Abstract
Routes to nano-phase nickel in the forms of highly porous sponges and dense films have been developed. Nickel acetate and nitrate were mixed with triethanolamine and methanol, and evaporated to a concentrated liquid. Heat-treatment at 10°C/min to 170°C under N2 atmosphere yielded a highly porous sponge consisting of <10 nm sized Ni crystallites. Deposition of a 1 M nickel precursor solution on polycrystalline Al2O3, SnO2 : F coated glass or titanium substrates spinning at 2700 rpm, followed by heat-treatment at 10°C/min to 400°C yielded smooth and dense nickel films consisting of 3–5 nm sized crystallites. The precursor concentrate was studied by FT-IR and the phase development on heat-treatment was studied by thermogravimetric analysis, powder X-ray diffraction, scanning and transmission electron microscopy.
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Ekstrand, Å., Jansson, K. & Westin, G. Solution Synthesis of Nano-Phase Nickel as Film and Porous Electrode. Journal of Sol-Gel Science and Technology 19, 353–356 (2000). https://doi.org/10.1023/A:1008762405755
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DOI: https://doi.org/10.1023/A:1008762405755