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    Electrochemical performance comparison of MWCNTs Ni (OH)2 composite materials by two preparation routes

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    Electrochemical performance comparison of MWCNTs Ni (OH)2 composite materials by two preparation routes.pdf (5.243Mb)
    Date
    2017
    Author
    Ortiz, Mariela
    Castro, Élida Beatriz
    Real, Silvia
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    Abstract
    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 (OH)2) by two different routes. The first method consists of the direct incorporation of MWCNTs in the active material, and the second is based on the hydrothermal synthesis of β-nickel hydroxide, where MWCNTs are added to the precursor solutions. The electrochemical properties of the prepared positive electrodes containing MWCNTs/Ni (OH)2 composites are studied. Electrochemical results indicate that the active material with MWCNTs incorporated before the hydrothermal synthesis is capable of delivering a higher discharge capacity and exhibits a better reversibility than those composites prepared with MWCNTs after the hydrothermal route.
    URI
    http://hdl.handle.net/20.500.12272/2922
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    Repositorio Institucional Abierto UTN basado en

    DSpace software copyright © 2002-2015  Duraspace
    Contact Us | Send Feedback
    @mire NV@mire NV@mire NV