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@article{Parra-Puerto:2022:10.1002/celc.202101617,
author = {Parra-Puerto, A and Rubio-Garcia, J and Markiewicz, M and Zheng, Z and Kucernak, A},
doi = {10.1002/celc.202101617},
journal = {ChemElectroChem},
title = {Carbon aerogel based thin electrodes for zero-gap all vanadium redox flow batteries - quantifying the factors leading to optimum performance},
url = {http://dx.doi.org/10.1002/celc.202101617},
volume = {9},
year = {2022}
}

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TY  - JOUR
AB  - Direct growth of resorcinol−formaldehyde carbon aerogels (CAGs) on carbon paper electrodes was achieved using a new approach. Materials with variations in density, mesoporosity and microporosity were prepared. Microstructural properties of the resultant thin electrodes are shown to directly influence performance in zero-gap redox flow battery (RFB). BET analysis shows a total surface area between 643 to 931m2 g−1. Deposition of only ≈15wt.% CAG on the carbon electrode leads to a 320-fold increase in electrochemical surface area. Analysis of the results saw a strong positive correlation of RFB performance with surface area. The best performing electrodes had a good balance between microporous and external surface area, and on the macroscopic scale had sufficiently large pores to allow efficient electrolyte permeation. The poorest performing electrodes which had the highest surface area, also had poor macroscopic porosity leading to large mass transport and solution resistance losses. The best performing electrodes were tested in a zero-gap setup using polarization curves, showing a 25 % increase in power density at 100mA cm−2 and a peak power density of 706mW cm−2 at 1V using thin electrodes
AU  - Parra-Puerto,A
AU  - Rubio-Garcia,J
AU  - Markiewicz,M
AU  - Zheng,Z
AU  - Kucernak,A
DO  - 10.1002/celc.202101617
PY  - 2022///
SN  - 2196-0216
TI  - Carbon aerogel based thin electrodes for zero-gap all vanadium redox flow batteries - quantifying the factors leading to optimum performance
T2  - ChemElectroChem
UR  - http://dx.doi.org/10.1002/celc.202101617
UR  - https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/celc.202101617
UR  - http://hdl.handle.net/10044/1/95295
VL  - 9
ER  -

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