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Anomalous Coating of Iron Microparticles by Ni-Co Layers in the 3D Stirred Heterogeneous System: Impedance Study
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SYSNO ASEP 0335065 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Anomalous Coating of Iron Microparticles by Ni-Co Layers in the 3D Stirred Heterogeneous System: Impedance Study Title Anomální vylučování Ni-Co povlaku na železných mikročásticích v 3D heterogénním systému studované pomocí impedanční spektroskopie Author(s) Gál, Miroslav (UFCH-W)
Orináková, R. (SK)
Wiemhöfer, H.-D. (DE)
Chovan, P. (SK)
Krajniková, A. (SK)
Híveš, J. (SK)Source Title Journal of the Electrochemical Society. - : Electrochemical Society - ISSN 0013-4651
Roč. 156, č. 11 (2009), D462-D468Number of pages 7 s. Language eng - English Country US - United States Keywords fluidized-bed electrodes ; electrochemical impendance ; magnetic properties Subject RIV CG - Electrochemistry R&D Projects GP203/09/P502 GA ČR - Czech Science Foundation (CSF) LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000270457600036 DOI 10.1149/1.3208008 Annotation A high level controlled electrochemical metal plating of the homogeneous, uniform, and adhesive Ni-Co nano-/microlayer on an Fe microparticle powder substrate in the stirred heterogeneous system (SHS) is reported. The influence of the volume fraction of suspended powder particles on the partial current efficiency of the electrolytic coating process is evaluated using electrochemical impedance spectroscopy. The role of both the solid Fe powder microparticles and the electrochemical deposition of binary coating on the particle surface of the charge-transfer mechanism through SHS is discussed. The equivalent circuit on the porous electrode model is proposed and, adopting this approach, some calculations and simulations of the experimental data are done. The optimal volume fraction of solid particles in the charge transfer of our SHS is suggested. The formation of permanent aggregates of powder microparticles during the electrolysis is proved. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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