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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 9647458, 9 pages
Research Article

Inkjet Printing as High-Throughput Technique for the Fabrication of NiCo2O4 Films

1Department of Applied Physics, CINVESTAV-IPN, 97310 Mérida, YUC, Mexico
2CONACYT-Department of Applied Physics, CINVESTAV-IPN, 97310 Mérida, YUC, Mexico

Correspondence should be addressed to Geonel Rodriguez Gattorno and Miguel Angel Ruiz-Gómez

Received 31 March 2017; Revised 25 May 2017; Accepted 31 May 2017; Published 6 July 2017

Academic Editor: Ilia Ivanov

Copyright © 2017 Reyna Dianela Bacelis-Martínez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Owing to its distinctive physicochemical properties, nickel-cobalt mixed oxide (NiCo2O4) has become a promising and innovative material for applications in many technological fields. The design of fast and reliable techniques for the deposition of this material is essential in the development of applications. In this work, NiCo2O4 films were successfully prepared by an inkjet printing technique using a suitable ink obtained from metal nitrates in a glycerol-water mixture. In order to deposit well-defined and uniform film patterns, the instrumental parameters such as drop spacing and inkjet voltage have been explored. The pure crystalline bimetallic nickel cobaltite oxide is obtained at 500°C with a homogeneous compositional distribution along the film. The average thickness observed by scanning electron microscopy is around 490 nm, whereas X-ray photoelectron spectroscopy analysis revealed that the film surface presents mixed oxidation states for both metals: Co2+, Co3+, Ni2+, and Ni3+. The electrocatalytic performance of inkjet-printed NiCo2O4 films for the water oxidation reaction is comparable with earlier reports.