English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/191315
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Electrochemical performance of pseudo-capacitor electrodes fabricated by Electrophoretic Deposition inducing Ni(OH)2 nanoplatelets agglomeration by Layer-by-Layer

AuthorsGonzález Granados, Zoilo ; Yus, Joaquín; Caballero Cuesta, Amador ; J. Morales; Sánchez Herencia, Antonio Javier; Ferrari-Fernández, Begoña
KeywordsColloidal Processing
Layer by Layer
Electrophoretic Deposition
Ni-based materials and Pseudocapacitors
Nanoplatetets
Issue Date2017
PublisherPergamon Press
CitationElectrochimica Acta 247: 333- 343 (2017)
AbstractThe electrochemical behaviour of ceramic semiconductors not only depends on the characteristics of the electroactive material but also on the processing method, the nanoparticles arrangement and the consolidation degree of the formed microstructure. In this sense, the use of nanoparticles with plane morphologies (disc, platelets, etc.) results interesting due to the formation of conduction pathways produced as a consequence of their laminar structures. Electrophoretic Deposition (EPD) is a shaping methodology which allows achieving high degrees in nanoplatelets packing by controlling their alignment during the coating process specifically over 3D substrates. In this work, we have studied the effect of a moderate nanoplatelets agglomeration, by tuning their surfaces with a polyelectrolyte multilayer following a Layer-by-Layer (LbL) methodology and fixing the electric conditions of the EPD process. Overcoming the destructive effects of the full agglomeration of nanoplatelets, NiO films with a stable and extremely open macroporous structure were processed to coat Ni foams, improving the capacitive performance of pseudocapacitors leading to values of specific capacitances of 650 F/g. Results collected in this work also evidence that an efficient ordering and orientation of nanoplatelets in EPD mainly depends on tuning the suspension parameters (solid contents, conductivity, electrophoretic mobility, etc.) to avoid the massive flux and interactions among interparticles and electro-hydrodynamic forces, as well as the interference of collateral electrode phenomena.
Publisher version (URL)http://dx.doi.org/10.1016/j.electacta.2017.07.043
URIhttp://hdl.handle.net/10261/191315
Identifiersdoi: 10.1016/j.electacta.2017.07.043
issn: 0013-4686
Appears in Collections:(ICV) Artículos
Files in This Item:
File Description SizeFormat 
Gonzalez_Electrochemical_Electrocjimica_2017_686719.pdf1,48 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.