Development of supercapacitor systems based on binary and ternary nanocomposites using chitosan, graphene and polyaniline

• Published in: Chemical Data Collections 2018-12, Vol.17-18, p.459-471
• Main Authors: Torvi, Anand, Naik, Satishkumar, Kariduraganavar, Mahadevappa
• Format: Article
• Language: English
• Subjects: Chitosan; Electrical conductivity; Graphene; Polyaniline; Supercapacitor
• ISSN: 2405-8300; 2405-8300
• DOI: 10.1016/j.cdc.2018.11.003

•A series of binary (chitosan-polyaniline) and ternary (chitosan-graphene-polyaniline) nanocomposites have been developed via in-situ polymerization of aniline.•The molar ratio of polyaniline and mass ratio graphene were tuned in order to achieve high electrical conductivity.•Among the composites, CG3P and CP5 demonstrated excellent electrochemical performance with maximum specific capacitance of 1519 and 939 F g−1, respectively.•The CG3P composite retained 88% of initial capacitance, indicating excellent cycle life stability. Present work describes the preparation of series of binary (chitosan-polyaniline, CP1 to CP7) and ternary (chitosan-graphene-polyaniline, CG1P to CG5P) composites via in-situ polymerization of aniline. The physico-chemical properties of the developed composites were studied. The electrical conductivity of all the composites was measured using four-probe method, and found that among the composites CP5 and CG3P composites showed an excellent electrical conductivity as high as 4.165 × 10−1 and 2.9745 S cm−1, respectively. The electrochemical performance was systematically investigated. Electrochemical measurements indicated that the specific capacitance of CG3P composite was found to be 1519 F g−1 at a scan rate of 5 mV s−1 in 1 M H2SO4 electrolyte solution, which is remarkably higher than those of pure PANI (495 F g−1) and CP5 (939 F g−1). Further, it is found that 88% of the initial capacitance of CG3P was retained after repeating 1000 cycles, which demonstrates the excellent cycle life stability. [Display omitted]