Proceedings of nanoGe Fall Meeting 2018 (NFM18)
DOI: https://doi.org/10.29363/nanoge.nfm.2018.221
Publication date: 6th July 2018
Dimensionally stable electrodes that are able to sustain the harsh chemical environment involved during electrochemical reactions is a requirement for materials to reach industrial applications. Dimensionally stable anodes (DSA) have been obtained previously for the electrochemical generation of chlorine gas and for water splitting applications.1 So far the most successful approach has been the generation of a thin layer of a stable electrocatalytic and conductive coating deposited on a base metal, usually Ti. Unfortunately, this approach renders materials with a small contact surface area between catalyst and electrolyte which could limit the overall activity of the reaction. The current presentation will focus on how DSA can be prepared from powder metallurgy processes. The composition can be controlled to modify the porosity of the electrode. This type of electrodes can be used in combination with photovoltaic materials by using different photoelectrochemical configurations for generation of solar fuels.2-4
References
1. Mousty, C.; Fóti, G.; Comninellis, C.; Reid, V., Electrochemical behaviour of DSA type electrodes prepared by induction heating. Electrochim. Acta 1999, 45, 451-456.
2. Guerrero, A.; Bisquert, J., Perovskite semiconductors for photoelectrochemical water splitting applications. Current Opinion in Electrochemistry 2017, 2, 144-147.
3. Guerrero, A.; Haro, M.; Bellani, S.; Antognazza, M. R.; Meda, L.; Gimenez, S.; Bisquert, J., Organic photoelectrochemical cells with quantitative photocarrier conversion. Energy Environ. Sci. 2014, 7, 3666-3673.
4. Haro, M.; Solis, C.; Blas‐Ferrando Vicente, M.; Margeat, O.; Dhkil Sadok, B.; Videlot‐Ackermann, C.; Ackermann, J.; Di Fonzo, F.; Guerrero, A.; Gimenez, S., Direct Hydrogen Evolution from Saline Water Reduction at Neutral pH using Organic Photocathodes. ChemSusChem 2016, 9, 3062-3066.
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