Electrochemical saturation of antimony-lead melts with oxygen: Cell design and measurement
authors Mikhalev, SM; Juliao, PSB; Loureiro, FJA; Kovalevsky, AV; Shaula, AL; Frade, JR; Fagg, DP
nationality International
journal ELECTROCHIMICA ACTA
author keywords Antimony; Lead; Melt; Impedance spectroscopy; Polarization resistance
keywords FUEL-CELLS; MOLTEN SB; ANODE; PERFORMANCE; STABILITY; SN; BI
abstract Liquid metals have emerged as potential materials for fuel cell and battery applications due to their suit-able redox potentials, fast redox kinetics, and/or active participation in electrode reactions. In this work, we study the electrochemical oxidation behavior of antimony-lead melts by the use of a robust, yttrium-stabilized zirconia based, test setup that can avoid the necessity for the use of precious metals as current collectors. Impedance spectroscopy results obtained at 700 degrees C as a function of applied anodic polarization reveal the presence of two main contributions: an interfacial resistance, occurring at high-frequencies, re-lated to the transference of oxygen-ions between the electrolyte and the anode melt and a low-frequency contribution, related to the diffusion of oxidized species within the bulk of the melt. These electrode mechanisms were followed as a function of the extent of melt oxidation, with suggested links made to the degree of melt segregation supported by SEM and XRD analyses. (c) 2021 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0013-4686
isbn 1873-3859
year published 2021
volume 395
digital object identifier (doi) 10.1016/j.electacta.2021.139206
web of science category 8
subject category Electrochemistry
unique article identifier WOS:000697727000002
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 6.215
5 year journal impact factor 5.478
category normalized journal impact factor percentile 83.333
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg