A facile method to prepare a high performance solid-state flexible paper-based supercapacitor

作者：Shieh Jen Yu; Zhang Sheng Hui; Wu Cheng Hung; Yu Hsin Her^*

来源：Applied Surface Science, 2014, 313: 704-710.

DOI：10.1016/j.apsusc.2014.06.059

• Energy storage
• Carbon nanotubes
• Conductive paper
• Solid-state electrolyte
• Paper-based supercapacitor

We propose a low cost and simple method to prepare a paper-based supercapacitor in this study. Multi-walled carbon nanotubes (MWCNTs) were dispersed with a pectin solution under an ultrasonic homogenizer. Carbon nanotube suspension was prepared using a centrifuge to eliminate impurities. The dispersed MWCNTs suspension was dropped and dried onto the shallow surface of commercial copy paper. A paper-based conductive paper was formed as the electrodes. The electrical conductivity and dispersed morphology of the paper-based conductive paper were examined by four probes, atomic force microscope (AFM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The solid-state electrolyte was prepared by casting a solution of phosphoric acid and polyvinyl alcohol onto a glass plate. The paper-based supercapacitor was constructed with one solid-state electrolyte inserted between two electrodes, which were assembled into a sandwich structure by hot press. The specific capacitance and cycle-life stability of the paper-based supercapacitor was investigated by cyclic voltammetry analysis.

• 出版日期2014-9-15