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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Evaluation of carbon composite materials for the negative electrode in the zinc–cerium redox flow cell

Nikiforidis, Georgios and Berlouis, Leonard and Hall, David and Hodgson, David (2012) Evaluation of carbon composite materials for the negative electrode in the zinc–cerium redox flow cell. Journal of Power Sources, 206. 497–503. ISSN 0378-7753

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An investigation into the suitability of three carbon composites as substrates for the negative electrode in the zinc–cerium redox flow cell has been carried out. The composite electrodes examined comprised the use of polyvinylidene fluoride (PVDF) and high density polyethylene (HDPE) as binders for the carbon and the third was a graphite foil electrode of ∼1 mm thickness. The zinc deposition process was carried out in a methane sulfonic acid (MSA) electrolyte at 60 °C and nucleation studies revealed the growth of the deposits to be instantaneous in this medium. Galvanostatic charge/discharge cycles were performed in order to test the performance of these composite materials under a variety of operating conditions. For all the materials, the highest charge/discharge coulombic efficiencies (∼95%) were found for the highest discharge current densities (200 mA cm−2) employed in the study but this falls as the charge period is increased. The effect of solution flow velocity is however less clear. Prolonged zinc charging–discharging cycling on the composite materials revealed that whereas the PVDF-based electrode exhibited no loss in efficiency with cycling (>250), a drastic reduction was observed for the HDPE-based and graphite foil electrodes beyond 70 cycles and this was accompanied by the physical deterioration in the electrode surface.