Zinc surface morphological variations and ionic mass transfer rates in alkaline solution

I. Arise, T. Homma, F. R. McLarnon, Y. Fukunaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A horizontal upward-facing Zn anode was electrochemically dissolved in aqueous alkaline electrolyte. A plane-parallel upward-facing Ni(OH) 2/NiOOH cathode was combined with this Zn anode in a single cell, divided by a polymer separator. This configuration can be considered as a model single pore inside the mesoporous space of a Zn-NiOOH battery cell. It also insures that ionic mass transfer by diffusion and migration is dominant over that by natural convection. The morphological variations of the Zn anode surface plane were examined during the discharge operation of the Zn-NiOOH model cell. The two-dimensional transient concentration profiles of each ion accompanying the electrochemical dissolution of Zn anode in the alkaline electrolyte were numerically calculated. The surface morphological variations of the Zn anode were discussed with the aid of numerical simulation. ZnO precipitation on the Zn anode surface was confirmed to be dependent on the horizontal distance from the cell separator. The numerical model provides insight to the analysis of observed morphological variations along the anode surface.

Original languageEnglish
Title of host publicationElectrodeposition for Energy Applications 2
Pages3-9
Number of pages7
Edition21
DOIs
Publication statusPublished - 2011 Dec 1
EventElectrodeposition for Energy Applications 2 - 219th ECS Meeting - Montreal, QC, Canada
Duration: 2011 May 12011 May 6

Publication series

NameECS Transactions
Number21
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceElectrodeposition for Energy Applications 2 - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period11/5/111/5/6

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Arise, I., Homma, T., McLarnon, F. R., & Fukunaka, Y. (2011). Zinc surface morphological variations and ionic mass transfer rates in alkaline solution. In Electrodeposition for Energy Applications 2 (21 ed., pp. 3-9). (ECS Transactions; Vol. 35, No. 21). https://doi.org/10.1149/1.3641459