Open AccessThree‐dimensional hierarchical nickel‐based hydroxides and oxides microspheres and their electrochemical properties
Author(s) -
Liu Hui,
Dong Xiaonan,
Duan Congyue,
Su Xing,
Zhu Zhenfeng
Publication year - 2013
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2013.0335
Subject(s) - thermogravimetric analysis , scanning electron microscope , non blocking i/o , calcination , materials science , nickel , fourier transform infrared spectroscopy , electrochemistry , chemical engineering , hydrothermal circulation , microsphere , layered double hydroxides , nuclear chemistry , chemistry , metallurgy , catalysis , composite material , organic chemistry , hydroxide , electrode , engineering
Nickel hydroxides (Ni(OH) 2 ) with various morphologies, including flower‐like, walnut‐like and particle‐aggregated microspheres, have been successfully synthesised by a surfactant‐assisted microwave hydrothermal method. NiO microspheres have been obtained by calcining corresponding Ni(OH) 2 precursors at 400°C for 2 h. The products were characterised by X‐ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy and transform electron microscopy. The electrochemical properties of the NiO microspheres with different morphologies were also investigated.