Centro de Tecnologia
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Article NiO-CGO Composite for SOFC Anode: Synthesis and Characterization(Journal of Materials Science and Engineering, 2010) Cela, Beatriz; Macedo, Daniel Araújo de; Souza, Graziele Lopes de; Miranda, Auristela Carla de; Martinelli, Antonio Eduardo; Nascimento, Rubens Maribondo do; Paskocimas, Carlos AlbertoArticle Electrical conductivity and microstructure of NiO-CGO composites prepared by one-step synthesis(IOP Publishing, 2013-04-01) Nascimento, Rubens Maribondo do; Macedo, Daniel Araújo de; Figueiredo, Filipe Miguel Lebre; Patrício, Sónia Gonçalves; Martinelli, Antonio Eduardo; Paskocimas, Carlos Alberto; Marques, Fernando Manuel BicoThe correlation between the microstructure and electrical properties of NiO-Ce0.9Gd0.1O1.95 (NiO-CGO) composites prepared by a one-step synthesis method is reported in the present work, and compared to conventional samples synthesized by mechanically mixing commercial powders. Samples sintered between 1350 and 1450 °C had their microstructures and electrical properties investigated by scanning electron microscopy (SEM) and impedance spectroscopy. The total electrical conductivity in the range of 100 – 500 °C of one-step composites is more than one order of magnitude higher than for conventional material. This result is associated to the presence of a network of well-connected and homogeneously distributed NiO grains shown by SEM for the one-step composite, which is responsible for its improved percolative behavior and lower activation energy (0.24 eV at 250 – 650 °C).Article Citrate–hydrothermal synthesis, structure and electrochemical performance of La0.6Sr0.4Co0.2Fe0.8O3−δ cathodes for IT-SOFCs(Elsevier, 2013) Garcia, Laurênia Martins Pereira; Macedo, Daniel Araújo de; Souza, Graziele L.; Motta, Fabiana Villela da; Paskocimas, Carlos Alberto; Nascimento, Rubens Maribondo doArticle Presence of excited electronic states on terbium incorporation in CaMoO4: Insights from experimental synthesis and first-principles calculations(Elsevier, 2021-02) Tranquilin, Ricardo Luis; Oliveira, Marisa Carvalho de; Santiago, Anderson de Azevedo Gomes; Lovisa, Laura Ximena; Ribeiro, Renan Augusto Pontes; Silva, Elson Longo da; Lazaro, Sergio R. de; Almeida, Cláudio Romero Rodrigues de; Paskocimas, Carlos Alberto; Motta, Fabiana Villela da; Delmonte, Maurício Roberto BomioArticle Charge density alterations in human hair fibers: an investigation using electrostatic force microscopy(Society of Cosmetic Scientists and the Société Française de Cosmétologie, 2006-03-28) Longo, V. M.; Monteiro, V. F.; Pinheiro, A. S.; Terci, D.; Vasconcelos, J. S.; Paskocimas, Carlos Alberto; Leite, E. R.; Silva, Elson Longo da; Varela, A.Ce travail présente une nouvelle méthodologie pour analiser la densité de charge superficielle à température ambiante avec une grande resolution. La microscopie à force électrostatique (EFM) a eté utilisée pour mesurer la densité de charge supeficielle des cheveux vierges, décolorés et traités avec un polymer cationique. La technique de microscopie à force atomique (AFM) a eté utilisée simultanément pour évaluer les changements de morphologie, de rugosité et d’épaisseur des cuticules. Les images EFM nous ont permis de visualiser la dègradation et la distribution du polymère sur la superficie des cheveux. Grâce à la puissance analytique de l'image EFM, les différents degrés d'altération des fibres capilaires avec le polymère ont pu être observés. Les images de la densité de charge superficielle et de la distribution du polymère sur la surface des cheveux ont été présentées à la lumière de l'EFMArticle Bi4Ti3O12 multilayered ceramic tapes produced by aqueous tape casting and laminating process: structural and dielectric properties(Elsevier, 2018-09) Paskocimas, Carlos Alberto; Peres, Ana Paula da Silva; Costa, Antonio Carlos Silva da; Bohn, Felipe; Correa, Marcio Assolin; Acchar, WilsonArticle Synthesis and characterization of Y (In, Mn) O3 blue pigment using the complex polymerization method (CPM)(Elsevier, 2018-08) Paskocimas, Carlos Alberto; Gomes, Yara Feliciano; Lib, Jun; Silva, K. F.; Santiago, Anderson de Azevedo Gomes; Delmonte, Maurício Roberto Bomio; Subramanian, Munirpallam A.; Motta, Fabiana Villela daArticle Yellow ZnxNi1−xWO4 pigments obtained using a polymeric precursor method(Elsevier, 2007-05-25) Oliveira, André Luiz M. de; Ferreira, Jailson M.; Silva, Maria Rita de Cássia; Braga, Glauco Soares; Soledade, Luiz Edmundo Bastos; Aldeiza, M. A. Maurera Maria; Paskocimas, Carlos Alberto; Lima, Severino Jackson Guedes; Silva, Elson Longo da; Souza, Antônio Gouveia de; Santos, Ieda Maria Garcia dosArticle Influence of doping on the preferential growth of α-MoO3(Elsevier, 2008-07-14) Pereira, Luiza G.; Soledade, Luiz Edmundo Bastos; Ferreira, Jailson M.; Lima, Severino Jackson Guedes; Fernandes Júnior, Valter José; Araújo, Antônio Souza de; Paskocimas, Carlos Alberto; Silva, Elson Longo da; Santos, Maria Rita de Cássia; Souza, Antônio Gouveia de; Santos, Ieda Maria Garcia dosArticle Photoluminescent properties of the Ba1−xZnxMoO4 heterostructure obtained by ultrasonic spray pyrolysis(Elsevier, 2018-03) Paskocimas, Carlos Alberto; Santiago, Anderson de Azevedo Gomes; Almeida, Cláudio Romero Rodrigues de; Tranquilin, Ricardo Luis; Nascimento, Rubens Maribondo do; Silva, Elson Longo da; Motta, Fabiana Villela da; Bomio, Mauricio Roberto Bomio