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@Article{SilvaPiRoBaTrCo:2018:GrShPr,
               author = "Silva, Amanda Ara{\'u}jo and Pinheiro, Rom{\'a}rio Ara{\'u}jo 
                         and Rodrigues, Aline Castilho and Baldan, Maur{\'{\i}}cio 
                         Ribeiro and Trava-Airoldi, Vladimir Jesus and Corat, Evaldo 
                         Jos{\'e}",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Graphene sheets produced by carbon nanotubes unzipping and their 
                         performance as supercapacitor",
              journal = "Applied Surface Science",
                 year = "2018",
               volume = "446",
               number = "esp.",
                pages = "201--208",
                month = "July",
             keywords = "Graphene, Unzipped carbon nanotubes, Micro-wave chemical vapor 
                         deposition.",
             abstract = "Carbon nanotubes (CNTs) are well known by their unique properties, 
                         such as high electrical conductivity and chemical stability, which 
                         can improve charge transfer, facilitating double layer charging in 
                         supercapacitor devices. In this work we report on a simple method 
                         to unzip CNTs, producing graphene sheets. The amount of hydrogen 
                         atoms in the nanotubes synthesis by micro-wave chemical vapor 
                         deposition is a critical parameter for unzipping process. High 
                         crystalline quality graphene sheets are obtained by this method 
                         because of the sp(2) bonds sensibility to hydrogen ions 
                         reactivity. Unzipped CNTs provided higher capacitance values 
                         without an increase in pseudocapacitance. The resulting structure 
                         presented an increase in double-layer charging, suggesting a 
                         material with good electron transfer rate. This new synthesis 
                         method is promising for obtainment of graphene sheets from carbon 
                         nanotubes. Besides, unzipped carbon nanotubes presented themselves 
                         to be a good alternative for supercapacitors electrodes 
                         material.",
                  doi = "10.1016/j.apsusc.2018.01.214",
                  url = "http://dx.doi.org/10.1016/j.apsusc.2018.01.214",
                 issn = "0169-4332",
             language = "en",
           targetfile = "silva_graphene.pdf",
        urlaccessdate = "01 dez. 2020"
}


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