Application of Atmospheric-Pressure-Plasma-Jet Modified Flexible Graphite Sheets in Reduced-Graphene-Oxide/Polyaniline Supercapacitors

Polymers

Yu-Chuan Hao¹  Ing-Song Yu¹  Nurzal Nurzal¹  Cheng-Chen Yang²  Jian-Zhang Chen³  Chen-Yu Liao³  Fei-Hong Kuok³  Hung-Hua Chien³ 

[1] Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan;Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan;Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;

关键词: polyaniline;    reduced graphene oxide;    atmospheric pressure plasma;    supercapacitor;    graphite sheet;   

DOI  :  10.3390/polym12061228

来源: DOAJ

【 摘 要 】

In this study, flexible and low-cost graphite sheets modified by atmospheric pressure plasma jet are applied to reduced-graphene-oxide/polyaniline supercapacitors. Surface treatment by atmospheric pressure plasma jet can make the hydrophobic surface of graphite into a hydrophilic surface and improve the adhesion of the screen-printed reduced-graphene-oxide/polyaniline on the graphite sheets. After the fabrication of reduced-graphene-oxide/polyaniline supercapacitors with polyvinyl alcohol/H₂SO₄ gel electrolyte, pseudo-capacitance and electrical double capacitance can be clearly identified by the measurement of cyclic voltammetry. The fabricated supercapacitor exhibits specific capacitance value of 227.32 F/g and areal capacitance value of 28.37 mF/cm² with a potential scan rate of 2 mV/s. Meanwhile, the capacitance retention rate can reach 86.9% after 1000-cycle cyclic voltammetry test. A light-emitting diode can be lit by the fabricated reduced-graphene-oxide/polyaniline supercapacitors, which confirms that the supercapacitors function well and can potentially be used in a circuit.

【 授权许可】

Unknown