Listar por autor "Castro, Élida Beatriz"
Mostrando ítems 1-11 de 11
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Contribución de diferentes aditivos en el comportamiento electroquímico de electrodos de hidróxido de níquel
Ortiz, Mariela; Real, Silvia; Castro, Élida Beatriz (Mattear, 2014-05-13)El hidróxido de níquel es utilizado como material activo en electrodos positivos de las baterías alcalinas recargables de níquel. La capacidad de estas baterías depende de la capacidad específica del electrodo positivo y ... -
Desarrollo y caracterización de materiales de electrodo para dispositivos electroquímicos basados en nuevos criterios de ingeniería de diseño, aplicaciones en sistemas de baterías del tipo Níquel Hidruro metálico
Ortiz, Mariela (2013-03-21)Este trabajo de Tesis Doctoral se enmarca en las líneas de investigación que desarrolla actualmente el grupo de investigación CAE (Conversión y Almacenamiento de Energía) del INIFTA (Instituto de Investigaciones Fisicoquímicas ... -
Effect of cobalt electroless deposition on nickel hydroxide electrodes
Ortiz, Mariela; Castro, Élida Beatriz; Real, Silvia (Elsevier, 2014-02-21)The effects of cobalt additive on the positive electrode surface of nickel alkaline batteries are investigated. Electrode surface modifications by electroless cobalt deposits were made at different immersion times. The ... -
Effect of different additives on the electrochemical behaviour of nickel hydroxide electrodes employed in batteries
Real, Silvia; Ortiz, Mariela; Castro, Élida Beatriz (Annual Meeting of the International Society of Electrochemistry, 2014-08-31)Nickel hydroxide is widely used as the active material in positive electrodes in most nickel-based rechargeable alkaline batteries. The theoretical capacity of nickel hydroxide is 289 mAhg-1. The capacity of these batteries ... -
Electrochemical characterization of MWCNT Ni(OH)2 composites as cathode materials
Ortiz, Mariela; Real, Silvia; Castro, Élida Beatriz (Springer, 2015-09-04)The hydrothermal method was used to synthesize multi-walled carbon nanotube/nickel hydroxide composites (MWCNT/Ni(OH)2). The structure and morphology of the prepared materials were characterized by X-ray diffraction and ... -
Electrochemical characterization of Nickel Hydroxide electrodes with MWCNT
Ortiz, Mariela; Real, Silvia; Castro, Élida Beatriz (Anual Meeting of ISE, 2013-09-08)Alkaline secondary batteries are widely required in the current market of electronic devices. Particularly, nickel hydroxide active material is the positive electrode in Ni/H2 and Ni/MH batteries. Due to their semiconductor ... -
Electrochemical characterization of nickel hydroxide nanomaterials as electrodes for NiMH batteries
Real, Silvia; Ortiz, Mariela; Castro, Élida Beatriz (Springer, 2016-08-23)β-Nickel hydroxide was successfully synthesized by a hydrothermal method. Nano-nickel hydroxide material was characterized by X-ray diffraction, infrared absorption spectroscopy, and transmission electron microscopy. They ... -
Electrochemical performance comparison of MWCNTs Ni (OH)2 composite materials by two preparation routes
Ortiz, Mariela; Castro, Élida Beatriz; Real, Silvia (Springer, 2017)Carbon materials are used to improve the nickel hydroxide electrode capacity in rechargeable alkaline batteries. Herein, we present the preparation of multiwall carbon nanotubes/nickel hydroxide composites (MWCNTs/Ni ... -
Estudio del agregado de cobalto vía “electroless” a electrodos de hidróxido de níquel
Ortiz, Mariela; Castro, Élida Beatriz; Real, Silvia (2013-04-09)El hidróxido de níquel es utilizado como material de cátodos en baterías alcalinas del tipo Ni/Cd, Ni/Fe, Ni/Zn, Ni/H, Ni/MH. Para mejorar las propiedades de este material y así su desempeño, en los dispositivos mencionados, ... -
Preparación y caracterización del electrodo positivo de baterías de Ni-HM con aditivos de cobalto
Ortiz, Mariela; Castro, Élida Beatriz; Real, Silvia (HYFUSEN, 2013-06-09)La tendencia mundial de optar por tecnologías denominadas “limpias” conlleva a que se invierta en el desarrollo de tecnologías de fuentes energéticas alternativas. Dentro de estos dispositivos se incluye a las baterías ... -
Preparation and characterization of positive electrode of NiMH batteries with cobalt additives
Ortiz, Mariela; Real, Silvia; Castro, Élida Beatriz (Elsevier, 2014-02-18)The present paper shows the preparation and characterization of alkaline batteries cathodes formed by nickel hydroxide with the addition of cobalt. This additive was incorporated by two methods: on the electrode surface, ...