Structural evolution during calcination and sintering of a (La0.6Sr0.4)0.99CoO3-δ nanofiber prepared by electrospinning

Nanotechnology
S B SimonsenW Zhang

Abstract

Design of three-dimensional metal oxide nanofibers by electrospinning is being widely explored. However, the impacts of calcination and sintering on the resulting morphology remain unknown. For the first time, (La0.6Sr0.4)0.99CoO3-δ (LSC) nanofiber, which is among the most promising electrode materials for solid oxide fuel cells, was synthesized by sol-gel electrospinning. By elevating the temperature in oxygen using in situ transmission electron microscopy, we discovered the structural transitions from nanofibers to nanotubes and then to nano-pearl strings. This facile and up-scalable method can be widely applied to design metal oxide one-dimensional nanomaterials with precise control in both geometry (nanofiber, nanotube and nano-pearl string) and surface area (by varying grain size).

References

Jan 27, 2005·Chemical Reviews·Stuart B Adler
Jun 28, 2006·The Journal of Physical Chemistry. B·C M WangC H F Peden
Oct 12, 2010·ChemSusChem·Jonghyun ChoiPatrick T Mather
Nov 24, 2011·ChemSusChem·Wenjing Zhang, Peter N Pintauro
Aug 14, 2012·Nature Materials·Takeshi FujitaMingwei Chen

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Citations

Mar 1, 2018·Nanotechnology·Iman EvazzadeSergey V Dmitriev
Jan 21, 2020·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Fabrizio GaulandrisLuise T Kuhn

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