A 60-second microwave-assisted synthesis of nickel foam and its application to the impregnation of porous scaffolds
MetadataShow full item record
A rapid and facile method to prepare nickel foam from nickel nitrate and glycine using a conventional microwave oven is presented. The foam, characterized by SEM, XRD-Rietveld, TG, magnetization measurements and BET contains mostly nickel metal (80 w%) and nickel oxide (20 w%); it exhibits pores in the sub micrometric and nanometric scale and consists of particles with an average diameter of 45-47 nm and BET surface of 15.9 gm-2. This microwave-assisted combustion synthesis is used to infiltrate porous ceramic scaffolds with nickel metal as a potential method to accelerate the fabrication of electrodes in solid oxide fuel cells and electrolysers. After repeated impregnation, the scaffolds of Ce0.9Gd0.1O2, saffil (high temperature insulating brick), La0.2Sr0.7TiO3 and BaCe0.5Zr0.3Y0.16Zn0.04O3-δ were black, exhibited electrical continuity and were easily lifted with a magnet. A comparative SEM study of the microstructure of the porous scaffolds with and without nickel is presented.
Ruiz-Trejo , E , Azad , A K & Irvine , J T S 2015 , ' A 60-second microwave-assisted synthesis of nickel foam and its application to the impregnation of porous scaffolds ' Journal of The Electrochemical Society , vol 162 , no. 3 . DOI: 10.1149/2.0531503jes
Journal of The Electrochemical Society
© The Author(s) 2014. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited.
DescriptionWe thank Sasol for financial support.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.