Growth of Copper Nanowires by Using Thermal Oxidation for Solid Oxide Fuel Cell

Abstract:

Tuning high density nanostructures by simple and economic method may contribute towards the development of solid oxide fuel cells. Copper oxide nanowires grown on Cu foil by thermal oxidation at relative low operating temperature from 400°C are characterized by using x-ray diffraction (XRD), energy dispersive x-ray spectroscopy (EDX), atomic force morphology (AFM), conductive-AFM (C-AFM), and field emission scanning electron microscopy (FESEM). The role of oxidizing temperature and time on structural and electrical properties are studied. The formation of nanowires is confirmed by X-Ray diffraction pattern with the presence of copper oxide. The electrical conductivity of the nanowires was ranging from 0.2x10⁵ S m^-1 to 0.8x10⁵ S m^-1are determined from conductive atomic force microscopy. The oxidation time strongly influence the morphology and chemical composition of the nanowires. Field emission scanning electron microscopy reveals the growth mechanism of copper nanowires formation is based on vapour-solid (VS) mechanism. Herein, the successfully growth of CuO nanowire are directly from Cu foil to overcome the mismatching stress between the substrate and the oxide layer. Optimum parameters are studied to make better electrolyte performance in the applications of solid oxide fuel cell (SOFC).

• Periodical: Solid State Phenomena (Volume 268)
• Pages: 234-238
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.268.234
• Online since: October 2017
• Authors: N.A.A. Rahman*, Rosnita Muhammad, Zuhairi Ibrahim, Yussof Wahab
• Keywords: Copper Oxide, Growth Mechanism, Nanowires, Solid Oxide Fuel Cell, Thermal Oxidation

References

[1] J. T. Chen et al, CuO Nanowires Synthesized by Thermal Oxidation Route, vol. 454, p.268–273. (2008).

[2] W. Zhang et al, Copper Doping in Titanium Oxide Ctalyst Film Prepared by DC Reactive Magnetron Sputtering, J. Catal. Today., vol. 93, pp.589-594. (2004).

DOI: 10.1016/j.cattod.2004.06.009

[3] D. Zappa et al, Copper Oxide Nanowires Prepared by Thermal Oxidation for Chemical Sensing, J. Mater. Sci., vol. 25, pp.175-180. (2011).

[4] F. Xu et al, Electrochemical behaviour of cuprous oxide-reduced graphene oxide nanocomposites and their application in nonenzymatic hydrogen peroxide sensing, J. Electrochim. Acta., vol. 88, pp.59-65. (2013).

DOI: 10.1016/j.electacta.2012.10.070

[5] Z. R. Dai et al, Novel nanostructures of functional oxides synthesized by thermal evaporation, Adv. Funct. Mater., vol. 13, pp.9-24. (2003).

DOI: 10.1002/adfm.200390013

[6] M. Kaur et al, Growth and Branching of CuO Nanowires by Thermal Oxidation of Copper, J. Cryst. Growth, vol. 289, pp.670-675. (2006).

DOI: 10.1016/j.jcrysgro.2005.11.111

[7] Y.I. Lee et al, Tunable Synthesis of Cuprous and Cupric oxide nanotubes from Electrodeposited Copper Nanowires, J. Nanosci. Nanotechnol., vol. 11, pp.1455-1458. (2011).

DOI: 10.1166/jnn.2011.3343

[8] C. Xu et al, Fabrication of a Graphene-Cuprous Oxide Composite, J. Solid State Chem., vol. 182, pp.2486-2490. (2009).

DOI: 10.1016/j.jssc.2009.07.001

[9] H. Cao, L. Wang, and L. Zhang, Synthesis and I – V Properties of Aligned Copper Nanowires, Nanotechnology, vol. 17, no. 6, p.1736–1739. (2006).