Published September 19, 2016
| Version v1
Journal article
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Studies of performance enhancement of rGO-modified carbon electrodes for Vanadium Redox Flow Systems
Authors/Creators
- 1. Imperial College London
- 2. Delft University of Technology
Description
Reduced graphene oxide (rGO) suspended in an N,N’-dimethylformamide (DMF) solvent underwent electrophoretic deposited (EPD) on carbon paper (CP) electrodes. X-ray computed micro-tomography (XMT) indicates a 24% increase in the specific surface area of CP modified with rGO in comparison to the untreated sample. Furthermore, XMT confirms that the deposition also penetrates into the substrate. Raman analysis shows that the rGO deposited is more amorphous than the CP electrode. A significant reduction in charge transfer resistance of the VO2+/VO2+ reaction is also observed (from impedance measurements) in modified samples in comparison to untreated CP electrodes.
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