Highly Flexible and Planar Supercapacitors Using Graphite Flakes/Polypyrrole in Polymer Lapping Film

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• 作者：C. Justin Raj ; Byung Chul Kim ; Won-Je Cho ; Won-gil Lee ; Sang-Don Jung ; Yong Hee Kim ; Sang Yeop Park ; Kook Hyun Yu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：June 24, 2015
• 年：2015
• 卷：7
• 期：24
• 页码：13405-13414
• 全文大小：708K
• ISSN：1944-8252

文摘

Flexible supercapacitor electrodes have been fabricated by simple fabrication technique using graphite nanoflakes on polymer lapping films as flexible substrate. An additional thin layer of conducting polymer polypyrrole over the electrode improved the surface conductivity and exhibited excellent electrochemical performances. Such capacitor films showed better energy density and power density with a maximum capacitance value of 37 mF cm^鈥? in a half cell configuration using 1 M H₂SO₄ electrolyte, 23 mF cm^鈥? in full cell, and 6 mF cm^鈥? as planar cell configuration using poly(vinyl alcohol) (PVA)/phosphoric acid (H₃PO₄) solid state electrolyte. Moreover, the graphite nanoflakes/polypyrrole over polymer lapping film demonstrated good flexibility and cyclic stability.