1. Ruthenium containing molecular electrocatalyst on glassy carbon for electrochemical water splitting.
- Author
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Li, Lin, Das, Biswanath, Rahaman, Ahibur, Shatskiy, Andrey, Ye, Fei, Cheng, Peihong, Yuan, Chunze, Yang, Zhiqi, Verho, Oscar, Kärkäs, Markus D., Dutta, Joydeep, Weng, Tsu-Chien, and Åkermark, Björn
- Subjects
MULTIWALLED carbon nanotubes ,RUTHENIUM ,HYDROGEN as fuel ,METALLIC oxides ,OXIDATION of water - Abstract
Electrochemical water splitting constitutes one of the most promising strategies for converting water into hydrogen-based fuels, and this technology is predicted to play a key role in the transition towards a carbon-neutral energy economy. To enable the design of cost-effective electrolysis cells based on this technology, new and more efficient anodes with augmented water splitting activity and stability will be required. Herein, we report an active molecular Ru-based catalyst for electrochemically-driven water oxidation (overpotential of ∼395 mV at pH 7 phosphate buffer) and two simple methods for preparing anodes by attaching this catalyst onto glassy carbon through multi-walled carbon nanotubes to improve stability as well as reactivity. The anodes modified with the molecular catalyst were characterized by a broad toolbox of microscopy and spectroscopy techniques, and interestingly no RuO
2 formation was detected during electrocatalysis over 4 h. These results demonstrate that the herein presented strategy can be used to prepare anodes that rival the performance of state-of-the-art metal oxide anodes. [ABSTRACT FROM AUTHOR]- Published
- 2022
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