GI- Quimolmat - Artigos: Envíos recentes

Mostrando ítems 96-100 de 104

    • Layered LiNi0.5Co0.5O2 cathode materials grown by soft-chemistry via various solution methods 

      Julien, C.; Letranchant, C.; Rangan, S.; Lemal, M.; Ziolkiewicz, S.; Castro-García, Socorro; El-Farh, L.; Benkaddour, M. (Elsevier, 2000-07)
      [Abstract] The lithiated nickel–cobalt oxide LiNi0.5Co0.5O2 used as cathode material was grown at low-temperature using different aqueous solution methods. The wet chemistry involved the mixture of metal salts (acetates ...

    • LiCo1−yMyO2 positive electrodes for rechargeable lithium batteries: II. Nickel substituted materials grown by the citrate method 

      Julien, C.; Amdouni, A.; Castro-García, Socorro; Selmane, M.; Rangan, S. (Elsevier, 2006-03)
      [Abstract] The layered LiCo1−yNiyO2 microcrystalline powders were synthesized by a sol–gel method using citric acid as a chelating agent in the range 0.2 ≤ y ≤ 0.8. Submicron-sized particles of the precursor were obtained ...

    • A simple solvothermal synthesis of MFe2O4 (M=Mn, Co and Ni) nanoparticles 

      Yáñez Vilar, Susana; Sánchez-Andújar, Manuel; Gómez Aguirre, Lilián Claudia; Mira Pérez, Jorge; Señarís-Rodríguez, M. A.; Castro-García, Socorro (Elsevier, 2009-10)
      [Abstract] Nanoparticles of MFe2O4 (M=Mn, Co and Ni), with diameters ranging from 5 to 10 nm, have been obtained through a solvothermal method. In this synthesis, an alcohol (benzyl alcohol or hexanol) is used as both a ...

    • Charge ordering and dielectric properties in the near half-doped Pr0.79Na0.21MnO3 perovskite 

      Sánchez-Andújar, Manuel; Yáñez Vilar, Susana; Castro-García, Socorro; Señarís-Rodríguez, M. A. (Elsevier, 2008-06)
      [Abstract] The Pr0.79Na0.21MnO3 perovskite has been prepared in polycrystalline form by a ceramic method. We have carried out its structural characterization by synchrotron X-ray powder diffraction (SXRPD) at room temperature ...

    • IR characterization of Ln2−xSrxCoO4 (x≥1; Ln=La, Nd) oxides 

      Castro-García, Socorro; Sánchez-Andújar, Manuel; Rey Cabezudo, Carlos José; Señarís-Rodríguez, M. A.; Julien, C. (Elsevier, 2001-07)
      [Abstract] We have recorded the FTIR spectra of powder samples of Ln2−xSrxCoO4 (Ln=La, Nd) at room temperature. We have identified the infrared active modes (3A2u+4Eu), and analyzed how they change as a function of Ln and ...