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The continued development of reticulated vitreous carbon as a versatile electrode material: Structure, properties and applications

The continued development of reticulated vitreous carbon as a versatile electrode material: Structure, properties and applications
The continued development of reticulated vitreous carbon as a versatile electrode material: Structure, properties and applications
The limitations of two-dimensional electrodes can be overcome by using three-dimensional materials having sufficient porosity and active area while offering moderate mass transport rates and a relatively low pressure drop at controlled electrolyte flow rate. In concept, a wide variety of metal, ceramic and composite materials are possible but restrictions are imposed by the need to avoid materials degradation, while maintaining adequate electrical conductivity, sufficient robustness and the possibility of facile scale-up. Despite its fragility, one of the traditional electrode materials used as a porous, three-dimensional electrode is carbon foam, particularly in the 97% vol. porous form of reticulated vitreous carbon, RVC. A time-line indicates that the history of this material dates back over 50 years to the mid-1960s, when it was primarily used as an uncoated material in small-scale, laboratory electroanalysis. Surface modification and diverse coatings have considerably extended the use of RVC. Recent applications are found in sensors and monitors, electrosynthesis, environmental processing and energy conversion. This review highlights the fundamental structure and summarises the physicochemical properties of RVC. Fluid flow through various porosity grades of the material, their active electrochemical area and rates of mass transport are quantified. The diverse applications of RVC in energy conversion, environmental treatment and electrosynthesis are illustrated by selected examples from the authors’ laboratories and others over the last 30 years. Recent research on coated RVC, energy conversion environmental remediation and sensors is highlighted. Critical areas deserving further research and development are proposed
0013-4686
566-591
Walsh, F.
309528e7-062e-439b-af40-9309bc91efb2
Arenas, L.F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De Leon Albarran, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Reade, G.W.
0106a383-d8b1-48b6-8fd5-7ee2371853bc
Whyte, I.
e68e9902-5931-415c-a752-475b7917d7a3
Mellor, B.G.
9ce358bb-17c7-4e06-9bb6-ca7a379bd79b
Walsh, F.
309528e7-062e-439b-af40-9309bc91efb2
Arenas, L.F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De Leon Albarran, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Reade, G.W.
0106a383-d8b1-48b6-8fd5-7ee2371853bc
Whyte, I.
e68e9902-5931-415c-a752-475b7917d7a3
Mellor, B.G.
9ce358bb-17c7-4e06-9bb6-ca7a379bd79b

Walsh, F., Arenas, L.F., Ponce De Leon Albarran, C., Reade, G.W., Whyte, I. and Mellor, B.G. (2016) The continued development of reticulated vitreous carbon as a versatile electrode material: Structure, properties and applications. Electrochimica Acta, 215, 566-591. (doi:10.1016/j.electacta.2016.08.103).

Record type: Review

Abstract

The limitations of two-dimensional electrodes can be overcome by using three-dimensional materials having sufficient porosity and active area while offering moderate mass transport rates and a relatively low pressure drop at controlled electrolyte flow rate. In concept, a wide variety of metal, ceramic and composite materials are possible but restrictions are imposed by the need to avoid materials degradation, while maintaining adequate electrical conductivity, sufficient robustness and the possibility of facile scale-up. Despite its fragility, one of the traditional electrode materials used as a porous, three-dimensional electrode is carbon foam, particularly in the 97% vol. porous form of reticulated vitreous carbon, RVC. A time-line indicates that the history of this material dates back over 50 years to the mid-1960s, when it was primarily used as an uncoated material in small-scale, laboratory electroanalysis. Surface modification and diverse coatings have considerably extended the use of RVC. Recent applications are found in sensors and monitors, electrosynthesis, environmental processing and energy conversion. This review highlights the fundamental structure and summarises the physicochemical properties of RVC. Fluid flow through various porosity grades of the material, their active electrochemical area and rates of mass transport are quantified. The diverse applications of RVC in energy conversion, environmental treatment and electrosynthesis are illustrated by selected examples from the authors’ laboratories and others over the last 30 years. Recent research on coated RVC, energy conversion environmental remediation and sensors is highlighted. Critical areas deserving further research and development are proposed

Text
Revised RVC Review 30 Aug 2016 for eprints.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 21 August 2016
Published date: 22 August 2016
Additional Information: Funded by EPSRC: EPSRC Centre for Doctoral Training in Energy Storage and its Applications (EP/L016818/1)
Organisations: Energy Technology Group

Identifiers

Local EPrints ID: 399657
URI: http://eprints.soton.ac.uk/id/eprint/399657
ISSN: 0013-4686
PURE UUID: a7ce5337-2b84-4f3b-8551-5a81caa732c4
ORCID for C. Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

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Date deposited: 05 Sep 2016 10:48
Last modified: 15 Mar 2024 05:50

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Contributors

Author: F. Walsh
Author: L.F. Arenas
Author: G.W. Reade
Author: I. Whyte
Author: B.G. Mellor

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