Bio-inspired synthesis of α-Ni(OH)2 nanobristles on various substrates and their applications. Issue 18 (28th January 2016)

• Record Type: Journal Article
• Authors: Meng, Xinghua; Deng, Da
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 18(2016)
• Page Start: 6919
• Page End: 6925
• Publication Date: 2016-01-28
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5ta09329e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A facile bio-inspired, diaphragm-assisted method is demonstrated for effective synthesis of nanostructures on substrates. 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.