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Mass transfer to a nanostructured nickel electrodeposit of high surface area in a rectangular flow channel

Mass transfer to a nanostructured nickel electrodeposit of high surface area in a rectangular flow channel
Mass transfer to a nanostructured nickel electrodeposit of high surface area in a rectangular flow channel
Nanostructured nickel was electrodeposited on a stainless steel plate. The convective-diffusion mass transfer to this nanostructured electrode was compared to that of a planar, mirror polished solid nickel electrode using the limiting current technique, for the reduction of ferricyanide, hexacyanoferrate (III) ion in an undivided cell. The effect of introducing a turbulence promoter into the electrolyte channel was also evaluated for each electrode under steady state conditions. At a Reynolds number of 700, the product of mass transfer coefficient and active electrode area, kLA for the nanostructured nickel electrode increases over 11 times compared to the mirror polished planar nickel electrode. In the presence of a turbulence promoter, the nanostructured nickel electrode shows an approximately 23 times increase in kLA compared to the planar mirror polished nickel electrode. The dimensionless mass transfer correlations Sh=aRe?Sc?L?? are compared to others in the literature.
0013-4686
507-513
Recio, F. J.
1e0db322-14e5-42f5-b3ce-a7a09248dc0c
Herrasti Gonzalez, P.
4b72d0e4-f391-421a-ae54-a9ba3f5632fc
Vazquez, L.
ffcd2095-8dbb-4d3b-b616-7ebc20afaea9
Ponce de Leon, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F. C.
309528e7-062e-439b-af40-9309bc91efb2
Recio, F. J.
1e0db322-14e5-42f5-b3ce-a7a09248dc0c
Herrasti Gonzalez, P.
4b72d0e4-f391-421a-ae54-a9ba3f5632fc
Vazquez, L.
ffcd2095-8dbb-4d3b-b616-7ebc20afaea9
Ponce de Leon, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F. C.
309528e7-062e-439b-af40-9309bc91efb2

Recio, F. J., Herrasti Gonzalez, P., Vazquez, L., Ponce de Leon, C. and Walsh, F. C. (2013) Mass transfer to a nanostructured nickel electrodeposit of high surface area in a rectangular flow channel. Electrochimica Acta, 90, 507-513. (doi:10.1016/j.electacta.2012.11.135).

Record type: Article

Abstract

Nanostructured nickel was electrodeposited on a stainless steel plate. The convective-diffusion mass transfer to this nanostructured electrode was compared to that of a planar, mirror polished solid nickel electrode using the limiting current technique, for the reduction of ferricyanide, hexacyanoferrate (III) ion in an undivided cell. The effect of introducing a turbulence promoter into the electrolyte channel was also evaluated for each electrode under steady state conditions. At a Reynolds number of 700, the product of mass transfer coefficient and active electrode area, kLA for the nanostructured nickel electrode increases over 11 times compared to the mirror polished planar nickel electrode. In the presence of a turbulence promoter, the nanostructured nickel electrode shows an approximately 23 times increase in kLA compared to the planar mirror polished nickel electrode. The dimensionless mass transfer correlations Sh=aRe?Sc?L?? are compared to others in the literature.

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More information

e-pub ahead of print date: 19 December 2012
Published date: 13 February 2013
Additional Information: active electrode area, ferricyanide ion, mass transfer coefficient, enhancement factor, nanostructured nickel
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 348258
URI: http://eprints.soton.ac.uk/id/eprint/348258
ISSN: 0013-4686
PURE UUID: bb2ce0ea-98e2-4193-aaec-74029ed940ad
ORCID for C. Ponce de Leon: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 11 Feb 2013 11:27
Last modified: 17 Dec 2019 01:46

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