Synthesis of La₂NiO_4+δ Nanofibers by Electrospinning Method and their Application

Abstract:

La₂NiO_4+σ nanofibers exhibiting typical Ruddlesden–Popper structure (K₂NiO₄) were fabricated by a facile electrospinning method. X-ray diffraction, scanning electron microscopy and transmission electron microscopy were used to analyze the structure, morphology and crystal process of the La₂NiO_4+σ nanofibers. For electrical properties measurement, uniaxially aligned nanofibers were directly collected and assembled into electrode. In our research, La₂NiO_4+σ phase forms above 873K with no impurity phase emerges during the thermal treatments. The nanofibers are smooth and uniform throughout the entire length and the grain is growing as calcination temperature increases. Furthmore, the La₂NiO_4+σ nanofibers own high mixed conductivity at 773K, laying good foundation for intermediate temperature solid oxide fuel cells application.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 859-864
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.859
• Online since: August 2018
• Authors: Yan Xing, Meng Fei Zhang, Tian Jun Li, Wei Pan*
• Keywords: Electrospinning, La₂NiO_4+σ, Mixed Conductivity, Solid Oxide Fuel Cell

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