Template-free electrodeposition of tellurium nanostructures in a room-temperature ionic liquid

Abstract : We report template-free electrodeposition of tellurium (Te) 1D nanostructures at moderate temperature (<= 100 degrees C), using a piperidinium-based ionic liquid mixture: 1-ethyl-1-octylpiperidinium bis(trifluoromethylsulfonyl)imide: 1-ethyl-1-octylpiperidinium bromide (EOPipTFSI:EOPipBr). Single crystalline nanowires were obtained, with diameter ranging from 30 nm to 200 nm depending on experimental conditions. A preferential growth was observed along the [001] direction. The presence of bromide is necessary for the growth of nanowires. The temperature plays also a major role: the crystallinity of Te nanowires is improved by increasing temperature, whereas more homogeneous size distribution is observed at lower temperature.
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https://hal.univ-lorraine.fr/hal-01494531
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Submitted on : Thursday, March 23, 2017 - 4:06:05 PM
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Jonathan Szymczak, Sophie Legeai, Sebastien Diliberto, Sylvie Migot, Nicolas Stein, et al.. Template-free electrodeposition of tellurium nanostructures in a room-temperature ionic liquid. Electrochemistry Communications, Elsevier, 2012, 24, pp.57-60. ⟨10.1016/j.elecom.2012.08.013⟩. ⟨hal-01494531⟩

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