Nitrogen doped carbon nanowires prepared from polypyrrole nanowires for potential application in supercapacitors

摘要: Abstract We employ a direct carbonization method for preparation of nitrogen-doped carbon nanowires using polypyrrole as the precursor. Microstructural characterization indicates that specific surface area and nitrogen content depend strongly on temperature. As temperature increases from 650 °C to 950 °C (the molar ratio pyrrole hexadecyl trimethyl ammonium bromide is 3.4), doped 306.9 580.2 m2 g− 1; while, decreases 6.62 1.55 at.%. The 750 °C, which strikes balanced (405.6 m2 g− 1) (5.59 at.%), exhibiting excellent capacitance performance. It delivers large 207 F g− 1 at 1 A g− 1 in three electrode systems. also shows good cycle stability retention 98.5% over 5000 cycles) high energy density (13.2 Wh kg− 1 current 0.33 A g− 1 voltage window 0–1.5 V) symmetric two-electrode These features warrant potential useful material supercapacitors.