Use of manganese dioxide as oxidant in polymerization of aniline on carbon black for supercapacitor performance. (December 2016)

• Record Type: Journal Article
• Authors: Liu, Zhisen; Li, Zesheng; Li, Dehao; Yin, Xudong; Liu, Zhenghui
• Is Part Of: High performance polymers. Volume 28:Number 10(2016)
• Page Start: 1105
• Page End: 1113
• Publication Date: 2016-12
• Subjects: Supercapacitor -- MnO2 -- PANI -- carbon black; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008315620289
• Languages: English
• ISSNs: 0954-0083

Abstract

Α-Manganese dioxide (MnO2 ) and β-MnO2 have been prepared by a simple one-step hydrothermal synthesis method. Polyaniline (PANI)/carbon black composites were synthesized in acidic medium by an in situ polymerization method using α-MnO2, β-MnO2, and ammonium peroxydisulfate (APS) as chemical oxidant. The morphology, structure, and electrochemical performances are characterized by X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, cyclic voltammetry, charge–discharge test, and electrochemical impedance measurements. The PANI/carbon black composite (PANI/C-2) prepared using β-MnO2 as oxidant shows significantly better specific capacity performance compared with those prepared using α-MnO2 and APS as oxidant. Addition of carbon black into the PANI composites prepared via the conventional polymerization method showed improved specific capacitance.