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首页> 外文期刊>RSC Advances >Free-standing polyaniline-porous carbon nanofiber electrodes for symmetric and asymmetric supercapacitors
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Free-standing polyaniline-porous carbon nanofiber electrodes for symmetric and asymmetric supercapacitors

机译：用于对称和不对称超级电容器的独立式聚苯胺多孔碳纳米纤维电极

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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 for high-performance supercapacitors. The effect of polymerization time on the electrode performance was studied by using symmetric cell configuration. Because of the high faradic current and good charge transfer between PCNFs and PANI, a maximum specific capacitance of 296 F g(-1) and excellent rate performance were achieved for PANI-PCNF electrodes. PANI-PCNF electrodes also showed good capacitance retention (98%) after 1000 charge-discharge cycles. Furthermore, an asymmetric cell was successfully fabricated by using PANI-PCNF as the positive electrode and PCNFs as the negative electrode. Energy density and power density were improved significantly by using the asymmetric cell configuration. The resultant PANI-PCNF//PCNF asymmetric supercapacitor exhibited an energy density of 353 W h kg(-1) with the power density of 609 W kg(-1) at a current density of 1 A g(-1).
机译：聚苯胺（PANI）-多孔碳纳米纤维（PCNF）复合材料是通过在PCNF上进行苯胺原位聚合而生成的，用作高性能超级电容器的柔性无粘合剂电极。通过使用对称电池配置研究聚合时间对电极性能的影响。由于高的法拉第电流和PCNFs与PANI之间的良好电荷转移，PANI-PCNF电极可实现296 F g（-1）的最大比电容和出色的倍率性能。 PANI-PCNF电极在1000次充放电循环后也显示出良好的电容保持率（98％）。此外，通过使用PANI-PCNF作为正电极和PCNFs作为负电极成功地制备了不对称电池。通过使用非对称电池配置，能量密度和功率密度显着提高。所得的PANI-PCNF // PCNF不对称超级电容器在1 A g（-1）的电流密度下显示的能量密度为353 W h kg（-1），功率密度为609 W kg（-1）。

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