@Article{AlmeidaFerr:2020:StElAn,
               author = "Almeida, Dalva Alves de Lima and Ferreira, Neiden{\^e}i Gomes",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Fabrication of binary composites from polyaniline deposits on 
                         carbon fibers heat treated at three different temperatures: 
                         Structural and electrochemical analyses for potential application 
                         in supercapacitors",
              journal = "Materials Chemistry and Physics",
                 year = "2020",
               volume = "239",
                pages = "e122101",
                month = "Jan.",
             abstract = "Recent studies show that polyaniline (PAni) is one of the widely 
                         studied materials because it is easy synthesis, less cost, and low 
                         environmental pollution. Moreover, it presents a high theoretical 
                         specific capacitance as compared to carbon-based electrodes. 
                         Besides, when combined with materials such as porous carbon, 
                         graphene, carbon fiber, among others, the resulting electrodes 
                         composites present high electrochemical performance with feature 
                         commercially viable for practical application on supercapacitors. 
                         Carbon fibers (CF) heat-treated at three different temperatures of 
                         1000, 1500, and 2000 °C worked as a template matrix as well as 
                         substrates coated with polyaniline (PAni) films, by chemical 
                         polymerization of the aniline, to obtain binary composites called 
                         PAni/CF-1000, PAni/CF-1500, and PAni/CF-2000, respectively. 
                         Composite morphology characterizations were done by scanning 
                         electron microscopy and showed that CFs were fully coated by PAni. 
                         Structural analyses by Raman spectra presented characteristic 
                         bands of the emeraldine salt, confirming that PAni is in its 
                         conductive form. The results of electrochemical measurements 
                         showed that all composites presented capacitive profiles and good 
                         reversibility. Particularly, PAni/CF-1000 showed the greatest PAni 
                         growth on CF surface not to mention its largest charge storage 
                         capacity, with specific capacitance at around 224 F g\−1 
                         and 98% of coulombic efficiency after 1000 cycles.",
                  doi = "10.1016/j.matchemphys.2019.122101",
                  url = "http://dx.doi.org/10.1016/j.matchemphys.2019.122101",
                 issn = "0254-0584",
             language = "en",
           targetfile = "almeida_fabrication.pdf",
        urlaccessdate = "01 maio 2024"
}