrical impedance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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