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Semiconductor water-based inks: Miniaturized NiO pseudocapacitor electrodes by inkjet printing

AuthorsYus, Joaquín; González Granados, Zoilo ; Sánchez Herencia, Antonio Javier; Sangiorgi, A.; Sangiorgi, N.; Gardini, D.; Sanson, A.; Galassi, C.; Caballero Cuesta, Amador ; Morales, Julián; Ferrari-Fernández, Begoña
KeywordsPath design
Inkjet printing
Water-based inks
Miniaturized pseudocapacitor electrodes
Ceramic semiconductor
Issue Date2019
CitationJournal of the European Ceramic Society 39: 2908- 2914 (2019)
AbstractThe formulation, development and optimization of water-based inks of platelet-like nanoparticles are the mainobjective of this work. As-synthesized Ni(OH)2nanoparticles were dispersed and stabilized in aqueous sus-pension by PEI addition. The combination of DEG (cosolvent) with H2O shows the ideal values of surface tensionand viscosity for piezoelectric inkjet printing, which exhibits a homogeneous jettingflow of the nanoplateletssuspension. The printed nanostructure was sintered at low temperature (325 °C) and the electrochemicaloverview of NiO electrode behavior was described. These printable pseudocapacitors tested by a three-electrodecell have showed a competitive specific capacitance, leading 92% and 78% of capacitance retention for 2000cycles at scan rates of 1 and 2 A/g respectively, and a coulombic efficiency of 100%. The initial performance ofthis printed NiO pseudocapacitor can be compared with others prepared by conventional methods. This newfinding is expected to be particularly useful for the designing of micro-pseudocapacitors.
Publisher version (URL)https://doi.org/10.1016/j.jeurceramsoc.2019.03.020
Identifiersdoi: 10.1016/j.jeurceramsoc.2019.03.020
e-issn: 1873-619X
issn: 0955-2219
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