Conducting Polyaniline Nanowire Arrays Modified Electrode for High Performance Supercapacitor and Enhanced Catalysis of Nitrite Reduction |
| |
| Authors: | Ni Hui Jiasheng Wang Aiqin Liang Meilin Jiang |
| |
| Affiliation: | 1. College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao, P.?R. China;2. The people'Hospital of Chengyang, Qingdao, P.?R. China |
| |
| Abstract: | Vertically aligned conducting polymer nanowire arrays had great potential applications in supercapacitor electrode material and exhibited enhanced electrocatalytic behavior towards the reduction of nitrite. In this paper, a facial template‐free approach to synthesize large arrays of vertically aligned polyaniline (PANI) nanowires on electrochemically pretreated glassy carbon electrodes was reported by using a galvanostatic current method. The as‐prepared large arrays of PANI nanowires had very narrow diameters and were oriented perpendicular to the substrate, which was a benefit to the ion diffusion when being used as the supercapacitor electrode. The highest specific capacitance of PANI nanowire arrays was measured and kept high at a large charge‐discharge current density. Furthermore, it also can detect nitrite with ultrahigh sensitivity of 62.99 µA mM?1 cm?2 and a remarkable fast response time of less 1 s. The results indicated that the vertically aligned PANI nanowires could dramatically enhance the electrochemical performance. |
| |
| Keywords: | Conducting polymer Polyaniline nanowire array Supercapacitor Nitrite sensor |
|
|
