Free-standing polyaniline–porous carbon nanofiber electrodes for symmetric and asymmetric supercapacitors

摘要: Polyaniline (PANI)–porous carbon nanofiber (PCNF) composites were generated by in situ polymerization of aniline on PCNFs for use as flexible, binder-less electrodes high-performance supercapacitors. The effect time the electrode performance was studied using symmetric cell configuration. Because high faradic current and good charge transfer between PANI, a maximum specific capacitance 296 F g−1 excellent rate achieved PANI–PCNF electrodes. also showed retention (98%) after 1000 charge–discharge cycles. Furthermore, an asymmetric successfully fabricated positive negative electrode. Energy density power improved significantly resultant PANI–PCNF//PCNF supercapacitor exhibited energy 353 W h kg−1 with 609 at 1 A g−1.