The University of Southampton
University of Southampton Institutional Repository

Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow

Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow
Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow
The mass transport characteristics of a porous, rotating cylinder electrode (RCE, 1.0 cm diameter; 0.5, 0.9 or 1.2 cm long; 1.25, 2.25, 3.00 cm3 overall volume; 250–2000 rpm speed) fabricated from reticulated vitreous carbon (RVC, 60 ppi or 100 ppi) were investigated. The deposition of copper from an acid sulfate electrolyte (typically, deoxygenated 1mM CuSO4 in pH 2, 0.5M Na2SO4 at 298 K) was used as a test reaction. The effect of a jet flow of electrolyte towards the electrode and the introduction of polypropylene baffles in the electrochemical cell were studied at controlled rotation rates of the RCE. The product of mass transport coefficient and volumetric electrode area (kmAe) is related to the rotation speed of the electrode. For the 60 ppi RVC RCE, the jet electrolyte flow (3.5 cm3 s?1) enhanced the mass transport rates by a factor of 1.46 at low rotation speeds; this factor was reduced to 1.08 at high rotation speeds. For a 100 ppi electrode, the enhanced mass transport decreased from 1.26 to 1.03 at low and high rotation rates, respectively. Under the experimental conditions, baffles showed little effect on the mass transport rates to the RVC RCE. Mass transport to jet flow at an RVC RCE is compared to other RCEs using dimensionless group correlation.
baffles, copper deposition, jet flow, mass transport, porous electrodes, reticulated vitreous carbon, rotating cylinder electrode
0013-4686
2728-2736
Reade, G.W.
0106a383-d8b1-48b6-8fd5-7ee2371853bc
Ponce de Leon Albarran, C.A.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Rolls Royce plc, P.O. Box 31, Derby DE24 8BJ, UK.
Reade, G.W.
0106a383-d8b1-48b6-8fd5-7ee2371853bc
Ponce de Leon Albarran, C.A.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2

Reade, G.W., Ponce de Leon Albarran, C.A. and Walsh, F.C. , Rolls Royce plc, P.O. Box 31, Derby DE24 8BJ, UK. (2006) Enhanced mass transport to a reticulated vitreous carbon rotating cylinder electrode using jet flow. Electrochimica Acta, 51 (13), 2728-2736. (doi:10.1016/j.electacta.2005.08.009).

Record type: Article

Abstract

The mass transport characteristics of a porous, rotating cylinder electrode (RCE, 1.0 cm diameter; 0.5, 0.9 or 1.2 cm long; 1.25, 2.25, 3.00 cm3 overall volume; 250–2000 rpm speed) fabricated from reticulated vitreous carbon (RVC, 60 ppi or 100 ppi) were investigated. The deposition of copper from an acid sulfate electrolyte (typically, deoxygenated 1mM CuSO4 in pH 2, 0.5M Na2SO4 at 298 K) was used as a test reaction. The effect of a jet flow of electrolyte towards the electrode and the introduction of polypropylene baffles in the electrochemical cell were studied at controlled rotation rates of the RCE. The product of mass transport coefficient and volumetric electrode area (kmAe) is related to the rotation speed of the electrode. For the 60 ppi RVC RCE, the jet electrolyte flow (3.5 cm3 s?1) enhanced the mass transport rates by a factor of 1.46 at low rotation speeds; this factor was reduced to 1.08 at high rotation speeds. For a 100 ppi electrode, the enhanced mass transport decreased from 1.26 to 1.03 at low and high rotation rates, respectively. Under the experimental conditions, baffles showed little effect on the mass transport rates to the RVC RCE. Mass transport to jet flow at an RVC RCE is compared to other RCEs using dimensionless group correlation.

This record has no associated files available for download.

More information

Submitted date: 24 May 2005
Published date: 5 March 2006
Keywords: baffles, copper deposition, jet flow, mass transport, porous electrodes, reticulated vitreous carbon, rotating cylinder electrode
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 27840
URI: http://eprints.soton.ac.uk/id/eprint/27840
ISSN: 0013-4686
PURE UUID: d99227ae-bfdd-47fb-a1fe-8780a541775d
ORCID for C.A. Ponce de Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 27 Jun 2006
Last modified: 16 Mar 2024 03:43

Export record

Altmetrics

Contributors

Author: G.W. Reade
Author: F.C. Walsh
Corporate Author: Rolls Royce plc, P.O. Box 31, Derby DE24 8BJ, UK.

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×