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Design of a miniature flow cell for in situ x-ray imaging of redox flow batteries

Jervis, R; Brown, LD; Neville, TP; Millichamp, J; Finegan, DP; Heenan, TMM; Brett, DJL; (2016) Design of a miniature flow cell for in situ x-ray imaging of redox flow batteries. Journal of Physics D: Applied Physics , 49 (43) , Article 434002. 10.1088/0022-3727/49/43/434002. Green open access

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Abstract

Flow batteries represent a possible grid-scale energy storage solution, having many advantages such as scalability, separation of power and energy capabilities, and simple operation. However, they can suffer from degradation during operation and the characteristics of the felt electrodes are little understood in terms of wetting, compression and pressure drops. Presented here is the design of a miniature flow cell that allows the use of x-ray computed tomography (CT) to study carbon felt materials in situ and operando, in both lab-based and synchrotron CT. Through application of the bespoke cell it is possible to observe felt fibres, electrolyte and pore phases and therefore enables non-destructive characterisation of an array of microstructural parameters during the operation of flow batteries. Furthermore, we expect this design can be readily adapted to the study of other electrochemical systems.

Type: Article
Title: Design of a miniature flow cell for in situ x-ray imaging of redox flow batteries
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0022-3727/49/43/434002
Publisher version: http://dx.doi.org/10.1088/0022-3727/49/43/434002
Language: English
Additional information: Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Keywords: X-ray imaging, computed tomography, redox flow battery, energy storage, in situ cell, Research-and-development, Energy-storage, Carbon Felt, Synchrotron-radiation, Computed-tomography, Negative Electrode, Fuel-cells, Resolution, Progress, Microstructures
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1545052
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