<abstract xmlns="http://www.w3.org/1999/xhtml">A simple and effective hydrothermal synthesis of spherical α-Ni(OH)2 particles and α-Ni(OH)2/carbon composites was proposed. The mechanism of ultrafine α-Ni(OH)2 phase forming and correlations between synthesis conditions, morphology, electrical conductivity were analyzed. It was found that carbon nanoparticles form an electric conductive cover on nickel hydroxide microparticles during synthesis which increases overall electronic conductivity of the composite material. α-Ni(OH)2 and α-Ni(OH)2/C samples were tested as electrodes for hybrid supercapacitors. It was found that carbon coverings stabilize α-Ni(OH)2 phase in the alkaline medium. The comparison of the influence of laser irradiation and ultrasonic treatment on the electrochemical performance of the obtained materials was made.</abstract>

A simple and effective hydrothermal synthesis of spherical α-Ni(OH)2 particles and α-Ni(OH)2/carbon composites was proposed. The mechanism of ultrafine α-Ni(OH)2 phase forming and correlations between synthesis conditions, morphology, electrical conductivity were analyzed. It was found that carbon nanoparticles form an electric conductive cover on nickel hydroxide microparticles during synthesis which increases overall electronic conductivity of the composite material. α-Ni(OH)2 and α-Ni(OH)2/C samples were tested as electrodes for hybrid supercapacitors. It was found that carbon coverings stabilize α-Ni(OH)2 phase in the alkaline medium. The comparison of the influence of laser irradiation and ultrasonic treatment on the electrochemical performance of the obtained materials was made.

Synthesis, morphology, electrical conductivity and electrochemical properties of α-Ni(OH)2 and its composites with carbon

Vasyl Stefanyk Precarpathian National University

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Synthesis, morphology, electrical conductivity and electrochemical properties of α-Ni(OH) and its composites with carbon

A simple and effective hydrothermal synthesis of spherical α-Ni(OH)2 particles and α-Ni(OH)2/carbon composites was proposed. The mechanism of ultrafine...

Synthesis, morphology, electrical conductivity and electrochemical properties of α-Ni(OH)₂ and its composites with carbon

Published Online: Dec 30, 2019

Page range: 547 - 553

Received: Nov 22, 2017

Accepted: Apr 23, 2018

DOI: https://doi.org/10.2478/msp-2019-0077

Keywords
nickel hydroxide, electrical conductivity, specific capacitance, diffusion of charge carriers

© 2019 O.M. Khemii et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Synthesis, morphology, electrical conductivity and electrochemical properties of α-Ni(OH)2 and its composites with carbon

Published Online: Dec 30, 2019

Page range: 547 - 553

Received: Nov 22, 2017

Accepted: Apr 23, 2018

DOI: https://doi.org/10.2478/msp-2019-0077

Keywordsnickel hydroxide, electrical conductivity, specific capacitance, diffusion of charge carriers

© 2019 O.M. Khemii et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Synthesis, morphology, electrical conductivity and electrochemical properties of α-Ni(OH)₂ and its composites with carbon

Keywords
nickel hydroxide, electrical conductivity, specific capacitance, diffusion of charge carriers