A cross-linked sheet structured poly(3, 4-ethylenedioxythiophene) grown on Ni foam: Morphology control and application for long-life cyclic asymmetric supercapacitor. (28th February 2020)

• Record Type: Journal Article
• Authors: Liu, Guijing; Shi, Yanying; Zhou, Can; Li, Bei; Zhou, Xueyan; Li, Meng; Jin, Rencheng; Gao, Shanming
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 11(2020)
• Page Start: 6120
• Page End: 6127
• Publication Date: 2020-02-28
• Subjects: Poly(3, 4-ethylenedioxythiophene) -- Electrodeposition -- Asymmetric device -- Surfactant; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.12.172
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this work, a cross-linked sheet structured conducting polymer ploy(3, 4-ethylenedioxythiophene) (PEDOT) decorated on Ni foam is synthesized via one-step electrodeposition using the sodium p-toluenesulfonate (STSA) as surfactant and applied for supercapacitor electrode. The surfactants play a vital role in controlling the morphologies of PEDOT leading to the electrochemical performance difference. The optimized PEDOT electrode exhibits the highest capacitance of 711.6 mF cm −2 at 3.0 mA cm −2 in the three-electrode system. An asymmetric device (PEDOT/STSA//AC) is constructed by PEDOT/STSA (the positive electrode), activated carbon (AC) (the negative electrode) as well as 1 M Na2 SO4 (the electrolyte). The device has been worked in a high-voltage range of 0–1.5 V, which displays the satisfied energy density of 14.0 Wh·kg −1 at 535.5 W kg −1 . Furthermore, the PEDOT/STSA//AC device presents excellent rate capability and long-time cyclic stability. Graphical abstract: In this work, different structured conducting polymers-ploy(3, 4-ethylenedioxythiophene) (PEDOT) decorated on Ni foam have been synthesized via one-step electrodeposition using various surfactants. Image 1 Highlights: A cross-linked sheet structured PEDOT is directly decorated on Ni foam. PEDOTs are synthesized by one-step electrodeposition using different surfactants. The optimized PEDOT electrode exhibits the highest capacitance of 711.6 mF cm −2 . The asymmetric device shows a remarkable cycle durability.