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Park, Su-Moon
Electrochemistry Lab
Research Interests
  • Electrochemistry and spectroscopy of conducting polymers
  • Environmental Electrochemistry
  • Electrochemical energy conversion devices


Electrochemical behavior of PbO2 nanowires array anodes in a zinc electrowinning solution

DC Field Value Language Yang, Chang jiang ko Park, Su-Moon ko 2014-04-10T02:36:56Z - 2013-09-26 ko 2013-10 -
dc.identifier.citation ELECTROCHIMICA ACTA, v.108, no., pp.86 - 94 ko
dc.identifier.issn 0013-4686 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Free-standing PbO2 nanowires were prepared by an electrodeposition process onto the titanium foil. The morphology of nanowires was investigated by SEM analyses. The contact angle of the nanowires was compared with that of planar film, which indicated higher hydrophilicity and surface energy of nanowires. Cyclic voltammetric and real-time Fourier transform electrochemical impedance spectroscopy (FTEIS) experiments were employed to study the anodic reaction on the surface. The cyclic voltammetric data showed the overpotential of nanowire array electrode decreased by more than 100 mV compared to that of the planar film electrode at an anodic current density of 400 A/m2. A large body of impedance data acquired from the two electrodes as a function of scanned potential by running combined staircase cyclic voltammetry and FTEIS experiments led to systematic comparative analysis on the electrode/electrolyte interface. The changes in solution resistances, film resistances and capacitances, double layer capacitances, and polarization resistances observed during oxygen evolution process were compared and explained by corresponding electrochemical reactions. The nanowires of PbO2 showed a large active surface area led to higher capacitance than that of the planar electrode. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject Nanowires array anode ko
dc.subject Reaction mechanisms ko
dc.subject Real-time impedance measurements ko
dc.subject Zinc electrowinning solution ko
dc.title Electrochemical behavior of PbO2 nanowires array anodes in a zinc electrowinning solution ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84884230683 ko
dc.identifier.wosid 000328014000012 ko
dc.type.rims ART ko
dc.description.wostc 2 *
dc.description.scopustc 2 * 2014-10-18 * 2014-07-12 *
dc.identifier.doi 10.1016/j.electacta.2013.06.068 ko
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