The prime objective of the present article is to develop an efficient supercapacitor based on polymer electrolyte doped with salt. Solution cast technique was adopted to develop a solid polymer electrolyte of polymer poly(methyl methacrylate) (PMMA) as host polymer and salt potassium hydroxide (KOH) as a dopant. Incorporation of salt increases the amorphicity and assisted in conductivity enhancement. Moreover, doping of salt increases the overall conductivity of polymer electrolyte film. Electrochemical impedance spectroscopy reveals the enhancement in conductivity (four orders of magnitude) by salt doping. Fourier transform infrared shows the complexation and composite nature of films. Polarized optical microscopy shows the reduction in crystallinity, which is further confirmed by Differential scanning calorimetry. Fabricated electrochemical double-layer supercapacitor using maximum conducting polymer—salt electrolyte and symmetric carbon nanotubes electrodes shows specific capacitance of 21.86 F g−1.

中文翻译：

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使用聚甲基丙烯酸甲酯固体聚合物电解质的电化学双层超级电容器

本文的主要目的是开发一种基于聚合物电解质掺杂盐的高效超级电容器。采用溶液浇铸技术开发了聚合物聚甲基丙烯酸甲酯（PMMA）作为主体聚合物和氢氧化钾（KOH）作为掺杂剂的固体聚合物电解质。盐的加入增加了非晶性并有助于提高电导率。此外，盐的掺杂增加了聚合物电解质膜的整体电导率。电化学阻抗谱揭示了盐掺杂可提高电导率（四个数量级）。傅里叶变换红外显示薄膜的络合和复合性质。偏光显微镜显示结晶度降低，差示扫描量热法进一步证实了这一点。