Issue 18, 2016

Bio-inspired synthesis of α-Ni(OH)2 nanobristles on various substrates and their applications

Abstract

It is still a challenging task to develop simple methods for facile synthesis of α-Ni(OH)2 nanostructures on substrates under mild conditions without using expensive instruments. Here, α-Ni(OH)2 nanobristles were synthesized on various substrates under mild conditions via a bio-inspired method using a simple Nafion diaphragm-assisted system. By growing the unique networks of α-Ni(OH)2 nanobristles on a piece of glass, a double-rough surface, with structures at both the nanoscale and microscale, was achieved, showing interesting roughness-induced superhydrophobicity in air (water contact angle 156°) and superoleophobicity in water (oil contact angle 161°). Additionally, α-Ni(OH)2 nanobristles could be formed directly on Ni foam and used as integrated and binder-free electrodes for application in supercapacitors. The unique structure with a large exposed surface enables the electrodes to demonstrate an impressive capacity of 2090 F g−1 at a current of 2 A g−1. The α-Ni(OH)2 supercapacitor exhibits a relatively good long cycling performance, attributed to its network like structure and good stability. The method and ideas outlined in the paper, based on diaphragm-assisted systems, could be employed, in principle, for the synthesis of other functional materials or precursors under mild conditions.

Graphical abstract: Bio-inspired synthesis of α-Ni(OH)2 nanobristles on various substrates and their applications

Supplementary files

Article information

Article type
Paper
Submitted
17 Nov 2015
Accepted
18 Jan 2016
First published
18 Jan 2016

J. Mater. Chem. A, 2016,4, 6919-6925

Bio-inspired synthesis of α-Ni(OH)2 nanobristles on various substrates and their applications

X. Meng and D. Deng, J. Mater. Chem. A, 2016, 4, 6919 DOI: 10.1039/C5TA09329E

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